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General Information
Symbol
Dmel\ndl
Species
D. melanogaster
Name
nudel
Annotation Symbol
CG10129
Feature Type
FlyBase ID
FBgn0002926
Gene Model Status
Stock Availability
Gene Snapshot
nudel (ndl) encodes a multi-functional protein with serine protease activity. It is required for both eggshell biogenesis and embryonic dorsoventral patterning. [Date last reviewed: 2019-03-14]
Also Known As
SP89
Key Links
Genomic Location
Cytogenetic map
Sequence location
3L:6,593,938..6,603,366 [-]
Recombination map
3-17
Sequence
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
GO Summary Ribbons
Protein Family (UniProt)
Belongs to the peptidase S1 family. (P98159)
Molecular Function (GO)
[Detailed GO annotations]
Experimental Evidence
Predictions / Assertions
Summaries
Gene Group (FlyBase)
DORSAL GROUP -
The Dorsal group genes encode components of the Toll pathway and were initially identified by maternal effect mutations resulting in the dorsalization of the embryo. (Adapted from FBrf0091014 and FBrf0223077).
S1A SERINE PROTEASES - TRYPSIN-LIKE -
Trypsin-like serine proteases of the S1A family are endopeptidases that cleave amide substrates following Arginine or Lysine at the P1 position. (Adapted from FBrf0239469).
Pathway (FlyBase)
Extracellular Spatzle Activating Pathway Core Components -
In Drosophila, activation of the Toll pathway is controlled by the generation of a cleaved, active, Toll-binding form of spatzle ligand. Proteolytic activation of spatzle ligand lies downstream of several zymogen activation cascades that are initiated by different cues. In dorsal-ventral patterning, localized activation of spz results in ventral nuclear accumulation of dl. During viral and fungal and gram positive bacterial immune challenge, zymogen cascades are activated by extracellular pattern recognition receptors or virulence factor-mediated cleavage of the zymogen persephone (psh). (Adapted from FBrf0091014 and FBrf0223077).
Protein Function (UniProtKB)
Component of the extracellular signaling pathway that establishes the dorsal-ventral pathway of the embryo. Three proteases; ndl, gd and snk process easter to create active easter. Active easter defines cell identities along the dorsal-ventral continuum by activating the spz ligand for the Tl receptor in the ventral region of the embryo. Nudel, pipe and windbeutel together trigger the protease cascade within the extraembryonic perivitelline compartment which induces dorsoventral polarity of the Drosophila embryo.
(UniProt, P98159)
Phenotypic Description (Red Book; Lindsley and Zimm 1992)
ndl: nudel
Maternal effect mutation producing totally dorsalized embryos. Spacing of transverse stripes of ftz protein altered in mutant embryos (Carroll, Winslow, Twombly, and Scott, 1987, Development 99: 327-32).
Summary (Interactive Fly)
serine protease - docking protein - dorsal group - part of a signaling cascade that determines dorsal/ventral polarity of the embryo - required for eggshell biogenesis
Gene Model and Products
Number of Transcripts
1
Number of Unique Polypeptides
1

Please see the GBrowse view of Dmel\ndl or the JBrowse view of Dmel\ndl for information on other features

To submit a correction to a gene model please use the Contact FlyBase form

Protein Domains (via Pfam)
Isoform displayed:
Pfam protein domains
InterPro name
classification
start
end
Protein Domains (via SMART)
Isoform displayed:
SMART protein domains
InterPro name
classification
start
end
Comments on Gene Model
Gene model reviewed during 5.46
Sequence Ontology: Class of Gene
Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0076984
8230
2616
Additional Transcript Data and Comments
Reported size (kB)
8.4 (northern blot)
Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
RefSeq ID
GenBank
FBpp0076693
292.5
2616
5.77
Polypeptides with Identical Sequences

There is only one protein coding transcript and one polypeptide associated with this gene

Additional Polypeptide Data and Comments
Reported size (kDa)
2616 (aa); 292 (kD predicted)
Comments
External Data
Post Translational Modification
Requires cleavage for activation (presumably).
(UniProt, P98159)
Linkouts
Sequences Consistent with the Gene Model
Mapped Features

Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\ndl using the Feature Mapper tool.

External Data
Crossreferences
Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
Linkouts
Gene Ontology (12 terms)
Molecular Function (1 term)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
Biological Process (9 terms)
Terms Based on Experimental Evidence (7 terms)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
inferred from sequence model
Cellular Component (2 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
inferred from direct assay
inferred from direct assay
Terms Based on Predictions or Assertions (0 terms)
Expression Data
Expression Summary Ribbons
Colored tiles in ribbon indicate that expression data has been curated by FlyBase for that anatomical location. Colorless tiles indicate that there is no curated data for that location.
For complete stage-specific expression data, view the modENCODE Development RNA-Seq section under High-Throughput Expression below.
Transcript Expression
in situ
Stage
Tissue/Position (including subcellular localization)
Reference
northern blot
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
ndl transcripts are expressed almost exclusively in follicle cells. They are first detected at stage S7 of oogenesis but reach a peak at stages S9 and S10. In the majority of egg chambers, the transcript is asymmetrically distributed with a higher level seen in ventral than in dorsal follicle cells. The transcript decreases in abundance dramatically in late stage S10 and is undetectable by stage S11.
Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
Additional Descriptive Data
Proteolytically processed segments of ndl protein are secreted into the perivitelline space and stably localized.
Marker for
 
Subcellular Localization
CV Term
Evidence
References
inferred from direct assay
inferred from direct assay
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

GBrowse - Visual display of RNA-Seq signals

View Dmel\ndl in GBrowse 2
RNA-Seq by Region - Search RNA-Seq expression levels by exon or genomic region
Reference
See Gelbart and Emmert, 2013 for analysis details and data files for all genes.
Developmental Proteome: Life Cycle
Developmental Proteome: Embryogenesis
External Data and Images
Linkouts
FLIGHT - Cell culture data for RNAi and other high-throughput technologies
FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
Flygut - An atlas of the Drosophila adult midgut
Images
Alleles, Insertions, and Transgenic Constructs
Classical and Insertion Alleles ( 23 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 9 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of ndl
Transgenic constructs containing regulatory region of ndl
Deletions and Duplications ( 3 )
Phenotypes
Orthologs
Human Orthologs (via DIOPT v7.1)
Homo sapiens (Human) (0)
No records found.
Model Organism Orthologs (via DIOPT v7.1)
Mus musculus (laboratory mouse) (0)
No records found.
Rattus norvegicus (Norway rat) (0)
No records found.
Xenopus tropicalis (Western clawed frog) (0)
No records found.
Danio rerio (Zebrafish) (0)
No records found.
Caenorhabditis elegans (Nematode, roundworm) (0)
No records found.
Arabidopsis thaliana (thale-cress) (0)
No records found.
Saccharomyces cerevisiae (Brewer's yeast) (0)
No records found.
Schizosaccharomyces pombe (Fission yeast) (0)
No records found.
Orthologs in Drosophila Species (via OrthoDB v9.1) ( EOG0919005B )
Organism
Common Name
Gene
AAA Syntenic Ortholog
Multiple Dmel Genes in this Orthologous Group
Drosophila melanogaster
fruit fly
Drosophila suzukii
Spotted wing Drosophila
Drosophila simulans
Drosophila sechellia
Drosophila erecta
Drosophila yakuba
Drosophila ananassae
Drosophila pseudoobscura pseudoobscura
Drosophila willistoni
Drosophila virilis
Drosophila mojavensis
Drosophila grimshawi
Orthologs in non-Drosophila Dipterans (via OrthoDB v9.1) ( EOG0915003C )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Musca domestica
House fly
Glossina morsitans
Tsetse fly
Lucilia cuprina
Australian sheep blowfly
Mayetiola destructor
Hessian fly
Mayetiola destructor
Hessian fly
Aedes aegypti
Yellow fever mosquito
Anopheles darlingi
American malaria mosquito
Anopheles gambiae
Malaria mosquito
Culex quinquefasciatus
Southern house mosquito
Orthologs in non-Dipteran Insects (via OrthoDB v9.1) ( EOG090W02G4 )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Bombyx mori
Silkmoth
Danaus plexippus
Monarch butterfly
Heliconius melpomene
Postman butterfly
Apis florea
Little honeybee
Apis mellifera
Western honey bee
Bombus impatiens
Common eastern bumble bee
Bombus terrestris
Buff-tailed bumblebee
Linepithema humile
Argentine ant
Megachile rotundata
Alfalfa leafcutting bee
Nasonia vitripennis
Parasitic wasp
Nasonia vitripennis
Parasitic wasp
Dendroctonus ponderosae
Mountain pine beetle
Dendroctonus ponderosae
Mountain pine beetle
Dendroctonus ponderosae
Mountain pine beetle
Tribolium castaneum
Red flour beetle
Pediculus humanus
Human body louse
Rhodnius prolixus
Kissing bug
Cimex lectularius
Bed bug
Cimex lectularius
Bed bug
Acyrthosiphon pisum
Pea aphid
Acyrthosiphon pisum
Pea aphid
Zootermopsis nevadensis
Nevada dampwood termite
Orthologs in non-Insect Arthropods (via OrthoDB v9.1) ( EOG090X02DP )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Stegodyphus mimosarum
African social velvet spider
Daphnia pulex
Water flea
Orthologs in non-Arthropod Metazoa (via OrthoDB v9.1) ( EOG091G0DF7 )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
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Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
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Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
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Purple sea urchin
Strongylocentrotus purpuratus
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Purple sea urchin
Ciona intestinalis
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Gallus gallus
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Paralogs
Paralogs (via DIOPT v7.1)
Drosophila melanogaster (Fruit fly) (45)
2 of 10
2 of 10
2 of 10
2 of 10
1 of 10
1 of 10
1 of 10
1 of 10
1 of 10
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Human Disease Associations
FlyBase Human Disease Model Reports
    Disease Model Summary Ribbon
    Disease Ontology (DO) Annotations
    Models Based on Experimental Evidence ( 0 )
    Allele
    Disease
    Evidence
    References
    Potential Models Based on Orthology ( 0 )
    Human Ortholog
    Disease
    Evidence
    References
    Modifiers Based on Experimental Evidence ( 0 )
    Allele
    Disease
    Interaction
    References
    Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
     
    Disease Associations of Human Orthologs (via DIOPT v7.1 and OMIM)
    Note that ortholog calls supported by only 1 or 2 algorithms (DIOPT score < 3) are not shown.
    Homo sapiens (Human)
    Gene name
    Score
    OMIM
    OMIM Phenotype
    DO term
    Complementation?
    Transgene?
    Functional Complementation Data
    Functional complementation data is computed by FlyBase using a combination of the orthology data obtained from DIOPT and OrthoDB and the allele-level genetic interaction data curated from the literature.
    Interactions
    Summary of Physical Interactions
    esyN Network Diagram
    Show neighbor-neighbor interactions:
    Select Layout:
    Legend:
    Protein
    RNA
    Selected Interactor(s)
    Interactions Browser

    Please see the Physical Interaction reports below for full details
    protein-protein
    Physical Interaction
    Assay
    References
    Summary of Genetic Interactions
    esyN Network Diagram
    Starting gene(s)
    Interaction type
    Interacting gene(s)
    Reference
    Starting gene(s)
    Interaction type
    Interacting gene(s)
    Reference
    External Data
    Linkouts
    BioGRID - A database of protein and genetic interactions.
    DroID - A comprehensive database of gene and protein interactions.
    InterologFinder - Protein-protein interactions (PPI) from both known and predicted PPI data sets.
    MIST (protein-protein) - An integrated Molecular Interaction Database
    Pathways
    Gene Group - Pathway Membership (FlyBase)
    Extracellular Spatzle Activating Pathway Core Components -
    In Drosophila, activation of the Toll pathway is controlled by the generation of a cleaved, active, Toll-binding form of spatzle ligand. Proteolytic activation of spatzle ligand lies downstream of several zymogen activation cascades that are initiated by different cues. In dorsal-ventral patterning, localized activation of spz results in ventral nuclear accumulation of dl. During viral and fungal and gram positive bacterial immune challenge, zymogen cascades are activated by extracellular pattern recognition receptors or virulence factor-mediated cleavage of the zymogen persephone (psh). (Adapted from FBrf0091014 and FBrf0223077).
    External Data
    Linkouts
    Genomic Location and Detailed Mapping Data
    Chromosome (arm)
    3L
    Recombination map
    3-17
    Cytogenetic map
    Sequence location
    3L:6,593,938..6,603,366 [-]
    FlyBase Computed Cytological Location
    Cytogenetic map
    Evidence for location
    65B5-65B5
    Limits computationally determined from genome sequence between P{PZ}l(3)0209402094 and P{lacW}l(3)L4060L4060
    Experimentally Determined Cytological Location
    Cytogenetic map
    Notes
    References
    Experimentally Determined Recombination Data
    Left of (cM)
    Right of (cM)
    Notes
    Stocks and Reagents
    Stocks (8)
    Genomic Clones (23)
    cDNA Clones (6)
     

    Please Note This section lists cDNAs and ESTs that fall within the genomic extent of the gene model, which may include cDNAs and ESTs of genes within introns, or of overlapping genes. Please see GBrowse for alignment of the cDNAs and ESTs to the gene model.

    cDNA clones, fully sequences
    BDGP DGC clones
      Other clones
        Drosophila Genomics Resource Center cDNA clones

        For each fully sequenced cDNA the DGRC maintains various forms of the cDNA (e.g tagged or untagged) in several different host vectors for subsequent cloning and expression in Drosophila and Drosophila cell lines.

          cDNA Clones, End Sequenced (ESTs)
          BDGP DGC clones
            Other clones
              RNAi and Array Information
              Linkouts
              DRSC - Results frm RNAi screens
              GenomeRNAi - A database for cell-based and in vivo RNAi phenotypes and reagents
              Antibody Information
              Laboratory Generated Antibodies
               
              Commercially Available Antibodies
               
              Other Information
              Relationship to Other Genes
              Source for database identify of
              Source for identity of: ndl CG10129
              Source for database merge of
              Additional comments
              Other Comments
              The non-protease domains of ndl do not influence the signaling pathway that establishes embryonic DV polarity.
              ndl has an integral role in the biogenesis of the vitelline membrane and may function in embryonic dorsal ventral patterning through creation of a matrix structure necessary for activity of the dorsal ventral protease cascade.
              Catalytic activity of the protease domain of the modular ndl protein is required for dorsoventral patterning of the embryo.
              The serine protease activity of ndl protein is essential for embryonic dorsoventral polarity. Active ndl protease is generated by autoproteolytic cleavage of a zymogen form. This activation is independent of the other known proteases involved in establishment of dorsoventral polarity and appears to occur symmetrically on the surface of the embryo.
              A follicular cell marker system that yields a visible phenotype within the mature egg shell allows direct comparison of a clone and its effect on the dorsal ventral pattern of the embryos. Follicular epithelium has a lack of a localised requirement for ndl protease activity.
              Phenotypic and genetic analysis reveals that ndl has two distinct roles important for embryogenesis: one in establishing dorsoventral polarity, the other in ensuring structural integrity of the egg.
              ndl is a somatic-dependent gene required to activate and localise the serine protease cascade that produces Tls ligand.
              Local activation of the protease cascade within the extra embryonic perivitelline compartment that defines embryonic dorsoventral polarity depends on a positional cue that is laid down during oogenesis outside the oocyte, ndl encodes an essential component of this cue. ndl function is required during oogenesis and also during the early stages of embryogenesis.
              Double mutant combinations of ndl with ea alleles demonstrate that spatial regulation of ea activity by localized zymogen activation is a key initial event in defining the polarity of the dorsal-ventral embryonic pattern.
              Strong dorsalizing mutants of ndl, snk, gd or pip have wild type axial ratios in pupae.
              Analysis of mosaic females indicates that the expression of ndl, pip and wbl is required in the somatic tissue, in the follicle cells that surround the oocyte, for the production of embryos with the correct dorsoventral axis.
              Origin and Etymology
              Discoverer
              Etymology
              Identification
              External Crossreferences and Linkouts ( 32 )
              Sequence Crossreferences
              NCBI Gene - Gene integrates information from a wide range of species. A record may include nomenclature, Reference Sequences (RefSeqs), maps, pathways, variations, phenotypes, and links to genome-, phenotype-, and locus-specific resources worldwide.
              GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
              GenBank Protein - A collection of sequences from several sources, including translations from annotated coding regions in GenBank, RefSeq and TPA, as well as records from SwissProt, PIR, PRF, and PDB.
              RefSeq - A comprehensive, integrated, non-redundant, well-annotated set of reference sequences including genomic, transcript, and protein.
              UniProt/Swiss-Prot - Manually annotated and reviewed records of protein sequence and functional information
              Other crossreferences
              Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
              Flygut - An atlas of the Drosophila adult midgut
              GenomeRNAi - A database for cell-based and in vivo RNAi phenotypes and reagents
              iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
              KEGG Genes - Molecular building blocks of life in the genomic space.
              MEROPS - An information resource for peptidases (also termed proteases, proteinases and proteolytic enzymes) and the proteins that inhibit them.
              modMine - A data warehouse for the modENCODE project
              Linkouts
              BioGRID - A database of protein and genetic interactions.
              DroID - A comprehensive database of gene and protein interactions.
              DRSC - Results frm RNAi screens
              FLIGHT - Cell culture data for RNAi and other high-throughput technologies
              FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
              FlyMine - An integrated database for Drosophila genomics
              Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
              InterologFinder - Protein-protein interactions (PPI) from both known and predicted PPI data sets.
              MIST (protein-protein) - An integrated Molecular Interaction Database
              Synonyms and Secondary IDs (9)
              Datasets (0)
              Study focus (0)
              Experimental Role
              Project
              Project Type
              Title
              References (142)