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General Information
Symbol
Dmel\kra
Species
D. melanogaster
Name
krasavietz
Annotation Symbol
CG2922
Feature Type
FlyBase ID
FBgn0250753
Gene Model Status
Stock Availability
Gene Summary
krasavietz (kra) encodes a translational regulator that is able to interact with the translation initiation factor encoded by eIF2β. It is involved in axon guidance, long-term memory, and alcohol addiction. [Date last reviewed: 2019-03-14] (FlyBase Gene Snapshot)
Also Known As

exba, eIF-5C, l(3)03022, ECP, extra bases

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
3-47.5
RefSeq locus
NT_033777 REGION:5595364..5601136
Sequence
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
GO Summary Ribbons
Gene Ontology (GO) Annotations (16 terms)
Molecular Function (4 terms)
Terms Based on Experimental Evidence (4 terms)
CV Term
Evidence
References
inferred from physical interaction with FLYBASE:RpL5; FB:FBgn0064225
inferred from physical interaction with FLYBASE:shot; FB:FBgn0013733
inferred from direct assay
inferred from direct assay
inferred from physical interaction with FLYBASE:eIF2β; FB:FBgn0004926
Terms Based on Predictions or Assertions (0 terms)
Biological Process (7 terms)
Terms Based on Experimental Evidence (7 terms)
CV Term
Evidence
References
inferred from mutant phenotype
inferred from mutant phenotype
involved_in long-term memory
inferred from mutant phenotype
inferred from mutant phenotype
(assigned by UniProt )
inferred from direct assay
involved_in oogenesis
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from genetic interaction with FLYBASE:shot; FB:FBgn0013733
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
involved_in long-term memory
traceable author statement
Cellular Component (5 terms)
Terms Based on Experimental Evidence (5 terms)
CV Term
Evidence
References
inferred from direct assay
located_in axon
inferred from direct assay
located_in cytoplasm
inferred from direct assay
located_in filopodium
inferred from direct assay
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
is_active_in cytoplasm
inferred from biological aspect of ancestor with PANTHER:PTN000368070
(assigned by GO_Central )
Gene Group (FlyBase)
Protein Family (UniProt)
Belongs to the BZW family. (Q9VNE2)
Summaries
Gene Snapshot
krasavietz (kra) encodes a translational regulator that is able to interact with the translation initiation factor encoded by eIF2β. It is involved in axon guidance, long-term memory, and alcohol addiction. [Date last reviewed: 2019-03-14]
Protein Function (UniProtKB)
May be involved in memory formation.
(UniProt, Q9VNE2)
Gene Model and Products
Number of Transcripts
7
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\kra 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

Low-frequency RNA-Seq exon junction(s) not annotated.

Annotated transcripts do not represent all possible combinations of alternative exons and/or alternative promoters.

Annotated transcripts do not represent all supported alternative splices within 5' UTR.

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)
FBtr0078744
2123
422
FBtr0078749
1847
422
FBtr0078746
1906
422
FBtr0078748
2026
422
FBtr0078750
1701
422
FBtr0078747
1776
422
FBtr0078745
1614
422
Additional Transcript Data and Comments
Reported size (kB)
Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
RefSeq ID
GenBank
FBpp0078393
49.2
422
5.46
FBpp0078398
49.2
422
5.46
FBpp0078395
49.2
422
5.46
FBpp0078397
49.2
422
5.46
FBpp0078399
49.2
422
5.46
FBpp0078396
49.2
422
5.46
FBpp0078394
49.2
422
5.46
Polypeptides with Identical Sequences

The group(s) of polypeptides indicated below share identical sequence to each other.

422 aa isoforms: kra-PA, kra-PB, kra-PC, kra-PD, kra-PE, kra-PF, kra-PG
Additional Polypeptide Data and Comments
Reported size (kDa)
Comments
External Data
Crossreferences
InterPro - A database of protein families, domains and functional sites
Linkouts
Sequences Consistent with the Gene Model
Nucleotide / Polypeptide Records
 
Mapped Features

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

External Data
Crossreferences
Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
Linkouts
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
organism

Comment: maternally deposited

Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
mass spectroscopy
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Evidence
References
inferred from direct assay
located_in axon
inferred from direct assay
located_in cytoplasm
inferred from direct assay
located_in filopodium
inferred from direct assay
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

GBrowse - Visual display of RNA-Seq signals

View Dmel\kra 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
BDGP expression data - Patterns of gene expression in Drosophila embryogenesis
DRscDB - A single-cell RNA-seq resource for data mining and data comparison across species
EMBL-EBI Single Cell Expression Atlas - Single cell expression across species
FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
FlyAtlas2 - A Drosophila melanogaster expression atlas with RNA-Seq, miRNA-Seq and sex-specific data
Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
Flygut - An atlas of the Drosophila adult midgut
Images
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 35 )
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 kra
Transgenic constructs containing regulatory region of kra
Aberrations (Deficiencies and Duplications) ( 2 )
Inferred from experimentation ( 2 )
Inferred from location ( 0 )
Alleles Representing Disease-Implicated Variants
Phenotypes
Orthologs
Human Orthologs (via DIOPT v8.0)
Homo sapiens (Human) (3)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
14 of 15
Yes
Yes
12 of 15
No
Yes
1 of 15
No
No
Model Organism Orthologs (via DIOPT v8.0)
Mus musculus (laboratory mouse) (3)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
13 of 15
Yes
Yes
12 of 15
No
Yes
1 of 15
No
No
Rattus norvegicus (Norway rat) (2)
13 of 13
Yes
Yes
12 of 13
No
Yes
Xenopus tropicalis (Western clawed frog) (3)
8 of 12
Yes
Yes
7 of 12
No
Yes
1 of 12
No
No
Danio rerio (Zebrafish) (3)
14 of 15
Yes
Yes
12 of 15
No
Yes
12 of 15
No
Yes
Caenorhabditis elegans (Nematode, roundworm) (1)
1 of 15
Yes
No
Arabidopsis thaliana (thale-cress) (2)
8 of 9
Yes
Yes
8 of 9
Yes
Yes
Saccharomyces cerevisiae (Brewer's yeast) (1)
1 of 15
Yes
No
Schizosaccharomyces pombe (Fission yeast) (1)
1 of 12
Yes
No
Ortholog(s) in Drosophila Species (via OrthoDB v9.1) ( EOG091908YO )
Organism
Common Name
Gene
AAA Syntenic Ortholog
Multiple Dmel Genes in this Orthologous Group
Drosophila suzukii
Spotted wing Drosophila
Drosophila simulans
Drosophila sechellia
Drosophila erecta
Drosophila yakuba
Drosophila ananassae
Drosophila pseudoobscura pseudoobscura
Drosophila persimilis
Drosophila willistoni
Drosophila virilis
Drosophila mojavensis
Drosophila grimshawi
Orthologs in non-Drosophila Dipterans (via OrthoDB v9.1) ( EOG091505HM )
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
Aedes aegypti
Yellow fever mosquito
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) ( EOG090W06K2 )
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
Bombus impatiens
Common eastern bumble bee
Bombus terrestris
Buff-tailed bumblebee
Linepithema humile
Argentine ant
Megachile rotundata
Alfalfa leafcutting bee
Nasonia vitripennis
Parasitic wasp
Dendroctonus ponderosae
Mountain pine beetle
Tribolium castaneum
Red flour beetle
Pediculus humanus
Human body louse
Rhodnius prolixus
Kissing bug
Cimex lectularius
Bed bug
Acyrthosiphon pisum
Pea aphid
Zootermopsis nevadensis
Nevada dampwood termite
Zootermopsis nevadensis
Nevada dampwood termite
Orthologs in non-Insect Arthropods (via OrthoDB v9.1) ( EOG090X05VQ )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Strigamia maritima
European centipede
Ixodes scapularis
Black-legged tick
Stegodyphus mimosarum
African social velvet spider
Stegodyphus mimosarum
African social velvet spider
Daphnia pulex
Water flea
Orthologs in non-Arthropod Metazoa (via OrthoDB v9.1) ( EOG091G090E )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Strongylocentrotus purpuratus
Purple sea urchin
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Paralogs
Paralogs (via DIOPT v8.0)
Drosophila melanogaster (Fruit fly) (0)
No records found.
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
Disease Associations of Human Orthologs (via DIOPT v8.0 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
Summary of Genetic Interactions
esyN Network Diagram
esyN Network Key:
Suppression
Enhancement

Please look at the allele data for full details of the genetic interactions
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.
MIST (genetic) - An integrated Molecular Interaction Database
MIST (protein-protein) - An integrated Molecular Interaction Database
Pathways
Signaling Pathways (FlyBase)
Metabolic Pathways
External Data
Linkouts
Genomic Location and Detailed Mapping Data
Chromosome (arm)
3R
Recombination map
3-47.5
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
83B4-83B5
Left limit from in situ hybridisation (FBrf0067338) Right limit from in situ hybridisation (FBrf0067338)
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
83B4-83B4
83B4-83B5
(determined by in situ hybridisation)
83B4-83B2
(determined by in situ hybridisation)
Experimentally Determined Recombination Data
Location
Left of (cM)
Right of (cM)
Notes
Stocks and Reagents
Stocks (19)
Genomic Clones (14)
 

Please Note FlyBase no longer curates genomic clone accessions so this list may not be complete

cDNA Clones (391)
 

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 sequenced
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)
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: eIF-5C CG2922

Source for identity of: kra exba

Source for database merge of

Source for merge of: eIF-5C l(3)03022

Source for merge of: eIF-5C extra-bases

Source for merge of: exba l(3)j9B6

Source for merge of: eIF-5C anon-WO0172774.49

Additional comments

FlyBase curator comment: Originally named 'exba/extra bases' according to ADRC abstracts from the Lee group (FBrf0146421, FBrf0157123), but changed to 'kra/krasavietz' based on preference indicated in subsequently published research paper (FBrf0201378) by same group.

Source for identity of eIF-5C CG2922 was sequence comparison ( date:010210 ).

Source for merge of eIF-5C anon-WO0172774.49 was sequence comparison ( date:051113 ).

Other Comments

dsRNA made from templates generated with primers directed against this gene.

exba has a role in long-term memory.

exba is required for lineage specification in the nervous system.

Mutants produce extra neurons.

Origin and Etymology
Discoverer

L. and Y. Jan.

Etymology
Identification
External Crossreferences and Linkouts ( 80 )
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 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
BDGP expression data - Patterns of gene expression in Drosophila embryogenesis
Drosophila Genomics Resource Center - Drosophila Genomics Resource Center (DGRC) cDNA clones
DRscDB - A single-cell RNA-seq resource for data mining and data comparison across species
EMBL-EBI Single Cell Expression Atlas - Single cell expression across species
Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
FlyAtlas2 - A Drosophila melanogaster expression atlas with RNA-Seq, miRNA-Seq and sex-specific data
Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
Flygut - An atlas of the Drosophila adult midgut
FlyMine - An integrated database for Drosophila genomics
GenomeRNAi - A database for cell-based and in vivo RNAi phenotypes and reagents
InterPro - A database of protein families, domains and functional sites
KEGG Genes - Molecular building blocks of life in the genomic space.
MARRVEL_MODEL - MARRVEL (model organism gene)
modMine - A data warehouse for the modENCODE project
Linkouts
ApoDroso - Functional genomic database for photoreceptor development, survival and function
BioGRID - A database of protein and genetic interactions.
DroID - A comprehensive database of gene and protein interactions.
DRSC - Results frm RNAi screens
FlyCyc Genes - Genes from a BioCyc PGDB for Dmel
MIST (genetic) - An integrated Molecular Interaction Database
MIST (protein-protein) - An integrated Molecular Interaction Database
Synonyms and Secondary IDs (36)
Reported As
Symbol Synonym
anon-WO0172774.49
chr3R:1423015..1423173
l(3)j9B6
Secondary FlyBase IDs
  • FBgn0061514
  • FBgn0046382
  • FBgn0010791
  • FBgn0037346
  • FBgn0011418
Datasets (0)
Study focus (0)
Experimental Role
Project
Project Type
Title
References (121)