FB2026_03 , released September 17, 2026
Allele: Dmel\Sgs4Ber
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General Information
Symbol
Dmel\Sgs4Ber
Species
D. melanogaster
Name
Berkeley
FlyBase ID
FBal0015525
Feature type
allele
Associated gene
Dmel\Sgs4
Associated Insertion(s)
Carried in Construct
Also Known As
Sgs-4Ber-1
Key Links
Allele class

amorphic allele - genetic evidence

Mutagen
Nature of the Allele
Allele class

amorphic allele - genetic evidence

(McNabb and Beckendorf, 1986, Muskavitch and Hogness, 1980)
Mutagen
natural population
(Lindsley and Zimm, 1992, Barnett et al., 1990, McNabb and Beckendorf, 1986, Shermoen and Beckendorf, 1982)
Progenitor genotype
Cytology
Description

Expression, relative to Oregon-R (%): 0. 5' sequences: -486 to -444 and -440 to -392 deleted with respect to Oregon-R (1 is the first base transcribed; the first T of an EcoRI site). Number of 21bp (7 aa) repeats: 22.

(Lindsley and Zimm, 1992)

95bp deletion extending from -496 to -392.

(Barnett et al., 1990)

Deletion of DNA.

(Saumweber et al., 1990)

Deletion of sequences between approximately -405bp and -480bp, upstream of Sgs4.

(Shermoen and Beckendorf, 1982)
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Variant Molecular Consequences
Associated Sequence Data
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
 
UniProtKB/Swiss-Prot
    UniProtKB/TrEMBL
      Expression Data
      Reporter Expression
      Additional Information
      Statement
      Reference
       
      Marker for
      Reflects expression of
      Reporter construct used in assay
      Human Disease Associations
      Disease Ontology (DO) Annotations
      Models Based on Experimental Evidence ( 0 )
      Disease
      Evidence
      References
      Modifiers Based on Experimental Evidence ( 0 )
      Disease
      Interaction
      References
      Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
       
      Disease-implicated variant(s)
       
      Phenotypic Data
      Phenotypic Class
      Phenotype Manifest In
      Detailed Description
      Statement
      Reference

      No DNAase-hypersensitive sites can be detected in the region 5' to Sgs4.

      (Shermoen and Beckendorf, 1982)
      External Data
      Interactions
      Show genetic interaction network for Enhancers & Suppressors
      Phenotypic Class
      Phenotype Manifest In
      Additional Comments
      Genetic Interactions
      Statement
      Reference
      Xenogenetic Interactions
      Statement
      Reference
      Complementation and Rescue Data
      Comments
      Images (0)
      Mutant
      Wild-type
      Stocks (0)
      Notes on Origin
      Discoverer

      Isolated from: Berkeley stock.

      (Lindsley and Zimm, 1992)
      Comments
      Comments

      The X chromosome of the stock was made isogenic before use.

      (Shermoen and Beckendorf, 1982)

      Deletion of sequences important for third instar induction but play a minor role in embryonic or early larval expression.

      (Barnett et al., 1990)
      External Crossreferences and Linkouts ( 0 )
      Synonyms and Secondary IDs (6)
      Reported As
      Symbol Synonym
      BER-1
      (Muskavitch and Hogness, 1980)
      Sgs-4Ber-1
      (Barnett et al., 1990, McNabb and Beckendorf, 1986)
      Sgs4Ber
      Name Synonyms
      BER 1
      (Shermoen and Beckendorf, 1982)
      Berkeley
      (Barnett et al., 1990)
      Berkeley-1
      (Barnett et al., 1990)
      Secondary FlyBase IDs
        References (8)