A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Allele Dmel\grk1

General Information
SymbolDmel\grk1SpeciesD. melanogaster
NameFlyBase IDFBal0005209
Feature typealleleAssociated geneDmel\grk
Also Known AsgrkDC, grkDC29
Map ( GBrowse ) GBrowse View Helpdetailed view FBal0005209 FBal0031406 FBal0005213 FBal0031405 FBal0270011 FBal0031407 FBal0031409 FBal0031408 FBal0031411 FBal0031404
Allele class
Mutagenethyl methanesulfonate
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Description
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FB2013_03
FB2013_02
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hide Nature of the Allele
Allele class
Mutagen
Mutations Mapped to the Genome
Type
Location
Additional Notes
References
point mutation
evidence=experimental
na_change=C8431693T
pr_change=A246V|grk-PA
reported_na_change=C2424T
reported_pr_change=A245V
Associated Sequence Data
DDBJ /
EMBL /
GenBank
DNA sequence
Protein sequence
Name
 
UniProtKB/Swiss-Prot
UniProtKB/TrEMBL
Progenitor genotype
Nature of the lesion
Statement
Reference
Amino acid replacement: A245V. Nucleotide substitution: C2424T.
Amino acid replacement: A245V.
Cytology
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microtubule & oocyte
oocyte & microtubule (with grk2B6)
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Statement
Reference
In grk2B6/grk1 oocytes the anterior-posterior gradient of microtubule concentration seen in wild-type is abolished. However, concentration of microtubules around the mis-localized nucleus persists.
Ovaries from grk1/grk2B6 mutant females show a range of defects. In mildly affected egg chambers where the germinal vesicle has moved anterior and dorsal, border cells complete posterior migration but fail to migrate dorsally.
Microtubule cytoskeleton in grk2B6/grk1 oocytes is defective due to premature streaming of the microtubules.
grk1/grk2 heterozygous females display fused egg chambers and gaps in the follicular epithelium that uncover the nurse cells. Eggs derived from these females exhibit strong ventralised phenotype.
Reduction or absence of dorsal appendages (ventralization) with increase in main body egg shell. Micropyle at both ends of eggs, embryos ventralized.
An enlarged mass of mesodermal cells invaginates on the ventral side of the embryo, the enlarged mesoderm is often organised into two ventral furrows. Organisation is lost in later stages of development and a mass of mesodermal cells fills the ventral half of the embryo. Respiratory appendages are completely absent and only the ventral most portion of the operculum is present.
phenotype of eggs and embryos: intermediate and strong
 
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Statement
Reference
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Statement
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Comments
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Discoverer
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Strong grk allele.
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hide Synonyms & Secondary IDs ( 4 )
Reported As
Symbol Synonym
grk1
 
Name Synonym
Secondary FlyBase IDs
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