FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Human Disease Model Report: kidney disease (postulated), SRC-kinase-related
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General Information
Name
kidney disease (postulated), SRC-kinase-related
FlyBase ID
FBhh0000546
Disease Ontology Term
Parent Disease
OMIM
Overview

Drosophila nephrocytes are functionally homologous to vertebrate kidney podocytes; in both, slit diaphragms function as molecular filters during the process of blood and haemolymph filtration. In Drosophila larval nephrocytes, it has been shown that that diaphragm stability and the balance between slit diaphragm damage and repair are controlled by SRC-dependent phosphorylation of diaphragm components (FBrf0223688). This work was done using the fly Src family kinase, Src64B. Loss-of-function alleles, RNAi-targeting constructs, and alleles caused by insertional mutagenesis have been generated for Src64B.

There are multiple members of the Src family of protein tyrosine kinases in both human and Drosophila: 9 human genes and 3 fly genes.

Animals homozygous for an amorphic mutation of Src64B survive to adult stage, but females are semi-sterile. In third-instar larvae, nephrocytes exhibit morphological changes. In a chemically-induced model of kidney disease using fly larvae (FBhh0000545), hyperactivation of Src64B is observed. Many genetic and physical interactions have been described for Dmel\Src64B; see below and in the Src64B gene report.

[updated Jun. 2017 by FlyBase; FBrf0222196]

Disease Summary Information
Disease Summary: kidney disease (postulated), SRC-kinase-related
OMIM report
Human gene(s) implicated
Symptoms and phenotype

Loss of Src64B activity leads to a reduction in the number of filtration diaphragms in larval nephrocytes. Diaphragm injury caused by either attenuation or hyperactivation of Src64B can be repaired upon return to physiological levels of Src64B activity. When diaphragm damage is induced by administration of the drug puromycin aminonucleoside, hyperactivation of Src64B is observed.

Genetics
Cellular phenotype and pathology
Molecular information

Src family kinase is a family of non-receptor tyrosine kinases that includes nine members in humans. Src family kinases contain six conserved domains: an N-terminal myristoylated segment, a SH2 domain, a SH3 domain, a linker region, a tyrosine kinase domain, and C-terminal tail. Src family kinases interact with many cellular cytosolic, nuclear and membrane proteins, modifying these proteins by phosphorylation of tyrosine residues. [from HGNC, Gene Family: Src family tyrosine kinases; http://www.genenames.org/cgi-bin/genefamilies/set/1388]

External links
    Disease synonyms
    nephropathy (postulated), SRC-kinase-related
    nephrosis (postulated), SRC-kinase-related
    Ortholog Information
    Human gene(s) in FlyBase
      Other mammalian ortholog(s) used
        D. melanogaster Gene Information (1)
        Gene Snapshot
        Src oncogene at 64B (Src64B) encodes a Src family nonreceptor tyrosine kinase. It has many biological roles, including ring canal morphogenesis in oogenesis and the male germline, microfilament ring constriction during cellularization, and modulation of growth and apoptosis. Some of its roles overlap with those of the product of Src42A. [Date last reviewed: 2019-03-14]
        Gene Groups / Pathways
        Comments on ortholog(s)

        Many to many: Dmel\Src64B is a member of the Src family of protein tyrosine kinases; there are 3 fly genes and 9 human genes in this family. Src64B is most closely related to human SRC and FYN, with which it shares 49-50% identity and 67% similarity. The other fly genes in this family are Src42A and Btk29A.

        Orthologs and Alignments from DRSC
        DIOPT - DRSC Integrative Ortholog Prediction Tool - Click the link below to search for orthologs in Humans
        Other Genes Used: Viral, Bacterial, Synthetic (0)
          Summary of Physical Interactions (11 groups)
          protein-protein
          Interacting group
          Assay
          References
          enzymatic study, autoradiography
          anti tag coimmunoprecipitation, anti tag western blot
          pull down, anti tag western blot, two hybrid
          pull down, anti tag western blot
          enzymatic study, autoradiography
          anti tag coimmunoprecipitation, anti tag western blot, two hybrid
          anti tag coimmunoprecipitation, western blot, multidimensional protein identification technology
          anti tag coimmunoprecipitation, western blot
          anti bait coimmunoprecipitation, anti tag western blot
          anti tag coimmunoprecipitation, anti tag western blot
          Alleles Reported to Model Human Disease (Disease Ontology) (9 alleles)
          Models Based on Experimental Evidence ( 4 )
          Modifiers Based on Experimental Evidence ( 8 )
          Allele
          Disease
          Interaction
          References
          Alleles Representing Disease-Implicated Variants
          Genetic Tools, Stocks and Reagents
          Sources of Stocks
          Contact lab of origin for a reagent not available from a public stock center.
          Bloomington Stock Center Disease Page
          Related mammalian, viral, bacterial, or synthetic transgenes
          Allele
          Transgene
          Publicly Available Stocks
          Selected Drosophila transgenes
          Allele
          Transgene
          Publicly Available Stocks
          RNAi constructs available
          Allele
          Transgene
          Publicly Available Stocks
          Selected Drosophila classical alleles
          Allele
          Allele class
          Mutagen
          Publicly Available Stocks
          amorphic allele - genetic evidence
          ends-out gene targeting
          References (5)