title: Isolation and characterization of abl gene sequences in Calliphora erythrocephala.
abstract: Screening of genomic DNA libraries with hybridization probes derived from a Drosophila melanogaster c-abl proto-oncogene homologue resulted in the isolation of a set of related sequences from the dipteran Calliphora erythrocephala. Although the region encompassing the c-abl protein kinase domain encodes a polypeptide extremely similar to the Drosophila gene, considerable inter- and intraspecific divergence is found adjacent to this region. Restriction-site heterogeneity and cross-hybridization studies between individual cloned isolates suggest that abl homologues represent a small gene family in the Calliphora genome. As is the case in Drosophila, abl-related transcripts appear to be low in abundance, are synthesized during oogenesis and stored as a maternal mRNA.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics; D004175:Diptera / Q000235:genetics*; D004331:Drosophila melanogaster / Q000235:genetics; D005786:Gene Expression Regulation; D005810:Multigene Family; D009693:Nucleic Acid Hybridization; D009865:Oocytes; D011519:Proto-Oncogenes; D012689:Sequence Homology, Nucleic Acid
chemical_list: D004247:DNA