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Cloning and characterization of a 70 kDa heat shock cognate gene (HSC70) from two species of Chironomus
Author(s) -
KarounaRenier N. K.,
Yang W.J.,
Rao K. Ranga
Publication year - 2003
Publication title -
insect molecular biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.955
H-Index - 93
eISSN - 1365-2583
pISSN - 0962-1075
DOI - 10.1046/j.1365-2583.2003.00383.x
Subject(s) - biology , gene , chironomus , genomic dna , microbiology and biotechnology , open reading frame , cloning (programming) , genetics , intron , untranslated region , messenger rna , peptide sequence , botany , larva , chironomidae , computer science , programming language
In the present study we carried out the isolation and characterization of an HSC70 gene from two midges, Chironomus tentans and C. yoshimatsui . The HSC70 cDNAs are approximately 2424 ( C. tentans ) and 2464 bp ( C. yoshimatsui ) long, and contain 1950 and 1956 bp open reading frames, respectively. Analysis of genomic DNA revealed the presence of two introns in these genes. The 5′ untranslated regions of the HSC70 genes are adenosine‐rich, a feature found in inducible HSP70 genes. The nucleotide and amino acid sequences exhibit high identity with cytosolic HSC70s from other Dipterans. Northern hybridization indicated that HSC70 is expressed at all developmental stages, from embryo to adult, and Southern hybridization confirmed the presence of multiple HSP70 genes in Chironomus .