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Protobothrops flavoviridis (Crotalinae) venom gland phospholipase A 2 (PLA 2 ) isozyme genes have evolved in an accelerated manner to acquire diverse physiological activities in their products. For elucidation of the multiplication mechanism of PLA 2 genes, a 25,026bp genome segment harboring five PLA 2 isozyme genes was obtained from Amami-Oshima P. flavoviridis liver...
Transcription factor IIA (TFIIA) is one of the general transcription factors for RNA polymerase II and composed of three subunits, TFIIAα, TFIIAβ and TFIIAγ. TFIIAα and TFIIAβ are encoded by a single gene (TFIIAαβ) and mature through internal cleavage of TFIIAαβ. In this study, we found that structures of TFIIAαβ and TFIIAγ are highly homologous with each mammalian counterpart. Exon–intron organizations...
We have cloned a new mouse ATP-binding cassette (ABC) transporter, Abcg4, from a complementary DNA (cDNA) library of mouse brain. The cloned Abcg4 cDNA encodes a protein consisting of 646 amino acids and including one ATP-binding cassette and six transmembrane domains. The Abcg4 protein exhibits high identity (96%) with human ABCG4 in terms of the amino acid sequence. Fluorescence in situ hybridization...
Fertilin is reported to be a heterodimeric protein composed of A Disintegrin And Metalloprotease 1 (ADAM1, fertilin α) and ADAM2 (fertilin β) located on the sperm surface. In the process of clarifying the molecular basis of mouse ADAM1, we have identified two intron-less mouse genes encoding different isoforms of ADAM1, termed ADAM1a and ADAM1b. The amino acid sequences of ADAM1a and ADAM1b deduced...
Five members of the RecQ helicase family, RECQL, WRN, BLM, RTS and RECQL5, have been found in human and three of them (WRN, BLM and RTS) were disclosed to be the genes responsible for Werner, Bloom and Rothmund–Thomson syndromes, respectively. RECQL5 (RecQ helicase protein-like 5) was isolated as the fifth member of the family in humans through a search of homologous expressed sequence tags. The gene...
Five members of the RecQ helicase family, RECQL, WRN, BLM, RECQL4 and RECQL5 have been identified in humans. WRN and BLM have been demonstrated to be the responsible genes in Werner and Bloom syndromes, respectively. RECQL4 (RecQ helicase protein-like 4) was identified as a fourth member of the human RecQ helicase family bearing the helicase domain, and it was subsequently shown to be the responsible...
The structure of the mouse S-adenosylmethionine decarboxylase (AdoMetDC) gene has been determined. The mouse gene (AMD1) consisted of eight exons and seven introns, similar to the rat AdoMetDC gene, and was mapped to chromosome 10. The characteristics of AMD1 gene were as follows: (1) The region of the promoter necessary for maximal transcriptional activity was located about 400 nucleotides upstream...
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