The human cystatin gene family: cloning of three members and evolutionary relationship between cystatins and Bowman-Birk type proteinase inhibitors
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The human cystatin gene family: cloning of three members and evolutionary relationship between cystatins and Bowman-Birk type proteinase inhibitors
Biomed Biochim Acta.
1991.
Abstract
Three genes from the human cystatin gene family have been isolated from a bacteriophage lambda library containing Hind III digests of human genomic DNA. The cloned genes were identified with three DNA probes each containing exon 1, exon 2 and exon 3 of the CST1 gene for cystatin SN. The genes, which we name CST2B, CST4, and CST5, are 6.8 kb, 5.4 kb and 12.5 kb in size, respectively. Statistical analysis of DNA sequence homology elucidated that the second and third exons of cystatin (family II) genes and three cystatin (family II) gene like segments in the kininogen (family III) genes are significantly homologous to the gene segments coding for the inhibitory domains of Bowman-Birk type proteinase inhibitors.
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