作者: Osamu Matsushita , Takaki Koide , Ryoji Kobayashi , Kazuhiro Nagata , Akinobu Okabe
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摘要: Clostridium histolyticum type I collagenase (ColG) has a segmental structure, S1+S2+S3a+S3b. S3a and S3b bound to insoluble collagen, but S2 did not, thus indicating that S3 forms collagen-binding domain (CBD). Because S3a+S3b showed the most efficient binding substrate, cooperative by both domains was suggested for enzyme. Monomeric (S3b) tandem (S3a+S3b) CBDs atelocollagen, which contains only collagenous region. However, they not bind telopeptides immobilized on Sepharose beads. These results site(s) CBD is(are) present in The peptides, (Pro-Hyp-Gly)(n) (Pro-Pro-Gly)(n), when n is large enough allow peptides have triple-helical conformation. They various with similar amino acid sequences or gelatin, lacks Glc-Gal disaccharide, attached side chains of hydroxylysine residues observations specifically recognizes conformation made three polypeptide