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  • Title: Primary structure of human alpha 2-macroglobulin. IV. Primary structure of two large CNBr fragments, located in the COOH-terminal part and accounting for 337 residues.
    Author: Kristensen T, Wierzbicki DM, Sottrup-Jensen L.
    Journal: J Biol Chem; 1984 Jul 10; 259(13):8313-7. PubMed ID: 6203907.
    Abstract:
    The amino acid sequences have been determined for two CNBr fragments of human alpha 2-macroglobulin which, due to the presence of an uncleaved Hse-Thr bond, form an Mr = 40,000 fragment. These fragments are located in the COOH-terminal part of alpha 2-macroglobulin (CB21, residues 955-1185 and CB22, residues 1186-1291). CB21 contains one glucosamine-based carbohydrate group attached to Asn-14 and one internal disulfide bridge (Cys-102 bound to Cys-150). CB21 and CB22 account for 337 of the 1451 residues of the subunit of alpha 2-macroglobulin.
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