Primary structure of hemocyanin subunit c from Panulirus interruptus.
Eur J Biochem
; 206(1): 243-9, 1992 May 15.
Article
em En
| MEDLINE
| ID: mdl-1587275
ABSTRACT
The amino acid sequence of the hemocyanin subunit c from the spiny lobster, Panulirus interruptus, has been determined. The elucidation was mainly based on three digests, with CNBr, trypsin and endoproteinase Glu-C, respectively. Additional evidence was obtained by sequencing of peptides from an endoproteinase Lys-C digest. Subunit c is a polypeptide with 661 amino acid residues and with a carbohydrate group attached to residue 476 in the third domain. No heterogeneity was observed. The degree of identity with subunit a is 59%. Some differences with subunit a are an N-terminal extension of six residues, a one-residue C-terminal extension, and a three-residue deletion. Furthermore, carbohydrate attachment is in a different position, as are most half-cystine residues. Limited trypsinolysis resulted in cleavage at the same site as in subunits a and b.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Hemocianinas
Limite:
Animals
Idioma:
En
Revista:
Eur J Biochem
Ano de publicação:
1992
Tipo de documento:
Article
País de afiliação:
Holanda