Atlantic Cod Trypsin Y--Member of a Novel Trypsin Group.

Autor: Spilliaert, Rémi, Gudmundsdóttir, Ágústa
Předmět:
Zdroj: Marine Biotechnology; 1999, Vol. 1 Issue 6, p598, 10p
Abstrakt: A unique trypsinogen complementary DNA has been isolated from an Atlantic cod (Gadus morhua) cDNA library. Its predicted amino acid sequence contains 249 residues with a putative polypeptide of 227 residues. The distinctive features of this polypeptide, referred to as trypsin Y, are its low number of hydrogen-bond-forming residues, high content of Met and Pro residues, and lack of one conserved disulfide bond. Alignments show that cod trypsinogen Y has only approximately 45% identity to the two Atlantic cod tryp-sinogens I and X and most vertebrate trypsinogens. However, it has more than 70% identity to three other fish trypsinogens from two Pleuronectes and an Antarctic Notothenia species. These four trypsinogens share some unique characteristics and form a novel group, here referred to as group III. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index