Skeletal Muscle Connectin Primary Structures as Related to Animal Species and Muscle Type

摘要

Differences in molecular weights and partial amino acid sequences of connectin(titin) were determined for cattle, pig and chicken skeletal mus- cles. Peptide mapping analysis results differed according to animal spe- cies. Amino acid sequences deduced from partial nucleotide sequences of connectin also differed according to animal species at immunoglob- ulin-like (Ig) and fibronectin type 3 (FN3) domains. In chicken, the mo- lecular weight of connectin from leg muscles was higher than that from pectoral muscles. Differences in meat texture and conditioning may re- late to connectin and extent of its breakdown.