Table 4.

Protein identification of white-crowned sparrow pectoral myosin heavy chain (MyHC) isoforms based on comparison of peptide sequences obtained from tandem mass spectrometry with predicted protein sequences from the congener white-throated sparrow (Zonotrichia albicollis).

estimated mol. mass (kDa)	identified Zonotrichia albicollis protein	GenBank accession no.	apparent mol. mass (kDa)	no. sequenced peptides	coverage (%)	MyHC isoform classification
189.3	PREDICTED: myosin heavy chain, skeletal muscle, adult-like	929512244	190.7	129	56.92	adult fast 2
187	PREDICTED: myosin-4-like	929512236	187.7	119	62.01	adult fast 1