Sample

CHEMICAL DETAILS SAMPLE ORIGIN SAMPLE PREP./SIZE PYROL. CONDITIONS TOTAL ION COUNTS

MYOGLOBIN, Type 1 (from equine skeletal muscle) for amino acid composition see Table 13 Sigma Chemical Corp., St. Louis, USA suspension in methanol; 10 yg standard 4 X 104

remarks - The very low peak at m/z 34 indicates the absence of Cys residues and probably represents a minor fragment of Met (mainly producing methanethiol, m/z 48). As in the case of Cytochrome C (Spectrum B.9) the large peaks at m/z 69 and 83 probably represent the abundant Lys residues.

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