the usefulness of gamma-sm and beta-msp in determining the origin of metastatic tumors has also been shown . gamma-sm is a glycoprotein with a molecular weight of 26,079 for the peptide portion , of which the amino acid sequence is identical to so-called psa and homologous with serine proteases ( the kallikrein family ) .
C0017968
glycoprotein
C0138741
psa