Amino acid sequence of rat epidermal thiol proteinase inhibitor

The complete amino acid sequence of rat epidermal thiol proteinase inhibitor was determined. The unique 103-residue sequence was derived by analysis of two peptides generated by limited proteolysis of the native inhibitor with Staphylococcus aureus V8 protease and of three cyanogen bromide fragments. The protein has a high degree of sequence homology to either rat liver or human leucocyte inhibitor but is not identical and may represent a new type of low molecular weight thiol proteinase inhibitors.