Human mesotrypsin (PRSS3) unliganded and in autoinhibited (E*) conformation

Discovery of an autoinhibited conformation in mesotrypsin reveals a new strategy for selective serine protease inhibition.

Brain trypsinogen,Mesotrypsinogen,Serine protease 3,Serine protease 4,Trypsin III,Trypsin IV

IVGGYTCEENSLPYQVSLNSGSHFCGGSLISEQWVVSAAHCYKTRIQVRLGEHNIKVLEGNEQFINAAKIIRHPKYNRDT
LDNDIMLIKLSSPAVINARVSTISLPTTPPAAGTECLISGWGNTLSFGADYPDELKCLDAPVLTQAECKASYPGKITNSM
FCVGFLEGGKDSCQRDAGGPVVCNGQLQGVVSWGHGCAWKNRPGVYTKVYNYVDWIKDTIAANS

1.8M ammonium sulfate, 0.1M Bis-Tris pH 5.5

National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Serine protease, autoinhibited, conformational variability, HYDROLASE

IVGGYTCEENSLPYQVSLNSGSHFCGGSLISEQWVVSAAHCYKTRIQVRLGEHNIKVLEGNEQFINAAKIIRHPKYNRDT
LDNDIMLIKLSSPAVINARVSTISLPTTPPAAGTECLISGWGNTLSFGADYPDELKCLDAPVLTQAECKASYPGKITNSM
FCVGFLEGGKDSCQRDSGGPVVCNGQLQGVVSWGHGCAWKNRPGVYTKVYNYVDWIKDTIAANS