1TRM:
reference: The three-dimensional structure of Asn102 mutant of trypsin: role of Asp102 in serine protease catalysis., Sprang S, Standing T, Fletterick RJ, Stroud RM, Finer-Moore J, Xuong NH, Hamlin R, Rutter WJ, Craik CS, Science 1987 Aug 21;237(4817):905-9. PMID: 3112942

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