1QXP: Crystal Structure Of A Mu-Like Calpain
reference: Crystal structure of a micro-like calpain reveals a partially activated conformation with low Ca2+ requirement., Pal GP, De Veyra T, Elce JS, Jia Z, Structure (Camb) 2003 Dec;11(12):1521-6. PMID: 14656436

This OCA Structure page
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