1BMT:
reference: How a protein binds B12: A 3.0 A X-ray structure of B12-binding domains of methionine synthase., Drennan CL, Huang S, Drummond JT, Matthews RG, Lidwig ML, Science 1994 Dec 9;266(5191):1669-74. PMID: 7992050

This OCA Structure page
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