2ZBX:
reference: Crystal Structure of CYP105A1 (P450SU-1) in Complex with 1alpha,25-Dihydroxyvitamin D3(,)., Sugimoto H, Shinkyo R, Hayashi K, Yoneda S, Yamada M, Kamakura M, Ikushiro S, Shiro Y, Sakaki T, Biochemistry. 2008 Apr 1;47(13):4017-27. Epub 2008 Mar 4. PMID: 18314962

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