1G66:
reference: Multiple conformations of catalytic serine and histidine in acetylxylan esterase at 0.90 A., Ghosh D, Sawicki M, Lala P, Erman M, Pangborn W, Eyzaguirre J, Gutierrez R, Jornvall H, Thiel DJ, J Biol Chem 2001 Apr 6;276(14):11159-66. PMID: 11134051

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