1FA2:
reference: Crystallization, molecular replacement solution, and refinement of tetrameric beta-amylase from sweet potato., Cheong CG, Eom SH, Chang C, Shin DH, Song HK, Min K, Moon JH, Kim KK, Hwang KY, Suh SW, Proteins 1995 Feb;21(2):105-17. PMID: 7777485

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