2F2K:
reference: Structure of a glutathione conjugate bound to the active site of aldose reductase., Singh R, White MA, Ramana KV, Petrash JM, Watowich SJ, Bhatnagar A, Srivastava SK, Proteins. 2006 Apr 25;64(1):101-110. PMID: 16639747

This OCA Structure page
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