2bhs is a 4 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The enzyme O-acetylserine sulfhydrylase participates in the biosynthesis of l-cysteine in bacteria and plants. The structure of isoenzyme B (CysM) from Escherichia coli was established in a hexagonal crystal form at 2.7 A resolution (wild-type) and in a merohedrally twinned tetragonal crystal form at 2.1 A resolution (surface mutant). Structural superpositions revealed the variations with respect to isoenzyme A (CysK) and explained the different substrate specificities. A geometric model of the reaction catalyzed by CysM is proposed. Both isoenzymes are used for the production of l-amino acid derivatives as building blocks for the synthesis of peptides and peptidomimetic drugs. Since the structure of CysM revealed a remarkable main chain variation at the active center, it constitutes a further starting point for engineering mutants with novel substrate specificities.
Structure of the O-acetylserine sulfhydrylase isoenzyme CysM from Escherichia coli.,Claus MT, Zocher GE, Maier TH, Schulz GE Biochemistry. 2005 Jun 21;44(24):8620-6. PMID:15952768[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
↑ Claus MT, Zocher GE, Maier TH, Schulz GE. Structure of the O-acetylserine sulfhydrylase isoenzyme CysM from Escherichia coli. Biochemistry. 2005 Jun 21;44(24):8620-6. PMID:15952768 doi:10.1021/bi050485+
