1h46

The catalytic module of Cel7D from Phanerochaete chrysosporium as a chiral selector: Structural studies of its complex with the b-blocker (R)-propranolol

spinqualitylabelsall models 1h46, resolution 1.52Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1h46 is a 1 chain structure with sequence from Phanerochaete chrysosporium. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: NAG, RNP NonStd Res: PCA Related: 1gpi Activity: Cellulose 1,4-beta-cellobiosidase (non-reducing end), with EC number 3.2.1.91 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Previous investigations have shown that the major cellobiohydrolase of Phanerochaete chrysosporium, Cel7D (CBH 58), can be used to separate the enantiomers of a number of drugs, including adrenergic beta blockers such as propranolol. The structural basis of this enantioselectivity is explored here. A 1.5 A X-ray structure of the catalytic domain of Cel7D in complex with (R)-propranolol showed the ligand bound at the active site in glucosyl-binding subsites -1/+1. The catalytic residue Glu207 makes a strong charge-charge interaction with the secondary amine of (R)-propranolol; this is supported by a second interaction of the amine with the nearby Asp209. The aromatic naphthyl group stacks onto the indole ring of Trp373 (normally the glucosyl-binding platform of subsite +1). Other factors also contribute to good complementarity between the ligand and the substrate-binding cleft of the enzyme. Comparison with the previous structure of a related cellulase, Cel7A from Trichoderma reesei, in complex with (S)-propranolol strongly suggests that these enzymes will bind the (S)-enantiomer in a very similar manner, distinct from their mode of binding to (R)-propranolol. Tighter binding of both enzymes to the (S)-enantiomer is largely explained by two additional hydrogen-bonding interactions with its hydroxyl group. The distinct preference for the (R)-enantiomer is probably a consequence of structural differences near the naphthyl group of the ligand. The catalytic module of Cel7D from Phanerochaete chrysosporium as a chiral selector: structural studies of its complex with the beta blocker (R)-propranolol.,Munoz IG, Mowbray SL, Stahlberg J Acta Crystallogr D Biol Crystallogr. 2003 Apr;59(Pt 4):637-43. Epub 2003, Mar 25. PMID:12657782 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cellobiohydrolase 3D structures Glucanase 3D structures

Proteopedia Page Contributors and Editors (what is this?)

OCA