2hnk

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[[Image:2hnk.jpg|left|200px]]
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{{Structure
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|LIGAND= <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2hnk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hnk OCA], [http://www.ebi.ac.uk/pdbsum/2hnk PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2hnk RCSB]</span>
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'''Crystal structure of SAM-dependent O-methyltransferase from pathogenic bacterium Leptospira interrogans'''
'''Crystal structure of SAM-dependent O-methyltransferase from pathogenic bacterium Leptospira interrogans'''
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[[Category: Hou, X.]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 06:29:34 2008''
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Revision as of 03:29, 4 May 2008

Template:STRUCTURE 2hnk

Crystal structure of SAM-dependent O-methyltransferase from pathogenic bacterium Leptospira interrogans


Overview

The S-adenosylmethionine (SAM)-dependent O-methyltransferase from Leptospira interrogans (LiOMT) expressed by gene LA0415 belongs to the Methyltransf_3 family (Pfam PF01596). In this family all of the five bacterial homologues with known function are reported as SAM-dependent O-methylstransferases involved in antibiotic production. The crystal structure of LiOMT in complex with S-adenosylhomocysteine reported here is the first bacterial protein structure in this family. The LiOMT structure shows a conserved SAM-binding region and a probable metal-dependent catalytic site. The molecules of LiOMT generate homodimers by N-terminal swapping, which assists the pre-organization of the substrate-binding site. Based on the sequence and structural analysis, it is implied by the catalytic and substrate-binding site that the substrate of LiOMT is a phenolic derivative, which probably has a large ring-shaped moiety.

About this Structure

2HNK is a Single protein structure of sequence from Leptospira interrogans. Full crystallographic information is available from OCA.

Reference

Crystal structure of SAM-dependent O-methyltransferase from pathogenic bacterium Leptospira interrogans., Hou X, Wang Y, Zhou Z, Bao S, Lin Y, Gong W, J Struct Biol. 2007 Sep;159(3):523-8. Epub 2007 Apr 30. PMID:17561415 Page seeded by OCA on Sun May 4 06:29:34 2008

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