1u2y: Difference between revisions
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'''In situ extension as an approach for identifying novel alpha-amylase inhibitors, structure containing D-gluconhydroximo-1,5-lactam''' | {{Structure | ||
|PDB= 1u2y |SIZE=350|CAPTION= <scene name='initialview01'>1u2y</scene>, resolution 1.95Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene> and <scene name='pdbligand=GOX:(2S,3S,4R,5R)-6-(HYDROXYAMINO)-2-(HYDROXYMETHYL)-2,3,4,5-TETRAHYDROPYRIDINE-3,4,5-TRIOL'>GOX</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Alpha-amylase Alpha-amylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.1 3.2.1.1] | |||
|GENE= AMY2A ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | |||
}} | |||
'''In situ extension as an approach for identifying novel alpha-amylase inhibitors, structure containing D-gluconhydroximo-1,5-lactam''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1U2Y is a [ | 1U2Y is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1U2Y OCA]. | ||
==Reference== | ==Reference== | ||
In situ extension as an approach for identifying novel alpha-amylase inhibitors., Numao S, Damager I, Li C, Wrodnigg TM, Begum A, Overall CM, Brayer GD, Withers SG, J Biol Chem. 2004 Nov 12;279(46):48282-91. Epub 2004 Aug 10. PMID:[http:// | In situ extension as an approach for identifying novel alpha-amylase inhibitors., Numao S, Damager I, Li C, Wrodnigg TM, Begum A, Overall CM, Brayer GD, Withers SG, J Biol Chem. 2004 Nov 12;279(46):48282-91. Epub 2004 Aug 10. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15304511 15304511] | ||
[[Category: Alpha-amylase]] | [[Category: Alpha-amylase]] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
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[[Category: inhibitor]] | [[Category: inhibitor]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 14:26:45 2008'' | ||
Revision as of 12:26, 20 March 2008
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| 1u2y, resolution 1.95Å | |||||||||||||
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| Ligands: | NAG, CA, CL and GOX | ||||||||||||
| Gene: | AMY2A (Homo sapiens) | ||||||||||||
| Activity: | Alpha-amylase, with EC number 3.2.1.1 | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
In situ extension as an approach for identifying novel alpha-amylase inhibitors, structure containing D-gluconhydroximo-1,5-lactam
Overview
A new approach for the discovery and subsequent structural elucidation of oligosaccharide-based inhibitors of alpha-amylases based upon autoglucosylation of known alpha-glucosidase inhibitors is presented. This concept, highly analogous to what is hypothesized to occur with acarbose, is demonstrated with the known alpha-glucosidase inhibitor, d-gluconohydroximino-1,5-lactam. This was transformed from an inhibitor of human pancreatic alpha-amylase with a K(i) value of 18 mm to a trisaccharide analogue with a K(i) value of 25 mum. The three-dimensional structure of this complex was determined by x-ray crystallography and represents the first such structure determined with this class of inhibitors in any alpha-glycosidase. This approach to the discovery and structural analysis of amylase inhibitors should be generally applicable to other endoglucosidases and readily adaptable to a high throughput format.
About this Structure
1U2Y is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
In situ extension as an approach for identifying novel alpha-amylase inhibitors., Numao S, Damager I, Li C, Wrodnigg TM, Begum A, Overall CM, Brayer GD, Withers SG, J Biol Chem. 2004 Nov 12;279(46):48282-91. Epub 2004 Aug 10. PMID:15304511
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