1op2
From Proteopedia
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| - | [[Image:1op2.gif|left|200px]] | + | [[Image:1op2.gif|left|200px]] |
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| - | '''Crystal Structure of AaV-SP-II, a Glycosylated Snake Venom Serine Proteinase from Agkistrodon acutus''' | + | {{Structure |
| + | |PDB= 1op2 |SIZE=350|CAPTION= <scene name='initialview01'>1op2</scene>, resolution 2.10Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene> and <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''Crystal Structure of AaV-SP-II, a Glycosylated Snake Venom Serine Proteinase from Agkistrodon acutus''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1OP2 is a [ | + | 1OP2 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Deinagkistrodon_acutus Deinagkistrodon acutus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1OP2 OCA]. |
==Reference== | ==Reference== | ||
| - | Crystal structures and amidolytic activities of two glycosylated snake venom serine proteinases., Zhu Z, Liang Z, Zhang T, Zhu Z, Xu W, Teng M, Niu L, J Biol Chem. 2005 Mar 18;280(11):10524-9. Epub 2005 Jan 4. PMID:[http:// | + | Crystal structures and amidolytic activities of two glycosylated snake venom serine proteinases., Zhu Z, Liang Z, Zhang T, Zhu Z, Xu W, Teng M, Niu L, J Biol Chem. 2005 Mar 18;280(11):10524-9. Epub 2005 Jan 4. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15632114 15632114] |
[[Category: Deinagkistrodon acutus]] | [[Category: Deinagkistrodon acutus]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: snake venom]] | [[Category: snake venom]] | ||
| - | ''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 13:13:46 2008'' |
Revision as of 11:13, 20 March 2008
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| , resolution 2.10Å | |||||||
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| Ligands: | and | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of AaV-SP-II, a Glycosylated Snake Venom Serine Proteinase from Agkistrodon acutus
Overview
We deduced that Agkistrodon actus venom serine proteinases I and II, previously isolated from the venom of A. acutus (Zhu, Z., Gong, P., Teng, M., and Niu, L. (2003) Acta Crystallogr. Sect. D Biol. Crystallogr. 59, 547-550), are encoded by two almost identical genes, with only the single substitution Asp for Asn at residue 62. Amidolytic assays indicated that they possess slightly different enzymatic properties. Crystal structures of A. actus venom serine proteinases I and II were determined at resolution of 2.0 and 2.1 A with the identification of trisaccharide (NAG(301)-FUC(302)-NAG(303)) and monosaccharide (NAG(301)) residues in them, respectively. The substrate binding sites S3 of the two proteinases appear much shallower than that of Trimeresurus stejnegeri venom plasminogen activator despite the overall structural similarity. Based on structural analysis, we showed that these Asn(35)-linked oligosaccharides collide spatially with some inhibitors, such as soybean trypsin inhibitor, and would therefore hinder their inhibitory binding. Difference of the carbohydrates in both the proteinases might also lead to their altered catalytic activities.
About this Structure
1OP2 is a Single protein structure of sequence from Deinagkistrodon acutus. Full crystallographic information is available from OCA.
Reference
Crystal structures and amidolytic activities of two glycosylated snake venom serine proteinases., Zhu Z, Liang Z, Zhang T, Zhu Z, Xu W, Teng M, Niu L, J Biol Chem. 2005 Mar 18;280(11):10524-9. Epub 2005 Jan 4. PMID:15632114
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