1q2o
From Proteopedia
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|PDB= 1q2o |SIZE=350|CAPTION= <scene name='initialview01'>1q2o</scene>, resolution 1.74Å | |PDB= 1q2o |SIZE=350|CAPTION= <scene name='initialview01'>1q2o</scene>, resolution 1.74Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CAC:CACODYLATE+ION'>CAC</scene>, <scene name='pdbligand=DP1:L-N(OMEGA)-NITROARGININE-2,4-L-DIAMINOBUTYRIC+AMIDE'>DP1</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=H4B:5,6,7,8-TETRAHYDROBIOPTERIN'>H4B</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Nitric-oxide_synthase Nitric-oxide synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.13.39 1.14.13.39] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Nitric-oxide_synthase Nitric-oxide synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.13.39 1.14.13.39] </span> |
|GENE= NOS3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9913 Bos taurus]) | |GENE= NOS3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9913 Bos taurus]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1p6l|1P6L]], [[1p6m|1P6M]], [[1p6n|1P6N]], [[1p6h|1P6H]], [[1p6i|1P6I]], [[1p6j|1P6J]], [[1p6k|1P6K]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1q2o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q2o OCA], [http://www.ebi.ac.uk/pdbsum/1q2o PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1q2o RCSB]</span> | ||
}} | }} | ||
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[[Category: Silverman, R B.]] | [[Category: Silverman, R B.]] | ||
[[Category: Yang, W.]] | [[Category: Yang, W.]] | ||
| - | [[Category: ACT]] | ||
| - | [[Category: CAC]] | ||
| - | [[Category: DP1]] | ||
| - | [[Category: GOL]] | ||
| - | [[Category: H4B]] | ||
| - | [[Category: HEM]] | ||
| - | [[Category: ZN]] | ||
[[Category: endothelial nitric oxide synthase]] | [[Category: endothelial nitric oxide synthase]] | ||
[[Category: eno]] | [[Category: eno]] | ||
| - | [[Category: heme protein]] | + | [[Category: heme protein,]] |
[[Category: nos iii]] | [[Category: nos iii]] | ||
[[Category: oxidoreductase]] | [[Category: oxidoreductase]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:07:58 2008'' |
Revision as of 20:08, 30 March 2008
| |||||||
| , resolution 1.74Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , , , , , | ||||||
| Gene: | NOS3 (Bos taurus) | ||||||
| Activity: | Nitric-oxide synthase, with EC number 1.14.13.39 | ||||||
| Related: | 1P6L, 1P6M, 1P6N, 1P6H, 1P6I, 1P6J, 1P6K
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Bovine endothelial nitric oxide synthase N368D mutant heme domain dimer with L-N(omega)-nitroarginine-2,4-L-diaminobutyramide bound
Overview
Three nitric oxide synthase (NOS) isoforms, eNOS, nNOS and iNOS, generate nitric oxide (NO) crucial to the cardiovascular, nervous and host defense systems, respectively. Development of isoform-selective NOS inhibitors is of considerable therapeutic importance. Crystal structures of nNOS-selective dipeptide inhibitors in complex with both nNOS and eNOS were solved and the inhibitors were found to adopt a curled conformation in nNOS but an extended conformation in eNOS. We hypothesized that a single-residue difference in the active site, Asp597 (nNOS) versus Asn368 (eNOS), is responsible for the favored binding in nNOS. In the D597N nNOS mutant crystal structure, a bound inhibitor switches to the extended conformation and its inhibition of nNOS decreases >200-fold. Therefore, a single-residue difference is responsible for more than two orders of magnitude selectivity in inhibition of nNOS over eNOS by L-N(omega)-nitroarginine-containing dipeptide inhibitors.
About this Structure
1Q2O is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.
Reference
Structural basis for dipeptide amide isoform-selective inhibition of neuronal nitric oxide synthase., Flinspach ML, Li H, Jamal J, Yang W, Huang H, Hah JM, Gomez-Vidal JA, Litzinger EA, Silverman RB, Poulos TL, Nat Struct Mol Biol. 2004 Jan;11(1):54-9. Epub 2003 Dec 29. PMID:14718923
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