Structural highlights
9nse is a 2 chain structure with sequence from Bos taurus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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| Ligands: | , , , , , , |
| Activity: | Nitric-oxide synthase, with EC number 1.14.13.39 |
| Resources: | FirstGlance, OCA, RCSB, PDBsum |
Function
[NOS3_BOVIN] Produces nitric oxide (NO) which is implicated in vascular smooth muscle relaxation through a cGMP-mediated signal transduction pathway. NO mediates vascular endothelial growth factor (VEGF)-induced angiogenesis in coronary vessels and promotes blood clotting through the activation of platelets.
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
Analyzing the active site topology and plasticity of nitric oxide synthase (NOS) and understanding enzyme-drug interactions are crucial for the development of potent, isoform-selective NOS inhibitors. A small hydrophobic pocket in the active site is identified in the bovine eNOS heme domain structures complexed with potent isothiourea inhibitors: seleno analogue of S-ethyl-isothiourea, S-isopropyl-isothiourea, and 2-aminothiazoline, respectively. These structures reveal the importance of nonpolar van der Waals contacts in addition to the well-known hydrogen bonding interactions between inhibitor and enzyme. The scaffold of a potent NOS inhibitor should be capable of donating hydrogen bonds to as well as making nonpolar contacts with amino acids in the NOS active site.
Mapping the active site polarity in structures of endothelial nitric oxide synthase heme domain complexed with isothioureas.,Li H, Raman CS, Martasek P, Kral V, Masters BS, Poulos TL J Inorg Biochem. 2000 Aug 31;81(3):133-9. PMID:11051558[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Li H, Raman CS, Martasek P, Kral V, Masters BS, Poulos TL. Mapping the active site polarity in structures of endothelial nitric oxide synthase heme domain complexed with isothioureas. J Inorg Biochem. 2000 Aug 31;81(3):133-9. PMID:11051558
