2c11
From Proteopedia
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| , resolution 2.9Å | |||||||
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| Sites: | |||||||
| Ligands: | , , , , , , , , | ||||||
| Activity: | Amine oxidase (copper-containing), with EC number 1.4.3.6 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE OF THE 2-HYDRAZINOPYRIDINE OF SEMICARBAZIDE-SENSITIVE AMINE OXIDASE
Overview
Semicarbazide-sensitive amine oxidase (SSAO) belongs to a ubiquitous family of copper-containing amine oxidases (CuAOs). SSAO is also known as vascular adhesion protein-1 (VAP-1) and has been identified as one of the adhesion molecules involved in the leukocyte-extravasation process. The structure of a truncated soluble form of human SSAO has been solved and refined to 2.5 A. As expected, SSAO is a homodimer with a fold typical of the CuAO family. The topaquinone (TPQ) cofactor and a copper ion characteristic of CuAOs are present in the active site, with the TPQ in the active ;off-copper' conformation. The structure reveals that a leucine residue (Leu469) located adjacent to the active site could function as a gate controlling its accessibility. An RGD motif is displayed on the surface, where it could be involved in integrin binding and possibly play a role in the shedding of SSAO from the membrane. Carbohydrate moieties are observed at five of six potential N-glycosylation sites. Carbohydrates attached to Asn232 flank the active-site entrance and might influence substrate specificity. The structure of an adduct of SSAO and the irreversible inhibitor 2-hydrazinopyridine has been solved and refined to 2.9 A resolution. Together, these structures will aid efforts to identify natural substrates, provide valuable information for the design of specific inhibitors and direct further studies.
About this Structure
2C11 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structure of human semicarbazide-sensitive amine oxidase/vascular adhesion protein-1., Jakobsson E, Nilsson J, Ogg D, Kleywegt GJ, Acta Crystallogr D Biol Crystallogr. 2005 Nov;61(Pt 11):1550-62. Epub 2005, Oct 19. PMID:16239734
Page seeded by OCA on Mon Mar 31 02:14:42 2008
Categories: Amine oxidase (copper-containing) | Homo sapiens | Single protein | Jakobsson, E. | Kleywegt, G J. | 2-hydroxypyridine | Adhesion protein-1 | Cell adhesion | Copper | Glycoprotein | Metal-binding | Oxidoreductase | Polymorphism | Semicarbazide-sensitive amine oxidase | Signal-anchor | Ssao | Tpq | Transmembrane | Vap-1 | Vascular
