1cqe | pdb_00001cqe
PROSTAGLANDIN H2 SYNTHASE-1 COMPLEX WITH FLURBIPROFEN
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| 1cqe, resolution 3.1Å | |||||||||||||
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| Sites: | COA, COB, POA and POB | ||||||||||||
| Ligands: | BOG, FLP, HEM, NAG | ||||||||||||
| Activity: | Prostaglandin-endoperoxide synthase, with EC number 1.14.99.1 | ||||||||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Overview
The three-dimensional structure of prostaglandin H2 synthase-1, an integral membrane protein, has been determined at 3.5 A resolution by X-ray crystallography. This bifunctional enzyme comprises three independent folding units: an epidermal growth factor domain, a membrane-binding motif and an enzymatic domain. Two adjacent but spatially distinct active sites were found for its haem-dependent peroxidase and cyclooxygenase activities. The cyclooxygenase active site is created by a long, hydrophobic channel that is the site of non-steroidal anti-inflammatory drug binding. The conformation of the membrane-binding motif strongly suggests that the enzyme integrates into only one leaflet of the lipid bilayer and is thus a monotopic membrane protein.
About this Structure
1CQE is a Single protein structure of sequence from Ovis aries. Full crystallographic information is available from OCA.
Reference
The X-ray crystal structure of the membrane protein prostaglandin H2 synthase-1., Picot D, Loll PJ, Garavito RM, Nature. 1994 Jan 20;367(6460):243-9. PMID:8121489
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