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Crystallization and Preliminary X-Ray Crystallographic Analysis of Human Plasma Platelet Activating Factor Acetylhydrolase

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The plasma form of the human enzyme platelet activating factor acetylhydrolase (PAF-AH) has been crystallized, and X-ray diffraction data were collected at a synchrotron source to a resolution of 1.47 Å. The crystals belong to space group C2, with unit cell parameters of a = 116.18, b = 83.06, c = 96.71 Å, and β = 115.09° and two molecules in the asymmetric unit. PAF-AH functions as a general anti-inflammatory scavenger by reducing the levels of the signaling molecule PAF. Additionally, the LDL bound enzyme has been linked to atherosclerosis due to its hydrolytic activities of pro-inflammatory agents, such as sn-2 oxidatively fragmented phospholipids.

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Keywords: Lp-PLA2; PAF-AH; crystallization; group VIIA PLA2; lipoprotein associated phospholipase A2

Document Type: Research Article

Publication date: 2009-01-01

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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