1pz4

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{{STRUCTURE_1pz4| PDB=1pz4 | SCENE= }}
{{STRUCTURE_1pz4| PDB=1pz4 | SCENE= }}
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'''The structural determination of an insect (mosquito) Sterol Carrier Protein-2 with a ligand bound C16 Fatty Acid at 1.35 A resolution'''
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===The structural determination of an insect (mosquito) Sterol Carrier Protein-2 with a ligand bound C16 Fatty Acid at 1.35 A resolution===
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==Overview==
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Yellow fever mosquito sterol carrier protein (SCP-2) is known to bind to cholesterol. We report here the three-dimensional structure of the complex of SCP-2 from Aedes aegypti with a C16 fatty acid to 1.35-A resolution. The protein fold is exceedingly similar to the human and rabbit proteins, which consist of a five-stranded beta-sheet that exhibits strand order 3-2-1-4-5 with an accompanying layer of four alpha-helices that cover the beta-sheet. A large cavity exists at the interface of the layer alpha-helices and the beta-sheet, which serves as the fatty acid binding site. The carboxylate moiety of the fatty acid is coordinated by a short loop that connects the first alpha-helix to the first beta-strand, whereas the acyl chain extends deep into the interior of the protein. Interestingly, the orientation of the fatty acid is opposite to the observed orientation for Triton X-100 in the SCP-2-like domain from the peroxisomal multifunctional enzyme (Haapalainen, A. M., van Aalten, D. M., Merilainen, G., Jalonen, J. E., Pirila, P., Wierenga, R. K., Hiltunen, J. K., and Glumoff, T. (2001) J. Mol. Biol. 313, 1127-1138). The present study suggests that the binding pocket in the SCP-2 family of proteins may exhibit conformational flexibility to allow coordination of a variety of lipids.
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{{ABSTRACT_PUBMED_12855689}}
==About this Structure==
==About this Structure==
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[[Category: Thoden, J B.]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 06:43:39 2008''

Revision as of 03:43, 29 July 2008

Image:1pz4.png

Template:STRUCTURE 1pz4

The structural determination of an insect (mosquito) Sterol Carrier Protein-2 with a ligand bound C16 Fatty Acid at 1.35 A resolution

Template:ABSTRACT PUBMED 12855689

About this Structure

1PZ4 is a Single protein structure of sequence from Aedes aegypti. Full crystallographic information is available from OCA.

Reference

The structural determination of an insect sterol carrier protein-2 with a ligand-bound C16 fatty acid at 1.35-A resolution., Dyer DH, Lovell S, Thoden JB, Holden HM, Rayment I, Lan Q, J Biol Chem. 2003 Oct 3;278(40):39085-91. Epub 2003 Jul 10. PMID:12855689

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