1pfp

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|PDB= 1pfp |SIZE=350|CAPTION= <scene name='initialview01'>1pfp</scene>, resolution 2.30&Aring;
|PDB= 1pfp |SIZE=350|CAPTION= <scene name='initialview01'>1pfp</scene>, resolution 2.30&Aring;
|SITE=
|SITE=
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|LIGAND=
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|LIGAND= <scene name='pdbligand=CSE:SELENOCYSTEINE'>CSE</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>
|ACTIVITY=
|ACTIVITY=
|GENE= NPG3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9823 Sus scrofa])
|GENE= NPG3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9823 Sus scrofa])
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|DOMAIN=
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|RELATEDENTRY=[[1kwi|1KWI]]
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1pfp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pfp OCA], [http://www.ebi.ac.uk/pdbsum/1pfp PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1pfp RCSB]</span>
}}
}}
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[[Category: semet]]
[[Category: semet]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 13:23:46 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:59:00 2008''

Revision as of 19:59, 30 March 2008

Image:1pfp.jpg


PDB ID 1pfp

Drag the structure with the mouse to rotate
, resolution 2.30Å
Ligands: ,
Gene: NPG3 (Sus scrofa)
Related: 1KWI


Resources: FirstGlance, OCA, PDBsum, RCSB
Coordinates: save as pdb, mmCIF, xml



CATHELIN-LIKE MOTIF OF PROTEGRIN-3


Overview

A protocol for the quantitative incorporation of both selenomethionine and selenocysteine into recombinant proteins overexpressed in Escherichia coli is described. This methodology is based on the use of a suitable cysteine auxotrophic strain and a minimal medium supplemented with selenium-labeled methionine and cysteine. The proteins chosen for these studies are the cathelin-like motif of protegrin-3 and a nucleoside-diphosphate kinase. Analysis of the purified proteins by electrospray mass spectrometry and X-ray crystallography revealed that both cysteine and methionine residues were isomorphously replaced by selenocysteine and selenomethionine. Moreover, selenocysteines allowed the formation of unstrained and stable diselenide bridges in place of the canonical disulfide bonds. In addition, we showed that NDP kinase contains a selenocysteine adduct on Cys122. This novel selenium double-labeling method is proposed as a general approach to increase the efficiency of the MAD technique used for phase determination in protein crystallography.

About this Structure

1PFP is a Single protein structure of sequence from Sus scrofa. Full crystallographic information is available from OCA.

Reference

Selenomethionine and selenocysteine double labeling strategy for crystallographic phasing., Strub MP, Hoh F, Sanchez JF, Strub JM, Bock A, Aumelas A, Dumas C, Structure. 2003 Nov;11(11):1359-67. PMID:14604526

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