1cu4

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{{STRUCTURE_1cu4| PDB=1cu4 | SCENE= }}
{{STRUCTURE_1cu4| PDB=1cu4 | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE ANTI-PRION FAB 3F4 IN COMPLEX WITH ITS PEPTIDE EPITOPE'''
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===CRYSTAL STRUCTURE OF THE ANTI-PRION FAB 3F4 IN COMPLEX WITH ITS PEPTIDE EPITOPE===
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==Overview==
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The X-ray crystallographic structures of the anti-Syrian hamster prion protein (SHaPrP) monoclonal Fab 3F4 alone, as well as the complex with its cognate peptide epitope (SHaPrP 104-113), have been determined to atomic resolution. The conformation of the decapeptide is an Omega-loop. There are substantial alterations in the antibody combining region upon epitope binding. The peptide binds in a U-shaped groove on the Fab surface, with the two specificity determinants, Met109 and Met112, penetrating deeply into separate hydrophobic cavities formed by the heavy and light chain complementarity-determining regions. In addition to the numerous contacts between the Fab and the peptide, two intrapeptide hydrogen bonds are observed, perhaps indicating the structure bound to the Fab exists transiently in solution. This provides the first structural information on a portion of the PrP N-terminal region observed to be flexible in the NMR studies of SHPrP 90-231, SHaPrP 29-231 and mouse PrP 23-231. Antibody characterization of the antigenic surfaces of PrPC and PrPSc identifies this flexible region as a component of the conformational rearrangement that is an essential feature of prion disease.
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(as it appears on PubMed at http://www.pubmed.gov), where 10543972 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10543972}}
==About this Structure==
==About this Structure==
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[[Category: Williamson, R A.]]
[[Category: Williamson, R A.]]
[[Category: Immunoglobulin fold]]
[[Category: Immunoglobulin fold]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 13:06:48 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 21:22:23 2008''

Revision as of 18:22, 30 June 2008

Image:1cu4.png

Template:STRUCTURE 1cu4

CRYSTAL STRUCTURE OF THE ANTI-PRION FAB 3F4 IN COMPLEX WITH ITS PEPTIDE EPITOPE

Template:ABSTRACT PUBMED 10543972

About this Structure

Full crystallographic information is available from OCA.

Reference

Antibody binding defines a structure for an epitope that participates in the PrPC-->PrPSc conformational change., Kanyo ZF, Pan KM, Williamson RA, Burton DR, Prusiner SB, Fletterick RJ, Cohen FE, J Mol Biol. 1999 Nov 5;293(4):855-63. PMID:10543972

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