1mam

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{{STRUCTURE_1mam| PDB=1mam | SCENE= }}
{{STRUCTURE_1mam| PDB=1mam | SCENE= }}
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'''CRYSTAL STRUCTURE TO 2.45 A RESOLUTION OF A MONOCLONAL FAB SPECIFIC FOR THE BRUCELLA A CELL WALL POLYSACCHARIDE ANTIGEN'''
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===CRYSTAL STRUCTURE TO 2.45 A RESOLUTION OF A MONOCLONAL FAB SPECIFIC FOR THE BRUCELLA A CELL WALL POLYSACCHARIDE ANTIGEN===
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==Overview==
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The atomic structure of an antibody antigen-binding fragment (Fab) at 2.45 A resolution shows that polysaccharide antigen conformation and Fab structure dictated by combinatorial diversity and domain association are responsible for the fine specificity of the Brucella-specific antibody, YsT9.1. It discriminates the Brucella abortus A antigen from the nearly identical Brucella melitensis M antigen by forming a groove-type binding site, lined with tyrosine residues, that accommodates the rodlike A antigen but excludes the kinked structure of the M antigen, as envisioned by a model of the antigen built into the combining site. The variable-heavy (VH) and variable-light (VL) domains are derived from genes closely related to two used in previously solved structures, M603 and R19.9, respectively. These genes combine in YsT9.1 to form an antibody of totally different specificity. Comparison of this X-ray structure with a previously built model of the YsT9.1 combining site based on these homologies highlights the importance of VL:VH association as a determinant of specificity and suggests that small changes at the VL:VH interface, unanticipated in modeling, may cause significant modulation of binding-site properties.
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(as it appears on PubMed at http://www.pubmed.gov), where 8358294 is the PubMed ID number.
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{{ABSTRACT_PUBMED_8358294}}
==About this Structure==
==About this Structure==
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[[Category: Rose, D R.]]
[[Category: Rose, D R.]]
[[Category: Immunoglobulin]]
[[Category: Immunoglobulin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 00:49:53 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 23:34:16 2008''

Revision as of 20:34, 2 July 2008

Template:STRUCTURE 1mam

CRYSTAL STRUCTURE TO 2.45 A RESOLUTION OF A MONOCLONAL FAB SPECIFIC FOR THE BRUCELLA A CELL WALL POLYSACCHARIDE ANTIGEN

Template:ABSTRACT PUBMED 8358294

About this Structure

1MAM is a Single protein structure. Full crystallographic information is available from OCA.

Reference

Crystal structure to 2.45 A resolution of a monoclonal Fab specific for the Brucella A cell wall polysaccharide antigen., Rose DR, Przybylska M, To RJ, Kayden CS, Oomen RP, Vorberg E, Young NM, Bundle DR, Protein Sci. 1993 Jul;2(7):1106-13. PMID:8358294

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