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1bln
From Proteopedia
Revision as of 09:39, 13 August 2014 by OCA (Talk | contribs)
1bln is a 4 chain structure with sequence from Mus musculus. The March 2010 RCSB PDB Molecule of the Month feature on P-glycoprotein by David Goodsell is 10.2210/rcsb_pdb/mom_2010_3. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Monoclonal antibody MRK-16 recognizes a discontinuous extracellular epitope on the multidrug resistance-associated ATP-binding cassette transporter, P-glycoprotein. The atomic basis for specificity of this antibody is of interest because of its potential as a modulator of P-glycoprotein activity. The crystal structure of Fab MRK-16 is reported to a resolution of 2.8 A. A structure for a portion of the epitope was derived by comparison to regions of solved structures with similar primary sequence. This has permitted a proposal for the mode of binding of the peptide epitope to the antibody, in which the peptide makes specific contacts with complementarity-determining regions H1, H2, and H3 from the heavy chain and L3 from the light chain. These interactions are consistent with epitope mapping studies and with the observation that MRK-16 is specific for human class I P-glycoprotein. This result identifies side chains in MRK-16 that would be amenable to alteration in antibody engineering experiments to derive improved multidrug resistance inhibitors for clinical use during chemotherapy. In particular, Arg-H97 contacts both Glu-746 and Asp-744 of the peptide, Arg-L96 contacts Asp-743, and Thr-H33 interacts with Thr-747. All of these epitope residues were implicated in mediating specificity by epitope mapping studies.
Mode of binding of anti-P-glycoprotein antibody MRK-16 to its antigen. A crystallographic and molecular modeling study.,Vasudevan S, Tsuruo T, Rose DR J Biol Chem. 1998 Sep 25;273(39):25413-9. PMID:9738009[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
↑ Vasudevan S, Tsuruo T, Rose DR. Mode of binding of anti-P-glycoprotein antibody MRK-16 to its antigen. A crystallographic and molecular modeling study. J Biol Chem. 1998 Sep 25;273(39):25413-9. PMID:9738009
