Related ArticlesNMR structure of an anti-gp120 antibody complex with a V3 peptide reveals a surface important for co-receptor binding.
Structure. 2000 Apr 15;8(4):385-95
Authors: Tugarinov V, Zvi A, Levy R, Hayek Y, Matsushita S, Anglister J
BACKGROUND: The protein 0.5beta is a potent strain-specific human immunodeficiency virus type 1 (HIV-1) neutralizing antibody raised against the entire envelope glycoprotein (gp120) of the HIV-1(IIIB) strain. The epitope recognized by 0.5beta is located within the third hypervariable region (V3) of gp120. Recently, several HIV-1 V3 residues involved in co-receptor utilization and selection were identified. RESULTS: Virtually complete sidechain assignment of the variable fragment (Fv) of 0.5beta in complex with the V3(IIIB) peptide P1053 (RKSIRIQRGPGRAFVTIG, in single-letter amino acid code) was accomplished and the combining site structure of 0.5beta Fv complexed with P1053 was solved using multidimensional nuclear magnetic resonance (NMR). Five of the six complementarity determining regions (CDRs) of the antibody adopt standard canonical conformations, whereas CDR3 of the heavy chain assumes an unexpected fold. The epitope recognized by 0.5beta encompasses 14 of the 18 P1053 residues. The bound peptide assumes a beta-hairpin conformation with a QRGPGR loop located at the very center of the binding pocket. The Fv and peptide surface areas buried upon binding are 601 A and 743 A(2), respectively, in the 0.5beta Fv-P1053 mean structure. The surface of P1053 interacting with the antibody is more extensive and the V3 peptide orientation in the binding site is significantly different compared with those derived from the crystal structures of a V3 peptide of the HIV-1 MN strain (V3(MN)) complexed to three different anti-peptide antibodies. CONCLUSIONS: The surface of P1053 that is in contact with the anti-protein antibody 0.5beta is likely to correspond to a solvent-exposed region in the native gp120 molecule. Some residues of this region of gp120 are involved in co-receptor binding, and in discrimination between different chemokine receptors utilized by the protein. Several highly variable residues in the V3 loop limit the specificity of the 0.5beta antibody, helping the virus to escape from the immune system. The highly conserved GPG sequence might have a role in maintaining the beta-hairpin conformation of the V3 loop despite insertions, deletions and mutations in the flanking regions.
Structure and lipid interactions of an anti-inflammatory and anti-atherogenic 10-residue class G(*) apolipoprotein J peptide using solution NMR.
Structure and lipid interactions of an anti-inflammatory and anti-atherogenic 10-residue class G(*) apolipoprotein J peptide using solution NMR.
Structure and lipid interactions of an anti-inflammatory and anti-atherogenic 10-residue class G(*) apolipoprotein J peptide using solution NMR.
Biochim Biophys Acta. 2011 Jan;1808(1):498-507
Authors: Mishra VK, Palgunachari MN, Hudson JS, Shin R, Keenum TD, Krishna NR, Anantharamaiah GM
The surprising observation that a 10-residue class G(?) peptide from apolipoprotein J, apoJ, possesses...
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03-08-2011 01:40 PM
A Solution NMR Study of the Interactions of Oligomannosides and the Anti-HIV-1 2G12 Antibody Reveals Distinct Binding Modes for Branched Ligands*
A Solution NMR Study of the Interactions of Oligomannosides and the Anti-HIV-1 2G12 Antibody Reveals Distinct Binding Modes for Branched Ligands*
A Solution NMR Study of the Interactions of Oligomannosides and the Anti-HIV-1 2G12 Antibody Reveals Distinct Binding Modes for Branched Ligands*
Chemistry. 2011 Feb 1;17(5):1547-1560
Authors: Enríquez-Navas PM, Marradi M, Padro D, Angulo J, Penadés S
The structural and affinity details of the interactions of synthetic oligomannosides, linear (di-, tri-, and tetra-) and branched (penta- and hepta-),...
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01-27-2011 02:52 PM
A Solution NMR Study of the Interactions of Oligomannosides and the Anti-HIV-1 2G12 Antibody Reveals Distinct Binding Modes for Branched Ligands*
A Solution NMR Study of the Interactions of Oligomannosides and the Anti-HIV-1 2G12 Antibody Reveals Distinct Binding Modes for Branched Ligands*
A Solution NMR Study of the Interactions of Oligomannosides and the Anti-HIV-1 2G12 Antibody Reveals Distinct Binding Modes for Branched Ligands*
Chemistry. 2011 Jan 5;
Authors: Enríquez-Navas PM, Marradi M, Padro D, Angulo J, Penadés S
The structural and affinity details of the interactions of synthetic oligomannosides, linear (di-, tri-, and tetra-) and branched (penta- and hepta-), with the broadly...
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01-06-2011 11:21 AM
[NMR paper] Epitope mapping of gibberellin to the anti-gibberellin A(4) monoclonal antibody by sa
Epitope mapping of gibberellin to the anti-gibberellin A(4) monoclonal antibody by saturation transfer difference NMR spectroscopy.
Related Articles Epitope mapping of gibberellin to the anti-gibberellin A(4) monoclonal antibody by saturation transfer difference NMR spectroscopy.
Biochem Biophys Res Commun. 2003 Aug 1;307(3):498-502
Authors: Murata T, Hemmi H, Nakajima M, Yoshida M, Yamaguchi I
Saturation transfer difference (STD) NMR spectroscopy is a promising tool for rapid screening, identifying ligands that interact with a target protein,...
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11-24-2010 09:16 PM
[NMR paper] The NMR structure of the 38 kDa U1A protein - PIE RNA complex reveals the basis of co
The NMR structure of the 38 kDa U1A protein - PIE RNA complex reveals the basis of cooperativity in regulation of polyadenylation by human U1A protein.
Related Articles The NMR structure of the 38 kDa U1A protein - PIE RNA complex reveals the basis of cooperativity in regulation of polyadenylation by human U1A protein.
Nat Struct Biol. 2000 Apr;7(4):329-35
Authors: Varani L, Gunderson SI, Mattaj IW, Kay LE, Neuhaus D, Varani G
The status of the poly(A) tail at the 3'-end of mRNAs controls the expression of numerous genes in response to...
[NMR paper] NMR-derived model for a peptide-antibody complex.
NMR-derived model for a peptide-antibody complex.
Related Articles NMR-derived model for a peptide-antibody complex.
Biochemistry. 1990 Oct 30;29(43):10032-41
Authors: Zilber B, Scherf T, Levitt M, Anglister J
The TE34 monoclonal antibody against cholera toxin peptide 3 (CTP3; VEVPGSQHIDSQKKA) was sequenced and investigated by two-dimensional transferred NOE difference spectroscopy and molecular modeling. The VH sequence of TE34, which does not bind cholera toxin, shares remarkable homology to that of TE32 and TE33, which are both anti-CTP3...