Farnesyl-protein transferase (FPTase) catalyzes the posttranslational farnesylation of the cysteine residue located in the carboxyl-terminal tetrapeptide of the Ras oncoprotein. Prenylation of this residue is essential for the membrane association and cell-transforming activities of ras. Inhibitors of FPTase have been demonstrated to inhibit ras-dependent cell transformation and thus represent a potential therapeutic strategy for the treatment of human cancers. The FPTase-bound conformation of a tetrapeptide inhibitor, CVWM, and a novel pseudopeptide inhibitor, L-739,787, have been determined by NMR spectroscopy. Distance constraints were derived from two-dimensional transferred nuclear Overhauser effect experiments. Ligand competition experiments identified the NOEs that originate from the active-site conformation. Structures were calculated with the combination of distance geometry and restrained energy minimization. Both peptide backbones are shown to adopt nonideal reverse-turn conformations most closely approximating a type III beta-turn. These results provide a basis for understanding the spatial arrangements necessary for inhibitor binding and selectivity and may aid in the design of therapeutic agents.
Transferred NOESY NMR studies of biotin mimetic peptide (FSHPQNT) bound to streptavidin: A structural model for studies of peptide-protein interactions.
Transferred NOESY NMR studies of biotin mimetic peptide (FSHPQNT) bound to streptavidin: A structural model for studies of peptide-protein interactions.
Transferred NOESY NMR studies of biotin mimetic peptide (FSHPQNT) bound to streptavidin: A structural model for studies of peptide-protein interactions.
Chem Biol Drug Des. 2011 Feb 5;
Authors: Gizachew D, Dratz E
Protein-protein interactions control signaling, specific adhesion and many other biological functions. The three dimensional structures of the interfaces and bound ligand can be...
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02-08-2011 06:28 PM
[NMR paper] NMR studies of the phosphorylation motif of the HIV-1 protein Vpu bound to the F-box
NMR studies of the phosphorylation motif of the HIV-1 protein Vpu bound to the F-box protein beta-TrCP.
Related Articles NMR studies of the phosphorylation motif of the HIV-1 protein Vpu bound to the F-box protein beta-TrCP.
Biochemistry. 2003 Dec 23;42(50):14741-51
Authors: Coadou G, Gharbi-Benarous J, Megy S, Bertho G, Evrard-Todeschi N, Segeral E, Benarous R, Girault JP
A protein-protein association regulated by phosphorylation of serine is examined by NMR studies. Degradation of the HIV receptor CD4 by the proteasome, mediated by the HIV-1...
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11-24-2010 09:16 PM
[NMR paper] 31P-CP-MAS NMR studies on TPP+ bound to the ion-coupled multidrug transport protein E
31P-CP-MAS NMR studies on TPP+ bound to the ion-coupled multidrug transport protein EmrE.
Related Articles 31P-CP-MAS NMR studies on TPP+ bound to the ion-coupled multidrug transport protein EmrE.
FEBS Lett. 2000 Sep 1;480(2-3):127-31
Authors: Glaubitz C, Gröger A, Gottschalk K, Spooner P, Watts A, Schuldiner S, Kessler H
The binding of tetraphenylphosphonium (TPP+) to EmrE, a membrane-bound, 110 residue Escherichia coli multidrug transport protein, has been observed by 31P cross-polarisation-magic-angle spinning nuclear magnetic resonance...
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11-19-2010 08:29 PM
[NMR paper] NMR structural studies of glutathione S-transferase.
NMR structural studies of glutathione S-transferase.
Related Articles NMR structural studies of glutathione S-transferase.
Cell Mol Life Sci. 1998 Apr;54(4):359-62
Authors: Lian LY
The use of nuclear magnetic resonance (NMR) spectroscopy for the structure determination of small proteins is now widely recognized; what is less frequently reported is the application of NMR techniques for high-resolution studies of large proteins (M(r) larger than 30 kD). We demonstrate here how an integrated approach, using heteronuclear NMR and X-ray...
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11-17-2010 11:06 PM
[NMR paper] NMR studies of internal dynamics of serine proteinase protein inhibitors: Binding reg
NMR studies of internal dynamics of serine proteinase protein inhibitors: Binding region mobilities of intact and reactive-site hydrolyzed Cucurbita maxima trypsin inhibitor (CMTI)-III of the squash family and comparison with those of counterparts of CMTI-V of the potato I family.
Related Articles NMR studies of internal dynamics of serine proteinase protein inhibitors: Binding region mobilities of intact and reactive-site hydrolyzed Cucurbita maxima trypsin inhibitor (CMTI)-III of the squash family and comparison with those of counterparts of CMTI-V of the potato I family.
...
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[NMR paper] NMR studies of an FK-506 analog, [U-13C]ascomycin, bound to FK-506-binding protein.
NMR studies of an FK-506 analog, ascomycin, bound to FK-506-binding protein.
Related Articles NMR studies of an FK-506 analog, ascomycin, bound to FK-506-binding protein.
J Med Chem. 1992 Jun 26;35(13):2467-73
Authors: Petros AM, Gemmecker G, Neri P, Olejniczak ET, Nettesheim D, Xu RX, Gubbins EG, Smith H, Fesik SW
Multidimensional, heteronuclear NMR methods were used to determine the complete 1H and 13C resonance assignments for ascomycin bound to recombinant FKBP, including stereospecific assignment of all 22 methylene protons. The...
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08-21-2010 11:41 PM
[NMR paper] NMR studies of [U-13C]cyclosporin A bound to cyclophilin: bound conformation and port
NMR studies of cyclosporin A bound to cyclophilin: bound conformation and portions of cyclosporin involved in binding.
Related Articles NMR studies of cyclosporin A bound to cyclophilin: bound conformation and portions of cyclosporin involved in binding.
Biochemistry. 1991 Jul 2;30(26):6574-83
Authors: Fesik SW, Gampe RT, Eaton HL, Gemmecker G, Olejniczak ET, Neri P, Holzman TF, Egan DA, Edalji R, Simmer R
Cyclosporin A (CsA), a potent immunosuppressant, is known to bind with high specificity to cyclophilin (CyP), a 17.7 kDa protein with...
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08-21-2010 11:12 PM
[NMR paper] NMR studies of [U-13C]cyclosporin A bound to cyclophilin: bound conformation and port
NMR studies of cyclosporin A bound to cyclophilin: bound conformation and portions of cyclosporin involved in binding.
Related Articles NMR studies of cyclosporin A bound to cyclophilin: bound conformation and portions of cyclosporin involved in binding.
Biochemistry. 1991 Jul 2;30(26):6574-83
Authors: Fesik SW, Gampe RT, Eaton HL, Gemmecker G, Olejniczak ET, Neri P, Holzman TF, Egan DA, Edalji R, Simmer R
Cyclosporin A (CsA), a potent immunosuppressant, is known to bind with high specificity to cyclophilin (CyP), a 17.7 kDa protein with...
NMR studies of novel inhibitors bound to farnesyl-protein transferase.
Linear Mode
