2iej

From Proteopedia

(Difference between revisions)

Revision as of 00:23, 12 September 2015

Human Protein Farnesyltransferase Complexed with Inhibitor Compound STN-48 And FPP Analog at 1.8A Resolution

Structural highlights

2iej is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , , ,
Gene:	FNTA (HUMAN), FNTB (HUMAN)
Activity:	Protein farnesyltransferase, with EC number 2.5.1.58
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[FNTA_HUMAN] Catalyzes the transfer of a farnesyl or geranyl-geranyl moiety from farnesyl or geranyl-geranyl pyrophosphate to a cysteine at the fourth position from the C-terminus of several proteins having the C-terminal sequence Cys-aliphatic-aliphatic-X. The alpha subunit is thought to participate in a stable complex with the substrate. The beta subunit binds the peptide substrate. Through RAC1 prenylation and activation may positively regulate neuromuscular junction development downstream of MUSK (By similarity). [FNTB_HUMAN] Catalyzes the transfer of a farnesyl moiety from farnesyl pyrophosphate to a cysteine at the fourth position from the C-terminus of several proteins. The beta subunit is responsible for peptide-binding.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The post-translational farnesylation of proteins serves to anchor a subset of intracellular proteins to membranes in eukaryotic organisms and also promotes protein-protein interactions. This enzymatic reaction is carried out by protein farnesyltransferase (PFT), which catalyzes the transfer of a 15-carbon isoprenoid lipid unit, a farnesyl group, from farnesyl pyrophosphate to the C-termini of proteins containing a CaaX motif. Inhibition of PFT is lethal to the pathogenic protozoa Plasmodium falciparum. Previously, we have shown that parasites resistant to a tetrahydroquinoline (THQ)-based PFT inhibitor BMS-388891 have mutations leading to amino acid substitutions in PFT that map to the peptide substrate binding domain. We now report the selection of parasites resistant to another THQ PFT inhibitor BMS-339941. In whole cell assays sensitivity to BMS-339941 was reduced by 33-fold in a resistant clone, and biochemical analysis demonstrated a corresponding 33-fold increase in the BMS-339941 K(i) for the mutant PFT enzyme. More detailed kinetic analysis revealed that the mutant enzyme required higher concentration of peptide and farnesyl pyrophosphate substrates for optimum catalysis. Unlike previously characterized parasites resistant to BMS-388891, the resistant parasites have a mutation which is predicted to be in a distinct location of the enzymatic pocket, near the farnesyl pyrophosphate binding pocket. This is the first description of a mutation from any species affecting the farnesyl pyrophosphate binding pocket with reduced efficacy of PFT inhibitors. These data provide further support that PFT is the target of THQ inhibitors in P. falciparum and suggest that PFT inhibitors should be combined with other antimalarial agents to minimize the development of resistant parasites.

Resistance mutations at the lipid substrate binding site of Plasmodium falciparum protein farnesyltransferase.,Eastman RT, White J, Hucke O, Yokoyama K, Verlinde CL, Hast MA, Beese LS, Gelb MH, Rathod PK, Van Voorhis WC Mol Biochem Parasitol. 2007 Mar;152(1):66-71. Epub 2006 Dec 22. PMID:17208314^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Eastman RT, White J, Hucke O, Yokoyama K, Verlinde CL, Hast MA, Beese LS, Gelb MH, Rathod PK, Van Voorhis WC. Resistance mutations at the lipid substrate binding site of Plasmodium falciparum protein farnesyltransferase. Mol Biochem Parasitol. 2007 Mar;152(1):66-71. Epub 2006 Dec 22. PMID:17208314 doi:10.1016/j.molbiopara.2006.11.012

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2iej"

@@ Line 2: / Line 2: @@
 <StructureSection load='2iej' size='340' side='right' caption='[[2iej]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2iej]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IEJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2IEJ FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2iej]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IEJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2IEJ FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=FII:[(3,7,11-TRIMETHYL-DODECA-2,6,10-TRIENYLOXYCARBAMOYL)-METHYL]-PHOSPHONIC+ACID'>FII</scene>, <scene name='pdbligand=S48:METHYL+N-{(3S)-1-[(1-METHYL-1H-IMIDAZOL-5-YL)METHYL]-6-PHENYL-1,2,3,4-TETRAHYDROQUINOLIN-3-YL}-N-[(1-METHYL-1H-IMIDAZOL-4-YL)SULFONYL]GLYCINATE'>S48</scene>, <scene name='pdbligand=SUC:SUCROSE'>SUC</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">FNTA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), FNTB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">FNTA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), FNTB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Protein_farnesyltransferase Protein farnesyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.5.1.58 2.5.1.58] </span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2iej FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2iej OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2iej RCSB], [http://www.ebi.ac.uk/pdbsum/2iej PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2iej FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2iej OCA], [http://pdbe.org/2iej PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2iej RCSB], [http://www.ebi.ac.uk/pdbsum/2iej PDBsum]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/PFTA_HUMAN PFTA_HUMAN]] Catalyzes the transfer of a farnesyl or geranyl-geranyl moiety from farnesyl or geranyl-geranyl pyrophosphate to a cysteine at the fourth position from the C-terminus of several proteins having the C-terminal sequence Cys-aliphatic-aliphatic-X. The alpha subunit is thought to participate in a stable complex with the substrate. The beta subunit binds the peptide substrate. Through RAC1 prenylation and activation may positively regulate neuromuscular junction development downstream of MUSK (By similarity). [[http://www.uniprot.org/uniprot/PFTB_HUMAN PFTB_HUMAN]] Catalyzes the transfer of a farnesyl moiety from farnesyl pyrophosphate to a cysteine at the fourth position from the C-terminus of several proteins. The beta subunit is responsible for peptide-binding.
+[[http://www.uniprot.org/uniprot/FNTA_HUMAN FNTA_HUMAN]] Catalyzes the transfer of a farnesyl or geranyl-geranyl moiety from farnesyl or geranyl-geranyl pyrophosphate to a cysteine at the fourth position from the C-terminus of several proteins having the C-terminal sequence Cys-aliphatic-aliphatic-X. The alpha subunit is thought to participate in a stable complex with the substrate. The beta subunit binds the peptide substrate. Through RAC1 prenylation and activation may positively regulate neuromuscular junction development downstream of MUSK (By similarity). [[http://www.uniprot.org/uniprot/FNTB_HUMAN FNTB_HUMAN]] Catalyzes the transfer of a farnesyl moiety from farnesyl pyrophosphate to a cysteine at the fourth position from the C-terminus of several proteins. The beta subunit is responsible for peptide-binding.
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 28: / Line 28: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2iej" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 35: / Line 36: @@
 __TOC__
 </StructureSection>
-[[Category: Homo sapiens]]
+[[Category: Human]]
 [[Category: Protein farnesyltransferase]]
 [[Category: Beese, L S]]

2iej

From Proteopedia

Revision as of 00:23, 12 September 2015

Human Protein Farnesyltransferase Complexed with Inhibitor Compound STN-48 And FPP Analog at 1.8A Resolution

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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