2r3v
From Proteopedia
(Difference between revisions)
| (5 intermediate revisions not shown.) | |||
| Line 1: | Line 1: | ||
| - | {{STRUCTURE_2r3v| PDB=2r3v | SCENE= }} | ||
| - | ===The Biochemical and Structural Basis for Feedback Inhibition of Mevalonate Kinase and Isoprenoid Metabolism=== | ||
| - | {{ABSTRACT_PUBMED_18302342}} | ||
| - | == | + | ==The Biochemical and Structural Basis for Feedback Inhibition of Mevalonate Kinase and Isoprenoid Metabolism== |
| - | [[http://www.uniprot.org/uniprot/KIME_HUMAN KIME_HUMAN | + | <StructureSection load='2r3v' size='340' side='right'caption='[[2r3v]], [[Resolution|resolution]] 2.50Å' scene=''> |
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[2r3v]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2R3V OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2R3V FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5Å</td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2r3v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2r3v OCA], [https://pdbe.org/2r3v PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2r3v RCSB], [https://www.ebi.ac.uk/pdbsum/2r3v PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2r3v ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Disease == | ||
| + | [https://www.uniprot.org/uniprot/KIME_HUMAN KIME_HUMAN] Defects in MVK are the cause of mevalonic aciduria (MEVA) [MIM:[https://omim.org/entry/610377 610377]. It is an accumulation of mevalonic acid which causes a variety of symptoms such as psychomotor retardation, dysmorphic features, cataracts, hepatosplenomegaly, lymphadenopathy, anemia, hypotonia, myopathy, and ataxia.<ref>PMID:1377680</ref> <ref>PMID:11313768</ref> <ref>PMID:10417275</ref> <ref>PMID:10401001</ref> <ref>PMID:11313769</ref> Defects in MVK are the cause of hyperimmunoglobulinemia D and periodic fever syndrome (HIDS) [MIM:[https://omim.org/entry/260920 260920]. HIDS is an autosomal recessive disease characterized by recurrent episodes of unexplained high fever associated with skin rash, diarrhea, adenopathy (swollen, tender lymph nodes), athralgias and/or arthritis. Concentration of IgD, and often IgA, are above normal.<ref>PMID:11313768</ref> <ref>PMID:11313769</ref> <ref>PMID:10369261</ref> <ref>PMID:10369262</ref> <ref>PMID:15536479</ref> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/KIME_HUMAN KIME_HUMAN] May be a regulatory site in cholesterol biosynthetic pathway. | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/r3/2r3v_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2r3v ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Mevalonate kinase (MK), which catalyzes a key reaction in polyisoprenoid and sterol metabolism in many organisms, is subject to feedback regulation by farnesyl diphosphate and related compounds. The structures of human mevalonate kinase and a binary complex of the rat enzyme incubated with farnesyl thiodiphosphate (FSPP) are reported. Significant FSPP hydrolysis occurs under crystallization conditions; this results in detection of farnesyl thiophosphate (FSP) in the structure of the binary complex. Farnesyl thiodiphosphate competes with substrate ATP to produce feedback inhibition of mevalonate kinase. The binding sites for these metabolites overlap, with the phosphate of FSP nearly superimposed on ATP's beta-phosphate and FSP's polyisoprenoid chain overlapping ATP's adenosine moiety. Several hydrophobic amino acid side chains are positioned near the polyisoprenoid chain of FSP and their functional significance has been evaluated in mutagenesis experiments with human MK, which exhibits the highest reported sensitivity to feedback inhibition. Results suggest that single and double mutations at T104 and I196 produce a significant inflation of the K(i) for FSPP (approximately 40-fold for T104A/I196A). Such an effect persists when K(i) values are normalized for effects on the K(m) for ATP, suggesting that it may be possible to engineer MK proteins with altered sensitivity to feedback inhibition. Comparison of animal MK protein alignments and structures with those of a MK protein from Streptococcus pneumoniae indicates that sequence differences between N- and C-terminal domains correlate with differences in interdomain angles. Bacterial MK proteins exhibit more solvent exposure of feedback inhibitor binding sites and, consequently, weaker binding of these inhibitors. | ||
| - | + | Biochemical and structural basis for feedback inhibition of mevalonate kinase and isoprenoid metabolism.,Fu Z, Voynova NE, Herdendorf TJ, Miziorko HM, Kim JJ Biochemistry. 2008 Mar 25;47(12):3715-24. Epub 2008 Feb 27. PMID:18302342<ref>PMID:18302342</ref> | |
| - | + | ||
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| + | <div class="pdbe-citations 2r3v" style="background-color:#fffaf0;"></div> | ||
| - | == | + | ==See Also== |
| - | + | *[[Mevalonate kinase|Mevalonate kinase]] | |
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
| - | [[Category: | + | [[Category: Large Structures]] |
| - | [[Category: Fu | + | [[Category: Fu Z]] |
| - | [[Category: Kim | + | [[Category: Kim JP]] |
| - | [[Category: Miziorko | + | [[Category: Miziorko HM]] |
| - | [[Category: Voynova | + | [[Category: Voynova NE]] |
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
Current revision
The Biochemical and Structural Basis for Feedback Inhibition of Mevalonate Kinase and Isoprenoid Metabolism
| |||||||||||

