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[[Image:1pyd.png|left|200px]]


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==CATALYTIC CENTERS IN THE THIAMIN DIPHOSPHATE DEPENDENT ENZYME PYRUVATE DECARBOXYLASE AT 2.4 ANGSTROMS RESOLUTION==
The line below this paragraph, containing "STRUCTURE_1pyd", creates the "Structure Box" on the page.
<StructureSection load='1pyd' size='340' side='right'caption='[[1pyd]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1pyd]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PYD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PYD FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=TPP:THIAMINE+DIPHOSPHATE'>TPP</scene></td></tr>
{{STRUCTURE_1pyd| PDB=1pyd |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1pyd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pyd OCA], [https://pdbe.org/1pyd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1pyd RCSB], [https://www.ebi.ac.uk/pdbsum/1pyd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1pyd ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PDC1_YEAST PDC1_YEAST] Major of three pyruvate decarboxylases (PDC1, PDC5, PDC6) implicated in the nonoxidative conversion of pyruvate to acetaldehyde and carbon dioxide during alcoholic fermentation. Most of the produced acetaldehyde is subsequently reduced to ethanol, but some is required for cytosolic acetyl-CoA production for biosynthetic pathways. The enzyme is also one of five 2-oxo acid decarboxylases (PDC1, PDC5, PDC6, ARO10, and THI3) able to decarboxylate more complex 2-oxo acids (alpha-ketoacids) than pyruvate, which seem mainly involved in amino acid catabolism. Here the enzyme catalyzes the decarboxylation of amino acids, which, in a first step, have been transaminated to the corresponding 2-oxo acids. In a third step, the resulting aldehydes are reduced to alcohols, collectively referred to as fusel oils or alcohols. Its preferred substrates are the transaminated amino acids valine, isoleucine, phenylalanine, and tryptophan, whereas leucine is no substrate. In a side-reaction the carbanionic intermediate (or active aldehyde) generated by decarboxylation or by activation of an aldehyde can react with an aldehyde via condensation (or carboligation) yielding a 2-hydroxy ketone, collectively called acyloins.<ref>PMID:4687392</ref> <ref>PMID:8866484</ref> <ref>PMID:9341119</ref> <ref>PMID:9748245</ref> <ref>PMID:10234824</ref> <ref>PMID:10231381</ref> <ref>PMID:10753893</ref> <ref>PMID:11141278</ref> <ref>PMID:12499363</ref> <ref>PMID:12902239</ref>
== 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/py/1pyd_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=1pyd ConSurf].
<div style="clear:both"></div>


===CATALYTIC CENTERS IN THE THIAMIN DIPHOSPHATE DEPENDENT ENZYME PYRUVATE DECARBOXYLASE AT 2.4 ANGSTROMS RESOLUTION===
==See Also==
 
*[[Pyruvate decarboxylase|Pyruvate decarboxylase]]
 
== References ==
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[[Category: Large Structures]]
{{ABSTRACT_PUBMED_8512926}}
 
==About this Structure==
1PYD is a 2 chains structure of sequences from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PYD OCA].
 
==Reference==
<ref group="xtra">PMID:8512926</ref><references group="xtra"/>
[[Category: Pyruvate decarboxylase]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Dyda, F.]]
[[Category: Dyda F]]
[[Category: Furey, W.]]
[[Category: Furey W]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Feb 16 23:50:34 2009''

Latest revision as of 11:11, 14 February 2024

CATALYTIC CENTERS IN THE THIAMIN DIPHOSPHATE DEPENDENT ENZYME PYRUVATE DECARBOXYLASE AT 2.4 ANGSTROMS RESOLUTIONCATALYTIC CENTERS IN THE THIAMIN DIPHOSPHATE DEPENDENT ENZYME PYRUVATE DECARBOXYLASE AT 2.4 ANGSTROMS RESOLUTION

Structural highlights

1pyd is a 2 chain structure with sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.4Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PDC1_YEAST Major of three pyruvate decarboxylases (PDC1, PDC5, PDC6) implicated in the nonoxidative conversion of pyruvate to acetaldehyde and carbon dioxide during alcoholic fermentation. Most of the produced acetaldehyde is subsequently reduced to ethanol, but some is required for cytosolic acetyl-CoA production for biosynthetic pathways. The enzyme is also one of five 2-oxo acid decarboxylases (PDC1, PDC5, PDC6, ARO10, and THI3) able to decarboxylate more complex 2-oxo acids (alpha-ketoacids) than pyruvate, which seem mainly involved in amino acid catabolism. Here the enzyme catalyzes the decarboxylation of amino acids, which, in a first step, have been transaminated to the corresponding 2-oxo acids. In a third step, the resulting aldehydes are reduced to alcohols, collectively referred to as fusel oils or alcohols. Its preferred substrates are the transaminated amino acids valine, isoleucine, phenylalanine, and tryptophan, whereas leucine is no substrate. In a side-reaction the carbanionic intermediate (or active aldehyde) generated by decarboxylation or by activation of an aldehyde can react with an aldehyde via condensation (or carboligation) yielding a 2-hydroxy ketone, collectively called acyloins.[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]

Evolutionary Conservation

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

See Also

References

  1. ↑ Lehmann H, Fischer G, Hubner G, Kohnert KD, Schellenberger A. The influence of steric and electronic parameters on the substrate behavior of -oxo acids to yeast pyruvate decarboxylase. Eur J Biochem. 1973 Jan 3;32(1):83-7. PMID:4687392
  2. ↑ Liesen T, Hollenberg CP, Heinisch JJ. ERA, a novel cis-acting element required for autoregulation and ethanol repression of PDC1 transcription in Saccharomyces cerevisiae. Mol Microbiol. 1996 Aug;21(3):621-32. PMID:8866484
  3. ↑ Dickinson JR, Lanterman MM, Danner DJ, Pearson BM, Sanz P, Harrison SJ, Hewlins MJ. A 13C nuclear magnetic resonance investigation of the metabolism of leucine to isoamyl alcohol in Saccharomyces cerevisiae. J Biol Chem. 1997 Oct 24;272(43):26871-8. PMID:9341119
  4. ↑ Dickinson JR, Harrison SJ, Hewlins MJ. An investigation of the metabolism of valine to isobutyl alcohol in Saccharomyces cerevisiae. J Biol Chem. 1998 Oct 2;273(40):25751-6. PMID:9748245
  5. ↑ Flikweert MT, de Swaaf M, van Dijken JP, Pronk JT. Growth requirements of pyruvate-decarboxylase-negative Saccharomyces cerevisiae. FEMS Microbiol Lett. 1999 May 1;174(1):73-9. PMID:10234824
  6. ↑ Eberhardt I, Cederberg H, Li H, Konig S, Jordan F, Hohmann S. Autoregulation of yeast pyruvate decarboxylase gene expression requires the enzyme but not its catalytic activity. Eur J Biochem. 1999 May;262(1):191-201. PMID:10231381
  7. ↑ Dickinson JR, Harrison SJ, Dickinson JA, Hewlins MJ. An investigation of the metabolism of isoleucine to active Amyl alcohol in Saccharomyces cerevisiae. J Biol Chem. 2000 Apr 14;275(15):10937-42. PMID:10753893
  8. ↑ Neuser F, Zorn H, Berger RG. Generation of odorous acyloins by yeast pyruvate decarboxylases and their occurrence in sherry and soy sauce. J Agric Food Chem. 2000 Dec;48(12):6191-5. PMID:11141278
  9. ↑ Dickinson JR, Salgado LE, Hewlins MJ. The catabolism of amino acids to long chain and complex alcohols in Saccharomyces cerevisiae. J Biol Chem. 2003 Mar 7;278(10):8028-34. Epub 2002 Dec 23. PMID:12499363 doi:10.1074/jbc.M211914200
  10. ↑ Vuralhan Z, Morais MA, Tai SL, Piper MD, Pronk JT. Identification and characterization of phenylpyruvate decarboxylase genes in Saccharomyces cerevisiae. Appl Environ Microbiol. 2003 Aug;69(8):4534-41. PMID:12902239

1pyd, resolution 2.40Å

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