1n8p: Difference between revisions
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==Crystal Structure of cystathionine gamma-lyase from yeast== | |||
<StructureSection load='1n8p' size='340' side='right'caption='[[1n8p]], [[Resolution|resolution]] 2.60Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1n8p]] is a 4 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=1N8P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1N8P 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]] 2.6Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></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=1n8p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1n8p OCA], [https://pdbe.org/1n8p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1n8p RCSB], [https://www.ebi.ac.uk/pdbsum/1n8p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1n8p ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/CYS3_YEAST CYS3_YEAST] | |||
== 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/n8/1n8p_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=1n8p ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The crystal structure of cystathionine gamma-lyase (CGL) from yeast has been solved by molecular replacement at a resolution of 2.6 A. The molecule consists of 393 amino acid residues and one PLP moiety and is arranged in the crystal as a tetramer with D2 symmetry as in other related enzymes of the Cys-Met-metabolism PLP-dependent family like cystathionine beta-lyase (CBL). A structure comparison with other family members revealed surprising insights into the tuning of enzymatic specificity between the different family members. CGLs from yeast or human are virtually identical at their active sites to cystathionine gamma-synthase (CGS) from E. coli. Both CGLs and bacterial CGSs exhibit gamma-synthase and gamma-lyase activities depending on their position in the metabolic pathway and the available substrates. This group of enzymes has a glutamate (E333 in yeast CGL) which binds to the distal group of cystathionine (CTT) or the amino group of cysteine. Plant CGSs use homoserine phosphate instead of O-succinyl-homoserine as one substrate. This is reflected by a partially different active site structure in plant CGSs. In CGL and CBL the pseudosymmetric substrate must dock at the active site in different orientations, with S in gamma-position (CBL) or in delta-position (CGL). The conserved glutamate steers the substrate as seen in other CGLs. In CBLs this position is occupied by either tyrosine or hydrophobic residues directing binding of CTT such that S is in the in gamma-position. In methionine gamma-lyase a hydrophic patch operates as recognition site for the methyl group of the methionine substrate. | |||
Determinants of enzymatic specificity in the Cys-Met-metabolism PLP-dependent enzymes family: crystal structure of cystathionine gamma-lyase from yeast and intrafamiliar structure comparison.,Messerschmidt A, Worbs M, Steegborn C, Wahl MC, Huber R, Laber B, Clausen T Biol Chem. 2003 Mar;384(3):373-86. PMID:12715888<ref>PMID:12715888</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1n8p" style="background-color:#fffaf0;"></div> | |||
== | ==See Also== | ||
[[ | *[[Cystathionine beta-lyase|Cystathionine beta-lyase]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
[[Category: | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Saccharomyces cerevisiae]] | [[Category: Saccharomyces cerevisiae]] | ||
[[Category: Clausen | [[Category: Clausen T]] | ||
[[Category: Huber | [[Category: Huber R]] | ||
[[Category: Messerschmidt | [[Category: Messerschmidt A]] | ||
[[Category: Steegborn | [[Category: Steegborn C]] | ||
[[Category: Wahl | [[Category: Wahl MC]] | ||
[[Category: Worbs | [[Category: Worbs M]] | ||