4jax: Difference between revisions
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==Crystal structure of dimeric KlHxk1 in crystal form X== | |||
<StructureSection load='4jax' size='340' side='right' caption='[[4jax]], [[Resolution|resolution]] 2.26Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4jax]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Kluyveromyces_lactis_nrrl_y-1140 Kluyveromyces lactis nrrl y-1140]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4JAX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4JAX FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr> | |||
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene></td></tr> | |||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3o08|3o08]], [[3o1b|3o1b]], [[3o1w|3o1w]], [[3o4w|3o4w]], [[3o5b|3o5b]], [[3o6w|3o6w]], [[3o80|3o80]], [[3o8m|3o8m]], [[4jb1|4jb1]]</td></tr> | |||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">KLLA0D11352g, RAG5 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=284590 Kluyveromyces lactis NRRL Y-1140])</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Hexokinase Hexokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.1 2.7.1.1] </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=4jax FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4jax OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4jax RCSB], [http://www.ebi.ac.uk/pdbsum/4jax PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The bifunctional hexokinase KlHxk1 is a key component of glucose dependent signal transduction in Kluyveromyces lactis. KlHxk1 is phosphorylated in vivo and undergoes ATP-dependent autophosphorylation-inactivation in vitro. This study identifies serine-15 as the site of in vivo phosphorylation and serine-157 as the autophosphorylation-inactivation site. X-ray crystallography of the in vivo phosphorylated enzyme indicates the existence of a ring-shaped symmetrical homodimer carrying two phosphoserine-15 residues. In contrast, small-angle X-ray scattering and equilibrium sedimentation analyses reveal the existence of monomeric phosphoserine-15 KlHxk1 in solution. While phosphorylation at serine-15 and concomitant homodimer dissociation are likely to be involved in glucose signalling, mechanism and putative physiological significance of KlHxk1 inactivation by autophosphorylation at serine-157 remain to be established. | |||
In vivo phosphorylation and in vitro autophosphorylation-inactivation of Kluyveromyces lactis hexokinase KlHxk1.,Kettner K, Kuettner EB, Otto A, Lilie H, Golbik RP, Strater N, Kriegel TM Biochem Biophys Res Commun. 2013 Apr 10. pii: S0006-291X(13)00600-1. doi:, 10.1016/j.bbrc.2013.03.121. PMID:23583397<ref>PMID:23583397</ref> | |||
== | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | |||
==See Also== | |||
*[[Hexokinase|Hexokinase]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Hexokinase]] | [[Category: Hexokinase]] | ||
[[Category: Kluyveromyces lactis nrrl y-1140]] | [[Category: Kluyveromyces lactis nrrl y-1140]] | ||
[[Category: Golbik, R P | [[Category: Golbik, R P]] | ||
[[Category: Kettner, K | [[Category: Kettner, K]] | ||
[[Category: Kriegel, T M | [[Category: Kriegel, T M]] | ||
[[Category: Kuettner, E B | [[Category: Kuettner, E B]] | ||
[[Category: Lilie, H | [[Category: Lilie, H]] | ||
[[Category: Otto, A | [[Category: Otto, A]] | ||
[[Category: Strater, N | [[Category: Strater, N]] | ||
[[Category: Atp binding]] | [[Category: Atp binding]] | ||
[[Category: Mig1 binding]] | [[Category: Mig1 binding]] | ||
[[Category: Phosphorylation]] | [[Category: Phosphorylation]] | ||
