3vm5: Difference between revisions
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The | ==Recombinant medaka fish alpha-amylase expressed in yeast Pichia pastoris== | ||
<StructureSection load='3vm5' size='340' side='right'caption='[[3vm5]], [[Resolution|resolution]] 2.85Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3vm5]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Oryzias_latipes Oryzias latipes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3VM5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3VM5 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]] 2.85Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</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=3vm5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3vm5 OCA], [https://pdbe.org/3vm5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3vm5 RCSB], [https://www.ebi.ac.uk/pdbsum/3vm5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3vm5 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/AMY_ORYLA AMY_ORYLA] Catalyzes the hydrolysis of alpha-1,4 glycosidic linkages in starch, glycogen and similar oligosaccharides.<ref>PMID:22613096</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The medaka fish alpha-amylase was expressed and purified. The expression systems were constructed using methylotrophic yeast Pichia pastoris, and the recombinant proteins were secreted into the culture medium. Purified recombinant alpha-amylase exhibited starch hydrolysis activity. The optimal pH, denaturation temperature, and K(M) and V(max) values were determined; chloride ions were essential for enzyme activity. The purified protein was also crystallized and examined by X-ray crystallography. The structure has the (alpha/beta)(8) barrel fold, as do other known alpha-amylases, and the overall structure is very similar to the structure of vertebrate (human and pig) alpha-amylases. A novel expression plasmid was developed. Using this plasmid, high-throughput construction of an expression system by homologous recombination in P. pastoris cells, previously reported for membrane proteins, was successfully applied to the secretory protein. | |||
Structural and functional characterization of recombinant medaka fish alpha-amylase expressed in yeast Pichia pastoris.,Mizutani K, Toyoda M, Otake Y, Yoshioka S, Takahashi N, Mikami B Biochim Biophys Acta. 2012 May 18. PMID:22613096<ref>PMID:22613096</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 3vm5" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Amylase 3D structures|Amylase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Oryzias latipes]] | |||
[[Category: Mikami B]] | |||
[[Category: Mizutani K]] | |||
[[Category: Toyoda M]] | |||