1h1c: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
==Histidinol-phosphate aminotransferase (HisC) from Thermotoga maritima== | ==Histidinol-phosphate aminotransferase (HisC) from Thermotoga maritima== | ||
<StructureSection load='1h1c' size='340' side='right' caption='[[1h1c]], [[Resolution|resolution]] 2.85Å' scene=''> | <StructureSection load='1h1c' size='340' side='right'caption='[[1h1c]], [[Resolution|resolution]] 2.85Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1h1c]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_43589 Atcc 43589]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H1C OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1H1C FirstGlance]. <br> | <table><tr><td colspan='2'>[[1h1c]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_43589 Atcc 43589]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H1C OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1H1C FirstGlance]. <br> | ||
| Line 29: | Line 29: | ||
</div> | </div> | ||
<div class="pdbe-citations 1h1c" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 1h1c" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Aminotransferase 3D structures|Aminotransferase 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
| Line 35: | Line 38: | ||
[[Category: Atcc 43589]] | [[Category: Atcc 43589]] | ||
[[Category: Histidinol-phosphate transaminase]] | [[Category: Histidinol-phosphate transaminase]] | ||
[[Category: Large Structures]] | |||
[[Category: Fernandez, F J]] | [[Category: Fernandez, F J]] | ||
[[Category: Vega, M C]] | [[Category: Vega, M C]] | ||
Revision as of 09:42, 24 July 2019
Histidinol-phosphate aminotransferase (HisC) from Thermotoga maritimaHistidinol-phosphate aminotransferase (HisC) from Thermotoga maritima
Structural highlights
Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedIn histidine biosynthesis, histidinol-phosphate aminotransferase catalyzes the transfer of the amino group from glutamate to imidazole acetol-phosphate producing 2-oxoglutarate and histidinol phosphate. In some organisms such as the hyperthermophile Thermotoga maritima, specific tyrosine and aromatic amino acid transaminases have not been identified to date, suggesting an additional role for histidinol-phosphate aminotransferase in other transamination reactions generating aromatic amino acids. To gain insight into the specific function of this transaminase, we have determined its crystal structure in the absence of any ligand except phosphate, in the presence of covalently bound pyridoxal 5'-phosphate, of the coenzyme histidinol phosphate adduct, and of pyridoxamine 5'-phosphate. The enzyme accepts histidinol phosphate, tyrosine, tryptophan, and phenylalanine, but not histidine, as substrates. The structures provide a model of how these different substrates could be accommodated by histidinol-phosphate aminotransferase. Some of the structural features of the enzyme are more preserved between the T. maritima enzyme and a related threonine-phosphate decarboxylase from S. typhimurium than with histidinol-phosphate aminotransferases from different organisms. Structural studies of the catalytic reaction pathway of a hyperthermophilic histidinol-phosphate aminotransferase.,Fernandez FJ, Vega MC, Lehmann F, Sandmeier E, Gehring H, Christen P, Wilmanns M J Biol Chem. 2004 May 14;279(20):21478-88. Epub 2004 Mar 8. PMID:15007066[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
|
| ||||||||||||||||||||||