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| | ==Crystal structure of LysN, alpha-aminoadipate aminotransferase, from Thermus thermophilus HB27== | | ==Crystal structure of LysN, alpha-aminoadipate aminotransferase, from Thermus thermophilus HB27== |
| - | <StructureSection load='3cbf' size='340' side='right' caption='[[3cbf]], [[Resolution|resolution]] 1.67Å' scene=''> | + | <StructureSection load='3cbf' size='340' side='right'caption='[[3cbf]], [[Resolution|resolution]] 1.67Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3cbf]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"flavobacterium_thermophilum"_yoshida_and_oshima_1971 "flavobacterium thermophilum" yoshida and oshima 1971]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CBF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3CBF FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3cbf]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CBF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3CBF FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=N5F:(2S)-2-[({3-HYDROXY-2-METHYL-5-[(PHOSPHONOOXY)METHYL]PYRIDIN-4-YL}METHYL)AMINO]HEXANEDIOIC+ACID'>N5F</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.67Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2dtv|2dtv]], [[2egy|2egy]], [[2z1y|2z1y]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=N5F:(2S)-2-[({3-HYDROXY-2-METHYL-5-[(PHOSPHONOOXY)METHYL]PYRIDIN-4-YL}METHYL)AMINO]HEXANEDIOIC+ACID'>N5F</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">lysN ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=274 "Flavobacterium thermophilum" Yoshida and Oshima 1971])</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=3cbf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cbf OCA], [https://pdbe.org/3cbf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3cbf RCSB], [https://www.ebi.ac.uk/pdbsum/3cbf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3cbf ProSAT]</span></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/2-aminoadipate_transaminase 2-aminoadipate transaminase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.6.1.39 2.6.1.39] </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=3cbf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cbf OCA], [http://pdbe.org/3cbf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3cbf RCSB], [http://www.ebi.ac.uk/pdbsum/3cbf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3cbf ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/LYSN_THET2 LYSN_THET2]] Catalyzes the transfer of an amino group between 2-oxoadipate (2-OA) and glutamate (Glu) to yield alpha-aminodipate (AAA). It can also transaminate glutamate, leucine, and aromatic amino acids. It also contributes in the biosynthesis of other amino acids such as leucine.<ref>PMID:15256574</ref> | + | [https://www.uniprot.org/uniprot/LYSN_THET2 LYSN_THET2] Catalyzes the transfer of an amino group between 2-oxoadipate (2-OA) and glutamate (Glu) to yield alpha-aminodipate (AAA). It can also transaminate glutamate, leucine, and aromatic amino acids. It also contributes in the biosynthesis of other amino acids such as leucine.<ref>PMID:15256574</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | ==See Also== | | ==See Also== |
| - | *[[Aminotransferase|Aminotransferase]] | + | *[[Aminotransferase 3D structures|Aminotransferase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Flavobacterium thermophilum yoshida and oshima 1971]] | + | [[Category: Large Structures]] |
| - | [[Category: 2-aminoadipate transaminase]]
| + | |
| - | [[Category: Fushinobu, S]]
| + | |
| - | [[Category: Kuzuyama, T]]
| + | |
| - | [[Category: Miyagawa, T]]
| + | |
| - | [[Category: Miyazaki, T]]
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| - | [[Category: Nishiyama, M]]
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| - | [[Category: Tomita, T]]
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| - | [[Category: Alpha-aminoadipate aminotransferase]]
| + | |
| - | [[Category: Substrate specifity]]
| + | |
| | [[Category: Thermus thermophilus]] | | [[Category: Thermus thermophilus]] |
| - | [[Category: Transferase]] | + | [[Category: Fushinobu S]] |
| | + | [[Category: Kuzuyama T]] |
| | + | [[Category: Miyagawa T]] |
| | + | [[Category: Miyazaki T]] |
| | + | [[Category: Nishiyama M]] |
| | + | [[Category: Tomita T]] |
| Structural highlights
Function
LYSN_THET2 Catalyzes the transfer of an amino group between 2-oxoadipate (2-OA) and glutamate (Glu) to yield alpha-aminodipate (AAA). It can also transaminate glutamate, leucine, and aromatic amino acids. It also contributes in the biosynthesis of other amino acids such as leucine.[1]
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 PubMed
alpha-Aminoadipate aminotransferase (AAA-AT), a homolog of mammalian kynurenine aminotransferase II (Kat II), transfers an amino group to 2-oxoadipate to yield alpha-aminoadipate in lysine biosynthesis through the alpha-aminoadipate pathway in Thermus thermophilus. AAA-AT catalyzes transamination against various substrates, including AAA, glutamate, leucine, and aromatic amino acids. To elucidate the structural change for recognition of various substrates, we determined crystal structures of AAA-AT in four forms: with pyridoxal 5'-phosphate (PLP) (PLP complex), with PLP and leucine (PLP/Leu complex), with N-phosphopyridoxyl-leucine (PPL) (PPL complex), and with N-phosphopyridoxyl-alpha-aminoadipate (PPA) at 2.67, 2.26, 1.75, and 1.67 A resolution, respectively. The PLP complex is in an open state, whereas PLP/Leu, PPL, and PPA complexes are in closed states with maximal displacement (over 7 A) of the alpha2 helix and the beta1 strand in the small domain to cover the active site, indicating that conformational change is induced by substrate binding. In PPL and PLP/Leu complexes, several hydrophobic residues on the alpha2 helix recognize the hydrophobic side chain of the bound leucine moiety whereas, in the PPA complex, the alpha2 helix rotates to place the guanidium moiety of Arg23 on the helix at the appropriate position to interact with the carboxyl side chain of the AAA moiety. These results indicate that AAA-AT can recognize various kinds of substrates using the mobile alpha2 helix. The crystal structures and site-directed mutagenesis revealed that intersubunit-electrostatic interactions contribute to the elevated thermostability of this enzyme. Proteins 2008. (c) 2008 Wiley-Liss, Inc.
Mechanism for multiple-substrates recognition of alpha-aminoadipate aminotransferase from Thermus thermophilus.,Tomita T, Miyagawa T, Miyazaki T, Fushinobu S, Kuzuyama T, Nishiyama M Proteins. 2008 Sep 2. PMID:18831049[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Miyazaki T, Miyazaki J, Yamane H, Nishiyama M. alpha-Aminoadipate aminotransferase from an extremely thermophilic bacterium, Thermus thermophilus. Microbiology. 2004 Jul;150(Pt 7):2327-34. PMID:15256574 doi:10.1099/mic.0.27037-0
- ↑ Tomita T, Miyagawa T, Miyazaki T, Fushinobu S, Kuzuyama T, Nishiyama M. Mechanism for multiple-substrates recognition of alpha-aminoadipate aminotransferase from Thermus thermophilus. Proteins. 2008 Sep 2. PMID:18831049 doi:10.1002/prot.22245
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