Structural highlights
2o7b is a 8 chain structure with sequence from "rhodococcus_capsulatus"_molisch_1907 "rhodococcus capsulatus" molisch 1907. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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| Ligands: | |
| NonStd Res: | |
| Related: | 2o6y, 1gkm, 1w27, 1y2m, 1t6j, 2nyn |
| Gene: | hutH ("Rhodococcus capsulatus" Molisch 1907) |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
[TALY_RHOS4] Catalyzes the non-oxidative deamination of L-tyrosine. Has very low phenylalanine ammonia-lyase activity (in vitro).[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
Aromatic amino acid ammonia-lyases catalyze the deamination of L-His, L-Phe, and L-Tyr, yielding ammonia plus aryl acids bearing an alpha,beta-unsaturated propenoic acid. We report crystallographic analyses of unliganded Rhodobacter sphaeroides tyrosine ammonia-lyase (RsTAL) and RsTAL bound to p-coumarate and caffeate. His 89 of RsTAL forms a hydrogen bond with the p-hydroxyl moieties of coumarate and caffeate. His 89 is conserved in TALs but replaced in phenylalanine ammonia-lyases (PALs) and histidine ammonia-lyases (HALs). Substitution of His 89 by Phe, a characteristic residue of PALs, yields a mutant with a switch in kinetic preference from L-Tyr to L-Phe. Structures of the H89F mutant in complex with the PAL product, cinnamate, or the PAL-specific inhibitor, 2-aminoindan-2-phosphonate (AIP), support the role of position 89 as a specificity determinant in the family of aromatic amino acid ammonia-lyases and aminomutases responsible for beta-amino acid biosynthesis.
Structural determinants and modulation of substrate specificity in phenylalanine-tyrosine ammonia-lyases.,Louie GV, Bowman ME, Moffitt MC, Baiga TJ, Moore BS, Noel JP Chem Biol. 2006 Dec;13(12):1327-38. PMID:17185228[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Louie GV, Bowman ME, Moffitt MC, Baiga TJ, Moore BS, Noel JP. Structural determinants and modulation of substrate specificity in phenylalanine-tyrosine ammonia-lyases. Chem Biol. 2006 Dec;13(12):1327-38. PMID:17185228 doi:10.1016/j.chembiol.2006.11.011
- ↑ Louie GV, Bowman ME, Moffitt MC, Baiga TJ, Moore BS, Noel JP. Structural determinants and modulation of substrate specificity in phenylalanine-tyrosine ammonia-lyases. Chem Biol. 2006 Dec;13(12):1327-38. PMID:17185228 doi:10.1016/j.chembiol.2006.11.011
