7s8w

From Proteopedia

(Difference between revisions)

Current revision

Amycolatopsis sp. T-1-60 N-succinylamino acid racemase/o-succinylbenzoate synthase R266Q mutant in complex with N-succinylphenylglycine

Structural highlights

7s8w is a 4 chain structure with sequence from Amycolatopsis sp.. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.9Å
Ligands:	, ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

NSAR_AMYSP Acts as a N-succinylamino acid racemase (NSAR) that catalyzes the racemization of N-succinyl-phenylglycine and N-succinyl-methionine (PubMed:14705949, PubMed:24955846). Can catalyze the racemization of a broad range of N-acylamino acids, including N-acetyl-D/L-methionine, N-propionyl-D/L-methionine, N-butyryl-D/L-methionine and N-chloroacetyl-L-valine (PubMed:7766084, PubMed:10194342, PubMed:14705949, PubMed:23130969). Also converts 2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate (SHCHC) to 2-succinylbenzoate (OSB) (PubMed:10194342, PubMed:14705949, PubMed:24955846). Catalyzes both N-succinylamino acid racemization and OSB synthesis at equivalent rates (PubMed:14705949, PubMed:24955846). NSAR is probably the biological function of this enzyme (Probable).^[1] ^[2] ^[3] ^[4] ^[5] ^[6] ^[7]

Publication Abstract from PubMed

Catalytic promiscuity is the coincidental ability to catalyze nonbiological reactions in the same active site as the native biological reaction. Several lines of evidence show that catalytic promiscuity plays a role in the evolution of new enzyme functions. Thus, studying catalytic promiscuity can help identify structural features that predispose an enzyme to evolve new functions. This study identifies a potentially preadaptive residue in a promiscuous N-succinylamino acid racemase/o-succinylbenzoate synthase (NSAR/OSBS) enzyme from Amycolatopsis sp. T-1-60. This enzyme belongs to a branch of the OSBS family which includes many catalytically promiscuous NSAR/OSBS enzymes. R266 is conserved in all members of the NSAR/OSBS subfamily. However, the homologous position is usually hydrophobic in other OSBS subfamilies, whose enzymes lack NSAR activity. The second-shell amino acid R266 is close to the catalytic acid/base K263, but it does not contact the substrate, suggesting that R266 could affect the catalytic mechanism. Mutating R266 to glutamine in Amycolatopsis NSAR/OSBS profoundly reduces NSAR activity but moderately reduces OSBS activity. This is due to a 1000-fold decrease in the rate of proton exchange between the substrate and the general acid/base catalyst K263. This mutation is less deleterious for the OSBS reaction because K263 forms a cation-pi interaction with the OSBS substrate and/or the intermediate, rather than acting as a general acid/base catalyst. Together, the data explain how R266 contributes to NSAR reaction specificity and was likely an essential preadaptation for the evolution of NSAR activity.

Second-Shell Amino Acid R266 Helps Determine N-Succinylamino Acid Racemase Reaction Specificity in Promiscuous N-Succinylamino Acid Racemase/o-Succinylbenzoate Synthase Enzymes.,Truong DP, Rousseau S, Machala BW, Huddleston JP, Zhu M, Hull KG, Romo D, Raushel FM, Sacchettini JC, Glasner ME Biochemistry. 2021 Nov 30. doi: 10.1021/acs.biochem.1c00627. PMID:34845903^[8]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Palmer DR, Garrett JB, Sharma V, Meganathan R, Babbitt PC, Gerlt JA. Unexpected divergence of enzyme function and sequence: "N-acylamino acid racemase" is o-succinylbenzoate synthase. Biochemistry. 1999 Apr 6;38(14):4252-8. PMID:10194342 doi:10.1021/bi990140p
↑ Taylor Ringia EA, Garrett JB, Thoden JB, Holden HM, Rayment I, Gerlt JA. Evolution of enzymatic activity in the enolase superfamily: functional studies of the promiscuous o-succinylbenzoate synthase from Amycolatopsis. Biochemistry. 2004 Jan 13;43(1):224-9. PMID:14705949 doi:10.1021/bi035815+
↑ Baxter S, Royer S, Grogan G, Brown F, Holt-Tiffin KE, Taylor IN, Fotheringham IG, Campopiano DJ. An Improved Racemase/Acylase Biotransformation for the Preparation of Enantiomerically Pure Amino Acids. J Am Chem Soc. 2012 Nov 15. PMID:23130969 doi:http://dx.doi.org/10.1021/ja305438y
↑ McMillan AW, Lopez MS, Zhu M, Morse BC, Yeo IC, Amos J, Hull K, Romo D, Glasner ME. Role of an active site loop in the promiscuous activities of Amycolatopsis sp. T-1-60 NSAR/OSBS. Biochemistry. 2014 Jul 15;53(27):4434-44. PMID:24955846 doi:10.1021/bi500573v
↑ Tokuyama S, Hatano K. Purification and properties of thermostable N-acylamino acid racemase from Amycolatopsis sp. TS-1-60. Appl Microbiol Biotechnol. 1995 Mar;42(6):853-9. PMID:7766084 doi:10.1007/BF00191181
↑ Glasner ME, Fayazmanesh N, Chiang RA, Sakai A, Jacobson MP, Gerlt JA, Babbitt PC. Evolution of structure and function in the o-succinylbenzoate synthase/N-acylamino acid racemase family of the enolase superfamily. J Mol Biol. 2006 Jun 30;360(1):228-50. PMID:16740275 doi:10.1016/j.jmb.2006.04.055
↑ McMillan AW, Lopez MS, Zhu M, Morse BC, Yeo IC, Amos J, Hull K, Romo D, Glasner ME. Role of an active site loop in the promiscuous activities of Amycolatopsis sp. T-1-60 NSAR/OSBS. Biochemistry. 2014 Jul 15;53(27):4434-44. PMID:24955846 doi:10.1021/bi500573v
↑ Truong DP, Rousseau S, Machala BW, Huddleston JP, Zhu M, Hull KG, Romo D, Raushel FM, Sacchettini JC, Glasner ME. Second-Shell Amino Acid R266 Helps Determine N-Succinylamino Acid Racemase Reaction Specificity in Promiscuous N-Succinylamino Acid Racemase/o-Succinylbenzoate Synthase Enzymes. Biochemistry. 2021 Nov 30. doi: 10.1021/acs.biochem.1c00627. PMID:34845903 doi:http://dx.doi.org/10.1021/acs.biochem.1c00627

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/7s8w"

@@ Line 1: / Line 1: @@
-'''Unreleased structure'''
-The entry 7s8w is ON HOLD
+==Amycolatopsis sp. T-1-60 N-succinylamino acid racemase/o-succinylbenzoate synthase R266Q mutant in complex with N-succinylphenylglycine==
+<StructureSection load='7s8w' size='340' side='right'caption='[[7s8w]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[7s8w]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Amycolatopsis_sp. Amycolatopsis sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7S8W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7S8W 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]] 2.9&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=1PE:PENTAETHYLENE+GLYCOL'>1PE</scene>, <scene name='pdbligand=8JI:N-succinyl-L-phenylglycine'>8JI</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=7s8w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7s8w OCA], [https://pdbe.org/7s8w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7s8w RCSB], [https://www.ebi.ac.uk/pdbsum/7s8w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7s8w ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/NSAR_AMYSP NSAR_AMYSP] Acts as a N-succinylamino acid racemase (NSAR) that catalyzes the racemization of N-succinyl-phenylglycine and N-succinyl-methionine (PubMed:14705949, PubMed:24955846). Can catalyze the racemization of a broad range of N-acylamino acids, including N-acetyl-D/L-methionine, N-propionyl-D/L-methionine, N-butyryl-D/L-methionine and N-chloroacetyl-L-valine (PubMed:7766084, PubMed:10194342, PubMed:14705949, PubMed:23130969). Also converts 2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate (SHCHC) to 2-succinylbenzoate (OSB) (PubMed:10194342, PubMed:14705949, PubMed:24955846). Catalyzes both N-succinylamino acid racemization and OSB synthesis at equivalent rates (PubMed:14705949, PubMed:24955846). NSAR is probably the biological function of this enzyme (Probable).<ref>PMID:10194342</ref> <ref>PMID:14705949</ref> <ref>PMID:23130969</ref> <ref>PMID:24955846</ref> <ref>PMID:7766084</ref> <ref>PMID:16740275</ref> <ref>PMID:24955846</ref>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Catalytic promiscuity is the coincidental ability to catalyze nonbiological reactions in the same active site as the native biological reaction. Several lines of evidence show that catalytic promiscuity plays a role in the evolution of new enzyme functions. Thus, studying catalytic promiscuity can help identify structural features that predispose an enzyme to evolve new functions. This study identifies a potentially preadaptive residue in a promiscuous N-succinylamino acid racemase/o-succinylbenzoate synthase (NSAR/OSBS) enzyme from Amycolatopsis sp. T-1-60. This enzyme belongs to a branch of the OSBS family which includes many catalytically promiscuous NSAR/OSBS enzymes. R266 is conserved in all members of the NSAR/OSBS subfamily. However, the homologous position is usually hydrophobic in other OSBS subfamilies, whose enzymes lack NSAR activity. The second-shell amino acid R266 is close to the catalytic acid/base K263, but it does not contact the substrate, suggesting that R266 could affect the catalytic mechanism. Mutating R266 to glutamine in Amycolatopsis NSAR/OSBS profoundly reduces NSAR activity but moderately reduces OSBS activity. This is due to a 1000-fold decrease in the rate of proton exchange between the substrate and the general acid/base catalyst K263. This mutation is less deleterious for the OSBS reaction because K263 forms a cation-pi interaction with the OSBS substrate and/or the intermediate, rather than acting as a general acid/base catalyst. Together, the data explain how R266 contributes to NSAR reaction specificity and was likely an essential preadaptation for the evolution of NSAR activity.
-Authors: Truong, D.P., Rousseau, S., Sacchettini, J.C., Glasner, M.E.
+Second-Shell Amino Acid R266 Helps Determine N-Succinylamino Acid Racemase Reaction Specificity in Promiscuous N-Succinylamino Acid Racemase/o-Succinylbenzoate Synthase Enzymes.,Truong DP, Rousseau S, Machala BW, Huddleston JP, Zhu M, Hull KG, Romo D, Raushel FM, Sacchettini JC, Glasner ME Biochemistry. 2021 Nov 30. doi: 10.1021/acs.biochem.1c00627. PMID:34845903<ref>PMID:34845903</ref>
-Description: Amycolatopsis sp. T-1-60 N-succinylamino acid racemase/o-succinylbenzoate synthase R266Q mutant in complex with N-succinylphenylglycine
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-[[Category: Unreleased Structures]]
+</div>
-[[Category: Glasner, M.E]]
+<div class="pdbe-citations 7s8w" style="background-color:#fffaf0;"></div>
-[[Category: Sacchettini, J.C]]
+== References ==
-[[Category: Rousseau, S]]
+<references/>
-[[Category: Truong, D.P]]
+__TOC__
+</StructureSection>
+[[Category: Amycolatopsis sp]]
+[[Category: Large Structures]]
+[[Category: Glasner ME]]
+[[Category: Rousseau S]]
+[[Category: Sacchettini JC]]
+[[Category: Truong DP]]

7s8w

From Proteopedia

Current revision

Amycolatopsis sp. T-1-60 N-succinylamino acid racemase/o-succinylbenzoate synthase R266Q mutant in complex with N-succinylphenylglycine

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

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