Rhea - reaction knowledgebase

Enzymes

UniProtKB ^help_outline	38,555 proteins
Enzyme class ^help_outline	EC 6.3.2.8 UDP-N-acetylmuramate--L-alanine ligase
GO Molecular Function ^help_outline	GO:0008763 UDP-N-acetylmuramate-L-alanine ligase activity

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Name ^help_outline UDP-N-acetyl-α-D-muramate Identifier CHEBI:70757 Charge -3 Formula C20H28N3O19P2 InChIKey^help_outline NQBRVZNDBBMBLJ-MQTLHLSBSA-K SMILES^help_outline C[C@@H](O[C@H]1[C@H](O)[C@@H](CO)O[C@H](OP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H]([C@H](O)[C@@H]2O)n2ccc(=O)[nH]c2=O)[C@@H]1NC(C)=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 4 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline L-alanine Identifier CHEBI:57972 Charge 0 Formula C3H7NO2 InChIKey^help_outline QNAYBMKLOCPYGJ-REOHCLBHSA-N SMILES^help_outline C[C@H]([NH3+])C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 115 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline ATP Identifier CHEBI:30616 (Beilstein: 3581767) ^help_outline Charge -4 Formula C10H12N5O13P3 InChIKey^help_outline ZKHQWZAMYRWXGA-KQYNXXCUSA-J SMILES^help_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,301 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline UDP-N-acetyl-α-D-muramoyl-L-alanine Identifier CHEBI:83898 Charge -3 Formula C23H33N4O20P2 InChIKey^help_outline NTMMCWJNQNKACG-KBKUWGQMSA-K SMILES^help_outline C[C@H](NC(=O)[C@@H](C)O[C@H]1[C@H](O)[C@@H](CO)O[C@H](OP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H]([C@H](O)[C@@H]2O)n2ccc(=O)[nH]c2=O)[C@@H]1NC(C)=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 3 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline ADP Identifier CHEBI:456216 (Beilstein: 3783669) ^help_outline Charge -3 Formula C10H12N5O10P2 InChIKey^help_outline XTWYTFMLZFPYCI-KQYNXXCUSA-K SMILES^help_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 854 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline phosphate Identifier CHEBI:43474 Charge -2 Formula HO4P InChIKey^help_outline NBIIXXVUZAFLBC-UHFFFAOYSA-L SMILES^help_outline OP([O-])([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 1,020 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline H⁺ Identifier CHEBI:15378 Charge 1 Formula H InChIKey^help_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILES^help_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,717 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule

Cross-references

	RHEA:23372	RHEA:23373	RHEA:23374	RHEA:23375
Reaction direction	undefined	left-to-right	right-to-left	bidirectional
UniProtKB ^help_outline	38,555 proteins
EC numbers ^help_outline	6.3.2.8
Gene Ontology ^help_outline	GO:0008763
KEGG ^help_outline				R03193
MetaCyc ^help_outline		UDP-NACMUR-ALA-LIG-RXN
EcoCyc ^help_outline		UDP-NACMUR-ALA-LIG-RXN

Publications

Recent advances in the formation of the bacterial peptidoglycan monomer unit.

van Heijenoort J.

Nat Prod Rep 18:503-519(2001) [PubMed] [EuropePMC]

This publication is cited by 11 other entries.
Biochemical evidence for the formation of a covalent acyl-phosphate linkage between UDP-N-acetylmuramate and ATP in the Escherichia coli UDP-N-acetylmuramate:L-alanine ligase-catalyzed reaction.

Falk P.J., Ervin K.M., Volk K.S., Ho H.T.

In the peptidoglycan biosynthesis pathway in Escherichia coli, UDP-N-acetylmuramate:L-alanine ligase (MurC) catalyzes the formation of UDP-N-acetylmuramyl-L-alanine. A peptide bond is formed in this reaction and an ATP molecule is hydrolyzed concomitantly to produce ADP and orthophosphate. A bioch ... >> More

In the peptidoglycan biosynthesis pathway in Escherichia coli, UDP-N-acetylmuramate:L-alanine ligase (MurC) catalyzes the formation of UDP-N-acetylmuramyl-L-alanine. A peptide bond is formed in this reaction and an ATP molecule is hydrolyzed concomitantly to produce ADP and orthophosphate. A biochemical approach was devised to elucidate the role of ATP in this reaction. A fusion construct pMAL::murC was prepared and the maltose binding protein--UDP-N-acetylmuramyl:L-alanine ligase fusion protein was overproduced in E. coli/pMal::murC upon isopropyl beta-thiogalactoside induction. The fusion protein was purified to > or = 90% homogeneity by a single-step affinity chromatography. Subsequently, the ligase was released from the maltose binding protein by proteolytic cleavage and was purified to > or = 95% homogeneity by an ion-exchange chromatographic step. The kinetic parameters of the regenerated ligase are comparable to those of the purified native enzyme. This ligase was used to investigate the role that ATP plays in the formation of UDP-N-acetylmuramyl-L-alanine. UDP-N-acetyl[18O]muramate (with 18O located at the carboxylate function only) was prepared by a combination of chemical and enzymatic processes and was used as the substrate of the ligase to probe the reaction mechanism. All reaction products were purified and subjected to liquid chromatographic-mass spectrometric analysis. A single [18O]oxygen was transferred from UDP-N-acetyl[18O]muramate to the orthophosphate produced in the reaction. No [18O]oxygen was detected in the adenosine nucleotides recovered from the reaction. These results strongly suggest that this ligase-catalyzed peptide formation proceeds through an activated acyl-phosphate linkage during the reaction process. ATP therefore assists in the process of the peptide bond formation by donating its gamma-phosphoryl group to activate the carboxyl group of UDP-N-acetylmuramic acid. << Less

Biochemistry 35:1417-1422(1996) [PubMed] [EuropePMC]
ENZYMATIC SYNTHESIS OF THE PEPTIDE IN BACTERIAL URIDINE NUCLEOTIDES. IV. PURIFICATION AND PROPERTIES OF D-GLUTAMIC ACID-ADDING ENZYME.

NATHENSON S.G., STROMINGER J.L., ITO E.

J Biol Chem 239:1773-1776(1964) [PubMed] [EuropePMC]

RHEA:23372 UDP-N-acetyl-alpha-D-muramate + L-alanine + ATP = UDP-N-acetyl-alpha-D-muramoyl-L-alanine + ADP + phosphate + H(+)

Enzymes

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Cross-references

Publications

Recent advances in the formation of the bacterial peptidoglycan monomer unit.

Biochemical evidence for the formation of a covalent acyl-phosphate linkage between UDP-N-acetylmuramate and ATP in the Escherichia coli UDP-N-acetylmuramate:L-alanine ligase-catalyzed reaction.

ENZYMATIC SYNTHESIS OF THE PEPTIDE IN BACTERIAL URIDINE NUCLEOTIDES. IV. PURIFICATION AND PROPERTIES OF D-GLUTAMIC ACID-ADDING ENZYME.