Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyMurCD 8058589 4000154 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyMurD catalytic domain-like 8058591 3000107 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyMurCD N-terminal domain 8058590 3000082 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyMurD peptide-binding domain-like 8091455 3001290 SCOP2 (2022-06-29)
BSCOP2B SuperfamilyMurD peptide-binding domain-like 8091455 3001290 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyMurD catalytic domain-like 8058591 3000107 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyMurCD N-terminal domain 8058590 3000082 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AMur_ligasee1p3dA1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: MurCD/PglD N-terminal domain-likeF: Mur_ligaseECOD (1.6)
AMur_ligase_Me1p3dA2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: Mur_ligase_MECOD (1.6)
AMur_ligase_Ce1p3dA3 A: a/b three-layered sandwichesX: MurD-like peptide ligases, peptide-binding domain (From Topology)H: MurD-like peptide ligases, peptide-binding domain (From Topology)T: MurD-like peptide ligases, peptide-binding domainF: Mur_ligase_CECOD (1.6)
BMur_ligasee1p3dB1 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: MurCD/PglD N-terminal domain-likeF: Mur_ligaseECOD (1.6)
BMur_ligase_Me1p3dB2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: Mur_ligase_MECOD (1.6)
BMur_ligase_Ce1p3dB3 A: a/b three-layered sandwichesX: MurD-like peptide ligases, peptide-binding domain (From Topology)H: MurD-like peptide ligases, peptide-binding domain (From Topology)T: MurD-like peptide ligases, peptide-binding domainF: Mur_ligase_CECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF08245Mur ligase middle domain (Mur_ligase_M)Mur ligase middle domain- Domain
A, B
PF02875Mur ligase, glutamate ligase domain (Mur_ligase_C)Mur ligase, glutamate ligase domainThis entry contains a number of related ligase enzymes which have EC numbers 6.3.2.* which includes: MurC (Swiss:P17952), MurD (Swiss:P14900), MurE (Swiss:P22188), MurF (Swiss:P11880), Mpl (Swiss:P37773) and FolC (Swiss:P08192). MurC, MurD, MurE and ...This entry contains a number of related ligase enzymes which have EC numbers 6.3.2.* which includes: MurC (Swiss:P17952), MurD (Swiss:P14900), MurE (Swiss:P22188), MurF (Swiss:P11880), Mpl (Swiss:P37773) and FolC (Swiss:P08192). MurC, MurD, MurE and MurF catalyse consecutive steps in the synthesis of peptidoglycan. Peptidoglycan consists of a sheet of two sugar derivatives, with one of these N-acetylmuramic acid attaching to a small pentapeptide. The pentapeptide is is made of L-alanine, D-glutamic acid, Meso-diaminopimelic acid and D-alanyl alanine. The peptide moiety is synthesised by successively adding these amino acids to UDP-N-acetylmuramic acid. MurC transfers the L-alanine, MurD transfers the D-glutamate, MurE transfers the diaminopimelic acid, and MurF transfers the D-alanyl alanine [1,3,4]. This entry also includes folylpolyglutamate synthase that transfers glutamate to folylpolyglutamate and cyanophycin synthetase that catalyses the biosynthesis of the cyanobacterial reserve material multi-L-arginyl-poly-L-aspartate (cyanophycin) [2].
Domain
A, B
PF01225Mur ligase family, catalytic domain (Mur_ligase)Mur ligase family, catalytic domainThis family contains a number of related ligase enzymes which have EC numbers 6.3.2.*. This family includes: MurC (Swiss:P17952), MurD (Swiss:P14900), MurE (Swiss:P22188), MurF (Swiss:P11880), Mpl (Swiss:P37773) and FolC (Swiss:P08192). MurC, MurD, ...This family contains a number of related ligase enzymes which have EC numbers 6.3.2.*. This family includes: MurC (Swiss:P17952), MurD (Swiss:P14900), MurE (Swiss:P22188), MurF (Swiss:P11880), Mpl (Swiss:P37773) and FolC (Swiss:P08192). MurC, MurD, Mure and MurF catalyse consecutive steps in the synthesis of peptidoglycan. Peptidoglycan consists of a sheet of two sugar derivatives, with one of these N-acetylmuramic acid attaching to a small pentapeptide. The pentapeptide is is made of L-alanine, D-glutamic acid, Meso-diaminopimelic acid and D-alanyl alanine. The peptide moiety is synthesised by successively adding these amino acids to UDP-N-acetylmuramic acid. MurC transfers the L-alanine, MurD transfers the D-glutamate, MurE transfers the diaminopimelic acid, and MurF transfers the D-alanyl alanine. This family also includes Folylpolyglutamate synthase that transfers glutamate to folylpolyglutamate.
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
UDP-N-acetylmuramate--alanine ligase

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
UDP-N-acetylmuramate---L-alanine ligase  M-CSA #876

UDP-N-acetylmuramate-alanine ligase (MurC) is an essential, cytoplasmic peptidoglycan biosynthetic enzyme that catalyses the ATP-dependent ligation of L-alanine (Ala) and UDP-N-acetylmuramic acid (UNAM) to form UDP-N-acetylmuramyl-L-alanine (UNAM-Ala). This reaction is part of the biosynthesis of cell walls in bacteria. MurC is a nonribosomal peptide ligase which utilises ATP to form an amide bond between L-alanine and UNAM. Mechanistic studies on the Escherichia coli enzyme demonstrated that the enzyme-catalysed reaction proceeds through an acyl phosphate UNAM intermediate prior to L-alanine addition.

Defined by 3 residues: LYS:A-129THR:A-130GLU:A-173
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