2.0 2012-05-31 14:33:26 -0600 2015-06-03 17:19:33 -0600 ECMDB20212 M2MDB001058 Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine is an intermediate in peptidoglycan synthesis. It is a substrate for the enzyme undecaprenyldiphospho-muramoylpentapeptide beta-N-acetylglucosaminyltransferase (murG). Peptidoglycan is best described as a fisherman net. The mesh of the net is made of two segments of parallel, rather inextensible glycan threads, held together by two small elastic peptide crosslinks allowing the net to expand or shrink. The glycan moiety of the peptidoglycan is remarkably uniform among all bacteria, and is made up of alternating β-1,4-linked N-acetylglucosamine and N-acetyl muramate residues, with an average chain length (in different organisms) of 10 to 65 disaccharide units. The peptidoglycan synthesis pathway starts at the cytoplasm, where in six steps the peptidoglycan precursor a UDP-N-acetylmuramoyl-pentapeptide is synthesized. This precursor is then attached to the memberane acceptor all-trans-undecaprenyl phosphate, generating a N-acetylmuramoyl-pentapeptide-diphosphoundecaprenol, also known as lipid I. Another transferase then adds UDP-N-acetyl-α-D-glucosamine, yielding the complete monomeric unit a lipid II, also known as lipid II. This final lipid intermediate is transferred by an as yet unknown mechanism through the membrane. The peptidoglycan monomers are then polymerized on the outside surface by glycosyltransferases, which form the linear glycan chains, and transpeptidases, which catalyze the formation of peptide crosslinks. Peptide crosslinks form between different parts of the peptides depending on the organism. For example, in Mycobacteria and in E. coli most links form between the carboxyl group of the penultimate D-alanine (residue 4) of one peptide to the amino group at the D-center of meso-diaminopimelate (residue 3) of an adjacent peptide of a second glycan chain (as in E. coli). The crosslinking reaction is catalyzed by transpeptidases and involves the cleavage of the D-alanyl-D-alanine bond of the donor peptide, providing the energy to drive the reaction. As a result, the peptides in the peptidoglycan polymers are one or two amino acids shorter than the peptides in the monomers. UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-6-carboxy-L-lysyl-D-alanyl-D-alanine UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminoheptanedioate- D-alanyl-D-alanine UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine UDP-N-Acetylmuramoyl-L-alanyl-D-glutamyl-6-carboxy-L-lysyl-D-alanyl-D-alanine UDP-N-Acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminoheptanedioate- D-alanyl-D-alanine UDP-n-Acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminoheptanedioic acid- D-alanyl-D-alanine UDP-N-Acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminoheptanedioic acid- D-alanyl-D-alanine UDP-N-Acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine UnPPMurNAcPentaPepNAc C95H156N8O28P2 1920.2395 1919.050429472 (2S,6R)-2-amino-6-{[(2R)-4-carboxy-2-{[(2S)-2-[(2-{[(2R,3S,4R,5R,6R)-3-{[(2S,3R,4R,5S,6R)-4,5-dihydroxy-3-[(1-hydroxyethylidene)amino]-6-(hydroxymethyl)oxan-2-yl]oxy}-6-{[hydroxy({[hydroxy({[(2E,6E,10E,14E,18E,22E,26E,30E,34E,38E)-3,7,11,15,19,23,27,31,35,39,43-undecamethyltetratetraconta-2,6,10,14,18,22,26,30,34,38,42-undecaen-1-yl]oxy})phosphoryl]oxy})phosphoryl]oxy}-5-[(1-hydroxyethylidene)amino]-2-(hydroxymethyl)oxan-4-yl]oxy}-1-hydroxypropylidene)amino]-1-hydroxypropylidene]amino}-1-hydroxybutylidene]amino}-6-{[(1R)-1-{[(1R)-1-carboxyethyl]-C-hydroxycarbonimidoyl}ethyl]-C-hydroxycarbonimidoyl}hexanoic acid (2S,6R)-2-amino-6-{[(2R)-4-carboxy-2-{[(2S)-2-[(2-{[(2R,3S,4R,5R,6R)-3-{[(2S,3R,4R,5S,6R)-4,5-dihydroxy-3-[(1-hydroxyethylidene)amino]-6-(hydroxymethyl)oxan-2-yl]oxy}-6-{[hydroxy({hydroxy[(2E,6E,10E,14E,18E,22E,26E,30E,34E,38E)-3,7,11,15,19,23,27,31,35,39,43-undecamethyltetratetraconta-2,6,10,14,18,22,26,30,34,38,42-undecaen-1-yl]oxyphosphoryl}oxy)phosphoryl]oxy}-5-[(1-hydroxyethylidene)amino]-2-(hydroxymethyl)oxan-4-yl]oxy}-1-hydroxypropylidene)amino]-1-hydroxypropylidene]amino}-1-hydroxybutylidene]amino}-6-{[(1R)-1-{[(1R)-1-carboxyethyl]-C-hydroxycarbonimidoyl}ethyl]-C-hydroxycarbonimidoyl}hexanoic acid OC[C@@]1([H])O[C@@]([H])(O[C@]2([H])[C@@]([H])(CO)O[C@]([H])(OP(O)(=O)OP(O)(=O)OC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CCC=C(C)C)[C@]([H])(N=C(C)O)[C@@]2([H])OC(C)([H])C(O)=N[C@](C)([H])C(O)=N[C@]([H])(CCC(=O)O)C(O)=N[C@]([H])(CCC[C@@](N)([H])C(=O)O)C(O)=N[C@@](C)([H])C(O)=N[C@@](C)([H])C(=O)O)[C@]([H])(N=C(C)O)[C@](O)([H])[C@@]1(O)[H] InChI=1S/C95H156N8O28P2/c1-58(2)30-19-31-59(3)32-20-33-60(4)34-21-35-61(5)36-22-37-62(6)38-23-39-63(7)40-24-41-64(8)42-25-43-65(9)44-26-45-66(10)46-27-47-67(11)48-28-49-68(12)54-55-125-132(121,122)131-133(123,124)130-95-82(101-74(18)107)86(85(79(57-105)128-95)129-94-81(100-73(17)106)84(111)83(110)78(56-104)127-94)126-72(16)89(114)97-70(14)88(113)102-77(52-53-80(108)109)91(116)103-76(51-29-50-75(96)93(119)120)90(115)98-69(13)87(112)99-71(15)92(117)118/h30,32,34,36,38,40,42,44,46,48,54,69-72,75-79,81-86,94-95,104-105,110-111H,19-29,31,33,35,37,39,41,43,45,47,49-53,55-57,96H2,1-18H3,(H,97,114)(H,98,115)(H,99,112)(H,100,106)(H,101,107)(H,102,113)(H,103,116)(H,108,109)(H,117,118)(H,119,120)(H,121,122)(H,123,124)/b59-32+,60-34+,61-36+,62-38+,63-40+,64-42+,65-44+,66-46+,67-48+,68-54+/t69-,70+,71-,72?,75+,76-,77-,78-,79-,81-,82-,83-,84-,85-,86-,94+,95-/m1/s1 CEHJYQJVVYPVFY-PXJHMNRSSA-N Membrane logp 3.12 ALOGPS logs -5.54 ALOGPS solubility 5.48e-03 g/l ALOGPS logp 15.46 ChemAxon pka_strongest_acidic 1.72 ChemAxon iupac (2S,6R)-2-amino-6-{[(2R)-4-carboxy-2-{[(2S)-2-[(2-{[(2R,3S,4R,5R,6R)-3-{[(2S,3R,4R,5S,6R)-4,5-dihydroxy-3-[(1-hydroxyethylidene)amino]-6-(hydroxymethyl)oxan-2-yl]oxy}-6-{[hydroxy({[hydroxy({[(2E,6E,10E,14E,18E,22E,26E,30E,34E,38E)-3,7,11,15,19,23,27,31,35,39,43-undecamethyltetratetraconta-2,6,10,14,18,22,26,30,34,38,42-undecaen-1-yl]oxy})phosphoryl]oxy})phosphoryl]oxy}-5-[(1-hydroxyethylidene)amino]-2-(hydroxymethyl)oxan-4-yl]oxy}-1-hydroxypropylidene)amino]-1-hydroxypropylidene]amino}-1-hydroxybutylidene]amino}-6-{[(1R)-1-{[(1R)-1-carboxyethyl]-C-hydroxycarbonimidoyl}ethyl]-C-hydroxycarbonimidoyl}hexanoic acid ChemAxon average_mass 1920.2395 ChemAxon mono_mass 1919.050429472 ChemAxon smiles OC[C@@]1([H])O[C@@]([H])(O[C@]2([H])[C@@]([H])(CO)O[C@]([H])(OP(O)(=O)OP(O)(=O)OC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CC\C([H])=C(/C)CCC=C(C)C)[C@]([H])(N=C(C)O)[C@@]2([H])OC(C)([H])C(O)=N[C@](C)([H])C(O)=N[C@]([H])(CCC(=O)O)C(O)=N[C@]([H])(CCC[C@@](N)([H])C(=O)O)C(O)=N[C@@](C)([H])C(O)=N[C@@](C)([H])C(=O)O)[C@]([H])(N=C(C)O)[C@](O)([H])[C@@]1(O)[H] ChemAxon formula C95H156N8O28P2 ChemAxon inchi InChI=1S/C95H156N8O28P2/c1-58(2)30-19-31-59(3)32-20-33-60(4)34-21-35-61(5)36-22-37-62(6)38-23-39-63(7)40-24-41-64(8)42-25-43-65(9)44-26-45-66(10)46-27-47-67(11)48-28-49-68(12)54-55-125-132(121,122)131-133(123,124)130-95-82(101-74(18)107)86(85(79(57-105)128-95)129-94-81(100-73(17)106)84(111)83(110)78(56-104)127-94)126-72(16)89(114)97-70(14)88(113)102-77(52-53-80(108)109)91(116)103-76(51-29-50-75(96)93(119)120)90(115)98-69(13)87(112)99-71(15)92(117)118/h30,32,34,36,38,40,42,44,46,48,54,69-72,75-79,81-86,94-95,104-105,110-111H,19-29,31,33,35,37,39,41,43,45,47,49-53,55-57,96H2,1-18H3,(H,97,114)(H,98,115)(H,99,112)(H,100,106)(H,101,107)(H,102,113)(H,103,116)(H,108,109)(H,117,118)(H,119,120)(H,121,122)(H,123,124)/b59-32+,60-34+,61-36+,62-38+,63-40+,64-42+,65-44+,66-46+,67-48+,68-54+/t69-,70+,71-,72?,75+,76-,77-,78-,79-,81-,82-,83-,84-,85-,86-,94+,95-/m1/s1 ChemAxon inchikey CEHJYQJVVYPVFY-PXJHMNRSSA-N ChemAxon polar_surface_area 586.18 ChemAxon refractivity 513.31 ChemAxon polarizability 210.69 ChemAxon rotatable_bond_count 64 ChemAxon acceptor_count 33 ChemAxon donor_count 17 ChemAxon physiological_charge -5 ChemAxon formal_charge 0 ChemAxon Peptidoglycan biosynthesis ec00550 UDP-N-acetylmuramoyl-pentapeptide biosynthesis III (meso-DAP-containing) PWY-6387 peptidoglycan biosynthesis I (meso-diaminopimelate containing) PEPTIDOGLYCANSYN-PWY Specdb::MsMs 26057 Specdb::MsMs 26058 Specdb::MsMs 26059 Specdb::MsMs 32615 Specdb::MsMs 32616 Specdb::MsMs 32617 23724492 C05898 C1 Keseler, I. M., Collado-Vides, J., Santos-Zavaleta, A., Peralta-Gil, M., Gama-Castro, S., Muniz-Rascado, L., Bonavides-Martinez, C., Paley, S., Krummenacker, M., Altman, T., Kaipa, P., Spaulding, A., Pacheco, J., Latendresse, M., Fulcher, C., Sarker, M., Shearer, A. G., Mackie, A., Paulsen, I., Gunsalus, R. P., Karp, P. D. (2011). "EcoCyc: a comprehensive database of Escherichia coli biology." Nucleic Acids Res 39:D583-D590. 21097882 Kanehisa, M., Goto, S., Sato, Y., Furumichi, M., Tanabe, M. (2012). "KEGG for integration and interpretation of large-scale molecular data sets." Nucleic Acids Res 40:D109-D114. 22080510 Penicillin-binding protein 1A P02918 PBPA_ECOLI mrcA http://ecmdb.ca/proteins/P02918.xml Penicillin-binding protein 1B P02919 PBPB_ECOLI mrcB http://ecmdb.ca/proteins/P02919.xml Peptidoglycan synthase ftsI P0AD68 FTSI_ECOLI ftsI http://ecmdb.ca/proteins/P0AD68.xml UDP-N-acetylglucosamine--N-acetylmuramyl-(pentapeptide) pyrophosphoryl-undecaprenol N-acetylglucosamine transferase P17443 MURG_ECOLI murG http://ecmdb.ca/proteins/P17443.xml Penicillin-binding protein 1C P76577 PBPC_ECOLI pbpC http://ecmdb.ca/proteins/P76577.xml Virulence factor mviN homolog P0AF16 MVIN_ECOLI mviN http://ecmdb.ca/proteins/P0AF16.xml Virulence factor mviN homolog P0AF16 MVIN_ECOLI mviN http://ecmdb.ca/proteins/P0AF16.xml Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine + two linked disacharide pentapeptide murein units (uncrosslinked, middle of chain) > Hydrogen ion + Undecaprenyl diphosphate + three linked disacharide pentapeptide murein units (uncrosslinked, middle of chain) 2 Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine >2 Hydrogen ion +2 Undecaprenyl diphosphate + two linked disacharide pentapeptide murein units (uncrosslinked, middle of chain) Uridine diphosphate-N-acetylglucosamine + Undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine > Hydrogen ion + Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine + Uridine 5'-diphosphate R05032 Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine + [GlcNAc-(1->4)-Mur2Ac(oyl-L-Ala-g-D-Glu-A2pm-D-Ala-D-Ala)]n-diphosphoundecaprenol <> di-trans,poly-cis-Undecaprenyl diphosphate + [GlcNAc-(1->4)-Mur2Ac(oyl-L-Ala-g-D-Glu-A2pm-D-Ala-D-Ala)]n-diphosphoundecaprenol R04519 Undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine + Uridine diphosphate-N-acetylglucosamine <> Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine + Uridine 5'-diphosphate R05032