2.0 2012-05-31 14:33:32 -0600 2015-06-03 17:19:33 -0600 ECMDB20214 M2MDB001060 Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-gamma-D-glutamyl-L-lysyl-D-alanyl-D-alanine Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-gamma-D-glutamyl-L-lysyl-D-alanyl-D-alanine is an intermediate in peptidoglycan synthesis. It is a substrate for the enzyme undecaprenyldiphospho-muramoylpentapeptide beta-N-acetylglucosaminyltransferase (murG). Peptidoglycan can be described as a fisherman's net that encloses bacteria. The mesh of the net is made of two segments of parallel, somewhat 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 very 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 lengthof 10 to 65 disaccharide units (depending on the organism). The peptidoglycan synthesis pathway starts in 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. Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-g-D-glutamyl-L-lysyl-D-alanyl-D-alanine Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-γ-D-glutamyl-L-lysyl-D-alanyl-D-alanine C94H156N8O26P2 1876.23 1875.060600228 4-{[(1S)-5-amino-1-{[(1R)-1-{[(1R)-1-carboxyethyl]-C-hydroxycarbonimidoyl}ethyl]-C-hydroxycarbonimidoyl}pentyl]-C-hydroxycarbonimidoyl}-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}butanoic acid 4-{[(1S)-5-amino-1-{[(1R)-1-{[(1R)-1-carboxyethyl]-C-hydroxycarbonimidoyl}ethyl]-C-hydroxycarbonimidoyl}pentyl]-C-hydroxycarbonimidoyl}-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}butanoic acid NCCCC[C@]([H])(N=C(O)CCC([H])(N=C(O)[C@@](C)([H])N=C(O)C(C)([H])O[C@@]1([H])[C@]([H])(O[C@]2([H])O[C@]([H])(CO)[C@](O)([H])[C@@](O)([H])[C@@]2([H])N=C(C)O)[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@]1([H])N=C(C)O)C(=O)O)C(O)=N[C@@](C)([H])C(O)=N[C@@](C)([H])C(=O)O InChI=1S/C94H156N8O26P2/c1-59(2)31-21-32-60(3)33-22-34-61(4)35-23-36-62(5)37-24-38-63(6)39-25-40-64(7)41-26-42-65(8)43-27-44-66(9)45-28-46-67(10)47-29-48-68(11)49-30-50-69(12)54-56-122-129(118,119)128-130(120,121)127-94-82(100-75(18)106)86(85(79(58-104)125-94)126-93-81(99-74(17)105)84(109)83(108)78(57-103)124-93)123-73(16)89(112)96-71(14)88(111)102-77(92(116)117)52-53-80(107)101-76(51-19-20-55-95)90(113)97-70(13)87(110)98-72(15)91(114)115/h31,33,35,37,39,41,43,45,47,49,54,70-73,76-79,81-86,93-94,103-104,108-109H,19-30,32,34,36,38,40,42,44,46,48,50-53,55-58,95H2,1-18H3,(H,96,112)(H,97,113)(H,98,110)(H,99,105)(H,100,106)(H,101,107)(H,102,111)(H,114,115)(H,116,117)(H,118,119)(H,120,121)/b60-33+,61-35+,62-37+,63-39+,64-41+,65-43+,66-45+,67-47+,68-49+,69-54+/t70-,71+,72-,73?,76+,77?,78-,79-,81-,82-,83-,84-,85-,86-,93+,94-/m1/s1 ULXTYUPMJXVUHQ-ONIGEKDKSA-N Inner membrane Membrane Outer membrane logp 3.45 ALOGPS logs -5.64 ALOGPS solubility 4.27e-03 g/l ALOGPS logp 14.52 ChemAxon pka_strongest_acidic 1.71 ChemAxon pka_strongest_basic 10.21 ChemAxon iupac 4-{[(1S)-5-amino-1-{[(1R)-1-{[(1R)-1-carboxyethyl]-C-hydroxycarbonimidoyl}ethyl]-C-hydroxycarbonimidoyl}pentyl]-C-hydroxycarbonimidoyl}-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}butanoic acid ChemAxon average_mass 1876.23 ChemAxon mono_mass 1875.060600228 ChemAxon smiles NCCCC[C@]([H])(N=C(O)CCC([H])(N=C(O)[C@@](C)([H])N=C(O)C(C)([H])O[C@@]1([H])[C@]([H])(O[C@]2([H])O[C@]([H])(CO)[C@](O)([H])[C@@](O)([H])[C@@]2([H])N=C(C)O)[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@]1([H])N=C(C)O)C(=O)O)C(O)=N[C@@](C)([H])C(O)=N[C@@](C)([H])C(=O)O ChemAxon formula C94H156N8O26P2 ChemAxon inchi InChI=1S/C94H156N8O26P2/c1-59(2)31-21-32-60(3)33-22-34-61(4)35-23-36-62(5)37-24-38-63(6)39-25-40-64(7)41-26-42-65(8)43-27-44-66(9)45-28-46-67(10)47-29-48-68(11)49-30-50-69(12)54-56-122-129(118,119)128-130(120,121)127-94-82(100-75(18)106)86(85(79(58-104)125-94)126-93-81(99-74(17)105)84(109)83(108)78(57-103)124-93)123-73(16)89(112)96-71(14)88(111)102-77(92(116)117)52-53-80(107)101-76(51-19-20-55-95)90(113)97-70(13)87(110)98-72(15)91(114)115/h31,33,35,37,39,41,43,45,47,49,54,70-73,76-79,81-86,93-94,103-104,108-109H,19-30,32,34,36,38,40,42,44,46,48,50-53,55-58,95H2,1-18H3,(H,96,112)(H,97,113)(H,98,110)(H,99,105)(H,100,106)(H,101,107)(H,102,111)(H,114,115)(H,116,117)(H,118,119)(H,120,121)/b60-33+,61-35+,62-37+,63-39+,64-41+,65-43+,66-45+,67-47+,68-49+,69-54+/t70-,71+,72-,73?,76+,77?,78-,79-,81-,82-,83-,84-,85-,86-,93+,94-/m1/s1 ChemAxon inchikey ULXTYUPMJXVUHQ-ONIGEKDKSA-N ChemAxon polar_surface_area 548.88 ChemAxon refractivity 507.48 ChemAxon polarizability 207.17 ChemAxon rotatable_bond_count 63 ChemAxon acceptor_count 31 ChemAxon donor_count 16 ChemAxon physiological_charge -4 ChemAxon formal_charge 0 ChemAxon Peptidoglycan biosynthesis ec00550 Metabolic pathways eco01100 Specdb::MsMs 26438 Specdb::MsMs 26439 Specdb::MsMs 26440 Specdb::MsMs 32996 Specdb::MsMs 32997 Specdb::MsMs 32998 23724490 C05893 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 UDP-N-acetylglucosamine--N-acetylmuramyl-(pentapeptide) pyrophosphoryl-undecaprenol N-acetylglucosamine transferase P17443 MURG_ECOLI murG http://ecmdb.ca/proteins/P17443.xml MurAc(oyl-L-Ala-D-gamma-Glu-L-Lys-D-Ala-D-Ala)-diphospho-undecaprenol + Uridine diphosphate-N-acetylglucosamine <> Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-gamma-D-glutamyl-L-lysyl-D-alanyl-D-alanine + Uridine 5'-diphosphate R05662 Uridine diphosphate-N-acetylglucosamine + Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol <> Uridine 5'-diphosphate + Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-gamma-D-glutamyl-L-lysyl-D-alanyl-D-alanine R05662 R06173 [GlcNAc-(1->4)-Mur2Ac(oyl-L-Ala-g-D-Glu-L-Lys-D-Ala-D-Ala)]n-diphosphoundecaprenol + Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-gamma-D-glutamyl-L-lysyl-D-alanyl-D-alanine <> Undecaprenyl diphosphate R06178 R06179