Identification
Name:Murein tetrapeptide carboxypeptidase
Synonyms:
  • LD-carboxypeptidase A
  • Muramoyltetrapeptide carboxypeptidase
Gene Name:ldcA
Enzyme Class:
Biological Properties
General Function:Defense mechanisms
Specific Function:Releases the terminal D-alanine residue from the cytoplasmic tetrapeptide recycling product L-Ala-gamma-D-Glu-meso- Dap-D-Ala. To a lesser extent, can also cleave D-Ala from murein derivatives containing the tetrapeptide, i.e. MurNAc-tetrapeptide, UDP-MurNAc-tetrapeptide, GlcNAc-MurNAc-tetrapeptide, and GlcNAc- anhMurNAc-tetrapeptide. Does not act on murein sacculi or cross- linked muropeptides. The tripeptides produced by the lcdA reaction can then be reused as peptidoglycan building blocks; lcdA is thereby involved in murein recycling. Is also essential for viability during stationary phase
Cellular Location:Cytoplasm
SMPDB Pathways:
KEGG Pathways:
EcoCyc Reactions:
1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb
Complex Reactions:
1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb
1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb
1.0Thumb+1.0Thumb1.0Thumb+1.0Thumb
1.0Thumb+1.0Thumb1.0GlcNAc-MurNAc-L-alanyl-gamma-D-glutamyl-meso-diaminopimelate+1.0Thumb
1.0GlcNAc-MurNAc-L-alanyl-gamma-D-glutamyl-meso-diaminopimelyl-D-alanine + 1.0Water → 1.0GlcNAc-MurNAc-L-alanyl-gamma-D-glutamyl-meso-diaminopimelate + 1.0D-Alanine
ReactionCard
Metabolites:
ECMDB IDNameView
ECMDB211111,6-Anhydrous-N-Acetylmuramyl-tetrapeptideMetaboCard
ECMDB211121,6-Anhydrous-N-Acetylmuramyl-tripeptideMetaboCard
ECMDB01310D-AlanineMetaboCard
ECMDB23146GlcNAc-MurNAc-L-alanyl-gamma-D-glutamyl-meso-diaminopimelyl-D-alanineMetaboCard
ECMDB20575L-Ala-gamma-D-Glu-DapMetaboCard
ECMDB00161L-AlanineMetaboCard
ECMDB21240L-alanine-D-glutamate-meso-2,6-diaminoheptanedioateMetaboCard
ECMDB21239L-Alanine-D-glutamate-meso-2,6-diaminoheptanedioate-D-alanineMetaboCard
ECMDB21249N-Acetyl-D-glucosamine(anhydrous)N-Acetylmuramyl-tetrapeptideMetaboCard
ECMDB21250N-Acetyl-D-glucosamine(anhydrous)N-Acetylmuramyl-tripeptideMetaboCard
ECMDB04170UDP-N-Acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminoheptanedioateMetaboCard
ECMDB20621UDP-N-Acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminoheptanedioate-D-alanineMetaboCard
ECMDB00494WaterMetaboCard
GO Classification:Not Available
Gene Properties
Blattner:b1192
Gene OrientationCounterclockwise
Centisome Percentage:26.76
Left Sequence End1241389
Right Sequence End1242303
Gene Sequence:
>915 bp
ATGCGTTTACCTATCTTCCTCGATACTGACCCCGGCATTGACGATGCCGTCGCCATTGCC
GCCGCGATTTTTGCACCCGAACTCGACCTGCAACTGATGACCACCGTCGCGGGTAATGTC
TCGGTTGAGAAAACTACCCGCAATGCCCTGCAACTGCTGCATTTCTGGAATGCGGAGATT
CCGCTCGCCCAAGGGGCCGCTGTGCCACTGGTACGCGCACCGCGTGATGCGGCATCTGTG
CACGGCGAATCGGGAATGGCTGGCTACGACTTTGTTGAGCACAACCGAAAGCCGCTCGGG
ATACCGGCGTTTCTGGCGATTCGGGATGCCCTGATGCGTGCACCAGAGCCTGTTACCCTG
GTGGCCATCGGCCCGTTAACCAATATTGCGCTGTTACTTTCACAATGCCCGGAATGCAAG
CCGTATATTCGCCGTCTGGTGATCATGGGTGGTTCTGCCGGACGCGGCAACTGTACGCCA
AACGCCGAGTTTAATATTGCTGCCGATCCAGAAGCTGCTGCCTGTGTCTTCCGCAGTGGT
ATTGAAATCGTCATGTGCGGTTTGGATGTCACCAATCAGGCAATATTAACTCCTGACTAT
CTCTCTACACTGCCGCAGTTAAACCGTACCGGGAAAATGCTTCACGCCCTGTTTAGCCAC
TACCGTAGCGGCAGTATGCAAAGCGGCTTGCGAATGCACGATCTCTGCGCCATCGCCTGG
CTGGTGCGCCCGGACCTGTTCACTCTCAAACCCTGTTTTGTGGCAGTGGAAACTCAGGGC
GAATTTACCTCAGGCACGACGGTGGTTGATATCGACGGTTGCCTGGGCAAGCCAGCCAAT
GTACAGGTGGCATTGGATCTGGATGTGAAAGGCTTCCAGCAGTGGGTGGCTGAGGTGCTG
GCTCTGGCGTCGTAA
Protein Properties
Pfam Domain Function:
Protein Residues:304
Protein Molecular Weight:33567
Protein Theoretical pI:7
Signaling Regions:
  • None
Transmembrane Regions:
  • None
Protein Sequence:
>Murein tetrapeptide carboxypeptidase
MSLFHLIAPSGYCIKQHAALRGIQRLTDAGHQVNNVEVIARRCERFAGTETERLEDLNSL
ARLTTPNTIVLAVRGGYGASRLLADIDWQALVARQQHDPLLICGHSDFTAIQCGLLAHGN
VITFSGPMLVANFGADELNAFTEHHFWLALRNETFTIEWQGEGPTCRAEGTLWGGNLAML
ISLIGTPWMPKIENGILVLEDINEHPFRVERMLLQLYHAGILPRQKAIILGSFSGSTPND
YDAGYNLESVYAFLRSRLSIPLITGLDFGHEQRTVTLPLGAHAILNNTREGTQLTISGHP
VLKM
References
External Links:
ResourceLink
Uniprot ID:P76008
Uniprot Name:LDCA_ECOLI
GenBank Gene ID:AP009048
Genebank Protein ID:21321912
Ecogene ID:EG13898
Ecocyc:EG13898
ColiBase:b1192
Kegg Gene:b1192
EchoBASE ID:EB3657
CCDB:LDCA_ECOLI
BacMap:16129155
General Reference:
  • Blattner, F. R., Plunkett, G. 3rd, Bloch, C. A., Perna, N. T., Burland, V., Riley, M., Collado-Vides, J., Glasner, J. D., Rode, C. K., Mayhew, G. F., Gregor, J., Davis, N. W., Kirkpatrick, H. A., Goeden, M. A., Rose, D. J., Mau, B., Shao, Y. (1997). "The complete genome sequence of Escherichia coli K-12." Science 277:1453-1462. Pubmed: 9278503
  • Hayashi, K., Morooka, N., Yamamoto, Y., Fujita, K., Isono, K., Choi, S., Ohtsubo, E., Baba, T., Wanner, B. L., Mori, H., Horiuchi, T. (2006). "Highly accurate genome sequences of Escherichia coli K-12 strains MG1655 and W3110." Mol Syst Biol 2:2006.0007. Pubmed: 16738553
  • Oshima, T., Aiba, H., Baba, T., Fujita, K., Hayashi, K., Honjo, A., Ikemoto, K., Inada, T., Itoh, T., Kajihara, M., Kanai, K., Kashimoto, K., Kimura, S., Kitagawa, M., Makino, K., Masuda, S., Miki, T., Mizobuchi, K., Mori, H., Motomura, K., Nakamura, Y., Nashimoto, H., Nishio, Y., Saito, N., Horiuchi, T., et, a. l. .. (1996). "A 718-kb DNA sequence of the Escherichia coli K-12 genome corresponding to the 12.7-28.0 min region on the linkage map." DNA Res 3:137-155. Pubmed: 8905232
  • Park, J. T., Uehara, T. (2008). "How bacteria consume their own exoskeletons (turnover and recycling of cell wall peptidoglycan)." Microbiol Mol Biol Rev 72:211-27, table of contents. Pubmed: 18535144
  • Templin, M. F., Ursinus, A., Holtje, J. V. (1999). "A defect in cell wall recycling triggers autolysis during the stationary growth phase of Escherichia coli." EMBO J 18:4108-4117. Pubmed: 10428950