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Entry version 110 (13 Nov 2019)
Sequence version 1 (20 Dec 2005)
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Protein

Murein DD-endopeptidase MepM

Gene

mepM

Organism
Escherichia coli (strain K12)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

A murein DD-endopeptidase with specificity for D-Ala-meso-diaminopimelic acid (mDAP) cross-links. Its role is probably to cleave D-Ala-mDAP cross-links to allow insertion of new glycans and thus cell wall expansion. Functionally redundant with MepM and MepH. Partially suppresses an mepS disruption mutant.1 Publication

<p>This subsection of the ‘Function’ section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

Zn2+1 Publication, Ca2+1 PublicationNote: Zinc, although calcium also allows some activity.1 Publication

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: cell wall polysaccharide biosynthesis

This protein is involved in the pathway cell wall polysaccharide biosynthesis, which is part of Cell wall biogenesis.
View all proteins of this organism that are known to be involved in the pathway cell wall polysaccharide biosynthesis and in Cell wall biogenesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi314ZincSequence analysis1

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionHydrolase, Metalloprotease, Protease
Biological processCell wall biogenesis/degradation
LigandMetal-binding, Zinc

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
EcoCyc:EG10013-MONOMER
ECOL316407:JW5304-MONOMER
MetaCyc:EG10013-MONOMER

UniPathway: a resource for the exploration and annotation of metabolic pathways

More...
UniPathwayi
UPA00963

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Murein DD-endopeptidase MepM (EC:3.4.24.-)
Alternative name(s):
Murein hydrolase MepM
ORFU
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:mepM
Synonyms:yebA
Ordered Locus Names:b1856, JW5304
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiEscherichia coli (strain K12)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri83333 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000000318 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome
  • UP000000625 Componenti: Chromosome

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the subcellular compartment where each non-membrane region of a membrane-spanning protein is found.<p><a href='/help/topo_dom' target='_top'>More...</a></p>Topological domaini1 – 20CytoplasmicSequence analysisAdd BLAST20
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei21 – 40HelicalSequence analysisAdd BLAST20
Topological domaini41 – 440PeriplasmicSequence analysisAdd BLAST400

GO - Cellular componenti

Keywords - Cellular componenti

Cell inner membrane, Cell membrane, Membrane

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

<p>This subsection of the ‘Pathology and Biotech’ section describes the in vivo effects caused by ablation of the gene (or one or more transcripts) coding for the protein described in the entry. This includes gene knockout and knockdown, provided experiments have been performed in the context of a whole organism or a specific tissue, and not at the single-cell level.<p><a href='/help/disruption_phenotype' target='_top'>More...</a></p>Disruption phenotypei

Cells are shorter in a single mutant, while triple envC-nlpD-mepM disruptions have defects in septation and cell separation and form long filaments (15-fold longer) and further yet by the quadruple disruption mutant (envC-nlpD-mepM-ygeR, over 21-fold longer). Quadruple mutants are less sensitive to ampicillin lysis (PubMed:19525345). A triple mepS-mepH-mepM mutant is inviable, whereas a double mepS-mepM will grow on a nutrient-poor medium but not on a rich medium, suggesting the 3 endopeptidases are functionally redundant in vivo. Depletion experiments of the double or triple mutants lead to cell lysis, as well as significantly decreased incorporation of mDAP into peptidogylcan sacculi and increased amounts of the enzyme's substrate (Tetra-Tetra-anhydro muropeptide) (PubMed:23062283).2 Publications

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000268261 – 440Murein DD-endopeptidase MepMAdd BLAST440

Proteomic databases

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P0AFS9

PRoteomics IDEntifications database

More...
PRIDEi
P0AFS9

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...
BioGridi
4260352, 385 interactors

STRING: functional protein association networks

More...
STRINGi
511145.b1856

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P0AFS9

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini96 – 141LysMPROSITE-ProRule annotationAdd BLAST46

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the peptidase M23B family.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4105DR5 Bacteria
COG0739 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000281149

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P0AFS9

KEGG Orthology (KO)

More...
KOi
K19304

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P0AFS9

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00118 LysM, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.70.70.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR011055 Dup_hybrid_motif
IPR018392 LysM_dom
IPR013731 OapA_N
IPR016047 Peptidase_M23

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01476 LysM, 1 hit
PF08525 OapA_N, 1 hit
PF01551 Peptidase_M23, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00257 LysM, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF51261 SSF51261, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51782 LYSM, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P0AFS9-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MQQIARSVAL AFNNLPRPHR VMLGSLTVLT LAVAVWRPYV YHRDATPIVK
60 70 80 90 100
TIELEQNEIR SLLPEASEPI DQAAQEDEAI PQDELDDKIA GEAGVHEYVV
110 120 130 140 150
STGDTLSSIL NQYGIDMGDI TQLAAADKEL RNLKIGQQLS WTLTADGELQ
160 170 180 190 200
RLTWEVSRRE TRTYDRTAAN GFKMTSEMQQ GEWVNNLLKG TVGGSFVASA
210 220 230 240 250
RNAGLTSAEV SAVIKAMQWQ MDFRKLKKGD EFAVLMSREM LDGKREQSQL
260 270 280 290 300
LGVRLRSEGK DYYAIRAEDG KFYDRNGTGL AKGFLRFPTA KQFRISSNFN
310 320 330 340 350
PRRTNPVTGR VAPHRGVDFA MPQGTPVLSV GDGEVVVAKR SGAAGYYVAI
360 370 380 390 400
RHGRSYTTRY MHLRKILVKP GQKVKRGDRI ALSGNTGRST GPHLHYEVWI
410 420 430 440
NQQAVNPLTA KLPRTEGLTG SDRREFLAQA KEIVPQLRFD
Length:440
Mass (Da):49,058
Last modified:December 20, 2005 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i30431410A5B1A7F7
GO

<p>This subsection of the ‘Sequence’ section reports difference(s) between the protein sequence shown in the UniProtKB entry and other available protein sequences derived from the same gene.<p><a href='/help/sequence_caution' target='_top'>More...</a></p>Sequence cautioni

The sequence AAA81029 differs from that shown. Reason: Erroneous initiation. Truncated N-terminus.Curated

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti90A → P in AAA81029 (Ref. 4) Curated1
Sequence conflicti93A → T in AAA81029 (Ref. 4) Curated1
Sequence conflicti121T → S in AAA81029 (Ref. 4) Curated1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
U00096 Genomic DNA Translation: AAC74926.2
AP009048 Genomic DNA Translation: BAA15664.2
U38702 Genomic DNA Translation: AAA81029.1 Different initiation.
M77039 Genomic DNA Translation: AAA24180.1

NCBI Reference Sequences

More...
RefSeqi
NP_416370.2, NC_000913.3
WP_001184045.1, NZ_STEB01000009.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC74926; AAC74926; b1856
BAA15664; BAA15664; BAA15664

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
946376

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecj:JW5304
eco:b1856

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|1411691.4.peg.392

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U00096 Genomic DNA Translation: AAC74926.2
AP009048 Genomic DNA Translation: BAA15664.2
U38702 Genomic DNA Translation: AAA81029.1 Different initiation.
M77039 Genomic DNA Translation: AAA24180.1
RefSeqiNP_416370.2, NC_000913.3
WP_001184045.1, NZ_STEB01000009.1

3D structure databases

SMRiP0AFS9
ModBaseiSearch...

Protein-protein interaction databases

BioGridi4260352, 385 interactors
STRINGi511145.b1856

Proteomic databases

PaxDbiP0AFS9
PRIDEiP0AFS9

Genome annotation databases

EnsemblBacteriaiAAC74926; AAC74926; b1856
BAA15664; BAA15664; BAA15664
GeneIDi946376
KEGGiecj:JW5304
eco:b1856
PATRICifig|1411691.4.peg.392

Organism-specific databases

EchoBASE - an integrated post-genomic database for E. coli

More...
EchoBASEi
EB0013

Phylogenomic databases

eggNOGiENOG4105DR5 Bacteria
COG0739 LUCA
HOGENOMiHOG000281149
InParanoidiP0AFS9
KOiK19304
PhylomeDBiP0AFS9

Enzyme and pathway databases

UniPathwayiUPA00963
BioCyciEcoCyc:EG10013-MONOMER
ECOL316407:JW5304-MONOMER
MetaCyc:EG10013-MONOMER

Miscellaneous databases

Protein Ontology

More...
PROi
PR:P0AFS9

Family and domain databases

CDDicd00118 LysM, 1 hit
Gene3Di2.70.70.10, 1 hit
InterProiView protein in InterPro
IPR011055 Dup_hybrid_motif
IPR018392 LysM_dom
IPR013731 OapA_N
IPR016047 Peptidase_M23
PfamiView protein in Pfam
PF01476 LysM, 1 hit
PF08525 OapA_N, 1 hit
PF01551 Peptidase_M23, 1 hit
SMARTiView protein in SMART
SM00257 LysM, 1 hit
SUPFAMiSSF51261 SSF51261, 1 hit
PROSITEiView protein in PROSITE
PS51782 LYSM, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiMEPM_ECOLI
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P0AFS9
Secondary accession number(s): O07981, P24204, P76283
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 20, 2005
Last sequence update: December 20, 2005
Last modified: November 13, 2019
This is version 110 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Peptidase families
    Classification of peptidase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families
  3. Escherichia coli
    Escherichia coli (strain K12): entries and cross-references to EcoGene
  4. PATHWAY comments
    Index of metabolic and biosynthesis pathways
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