sporangiospore maturation cell wall hydrolase GsmA. The peptidoglycan-hydrolyzing enzyme GsmA occurs in some sporangia-forming members of the Actinobacteria, such as Actinoplanes missouriensis, and is required for proper separation of spores. GsmA proteins have one or two SH3 domains N-terminal to the hydrolase domain.

Flagellum-specific peptidoglycan hydrolase FlgJ [Cell wall/membrane/envelope biogenesis, Cell motility].

Murein DD-endopeptidase MepM and murein hydrolase activator NlpD, contain LysM domain [Cell wall/membrane/envelope biogenesis].

M23 family metallopeptidase, also known as beta-lytic metallopeptidase, and similar proteins. This model describes the metallopeptidase M23 family, which includes beta-lytic metallopeptidase and lysostaphin. Members of this family are zinc endopeptidases that lyse bacterial cell wall peptidoglycans; they cleave either the N-acylmuramoyl-Ala bond between the cell wall peptidoglycan and the cross-linking peptide (e.g. beta-lytic endopeptidase) or a bond within the cross-linking peptide (e.g. stapholysin, and lysostaphin). Beta-lytic metallopeptidase, formerly known as beta-lytic protease, has a preference for cleavage of Gly-X bonds and favors hydrophobic or apolar residues on either side. It inhibits growth of sensitive organisms and may potentially serve as an antimicrobial agent. Lysostaphin, produced by Staphylococcus genus, cleaves pentaglycine cross-bridges of cell wall peptidoglycan, acting as autolysins to maintain cell wall metabolism or as toxins and weapons against competing strains. Staphylolysin (also known as LasA) is implicated in a range of processes related to Pseudomonas virulence, including stimulating shedding of the ectodomain of cell surface heparan sulphate proteoglycan syndecan-1, and elastin degradation in connective tissue. Its active site is less constricted and contains a five-coordinate zinc ion with trigonal bipyramidal geometry and two metal-bound water molecules, possibly contributing to its activity against a wider range of substrates than those used by related lytic enzymes, consistent with its multiple roles in Pseudomonas virulence. The family includes members that do not appear to have the conserved zinc-binding site and might be lipoproteins lacking proteolytic activity.

Mannosyl-glycoprotein endo-beta-N-acetylglucosaminidase. This family includes Mannosyl-glycoprotein endo-beta-N-acetylglucosaminidase EC:3.2.1.96. As well as the flageller protein J that has been shown to hydrolyze peptidoglycan.

ChainA, Peptidase M23 [Campylobacter jejuni],6JMY_A Chain A, Peptidase M23 [Campylobacter jejuni],6KV1_A Chain A, Peptidase M23 [Campylobacter jejuni]

ChainA, Peptidase M23 [Campylobacter jejuni]

ChainA, Peptidase M23 [Campylobacter jejuni],6JN7_B Chain B, Peptidase M23 [Campylobacter jejuni],6JN7_C Chain C, Peptidase M23 [Campylobacter jejuni],6JN8_A Chain A, Peptidase M23 [Campylobacter jejuni]

Identificationand structural characterization of LytU [Staphylococcus aureus],5KQC_A Identification and structural characterization of LytU [Staphylococcus aureus]

ChainA, Peptidase M23 [Campylobacter jejuni]

Exo-glucosaminidase LytG OS=Bacillus subtilis (strain 168) OX=224308 GN=lytG PE=1 SV=1

Uncharacterized metalloprotease BUsg_310 OS=Buchnera aphidicola subsp. Schizaphis graminum (strain Sg) OX=198804 GN=BUsg_310 PE=3 SV=1

Uncharacterized metalloprotease HI_0409 OS=Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd) OX=71421 GN=HI_0409 PE=3 SV=1

Murein DD-endopeptidase MepM OS=Escherichia coli (strain K12) OX=83333 GN=mepM PE=1 SV=1

Murein DD-endopeptidase MepM OS=Escherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC) OX=199310 GN=mepM PE=3 SV=1