membrane-bound lytic murein transglycosylase F (MLTF) and similar proteins. This subfamily includes membrane-bound lytic murein transglycosylase F (MltF, murein lyase F) that degrades murein glycan strands. It is responsible for catalyzing the release of 1,6-anhydromuropeptides from peptidoglycan. Lytic transglycosylase catalyzes the cleavage of the beta-1,4-glycosidic bond between N-acetylmuramic acid (MurNAc) and N-acetyl-D-glucosamine (GlcNAc) as do goose-type lysozymes. However, in addition, it also makes a new glycosidic bond with the C6 hydroxyl group of the same muramic acid residue.

Membrane-bound lytic murein transglycosylase MltF [Cell wall/membrane/envelope biogenesis, Signal transduction mechanisms].

membrane-bound lytic murein transglycosylase MltF.

The solute binding domain of YfhD proteins, a member of the type 2 periplasmic binding fold protein superfamily. This subfamily includes the solute binding domain YfhD_N. These domains are found in the YfhD proteins that are predicted to function as lytic transglycosylases that cleave the glycosidic bond between N-acetylmuramic acid and N-acetylglucosamin in peptidoglycan, while the YfhD_N domain might act as an auxiliary or regulatory subunit. In addition to periplasmic solute binding domain, they have an SLT domain, typically found in soluble lytic transglycosylases, and a C-terminal low complexity domain. The YfhD proteins might have been recruited to create localized cell wall openings required for transport of large substrates such as DNA. They belong to the PBP2 superfamily of periplasmic binding proteins that differ in size and ligand specificity, but have similar tertiary structures consisting of two globular subdomains connected by a flexible hinge. They have been shown to bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap.

Bacterial extracellular solute-binding proteins, family 3.

AncestralCationic Amino Acid Solute Binding Protein (AncCDT-1) [unidentified]

Crystalstructure of the ancestral amino acid-binding protein AncCDT-1, a precursor of cyclohexadienyl dehydratase [synthetic construct],5T0W_B Crystal structure of the ancestral amino acid-binding protein AncCDT-1, a precursor of cyclohexadienyl dehydratase [synthetic construct],5T0W_C Crystal structure of the ancestral amino acid-binding protein AncCDT-1, a precursor of cyclohexadienyl dehydratase [synthetic construct],5T0W_D Crystal structure of the ancestral amino acid-binding protein AncCDT-1, a precursor of cyclohexadienyl dehydratase [synthetic construct]

ChainA, Stm4351 [Salmonella enterica subsp. enterica serovar Typhimurium],2Y7I_B Chain B, Stm4351 [Salmonella enterica subsp. enterica serovar Typhimurium]

Structureof the ligand-free form of truncated ArgBP (residues 20-233) from T. maritima [Thermotoga maritima MSB8]

Structureof the arginine-bound form of truncated (residues 20-233) ArgBP from T. maritima [Thermotoga maritima MSB8],6GGV_B Structure of the arginine-bound form of truncated (residues 20-233) ArgBP from T. maritima [Thermotoga maritima MSB8]

Membrane-bound lytic murein transglycosylase F OS=Desulfococcus oleovorans (strain DSM 6200 / JCM 39069 / Hxd3) OX=96561 GN=mltF PE=3 SV=2

Membrane-bound lytic murein transglycosylase F OS=Pseudomonas fluorescens (strain ATCC BAA-477 / NRRL B-23932 / Pf-5) OX=220664 GN=mltF PE=3 SV=2

Membrane-bound lytic murein transglycosylase F OS=Pseudomonas mendocina (strain ymp) OX=399739 GN=mltF PE=3 SV=1

Membrane-bound lytic murein transglycosylase F OS=Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961) OX=243277 GN=mltF PE=3 SV=1

Membrane-bound lytic murein transglycosylase F OS=Vibrio cholerae serotype O1 (strain ATCC 39541 / Classical Ogawa 395 / O395) OX=345073 GN=mltF PE=3 SV=1