This family consists of lytic murein transglycosylases (murein hydrolases) in the family of MltB, which is a membrane-bound lipoprotein in Escherichia coli. The N-terminal lipoprotein modification motif is conserved in about half the members of this family. The term Slt35 describes a naturally occurring soluble fragment of MltB. Members of this family never contain the putative peptidoglycan binding domain described by pfam01471, which is associated with several classes of bacterial cell wall lytic enzymes. [Cell envelope, Biosynthesis and degradation of murein sacculus and peptidoglycan]
Jiyao W et al.(2023). "The conserved domain database in 2023.",