Pseudokinase domain of the peptidoglycan biosynthetic protein MviN
The pseudokinase domain shows similarity to protein kinases but lacks crucial residues for catalytic activity. This family is composed of the mycobacterial protein MviN and similar proteins. MviN is an integral membrane protein that is essential for growth and is required for cell wall integrity and peptidogylcan (PG) biosynthesis. It comprises of 14 predicted transmembrane (TM) helices at the N-terminus, followed by an intracellular pseudokinase domain linked through a single TM helix to a carbohydrate binding extracellular domain. Phosphorylation of the MviN pseudokinase domain by the PG-sensitive serine/threonine protein kinase PknB recruits a forkhead associated (FHA) domain protein FhaA, which modulates local PG synthesis at cell poles and the septum. The MviN pseudokinase forms a canonical receptor kinase dimer.
Jiyao W et al.(2023). "The conserved domain database in 2023.",