This domain found in the SidE bacterial effector protein mediates the mono-ADP-ribosylation of ubiquitin, which is then ligated to host proteins by the Pfam:PF12252 domain [1].
This entry represents the phosphodiesterase (PDE) domain found in the bacterial ubiquitinating enzymes, which belong to the SidE family. This domain catalyses the conjugation of ADP-ribosylated ubiquitin (ADPR-Ub), previously synthesised by the mono- ...
This entry represents the phosphodiesterase (PDE) domain found in the bacterial ubiquitinating enzymes, which belong to the SidE family. This domain catalyses the conjugation of ADP-ribosylated ubiquitin (ADPR-Ub), previously synthesised by the mono-ADP-ribosyltransferase (mART) domain, to a serine residue on substrates to generate a protein-phosphoribosyl-Ub (PR-Ub) product. These pathogen proteins are secreted bacterial effector proteins, which are translocated inside the host cell using the Dot/Icm secretion system [1,2]. The SidE family of enzymes carry out ubiquitination of host cell proteins in an E1/E2-independent manner [2,3].
This entry represents the N-terminal domain of SidJ family proteins. The SidJ_CaM family comprises proteins that function as calmodulin-dependent glutamylases. These proteins facilitate the attachment of glutamate moieties to specific catalytic resid ...
This entry represents the N-terminal domain of SidJ family proteins. The SidJ_CaM family comprises proteins that function as calmodulin-dependent glutamylases. These proteins facilitate the attachment of glutamate moieties to specific catalytic residues on target proteins such as SdeA, SdeB, SdeC, and SidE. This modification is essential for the mono-ADP-ribosyltransferase activity of SdeA and inhibits its ubiquitinating activity. The glutamylase activity of this family is dependent on the presence of host calmodulin, highlighting its role in host-pathogen interactions. Additionally, members of this family may possess deubiquitinase activity, potentially reversing substrate ubiquitination mediated by SdeA by cleaving the phosphodiester bond linking phosphoribosylated ubiquitin to protein substrates.