3WA5

Crystal Structure of type VI peptidoglycan muramidase effector Tse3 in complex with its cognate immunity protein Tsi3

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	EUF08230	e3wa5A1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: EUF08230	ECOD (1.6)
A	EUF08539	e3wa5A2	A: a+b complex topology	X: Lysozyme-like (From Homology)	H: Lysozyme-like	T: Lysozyme-like	F: EUF08539	ECOD (1.6)
B	EUF08518	e3wa5B1	A: a+b three layers	X: Mog1p/PsbP-like	H: Mog1p/PsbP-like (From Topology)	T: Mog1p/PsbP-like	F: EUF08518	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.60.120.1690	Mainly Beta	Sandwich	Jelly Rolls		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF22115	T6SS, Peptidoglycan muramidase Tse3, catalytic domain (T6SS_Tse3_cat)	T6SS, Peptidoglycan muramidase Tse3, catalytic domain	This domain is found in Peptidoglycan muramidase Tse3 from Pseudomonas aeruginosa and similar sequences from bacteria. Tse3 is a toxin secreted by the H1 type VI (H1-T6SS) secretion system into the periplasm of recipient cells. This protein degrades ...	This domain is found in Peptidoglycan muramidase Tse3 from Pseudomonas aeruginosa and similar sequences from bacteria. Tse3 is a toxin secreted by the H1 type VI (H1-T6SS) secretion system into the periplasm of recipient cells. This protein degrades peptidoglycan via muramidase activity. It is organised into a small N-terminal domain with a C-terminal catalytic domain (this entry), which contains two major lobes that form an an open, accessible catalytic groove with three calcium-binding ions [1-3].	Domain
A	PF22120	T6SS, Peptidoglycan muramidase Tse3, N-terminal domain (T6SS_Tse3_N)	T6SS, Peptidoglycan muramidase Tse3, N-terminal domain	-	Repeat
B	PF22211	Type six secretion immunity 3 domain (Tsi3)	Type six secretion immunity 3 domain	This entry represents the Tsi3 domain. Tsi3 immunity protein prevents early activation of toxin Tse3. Three loops of Tsi3 deeply insert into the groove of Tse3, fully blocking its active site. This interaction serves as the structural basis for Tse3 ...	This entry represents the Tsi3 domain. Tsi3 immunity protein prevents early activation of toxin Tse3. Three loops of Tsi3 deeply insert into the groove of Tse3, fully blocking its active site. This interaction serves as the structural basis for Tse3 inactivation [1,2,3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Type VI secretion exported 3	hydrolase activity, acting on glycosyl bonds peptidoglycan muralytic activity hydrolase activity, hydrolyzing O-glycosyl compounds lysozyme activity hydrolase activity catalytic activity cation binding ion binding binding metal ion binding small molecule binding	-	host cellular component cellular anatomical structure host cell part host cell membrane membrane extracellular region
B	Tse3-specific immunity protein	cation binding ion binding binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR054338	Peptidoglycan muramidase Tse3, catalytic domain	Domain
A	IPR054356	Peptidoglycan muramidase Tse3, N-terminal domain	Domain
B	IPR053762	Toxin-Substrate Binding Inhibitor	Homologous Superfamily
B	IPR054004	Type six secretion immunity 3 domain	Domain

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B	OPM				Muramidase

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.