Annotations: 5T4Y

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF07980,PF14322	e5t4yA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF07980,PF14322	ECOD (1.6)
C [auth B]	PF07980,PF14322	e5t4yB1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF07980,PF14322	ECOD (1.6)
B [auth D]	PF00593	e5t4yD1	A: beta barrels	X: Outer membrane meander beta-barrels	H: Porins	T: Ligand-gated protein channel	F: PF00593	ECOD (1.6)
D [auth C]	PF00593	e5t4yC1	A: beta barrels	X: Outer membrane meander beta-barrels	H: Porins	T: Ligand-gated protein channel	F: PF00593	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.25.40.390	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat		CATH (4.3.0)
C [auth B]	1.25.40.390	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C [auth B]	PF07980	SusD family (SusD_RagB)	SusD family	-	Repeat
A, C [auth B]	PF14322	Starch-binding associating with outer membrane (SusD-like_3)	Starch-binding associating with outer membrane	-	Repeat
B [auth D], D [auth C]	PF00593	TonB dependent receptor (TonB_dep_Rec)	TonB dependent receptor	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C [auth B]	SusD homolog	cation binding ion binding binding metal ion binding small molecule binding	-	membrane cellular anatomical entity
B [auth D], D [auth C]	SusC homolog	cation binding ion binding binding metal ion binding small molecule binding	-	cell periphery cell outer membrane external encapsulating structure membrane cell envelope outer membrane cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C [auth B]	IPR012944	RagB/SusD domain	Domain
A, C [auth B]	IPR011990	Tetratricopeptide-like helical domain superfamily	Homologous Superfamily
A, C [auth B]	IPR033985	SusD-like, N-terminal	Domain
B [auth D], D [auth C]	IPR037066	TonB-dependent receptor, plug domain superfamily	Homologous Superfamily
B [auth D], D [auth C]	IPR023997	TonB-dependent outer membrane protein SusC/RagA, conserved site	Conserved Site
B [auth D], D [auth C]	IPR036942	TonB-dependent receptor-like, beta-barrel domain superfamily	Homologous Superfamily
B [auth D], D [auth C]	IPR023996	TonB-dependent outer membrane protein, SusC/RagA	Family
B [auth D], D [auth C]	IPR000531	TonB-dependent receptor-like, beta-barrel	Domain
B [auth D], D [auth C]	IPR012910	TonB-dependent receptor, plug domain	Domain
B [auth D], D [auth C]	IPR008969	Carboxypeptidase-like, regulatory domain superfamily	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B [auth D], C [auth B], D [auth C]	OPM	Transmembrane	Beta-barrel transmembrane	Ligand-gated protein channels (n=22,S=24)	Outer Membrane Receptor (OMR)

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B [auth D], C [auth B], D [auth C]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B [auth D], C [auth B], D [auth C]	mpstruc	TRANSMEMBRANE PROTEINS: BETA-BARREL	Polysaccharide Utilization Proteins	SusCD complex BT2261-2264, space group P1

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 R01GM133198.