5FQ8

Crystal structure of the SusCD complex BT2261-2264 from Bacteroides thetaiotaomicron

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
E	SCOP2B Superfamily	BT_2261-like	8106401	3002850	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	BT_2261-like	8106401	3002850	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	SusD-like	e5fq8A1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: SusD-like	ECOD (1.6)
C	SusD-like	e5fq8C1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: SusD-like	ECOD (1.6)
B	TonB_dep_Rec_1	e5fq8B2	A: beta barrels	X: Outer membrane meander beta-barrels	H: Porins	T: Ligand-gated protein channel	F: TonB_dep_Rec_1	ECOD (1.6)
B	Plug	e5fq8B1	A: a+b complex topology	X: N0 domain in phage tail proteins and secretins-like	H: TonB-dependent receptor plug domain (From Topology)	T: TonB-dependent receptor plug domain	F: Plug	ECOD (1.6)
D	TonB_dep_Rec_1	e5fq8D1	A: beta barrels	X: Outer membrane meander beta-barrels	H: Porins	T: Ligand-gated protein channel	F: TonB_dep_Rec_1	ECOD (1.6)
D	Plug	e5fq8D2	A: a+b complex topology	X: N0 domain in phage tail proteins and secretins-like	H: TonB-dependent receptor plug domain (From Topology)	T: TonB-dependent receptor plug domain	F: Plug	ECOD (1.6)
E	Lipid_bd	e5fq8E1	A: beta barrels	X: Lipocalins/Streptavidin	H: Putative lipid binding protein BT_2261 (From Topology)	T: Putative lipid binding protein BT_2261	F: Lipid_bd	ECOD (1.6)
F	Lipid_bd	e5fq8F1	A: beta barrels	X: Lipocalins/Streptavidin	H: Putative lipid binding protein BT_2261 (From Topology)	T: Putative lipid binding protein BT_2261	F: Lipid_bd	ECOD (1.6)
G	DUF5012	e5fq8G2	A: beta barrels	X: Lipocalins/Streptavidin	H: Quinohemoprotein amine dehydrogenase A chain, domain 3-like (From Topology)	T: Quinohemoprotein amine dehydrogenase A chain, domain 3-like	F: DUF5012	ECOD (1.6)
G	DUF5011	e5fq8G1	A: beta sandwiches	X: A putative surface protein (From Topology)	H: A putative surface protein (From Topology)	T: A putative surface protein	F: DUF5011	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	1.25.40.390	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat		CATH (4.3.0)
E	2.40.128.220	Mainly Beta	Beta Barrel	Lipocalin		CATH (4.3.0)
F	2.40.128.220	Mainly Beta	Beta Barrel	Lipocalin		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C	PF12771	Starch-binding associating with outer membrane (SusD-like_2)	Starch-binding associating with outer membrane	-	Repeat
E, F	PF12888	Lipid-binding putative hydrolase (Lipid_bd)	Lipid-binding putative hydrolase	-	Family
G	PF16404	BT_2262-like, C-terminal domain (BT_2262-like_C)	BT_2262-like, C-terminal domain	This domain found at the C-terminal end of proteins found in Bacteroidetes, including BT_2262 from Bacteroides thetaiotaomicron, a small outer membrane lipoprotein located on the periphery of the SusCD complex, which is essential for the import of ol ...	This domain found at the C-terminal end of proteins found in Bacteroidetes, including BT_2262 from Bacteroides thetaiotaomicron, a small outer membrane lipoprotein located on the periphery of the SusCD complex, which is essential for the import of oligosaccharides and for glycan degradation. This domain shows an eight-stranded beta-barrel with structural similarity to lipid binding domains. Its specific function remains unknown [1].	Domain
G	PF16403	Bacterial surface protein, Ig-like domain (Bact_surface_Ig-like)	Bacterial surface protein, Ig-like domain	This entry represents a bacterial immunoglobulin-like domain found in bacterial proteins, including Pesticidal crystal protein Cry22Aa from Bacillus thuringiensis, a protein with a toxic effect on several insect larvae and Chitinase 60 from Moritella ...	This entry represents a bacterial immunoglobulin-like domain found in bacterial proteins, including Pesticidal crystal protein Cry22Aa from Bacillus thuringiensis, a protein with a toxic effect on several insect larvae and Chitinase 60 from Moritella marina (Swiss:B1VBB0), responsible for degradation of krill chitin.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	PUTATIVE LIPOPROTEIN	cation binding ion binding binding metal ion binding small molecule binding	-	-
B, D	OUTER MEMBRANE PROTEIN OMP121	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
E, F	UNCHARACTERIZED PROTEIN	-	-	-
G	BT_2262 (UNCHARACTERISED LIPOPROTEIN)	-	-	-
H [auth P]	UNCHARACTERISED PROTEIN, BOUND PEPTIDE	-	-	-
I [auth Q]	UNCHARACTERISED PROTEIN, BOUND PEPTIDE	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR041662	SusD-like 2	Family
A, C	IPR011990	Tetratricopeptide-like helical domain superfamily	Homologous Superfamily
B, D	IPR039426	TonB-dependent receptor-like	Family
B, D	IPR037066	TonB-dependent receptor, plug domain superfamily	Homologous Superfamily
B, D	IPR023997	TonB-dependent outer membrane protein SusC/RagA, conserved site	Conserved Site
B, D	IPR036942	TonB-dependent receptor-like, beta-barrel domain superfamily	Homologous Superfamily
B, D	IPR023996	TonB-dependent outer membrane protein, SusC/RagA	Family
B, D	IPR012910	TonB-dependent receptor, plug domain	Domain
E, F	IPR024404	Lipid-binding, putative	Family
E, F	IPR038668	Lipid-binding superfamily	Homologous Superfamily
G	IPR032179	Pesticidal crystal protein Cry22Aa, Ig-like domain	Domain
G	IPR032180	BT_2262-like, C-terminal domain	Domain
G	IPR013783	Immunoglobulin-like fold	Homologous Superfamily

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E A, B, C, D, E, F	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 R01GM157729.