6H9O

Complex of the periplasmic domains of bacterial cell division proteins FtsQ and FtsB

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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	DivIB/FtsQ-like	8052305	3002102	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	POTRA domain-like	8052306	3002100	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	DivIB/FtsQ-like	8052305	3002102	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	POTRA domain-like	8052306	3002100	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	FtsQ	e6h9oA2	A: a+b two layers	X: Beta domain of DivIB/FtsQ (From Topology)	H: Beta domain of DivIB/FtsQ (From Topology)	T: Beta domain of DivIB/FtsQ	F: FtsQ	ECOD (1.6)
A	POTRA_1	e6h9oA1	A: a+b duplicates or obligate multimers	X: Polypeptide transport-associated (POTRA) domain (From Topology)	H: Polypeptide transport-associated (POTRA) domain (From Topology)	T: Polypeptide transport-associated (POTRA) domain	F: POTRA_1	ECOD (1.6)
C	FtsQ	e6h9oC1	A: a+b two layers	X: Beta domain of DivIB/FtsQ (From Topology)	H: Beta domain of DivIB/FtsQ (From Topology)	T: Beta domain of DivIB/FtsQ	F: FtsQ	ECOD (1.6)
C	POTRA_1	e6h9oC2	A: a+b duplicates or obligate multimers	X: Polypeptide transport-associated (POTRA) domain (From Topology)	H: Polypeptide transport-associated (POTRA) domain (From Topology)	T: Polypeptide transport-associated (POTRA) domain	F: POTRA_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.20.310	Alpha Beta	Roll	Ubiquitin-like (UB roll)	membrane protein fhac	CATH (4.3.0)
A	3.40.50.11690	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Cell division protein FtsQ/DivIB	CATH (4.3.0)
C	3.10.20.310	Alpha Beta	Roll	Ubiquitin-like (UB roll)	membrane protein fhac	CATH (4.3.0)
C	3.40.50.11690	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Cell division protein FtsQ/DivIB	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C	PF03799	Cell division protein FtsQ/DivIB, C-terminal (FtsQ_DivIB_C)	Cell division protein FtsQ/DivIB, C-terminal	FtsQ is an essential cell division protein. It may link together the upstream cell division proteins, which are predominantly cytoplasmic, with the downstream cell division proteins, which are predominantly periplasmic [1]. FtsQ may control the corre ...	FtsQ is an essential cell division protein. It may link together the upstream cell division proteins, which are predominantly cytoplasmic, with the downstream cell division proteins, which are predominantly periplasmic [1]. FtsQ may control the correct divisome assembly [2]. DivIB is a cell division protein from Gram-positive bacteria, probably homologous to Escherichia coli FtsQ. DivIB interacts with FtsL, DivIC and PBP-2B [3,4]. DivIB plays an essential role in division at high temperatures, maybe by protecting FtsL from degradation or by promoting formation of the FtsL-DivIC complex [5]. It is also required for efficient sporulation at all temperatures [6]. FtsQ and DivIB have a short N-terminal cytoplasmic domain and a larger C-terminal periplasmic domain [2,4]. This entry represents the C-terminal region.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	Cell division protein FtsQ	identical protein binding protein binding binding	cell septum assembly cytokinesis cellular component biogenesis cellular component organization cellular component assembly cytokinetic process division septum assembly cellular process cell cycle cell division cellular component organization or biogenesis cell cycle process reproductive process in single-celled organism reproductive process cell septum assembly cytokinesis cellular component biogenesis cellular component organization cellular component assembly cytokinetic process division septum assembly cellular process cell cycle cell division cellular component organization or biogenesis cell cycle process reproductive process in single-celled organism reproductive process FtsZ-dependent cytokinesis asexual reproduction	protein-containing complex divisome complex cell septum cellular anatomical entity FtsQBL complex cell division site cell periphery plasma membrane membrane
B, D	Cell division protein FtsB	identical protein binding protein binding binding	cell septum assembly cytokinesis cellular component biogenesis cellular component organization cellular component assembly cytokinetic process division septum assembly cellular process cell cycle cell division cellular component organization or biogenesis cell cycle process reproductive process in single-celled organism reproductive process cell septum assembly cytokinesis cellular component biogenesis cellular component organization cellular component assembly cytokinetic process division septum assembly cellular process cell cycle cell division cellular component organization or biogenesis cell cycle process reproductive process in single-celled organism reproductive process FtsZ-dependent cytokinesis asexual reproduction	cell division site cellular anatomical entity protein-containing complex intracellular anatomical structure divisome complex cell septum cytoplasm FtsBL complex cytosol FtsQBL complex cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR045335	Cell division protein FtsQ, C-terminal	Homologous Superfamily
A, C	IPR026579	Cell division protein FtsQ	Family
A, C	IPR034746	POTRA domain	Domain
A, C	IPR013685	POTRA domain, FtsQ-type	Domain
A, C	IPR005548	Cell division protein FtsQ/DivIB, C-terminal	Domain
B, D	IPR023081	Cell division protein FtsB	Family
B, D	IPR007060	Septum formation initiator FtsL/DivIC	Family

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.