9PHZ | pdb_00009phz

Crystal structure of the Spo0B-Spo0A complex from Bacillus subtilis (crystal form I)

External Resource: Annotation


Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
DSCOP2B SuperfamilySporulation response regulatory protein Spo0B 8036215 3000617 SCOP2B (2022-06-29)
CSCOP2B SuperfamilySporulation response regulatory protein Spo0B 8036215 3000617 SCOP2B (2022-06-29)
BSCOP2B SuperfamilySporulation response regulatory protein Spo0B 8036215 3000617 SCOP2B (2022-06-29)
ASCOP2B SuperfamilySporulation response regulatory protein Spo0B 8036215 3000617 SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
E,
F,
G [auth H],
H [auth I]		PF00072Response regulator receiver domain (Response_reg)Response regulator receiver domainThis domain receives the signal from the sensor partner in bacterial two-component systems. It is usually found N-terminal to a DNA binding effector domain. Domain
A, B, C, D
PF14682Sporulation initiation phospho-transferase B, C-terminal (SPOB_ab)Sporulation initiation phospho-transferase B, C-terminalSporulation initiation phospho-transferase B or SpoOB is part of a phospho-relay that initiates sporulation in Bacillus subtilis. Spo0B is a two-domain protein consisting of an N-terminal alpha-helical hairpin domain and a C-terminal alpha/beta domai ...Sporulation initiation phospho-transferase B or SpoOB is part of a phospho-relay that initiates sporulation in Bacillus subtilis. Spo0B is a two-domain protein consisting of an N-terminal alpha-helical hairpin domain and a C-terminal alpha/beta domain, represented by this family. Two subunits of Spo0B dimerise by a parallel association of helical hairpins to form a novel four-helix bundle from which the active histidine - involved in the auto-phosphorylation - protrudes. In the phospho-relay, the signal-receptor histidine kinases are dephosphorylated by a common response regulator, Spo0F. Spo0B then takes phosphorylated Spo0F as substrate hereby mediating the transfer of a phosphoryl group to Spo0A, the ultimate transcription factor.
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
E,
F,
G [auth H],
H [auth I]		Stage 0 sporulation protein A
A, B, C, D
Sporulation initiation phosphotransferase B

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
E,
F,
G [auth H],
H [auth I]		IPR011006CheY-like superfamilyHomologous Superfamily
E,
F,
G [auth H],
H [auth I]		IPR001789Signal transduction response regulator, receiver domainDomain
E,
F,
G [auth H],
H [auth I]		IPR016032Signal transduction response regulator, C-terminal effectorHomologous Superfamily
E,
F,
G [auth H],
H [auth I]		IPR036388Winged helix-like DNA-binding domain superfamilyHomologous Superfamily
E,
F,
G [auth H],
H [auth I]		IPR014879Sporulation initiation factor Spo0A, C-terminalDomain
E,
F,
G [auth H],
H [auth I]		IPR012052Sporulation transcription factor Spo0AFamily
E,
F,
G [auth H],
H [auth I]		IPR052048Signal Transduction Response RegulatorFamily
A, B, C, D
IPR039506SpoOB, alpha-helical domainDomain
A, B, C, D
IPR037100Sporulation initiation phosphotransferase B, C-terminal domain superfamilyHomologous Superfamily
A, B, C, D
IPR016122Sporulation initiation phosphotransferase B, C-terminalDomain
A, B, C, D
IPR016120Signal transduction histidine kinase, sporulation regulator SpoOBHomologous Superfamily