4IZZ | pdb_00004izz

Crystal Structure of Fischerella Transcription Factor HetR complexed with 21mer DNA target

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)
B	SCOP2B Superfamily	Homeodomain-like	8055694	3000001	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Winged helix DNA-binding domain	8055695	3000034	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	HetR, C-terminal hood domain	8055696	3002297	SCOP2B (2022-06-29)
A	SCOP2 Family	HetR, DNA-binding domain	8051720	4007483	SCOP2 (2022-06-29)
A	SCOP2 Family	HetR, C-terminal hood domain	8055693	4007645	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Winged helix DNA-binding domain	8055695	3000034	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	HetR, C-terminal hood domain	8055696	3002297	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Homeodomain-like	8055694	3000001	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Peptidase_S48_N	e4izzB1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: Peptidase_S48_N	ECOD (1.6)
B	Peptidase_S48_C	e4izzB2	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Peptidase_S48_C	ECOD (1.6)
B	hetR	e4izzB3	A: a+b duplicates or obligate multimers	X: Dimerization domain of heterocyst differentiation protein HetR (From Topology)	H: Dimerization domain of heterocyst differentiation protein HetR (From Topology)	T: Dimerization domain of heterocyst differentiation protein HetR	F: hetR	ECOD (1.6)
A	Peptidase_S48_N	e4izzA1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: Peptidase_S48_N	ECOD (1.6)
A	Peptidase_S48_C	e4izzA2	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Peptidase_S48_C	ECOD (1.6)
A	hetR	e4izzA3	A: a+b duplicates or obligate multimers	X: Dimerization domain of heterocyst differentiation protein HetR (From Topology)	H: Dimerization domain of heterocyst differentiation protein HetR (From Topology)	T: Dimerization domain of heterocyst differentiation protein HetR	F: hetR	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.10.1680	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	HetR, N-terminal DNA-binding domain	CATH (4.3.0)
B	1.10.10.1670	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	HetR, flap domain	CATH (4.3.0)
A	1.10.10.1680	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	HetR, N-terminal DNA-binding domain	CATH (4.3.0)
A	1.10.10.1670	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	HetR, flap domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF18460	Heterocyst differentiation regulator C-terminal Hood domain (HetR_C)	Heterocyst differentiation regulator C-terminal Hood domain	This is the C-terminal hood domain found in Heterocyst differentiation control protein (HetR). HetR-C binds to PatS peptide. Two PatS6 peptides bind to the lateral clefts of HetR-Hood domain, and trigger significant conformational changes of the flap ...	This is the C-terminal hood domain found in Heterocyst differentiation control protein (HetR). HetR-C binds to PatS peptide. Two PatS6 peptides bind to the lateral clefts of HetR-Hood domain, and trigger significant conformational changes of the flap domain, resulting in dissociation of the auxiliary alpha-helix and eventually release of HetR from the DNA major grove and termination of transcription [1].	Domain
A, B	PF03574	Peptidase family S48 (Peptidase_S48)	Peptidase family S48	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C, D	DNA (5'-D(GPTPGPAPGPGPGPGPTPTPAPAPAPCPCPCPCPTPCPAP*C)-3')	-	-	-
A, B	Transcription Factor HetR	DNA binding binding nucleic acid binding peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity	developmental process heterocyst development cellular developmental process cellular process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR041935	HetR, flap domain	Homologous Superfamily
A, B	IPR041936	HetR, N-terminal DNA-binding domain	Homologous Superfamily
A, B	IPR005319	Peptidase S48, DNA-binding transcriptional activator HetR	Family
A, B	IPR040949	HetR, C-terminal Hood domain	Domain

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.