5C8E | pdb_00005c8e

Crystal structure of Thermus thermophilus CarH bound to adenosylcobalamin and a 26-bp DNA segment

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	MerR_1	e5c8eA3	A: alpha arrays	X: HTH	H: HTH	T: Putative DNA-binding domain	F: MerR_1	ECOD (1.6)
A	B12-binding_2	e5c8eA2	A: alpha arrays	X: Methionine synthase domain-like (From Topology)	H: Methionine synthase domain-like (From Topology)	T: Methionine synthase domain-like	F: B12-binding_2	ECOD (1.6)
A	B12-binding	e5c8eA1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: B12-binding	ECOD (1.6)
B	MerR_1	e5c8eB3	A: alpha arrays	X: HTH	H: HTH	T: Putative DNA-binding domain	F: MerR_1	ECOD (1.6)
B	B12-binding_2	e5c8eB2	A: alpha arrays	X: Methionine synthase domain-like (From Topology)	H: Methionine synthase domain-like (From Topology)	T: Methionine synthase domain-like	F: B12-binding_2	ECOD (1.6)
B	B12-binding	e5c8eB1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: B12-binding	ECOD (1.6)
C	MerR_1	e5c8eC3	A: alpha arrays	X: HTH	H: HTH	T: Putative DNA-binding domain	F: MerR_1	ECOD (1.6)
C	B12-binding_2	e5c8eC2	A: alpha arrays	X: Methionine synthase domain-like (From Topology)	H: Methionine synthase domain-like (From Topology)	T: Methionine synthase domain-like	F: B12-binding_2	ECOD (1.6)
C	B12-binding	e5c8eC1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: B12-binding	ECOD (1.6)
D	B12-binding_2	e5c8eD1	A: alpha arrays	X: Methionine synthase domain-like (From Topology)	H: Methionine synthase domain-like (From Topology)	T: Methionine synthase domain-like	F: B12-binding_2	ECOD (1.6)
D	B12-binding	e5c8eD2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: B12-binding	ECOD (1.6)
E	MerR_1	e5c8eE3	A: alpha arrays	X: HTH	H: HTH	T: Putative DNA-binding domain	F: MerR_1	ECOD (1.6)
E	B12-binding_2	e5c8eE2	A: alpha arrays	X: Methionine synthase domain-like (From Topology)	H: Methionine synthase domain-like (From Topology)	T: Methionine synthase domain-like	F: B12-binding_2	ECOD (1.6)
E	B12-binding	e5c8eE1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: B12-binding	ECOD (1.6)
F	MerR_1	e5c8eF3	A: alpha arrays	X: HTH	H: HTH	T: Putative DNA-binding domain	F: MerR_1	ECOD (1.6)
F	B12-binding_2	e5c8eF2	A: alpha arrays	X: Methionine synthase domain-like (From Topology)	H: Methionine synthase domain-like (From Topology)	T: Methionine synthase domain-like	F: B12-binding_2	ECOD (1.6)
F	B12-binding	e5c8eF1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: B12-binding	ECOD (1.6)
G	MerR_1	e5c8eG3	A: alpha arrays	X: HTH	H: HTH	T: Putative DNA-binding domain	F: MerR_1	ECOD (1.6)
G	B12-binding_2	e5c8eG2	A: alpha arrays	X: Methionine synthase domain-like (From Topology)	H: Methionine synthase domain-like (From Topology)	T: Methionine synthase domain-like	F: B12-binding_2	ECOD (1.6)
G	B12-binding	e5c8eG1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: B12-binding	ECOD (1.6)
H	B12-binding_2	e5c8eH2	A: alpha arrays	X: Methionine synthase domain-like (From Topology)	H: Methionine synthase domain-like (From Topology)	T: Methionine synthase domain-like	F: B12-binding_2	ECOD (1.6)
H	B12-binding	e5c8eH1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: B12-binding	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.1660.10	Mainly Alpha	Orthogonal Bundle	Multidrug-efflux Transporter Regulator	Chain: A	CATH (4.3.0)
B	1.10.1240.10	Mainly Alpha	Orthogonal Bundle	Methyltransferase, Methionine Synthase (B12-binding Domains)	Chain A, domain 1	CATH (4.3.0)
B	3.40.50.280	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Cobalamin-binding domain	CATH (4.3.0)
C	3.40.50.280	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Cobalamin-binding domain	CATH (utative)
G	1.10.1660.10	Mainly Alpha	Orthogonal Bundle	Multidrug-efflux Transporter Regulator	Chain: A	CATH (4.3.0)
G	1.10.1240.10	Mainly Alpha	Orthogonal Bundle	Methyltransferase, Methionine Synthase (B12-binding Domains)	Chain A, domain 1	CATH (4.3.0)
G	3.40.50.280	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Cobalamin-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H	PF02607	B12 binding domain (B12-binding_2)	B12 binding domain	This B12 binding domain is found in methionine synthase EC:2.1.1.13 Swiss:Q99707, and other shorter proteins that bind to B12. This domain is always found to the N-terminus of Pfam:PF02310. The structure of this domain is known [1], it is a 4 helix b ...	This B12 binding domain is found in methionine synthase EC:2.1.1.13 Swiss:Q99707, and other shorter proteins that bind to B12. This domain is always found to the N-terminus of Pfam:PF02310. The structure of this domain is known [1], it is a 4 helix bundle. Many of the conserved residues in this domain are involved in B12 binding, such as those in the MXXVG motif.	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	PF13411	MerR HTH family regulatory protein (MerR_1)	MerR HTH family regulatory protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H	Light-dependent transcriptional regulator CarH	DNA binding binding nucleic acid binding vitamin binding cobalamin binding tetrapyrrole binding heterocyclic compound binding small molecule binding transcription regulator activity DNA-binding transcription factor activity cation binding ion binding metal ion binding identical protein binding DNA binding binding nucleic acid binding vitamin binding cobalamin binding tetrapyrrole binding heterocyclic compound binding small molecule binding transcription regulator activity DNA-binding transcription factor activity cation binding ion binding metal ion binding identical protein binding protein binding	-	-
I, K	26-mer DNA segment containing the CarH operator sequence (antisense strand)	-	-	-
J, L	26-mer DNA segment containing the CarH operator sequence (sense strand)	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H	IPR003759	Cobalamin (vitamin B12)-binding module, cap domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR009061	Putative DNA-binding domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR036724	Cobalamin-binding domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR047057	MerR transcriptional regulator	Family
A, B, C, D, E A, B, C, D, E, F, G, H	IPR006158	Cobalamin (vitamin B12)-binding domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR036594	Methionine synthase domain	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR000551	MerR-type HTH domain	Domain