Annotations: 2CFX

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2cfxa1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Lrp/AsnC-like transcriptional regulator N-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
A	d2cfxa2	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	Lrp/AsnC-like transcriptional regulator C-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
B	d2cfxb1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Lrp/AsnC-like transcriptional regulator N-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
B	d2cfxb2	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	Lrp/AsnC-like transcriptional regulator C-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
C	d2cfxc1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Lrp/AsnC-like transcriptional regulator N-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
C	d2cfxc2	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	Lrp/AsnC-like transcriptional regulator C-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
D	d2cfxd1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Lrp/AsnC-like transcriptional regulator N-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
D	d2cfxd2	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	Lrp/AsnC-like transcriptional regulator C-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
E	d2cfxe1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Lrp/AsnC-like transcriptional regulator N-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
E	d2cfxe2	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	Lrp/AsnC-like transcriptional regulator C-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
F	d2cfxf1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Lrp/AsnC-like transcriptional regulator N-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
F	d2cfxf2	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	Lrp/AsnC-like transcriptional regulator C-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
G	d2cfxg1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Lrp/AsnC-like transcriptional regulator N-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
G	d2cfxg2	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	Lrp/AsnC-like transcriptional regulator C-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
H	d2cfxh1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Lrp/AsnC-like transcriptional regulator N-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)
H	d2cfxh2	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	Lrp/AsnC-like transcriptional regulator C-terminal domain	Transcriptional regulator LrpC	(Bacillus subtilis ) [TaxId: 1423 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Lrp/AsnC transcriptional regulator-like	8056307	4000279	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Winged helix DNA-binding domain	8056308	3000034	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Dimeric alpha+beta barrel	8056309	3000089	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Dimeric alpha+beta barrel	8056309	3000089	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Winged helix DNA-binding domain	8056308	3000034	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Dimeric alpha+beta barrel	8056309	3000089	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Winged helix DNA-binding domain	8056308	3000034	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Dimeric alpha+beta barrel	8056309	3000089	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Winged helix DNA-binding domain	8056308	3000034	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Dimeric alpha+beta barrel	8056309	3000089	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Winged helix DNA-binding domain	8056308	3000034	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Dimeric alpha+beta barrel	8056309	3000089	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Winged helix DNA-binding domain	8056308	3000034	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Dimeric alpha+beta barrel	8056309	3000089	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Winged helix DNA-binding domain	8056308	3000034	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Winged helix DNA-binding domain	8056308	3000034	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Dimeric alpha+beta barrel	8056309	3000089	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	PF13412	e2cfxA1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PF13412	ECOD (1.6)
A	PF01037	e2cfxA2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: PF01037	ECOD (1.6)
B	PF13412	e2cfxB1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PF13412	ECOD (1.6)
B	PF01037	e2cfxB2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: PF01037	ECOD (1.6)
C	PF13412	e2cfxC1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PF13412	ECOD (1.6)
C	PF01037	e2cfxC2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: PF01037	ECOD (1.6)
D	PF13412	e2cfxD1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PF13412	ECOD (1.6)
D	PF01037	e2cfxD2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: PF01037	ECOD (1.6)
E	PF13412	e2cfxE1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PF13412	ECOD (1.6)
E	PF01037	e2cfxE2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: PF01037	ECOD (1.6)
F	PF13412	e2cfxF1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PF13412	ECOD (1.6)
F	PF01037	e2cfxF2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: PF01037	ECOD (1.6)
G	PF13412	e2cfxG1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PF13412	ECOD (1.6)
G	PF01037	e2cfxG2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: PF01037	ECOD (1.6)
H	PF13412	e2cfxH1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PF13412	ECOD (1.6)
H	PF01037	e2cfxH2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: PF01037	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
A	3.30.70.920	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) domain	CATH (4.3.0)
B	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
B	3.30.70.920	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) domain	CATH (4.3.0)
C	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
C	3.30.70.920	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) domain	CATH (4.3.0)
D	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
D	3.30.70.920	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) domain	CATH (4.3.0)
E	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
E	3.30.70.920	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) domain	CATH (4.3.0)
F	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
F	3.30.70.920	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) domain	CATH (4.3.0)
G	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
G	3.30.70.920	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) domain	CATH (4.3.0)
H	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
H	3.30.70.920	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) 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	PF01037	Lrp/AsnC ligand binding domain (AsnC_trans_reg)	Lrp/AsnC ligand binding domain	The l-leucine-responsive regulatory protein (Lrp/AsnC) family is a family of similar bacterial transcription regulatory proteins. The family is named after two E. coli proteins involved in regulating amino acid metabolism. This entry corresponds to ...	The l-leucine-responsive regulatory protein (Lrp/AsnC) family is a family of similar bacterial transcription regulatory proteins. The family is named after two E. coli proteins involved in regulating amino acid metabolism. This entry corresponds to the usually C-terminal regulatory ligand binding domain. Structurally this domain has a dimeric alpha/beta barrel fold [2]. This domain binds almost exclusively amino acids but also 4-hydroxyphenylpyruvate and kynurenine (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	PF13412	Winged helix-turn-helix DNA-binding (HTH_24)	Winged helix-turn-helix DNA-binding	-	Domain

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	HTH-TYPE TRANSCRIPTIONAL REGULATOR LRPC	sequence-specific DNA binding DNA binding binding organic cyclic compound binding nucleic acid binding	response to acid chemical response to organic substance response to stimulus response to chemical response to amino acid	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR019887	Transcription regulator AsnC/Lrp, ligand binding domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR000485	AsnC-type HTH domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR011008	Dimeric alpha-beta barrel	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR019888	Transcription regulator AsnC-like	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 R01GM133198.