Annotations: 3SXZ

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	FCD	e3sxzA1	A: alpha bundles	X: Fatty acid responsive transcription factor FadR, C-terminal domain (From Topology)	H: Fatty acid responsive transcription factor FadR, C-terminal domain (From Topology)	T: Fatty acid responsive transcription factor FadR, C-terminal domain	F: FCD	ECOD (1.6)
B	FCD	e3sxzB1	A: alpha bundles	X: Fatty acid responsive transcription factor FadR, C-terminal domain (From Topology)	H: Fatty acid responsive transcription factor FadR, C-terminal domain (From Topology)	T: Fatty acid responsive transcription factor FadR, C-terminal domain	F: FCD	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.120.530	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	GntR ligand-binding domain-like	CATH (4.3.0)
B	1.20.120.530	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	GntR ligand-binding domain-like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF07729	FCD domain (FCD)	FCD domain	This domain is the C-terminal ligand binding domain of many members of the GntR family. This domain binds to a range of effector molecules, including Lactate, Zn(II), Ni(II), Ca(II), Mg(II), citrate, sugar acids, sialic acid and N-acetylglucosamine-6 ...	This domain is the C-terminal ligand binding domain of many members of the GntR family. This domain binds to a range of effector molecules, including Lactate, Zn(II), Ni(II), Ca(II), Mg(II), citrate, sugar acids, sialic acid and N-acetylglucosamine-6-P, that regulate the transcription of genes through the action of the N-terminal DNA-binding domain Pfam:PF00392 (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043). This domain is found in Swiss:P45427 and Swiss:P31460 that are regulators of sugar biosynthesis operons. It is also in the known structure of FadR where it binds to acyl-coA, the domain is alpha helical [1]. This family has been named as FCD for (FadR C-terminal Domain).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Transcriptional regulator, GntR family	DNA binding binding organic cyclic compound binding nucleic acid binding transcription regulator activity DNA-binding transcription factor activity cation binding ion binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A, B	IPR008920	Transcription regulator FadR/GntR, C-terminal	Homologous Superfamily
A, B	IPR000524	Transcription regulator HTH, GntR	Domain
A, B	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
A, B	IPR011711	GntR, C-terminal	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.