Annotations: 3TDP

Crystal structure of HSC at pH 4.5

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	RRM_1	e3tdpE1	A: beta barrels	X: beta-Grasp	H: HTH	T: winged helix domain	F: RRM_1	ECOD (v294.2)
D	RRM_1	e3tdpD1	A: beta barrels	X: beta-Grasp	H: HTH	T: winged helix domain	F: RRM_1	ECOD (v294.2)
C	RRM_1	e3tdpC1	A: beta barrels	X: beta-Grasp	H: HTH	T: winged helix domain	F: RRM_1	ECOD (v294.2)
B	RRM_1	e3tdpB1	A: beta barrels	X: beta-Grasp	H: HTH	T: winged helix domain	F: RRM_1	ECOD (v294.2)
A	RRM_1	e3tdpA1	A: beta barrels	X: beta-Grasp	H: HTH	T: winged helix domain	F: RRM_1	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
E	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
D	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
C	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
B	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
A	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E	PF01226	Formate/nitrite transporter (Form_Nir_trans)	Formate/nitrite transporter	Proteins in this entry belong to the Formate-Nitrite Transporter (FNT) family and includes the nitrite transport protein NirC and formate channel FocA [1,2]. They have a pentameric architecture with structural similarity to aquaporins and glyceropori ...	Proteins in this entry belong to the Formate-Nitrite Transporter (FNT) family and includes the nitrite transport protein NirC and formate channel FocA [1,2]. They have a pentameric architecture with structural similarity to aquaporins and glyceroporins, comprising a right-handed bundle of 6 transmembrane (TM) alpha-helices [1]. Proteins in this family transport the structurally related compounds, formate and nitrite.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E	formate/nitrite transporter	formate transmembrane transporter activity transporter activity monocarboxylic acid transmembrane transporter activity carboxylic acid transmembrane transporter activity transmembrane transporter activity cation binding ion binding binding metal ion binding small molecule binding	-	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E	IPR023271	Aquaporin-like	Homologous Superfamily
A, B, C, D, E	IPR024002	Formate/nitrite transporter, conserved site	Conserved Site
A, B, C, D, E	IPR000292	Formate/nitrite transporter	Family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels : Formate/Nitrite Transporter (FNT) Family	FNT3 Hydrosulphide Channel (HSC), pH 9.0

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.