Annotations: 5A1S

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D	2HCT	e5a1sD1	A: alpha arrays	X: Lipocalins/Streptavidin	H: Sodium-dependent citrate symporter	T: Sodium-dependent citrate symporter	F: 2HCT	ECOD (v295.2)
C	NTP_transferase	e5a1sC1	A: alpha arrays	X: Lipocalins/Streptavidin	H: SAM/DNA-glycosylase	T: SAM domain-like	F: NTP_transferase	ECOD (v295.2)
B	NTP_transferase	e5a1sB1	A: alpha arrays	X: Lipocalins/Streptavidin	H: SAM/DNA-glycosylase	T: SAM domain-like	F: NTP_transferase	ECOD (v295.2)
A	NTP_transferase	e5a1sA1	A: alpha arrays	X: Lipocalins/Streptavidin	H: SAM/DNA-glycosylase	T: SAM domain-like	F: NTP_transferase	ECOD (v295.2)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	CITRATE-SODIUM SYMPORTER	active transmembrane transporter activity transporter activity symporter activity transmembrane transporter activity secondary active transmembrane transporter activity cation binding ion binding binding metal ion binding small molecule binding	tricarboxylic acid metabolic process oxoacid metabolic process carboxylic acid metabolic process small molecule metabolic process metabolic process cellular process citrate metabolic process localization transport monoatomic ion transport monoatomic cation transport establishment of localization sodium ion transport metal ion transport	cell periphery cellular anatomical structure plasma membrane membrane

Chains	Accession	Name	Type
A, B, C, D	IPR018025	2-hydroxycarboxylate transporter, proteobacteria/firmicutes	Family
A, B, C, D	IPR004679	2-hydroxycarboxylate transporter	Family

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D	OPM	Transmembrane	Alpha-helical polytopic	Monovalent cation-proton antiporter	2-Hydroxycarboxylate transporter

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

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

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Solute Carrier (SLC) Transporter Superfamily	CitS Citrate symporter

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.

5A1S | pdb_00005a1s