Annotations: 7P9U

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PF13520	e7p9uB1	A: alpha complex topology	X: Sodium:neurotransmitter symporter family (SNF)-like (From Topology)	H: Sodium:neurotransmitter symporter family (SNF)-like (From Topology)	T: Sodium:neurotransmitter symporter family (SNF)-like	F: PF13520	ECOD (1.6)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	4F2 cell-surface antigen heavy chain	monoatomic cation transmembrane transporter activity metal cation:monoatomic cation antiporter activity calcium:monoatomic cation antiporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity antiporter activity active monoatomic ion transmembrane transporter activity active transmembrane transporter activity calcium ion transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity calcium:sodium antiporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity monoatomic cation transmembrane transporter activity metal cation:monoatomic cation antiporter activity calcium:monoatomic cation antiporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity antiporter activity active monoatomic ion transmembrane transporter activity active transmembrane transporter activity calcium ion transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity calcium:sodium antiporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity RNA binding double-stranded RNA binding binding organic cyclic compound binding nucleic acid binding protein binding exogenous protein binding alanine transmembrane transporter activity L-amino acid transmembrane transporter activity organic cation transmembrane transporter activity carboxylic acid transmembrane transporter activity amino acid transmembrane transporter activity L-alanine transmembrane transporter activity neutral L-amino acid transmembrane transporter activity organic acid transmembrane transporter activity organic anion transmembrane transporter activity aromatic amino acid transmembrane transporter activity cell adhesion molecule binding cadherin binding virus receptor activity protein heterodimerization activity protein dimerization activity neutral L-amino acid secondary active transmembrane transporter activity identical protein binding protein homodimerization activity L-leucine transmembrane transporter activity branched-chain amino acid transmembrane transporter activity	nitrogen compound transport organic anion transport carboxylic acid transport transport organic substance transport neutral amino acid transport establishment of localization amino acid transport organic acid transport localization branched-chain amino acid transport isoleucine transport biological process involved in interspecies interaction between organisms symbiont entry into host cell nitrogen compound transport organic anion transport carboxylic acid transport transport organic substance transport neutral amino acid transport establishment of localization amino acid transport organic acid transport localization branched-chain amino acid transport isoleucine transport biological process involved in interspecies interaction between organisms symbiont entry into host cell viral process symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction thyroid hormone transport regulation of hormone levels biological regulation hormone transport regulation of biological quality methionine transport organic cation transport sulfur amino acid transport sulfur compound transport valine transport aromatic amino acid transport tryptophan transport proline transport tyrosine transport L-amino acid transport carbohydrate metabolic process organic substance metabolic process primary metabolic process metabolic process phenylalanine transport response to organic substance response to stimulus response to chemical response to dsRNA response to nitrogen compound response to exogenous dsRNA response to organic cyclic compound import into cell carboxylic acid transmembrane transport amino acid transmembrane transport organic acid transmembrane transport L-alanine transmembrane transport import across plasma membrane L-alanine import across plasma membrane alanine transport transmembrane transport L-alanine transport L-alpha-amino acid transmembrane transport cellular process amino acid import across plasma membrane L-leucine transport L-leucine import across plasma membrane monoatomic ion transport monoatomic cation transport calcium ion transport metal ion transport L-histidine transport basic amino acid transport histidine transport	membrane cellular anatomical entity extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle cell periphery basal part of cell plasma membrane membrane cellular anatomical entity extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle cell periphery basal part of cell plasma membrane basal plasma membrane plasma membrane region basolateral plasma membrane vacuolar membrane intracellular anatomical structure lytic vacuole vacuole intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane bounding membrane of organelle lysosomal membrane cytoplasm organelle membrane lysosome somatodendritic compartment cell body cell pole apical pole of neuron neuronal cell body pigment granule intracellular vesicle melanosome cytoplasmic vesicle apical part of cell apical plasma membrane cell surface anchoring junction cell junction nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen synapse amino acid transport complex protein-containing complex plasma membrane protein complex membrane protein complex
B	Cystine/glutamate transporter	L-amino acid transmembrane transporter activity amino acid transmembrane transporter activity transporter activity carboxylic acid transmembrane transporter activity organic acid transmembrane transporter activity transmembrane transporter activity organic anion transmembrane transporter activity sulfur amino acid transmembrane transporter activity sulfur compound transmembrane transporter activity L-glutamate transmembrane transporter activity cystine secondary active transmembrane transporter activity modified amino acid transmembrane transporter activity secondary active transmembrane transporter activity cystine:glutamate antiporter activity L-amino acid transmembrane transporter activity amino acid transmembrane transporter activity transporter activity carboxylic acid transmembrane transporter activity organic acid transmembrane transporter activity transmembrane transporter activity organic anion transmembrane transporter activity sulfur amino acid transmembrane transporter activity sulfur compound transmembrane transporter activity L-glutamate transmembrane transporter activity cystine secondary active transmembrane transporter activity modified amino acid transmembrane transporter activity secondary active transmembrane transporter activity cystine:glutamate antiporter activity antiporter activity active transmembrane transporter activity neutral L-amino acid transmembrane transporter activity acidic amino acid transmembrane transporter activity neutral L-amino acid secondary active transmembrane transporter activity sulfur-containing amino acid secondary active transmembrane transporter activity L-kynurenine transmembrane transporter activity	organic acid transmembrane transport organic anion transport nitrogen compound transport carboxylic acid transmembrane transport carboxylic acid transport transport organic substance transport amino acid transmembrane transport L-amino acid transport establishment of localization L-glutamate import organic acid transport transmembrane transport amino acid transport localization organic acid transmembrane transport organic anion transport nitrogen compound transport carboxylic acid transmembrane transport carboxylic acid transport transport organic substance transport amino acid transmembrane transport L-amino acid transport establishment of localization L-glutamate import organic acid transport transmembrane transport amino acid transport localization acidic amino acid transport dicarboxylic acid transport L-alpha-amino acid transmembrane transport cellular process L-glutamate transmembrane transport developmental process multicellular organismal process epithelium development cellular developmental process sensory organ development eye development animal organ development visual system development tissue development epithelial cell differentiation multicellular organism development cell differentiation anatomical structure development camera-type eye development lens fiber cell differentiation sensory system development lens development in camera-type eye system development regulation of cellular process oxoacid metabolic process sulfur amino acid metabolic process amino acid metabolic process organic acid metabolic process alpha-amino acid metabolic process regulation of primary metabolic process organic substance metabolic process cellular ketone metabolic process regulation of sulfur metabolic process regulation of small molecule metabolic process small molecule metabolic process sulfur compound metabolic process regulation of biological process organonitrogen compound metabolic process regulation of cellular ketone metabolic process regulation of cellular amino acid metabolic process regulation of amine metabolic process cellular metabolic process biological regulation carboxylic acid metabolic process primary metabolic process regulation of cellular metabolic process regulation of cysteine metabolic process cysteine metabolic process amine metabolic process metabolic process regulation of sulfur amino acid metabolic process regulation of metabolic process response to stimulus response to redox state behavior adult behavior cellular response to stimulus cellular response to oxidative stress regulation of cellular response to stress cellular response to chemical stress regulation of cellular response to oxidative stress response to oxidative stress cellular response to chemical stimulus cellular response to stress regulation of response to stimulus response to stress regulation of response to stress response to chemical regulation of response to oxidative stress homeostatic process leukocyte apoptotic process regulation of programmed cell death regulation of neutrophil apoptotic process regulation of immune system process myeloid cell homeostasis myeloid cell apoptotic process regulation of leukocyte apoptotic process regulation of apoptotic process cell death neutrophil homeostasis neutrophil apoptotic process multicellular organismal-level homeostasis leukocyte homeostasis immune system process inflammatory cell apoptotic process homeostasis of number of cells apoptotic process regulation of myeloid cell apoptotic process programmed cell death regulation of body fluid levels wound healing homotypic cell-cell adhesion cell activation hemostasis platelet aggregation blood coagulation cell adhesion cell-cell adhesion coagulation regulation of biological quality response to wounding platelet activation regulation of cellular component organization cellular component organization regulation of synapse organization cell junction organization regulation of synapse structure or activity synapse organization cellular component organization or biogenesis response to toxic substance response to light stimulus system process learning learning or memory nervous system process visual learning visual behavior cognition associative learning response to radiation response to abiotic stimulus import into cell oligopeptide transport import across plasma membrane oligopeptide transmembrane transport dipeptide transport oligopeptide import across plasma membrane amide transport dipeptide transmembrane transport dipeptide import across plasma membrane glutathione metabolic process amide metabolic process cellular modified amino acid metabolic process negative regulation of ferroptosis negative regulation of programmed cell death negative regulation of biological process negative regulation of cellular process regulation of ferroptosis ferroptosis protein localization regulation of localization establishment of protein localization cellular localization regulation of protein localization regulation of transport regulation of establishment of protein localization regulation of protein transport protein transport regulation of cellular localization cellular macromolecule localization macromolecule localization intracellular amino acid homeostasis cellular homeostasis intracellular glutamate homeostasis chemical homeostasis intracellular chemical homeostasis L-cystine transport neutral amino acid transport sulfur amino acid transport sulfur compound transport modified amino acid transport trans-synaptic signaling regulation of signaling modulation of chemical synaptic transmission signaling cell-cell signaling chemical synaptic transmission cell communication synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling regulation of cell communication regulation of AMPA glutamate receptor clustering receptor clustering regulation of receptor clustering postsynaptic membrane organization regulation of protein localization to membrane membrane organization postsynapse organization AMPA glutamate receptor clustering glutamate receptor clustering neurotransmitter-gated ion channel clustering localization within membrane protein localization to membrane regulation of glutamate receptor clustering limb development appendage development pigment metabolic process regulation of melanin biosynthetic process organic hydroxy compound metabolic process pigment biosynthetic process melanin metabolic process secondary metabolic process secondary metabolite biosynthetic process organic substance biosynthetic process regulation of biosynthetic process regulation of secondary metabolite biosynthetic process organic cyclic compound metabolic process regulation of secondary metabolic process biosynthetic process organic hydroxy compound biosynthetic process phenol-containing compound metabolic process organic cyclic compound biosynthetic process phenol-containing compound biosynthetic process melanin biosynthetic process L-glutamate import across plasma membrane amino acid import across plasma membrane regulation of amide metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process regulation of glutathione biosynthetic process amide biosynthetic process regulation of cellular biosynthetic process sulfur compound biosynthetic process peptide biosynthetic process cellular modified amino acid biosynthetic process glutathione biosynthetic process nonribosomal peptide biosynthetic process peptide metabolic process L-kynurenine transmembrane transport cell population proliferation regulation of cell population proliferation glutamine family amino acid metabolic process regulation of glutamate metabolic process glutamate metabolic process dicarboxylic acid metabolic process L-amino acid metabolic process proteinogenic amino acid metabolic process regulation of glutamine family amino acid metabolic process head development forebrain development brain development nervous system development central nervous system development telencephalon development striatum development subpallium development response to nicotine response to organic substance response to organic cyclic compound ventricular system development glutathione transport tripeptide transmembrane transport glutathione transmembrane transport tripeptide transport tube development respiratory tube development lung development respiratory system development lung alveolus development	membrane cellular anatomical entity apical part of cell glial cell projection cell projection plasma membrane bounded cell projection astrocyte projection cell surface plasma membrane cell periphery actin-based cell projection plasma membrane region microvillus microvillus membrane membrane cellular anatomical entity apical part of cell glial cell projection cell projection plasma membrane bounded cell projection astrocyte projection cell surface plasma membrane cell periphery actin-based cell projection plasma membrane region microvillus microvillus membrane cell projection membrane brush border membrane cluster of actin-based cell projections brush border

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR042280	Amino acid transporter heavy chain SLC3A2	Family
A	IPR031984	Solute carrier family 3 member 2, N-terminal domain	Domain
A	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A	IPR006047	Glycosyl hydrolase, family 13, catalytic domain	Domain
A	IPR013780	Glycosyl hydrolase, all-beta	Homologous Superfamily
B	IPR004760	L-type amino acid transporter	Family
B	IPR002293	Amino acid/polyamine transporter I	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P08195	breast cancer Lung Neoplasms polycystic ovary syndrome diabetes mellitus malignant ependymoma tuberculosis lung benign neoplasm
B	Pharos: Q9UPY5	Neoplasm Metastasis contact dermatitis medulloblastoma osteosarcoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia psoriasis ulcerative colitis atrial fibrillation breast cancer ductal breast carcinoma in situ interstitial cystitis lung adenocarcinoma malignant ependymoma pancreatic intraductal papillary-mucinous carcinoma pituitary cancer Neoplasm Metastasis contact dermatitis medulloblastoma osteosarcoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia psoriasis ulcerative colitis atrial fibrillation breast cancer ductal breast carcinoma in situ interstitial cystitis lung adenocarcinoma malignant ependymoma pancreatic intraductal papillary-mucinous carcinoma pituitary cancer Sjogren syndrome atypical teratoid rhabdoid tumor chronic obstructive pulmonary disease Crohn disease glioblastoma invasive ductal breast carcinoma lung cancer malignant pancreatic neoplasm non-small cell lung carcinoma pancreatic intraductal papillary-mucinous neoplasm progressive supranuclear palsy tuberculosis Barrett esophagus cystic fibrosis head and neck cancer large cell medulloblastoma malignant colon neoplasm

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B	OPM	Transmembrane	Alpha-helical polytopic	APC (Amino acid-Polyamine-organoCation) superfamily	Amino acid permease

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Solute Carrier (SLC) Transporter Superfamily	SLC7A11 (xCT, xc⁻) cystine antiporter

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.