Annotations: 7P9U

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	AA_permease_2_1	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: AA_permease_2_1	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	protein binding binding virus receptor activity exogenous protein binding RNA binding double-stranded RNA binding nucleic acid binding protein heterodimerization activity protein dimerization activity 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 protein binding binding virus receptor activity exogenous protein binding RNA binding double-stranded RNA binding nucleic acid binding protein heterodimerization activity protein dimerization activity 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 transporter activity organic acid transmembrane transporter activity transmembrane transporter activity organic anion transmembrane transporter activity aromatic amino acid transmembrane transporter activity identical protein binding protein homodimerization activity cell adhesion molecule binding cadherin binding L-leucine transmembrane transporter activity branched-chain amino acid transmembrane transporter activity	amino acid transport organic acid transport localization nitrogen compound transport organic anion transport carboxylic acid transport transport neutral amino acid transport proline transport establishment of localization branched-chain amino acid transport isoleucine transport aromatic amino acid transport tyrosine transport amino acid transport organic acid transport localization nitrogen compound transport organic anion transport carboxylic acid transport transport neutral amino acid transport proline transport establishment of localization branched-chain amino acid transport isoleucine transport aromatic amino acid transport tyrosine transport L-amino acid transport organic cation transport carbohydrate metabolic process primary metabolic process metabolic process cellular process phenylalanine 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 response to stimulus response to chemical response to dsRNA response to nitrogen compound response to exogenous dsRNA 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 amino acid import across plasma membrane methionine transport sulfur amino acid transport sulfur compound transport L-leucine transport L-leucine import across plasma membrane monoatomic ion transport monoatomic cation transport calcium ion transport metal ion transport valine transport L-histidine transport basic amino acid transport histidine transport tryptophan transport	cellular anatomical structure membrane membrane-bounded organelle intracellular anatomical structure pigment granule intracellular vesicle intracellular membrane-bounded organelle intracellular organelle melanosome cytoplasmic vesicle organelle cytoplasm vesicle cell periphery cellular anatomical structure membrane membrane-bounded organelle intracellular anatomical structure pigment granule intracellular vesicle intracellular membrane-bounded organelle intracellular organelle melanosome cytoplasmic vesicle organelle cytoplasm vesicle cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane basal part of cell basal plasma membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space extracellular membrane-bounded organelle cell surface anchoring junction cell junction basolateral plasma membrane nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen vacuolar membrane lytic vacuole vacuole lytic vacuole membrane bounding membrane of organelle lysosomal membrane organelle membrane lysosome somatodendritic compartment cell body cell pole apical pole of neuron neuronal cell body 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 modified amino acid transmembrane transporter activity secondary active transmembrane transporter activity cystine:glutamate antiporter activity 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 modified amino acid transmembrane transporter activity secondary active transmembrane transporter activity cystine:glutamate antiporter activity antiporter activity active transmembrane transporter activity acidic amino acid 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 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 organic acid transmembrane transport organic anion transport nitrogen compound transport carboxylic acid transmembrane transport carboxylic acid transport 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 biological process regulation of cellular process oxoacid metabolic process sulfur amino acid metabolic process biological regulation carboxylic acid metabolic process amino acid metabolic process primary metabolic process organic acid metabolic process regulation of cysteine metabolic process alpha-amino acid metabolic process regulation of primary metabolic process cysteine metabolic process regulation of sulfur metabolic process regulation of small molecule metabolic process regulation of amino acid metabolic process metabolic process small molecule metabolic process sulfur compound 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 peptide transport oligopeptide transmembrane transport dipeptide transport oligopeptide import across plasma membrane amide transport dipeptide transmembrane transport dipeptide import across plasma membrane glutathione metabolic process modified amino acid metabolic process amide 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 regulation of biosynthetic process pigment metabolic process regulation of melanin biosynthetic process pigment biosynthetic process regulation of secondary metabolite biosynthetic process melanin metabolic process secondary metabolic process regulation of secondary metabolic process biosynthetic process secondary metabolite biosynthetic process phenol-containing compound metabolic 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 modified amino acid biosynthetic process regulation of glutathione biosynthetic process amide biosynthetic process sulfur compound biosynthetic process peptide 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 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	cellular anatomical structure membrane 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 cellular anatomical structure membrane 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	IPR013780	Glycosyl hydrolase, all-beta	Homologous Superfamily
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
B	IPR050598	Cellular Amino Acid Transporter	Family
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 atrial fibrillation ulcerative colitis 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 atrial fibrillation ulcerative colitis 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 R01GM157729.