Annotations: 7S1Y

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	APH	e7s1yB1	A: alpha bundles	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: APH	ECOD (develop294)
A	APH	e7s1yA1	A: alpha bundles	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: APH	ECOD (develop294)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00324	Amino acid permease (AA_permease)	Amino acid permease		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Solute carrier family 12 member 2	monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity protein binding binding protein-folding chaperone binding monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity solute:monoatomic cation symporter activity monoatomic anion:monoatomic cation symporter activity secondary active transmembrane transporter activity monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity protein binding binding protein-folding chaperone binding monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity solute:monoatomic cation symporter activity monoatomic anion:monoatomic cation symporter activity secondary active transmembrane transporter activity chloride:monoatomic cation symporter activity active transmembrane transporter activity symporter activity Hsp90 protein binding heat shock protein binding kinase binding enzyme binding protein kinase binding ammonium channel activity passive transmembrane transporter activity channel activity solute:sodium symporter activity monoatomic anion:sodium symporter activity sodium ion transmembrane transporter activity sodium:chloride symporter activity sodium:potassium:chloride symporter activity potassium:sodium symporter activity potassium:chloride symporter activity	regulation of localization establishment of protein localization regulation of cellular process regulation of protein localization transport matrix metallopeptidase secretion protein localization to extracellular region localization secretion by cell regulation of secretion by cell intracellular protein localization regulation of biological process regulation of matrix metallopeptidase secretion secretion regulation of localization establishment of protein localization regulation of cellular process regulation of protein localization transport matrix metallopeptidase secretion protein localization to extracellular region localization secretion by cell regulation of secretion by cell intracellular protein localization regulation of biological process regulation of matrix metallopeptidase secretion secretion regulation of transport establishment of protein localization to extracellular region biological regulation regulation of establishment of protein localization export from cell regulation of protein transport protein secretion establishment of localization regulation of protein secretion regulation of secretion protein transport macromolecule localization cellular process response to peptide response to stimulus response to chemical response to chemokine response to cytokine cellular response to cytokine stimulus cellular response to chemokine monoatomic ion transmembrane transport chloride transport transmembrane transport chloride transmembrane transport monoatomic anion transport monoatomic anion transmembrane transport monoatomic ion transport inorganic anion transport regulation of cellular component size homeostatic process positive regulation of cell volume cell volume homeostasis cellular component organization cellular homeostasis cellular component organization or biogenesis regulation of biological quality regulation of cell size regulation of anatomical structure size cellular response to stimulus cellular response to metal ion cellular response to chemical stimulus response to metal ion response to potassium ion cellular response to potassium ion signaling cell-cell signaling gamma-aminobutyric acid signaling pathway cell communication nitrogen compound transport transepithelial ammonium transport transepithelial transport response to osmotic stress hyperosmotic response response to stress response to abiotic stimulus potassium ion homeostasis inorganic ion homeostasis chemical homeostasis monoatomic ion homeostasis monoatomic cation homeostasis import into cell import across plasma membrane inorganic ion import across plasma membrane inorganic anion import across plasma membrane multicellular organismal process system process circulatory system process vascular process in circulatory system vascular transport transport across blood-brain barrier ammonium transmembrane transport intracellular monoatomic cation homeostasis intracellular chemical homeostasis intracellular potassium ion homeostasis intracellular monoatomic ion homeostasis sodium ion homeostasis intracellular sodium ion homeostasis intracellular monoatomic anion homeostasis intracellular chloride ion homeostasis monoatomic anion homeostasis chloride ion homeostasis inorganic cation import across plasma membrane positive regulation of biological process positive regulation of secretion by cell C4-dicarboxylate transport positive regulation of amine transport positive regulation of secretion regulation of aspartate secretion regulation of amino acid transport positive regulation of cellular process organic anion transport carboxylic acid transport positive regulation of aspartate secretion aspartate secretion positive regulation of organic acid transport organic acid transport amino acid transport amine transport acidic amino acid transport positive regulation of transport positive regulation of amino acid transport regulation of organic acid transport dicarboxylic acid transport regulation of amine transport trans-synaptic signaling regulation of signaling modulation of chemical synaptic transmission chemical synaptic transmission synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling regulation of cell communication spontaneous synaptic transmission regulation of spontaneous synaptic transmission sodium ion transmembrane transport metal ion transport monoatomic cation transmembrane transport monoatomic cation transport sodium ion transport sodium ion import across plasma membrane regulation of response to external stimulus regulation of developmental process negative regulation of biological process angiogenesis regulation of vasculature development regulation of response to wounding multicellular organism development tube morphogenesis vascular wound healing regulation of response to stress anatomical structure development regulation of multicellular organismal process response to wounding regulation of anatomical structure morphogenesis system development blood vessel development developmental process wound healing regulation of multicellular organismal development negative regulation of response to stimulus blood vessel morphogenesis tube development negative regulation of blood vessel morphogenesis negative regulation of developmental process negative regulation of wound healing angiogenesis involved in wound healing negative regulation of angiogenesis response to external stimulus negative regulation of response to wounding vasculature development circulatory system development negative regulation of vasculature development anatomical structure morphogenesis regulation of angiogenesis regulation of response to stimulus negative regulation of response to external stimulus regulation of wound healing anatomical structure formation involved in morphogenesis negative regulation of vascular wound healing negative regulation of multicellular organismal process regulation of vascular wound healing transepithelial chloride transport maintenance of blood-brain barrier multicellular organismal-level homeostasis anatomical structure homeostasis tissue homeostasis potassium ion transmembrane transport potassium ion transport potassium ion import across plasma membrane cell chemotaxis chemotaxis lymphocyte chemotaxis lymphocyte migration leukocyte migration taxis immune system process mononuclear cell migration T cell chemotaxis cell migration cell motility T cell migration leukocyte chemotaxis locomotion	cellular anatomical structure membrane 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 cellular anatomical structure membrane 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 cell projection neuron projection plasma membrane bounded cell projection somatodendritic compartment cell body neuronal cell body cell body membrane apical part of cell apical plasma membrane cell projection membrane intracellular anatomical structure intracellular vesicle intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle cytoplasm organelle membrane lateral plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR004841	Amino acid permease/SLC12A domain	Domain
A, B	IPR002444	Solute carrier family 12 member 2	Family
A, B	IPR018491	SLC12A transporter, C-terminal	Domain
A, B	IPR013612	Amino acid permease, N-terminal	Domain
A, B	IPR002443	Solute carrier family 12 member 1/2	Family
A, B	IPR004842	SLC12A transporter family	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P55011	hypertensive disorder epilepsy carcinoma prostate cancer Mammary Neoplasms, Experimental sarcomatoid carcinoma temporal lobe epilepsy glucose intolerance cardiovascular disease undifferentiated carcinoma lung cancer malignant mesothelioma mammary neoplasms, animal movement disorder ovarian cancer hypertensive disorder epilepsy carcinoma prostate cancer Mammary Neoplasms, Experimental sarcomatoid carcinoma temporal lobe epilepsy glucose intolerance cardiovascular disease undifferentiated carcinoma lung cancer malignant mesothelioma mammary neoplasms, animal movement disorder ovarian cancer pancreatic intraductal papillary-mucinous neoplasm cutaneous lupus erythematosus sinusitis glioblastoma ulcerative colitis invasive ductal breast carcinoma malignant colon neoplasm malignant pancreatic neoplasm pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia ductal breast carcinoma in situ large cell medulloblastoma malignant ependymoma medulloblastoma nonsyndromic genetic deafness atypical teratoid rhabdoid tumor breast cancer pancreatic intraductal papillary-mucinous carcinoma progressive supranuclear palsy psoriasis schizophrenia tuberculosis

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	Cation-chloride cotransporter

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Amino Acid/Polyamine/Organocation (APC) Superfamily	NKCC1 cation-chloride cotransporter (SLC12A2), K289N/A492E/L671C mutant with bound bumetanide

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.