Annotations: 7D99

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF03522	Solute carrier family 12 (SLC12)	Solute carrier family 12	-	Family
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	potassium-chloride co-transporter KCC4	protein binding binding kinase binding enzyme binding protein kinase binding monoatomic cation transmembrane transporter activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity solute:monoatomic cation symporter activity potassium ion transmembrane transporter activity monoatomic anion:monoatomic cation symporter activity secondary active transmembrane transporter activity chloride:monoatomic cation symporter activity active monoatomic ion transmembrane transporter activity protein binding binding kinase binding enzyme binding protein kinase binding monoatomic cation transmembrane transporter activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity solute:monoatomic cation symporter activity potassium ion transmembrane transporter activity monoatomic anion:monoatomic cation symporter activity secondary active transmembrane transporter activity chloride:monoatomic cation symporter activity active monoatomic ion transmembrane transporter activity active transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity symporter activity potassium:chloride symporter activity inorganic anion transmembrane transporter activity ammonium channel activity passive transmembrane transporter activity channel activity	import into cell nitrogen compound transport transport ammonium transmembrane transport ammonium import across plasma membrane import across plasma membrane inorganic ion transmembrane transport establishment of localization inorganic cation import across plasma membrane inorganic cation transmembrane transport transmembrane transport localization inorganic ion import across plasma membrane cellular process import into cell nitrogen compound transport transport ammonium transmembrane transport ammonium import across plasma membrane import across plasma membrane inorganic ion transmembrane transport establishment of localization inorganic cation import across plasma membrane inorganic cation transmembrane transport transmembrane transport localization inorganic ion import across plasma membrane cellular process monoatomic ion transmembrane transport potassium ion transmembrane transport metal ion transport monoatomic cation transmembrane transport monoatomic ion transport potassium ion transport monoatomic cation transport potassium ion homeostasis inorganic ion homeostasis chemical homeostasis homeostatic process monoatomic ion homeostasis monoatomic cation homeostasis inorganic anion transmembrane transport chloride transport chloride transmembrane transport monoatomic anion transport monoatomic anion transmembrane transport inorganic anion transport trans-synaptic signaling synaptic signaling regulation of biological process signaling anterograde trans-synaptic signaling biological regulation cell-cell signaling chemical synaptic transmission cell communication cellular response to stimulus response to stimulus response to oxygen-containing compound cellular response to glucose stimulus intracellular glucose homeostasis cellular response to oxygen-containing compound response to hexose cellular response to carbohydrate stimulus cellular response to chemical stimulus cellular homeostasis response to monosaccharide response to carbohydrate response to glucose response to chemical glucose homeostasis carbohydrate homeostasis cellular response to hexose stimulus intracellular chemical homeostasis cellular response to monosaccharide stimulus regulation of cellular component size cell volume homeostasis cellular component organization cellular component organization or biogenesis regulation of biological quality regulation of cell size regulation of anatomical structure size chloride ion homeostasis monoatomic anion homeostasis potassium ion import across plasma membrane	cellular anatomical structure synapse cell junction cell periphery plasma membrane membrane protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR000076	K/Cl co-transporter	Family
A, B	IPR004841	Amino acid permease/ SLC12A domain	Domain
A, B	IPR018491	SLC12A transporter, C-terminal	Domain
A, B	IPR004842	SLC12A transporter family	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q9Y666	urinary bladder cancer colorectal adenoma ovarian cancer colorectal cancer pancreatic intraductal papillary-mucinous neoplasm urinary bladder neoplasm malignant ependymoma spina bifida

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	KCC4 cation-chloride cotransporter (CCC)

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.