9K21 | pdb_00009k21

Cryo-EM structure of human taurine transporter TauT bound with homotaurine in an inward-open state

External Resource: Annotation

SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth L]	Light Chain	IGKV4	Kappa	sodium- and chloride-dependent taurine transporter	SAbDab (2025-10-17)
A [auth H]	Heavy Chain	IGHV5	-	sodium- and chloride-dependent taurine transporter	SAbDab (2025-10-17)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth A]	Sodium- and chloride-dependent taurine transporter	sulfur compound transmembrane transporter activity taurine transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity amino acid:sodium symporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity amino acid transmembrane transporter activity active transmembrane transporter activity amino acid:monoatomic cation symporter activity monoatomic ion transmembrane transporter activity sulfur compound transmembrane transporter activity taurine transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity amino acid:sodium symporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity amino acid transmembrane transporter activity active transmembrane transporter activity amino acid:monoatomic cation symporter activity monoatomic ion transmembrane transporter activity metal ion transmembrane transporter activity symporter activity alanine transmembrane transporter activity neutral L-amino acid transmembrane transporter activity carboxylic acid transmembrane transporter activity taurine:sodium symporter activity organic acid:sodium symporter activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity gamma-aminobutyric acid:sodium:chloride symporter activity monoatomic anion:monoatomic cation symporter activity secondary active monocarboxylate transmembrane transporter activity gamma-aminobutyric acid transmembrane transporter activity monoatomic anion:sodium symporter activity monocarboxylate:sodium symporter activity sodium:chloride symporter activity chloride:monoatomic cation symporter activity monocarboxylic acid transmembrane transporter activity	localization transport neurotransmitter transport establishment of localization nitrogen compound transport organic anion transport carboxylic acid transport neutral amino acid transport organic cation transport alanine transport amino acid transport organic acid transport taurine transmembrane transport transmembrane transport localization transport neurotransmitter transport establishment of localization nitrogen compound transport organic anion transport carboxylic acid transport neutral amino acid transport organic cation transport alanine transport amino acid transport organic acid transport taurine transmembrane transport transmembrane transport alkanesulfonate transmembrane transport sulfur compound transport cellular process import into cell import across plasma membrane developmental process regulation of biological process regulation of cellular process regulation of developmental process cellular developmental process biological regulation positive regulation of biological process regulation of cell differentiation positive regulation of developmental process positive regulation of cell differentiation cell differentiation positive regulation of cellular process monoatomic ion transmembrane transport sodium ion transmembrane transport metal ion transport monoatomic cation transmembrane transport monoatomic ion transport monoatomic cation transport sodium ion 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 amino acid import across plasma membrane amino acid transmembrane transport gamma-aminobutyric acid import acidic amino acid transport gamma-aminobutyric acid transport multicellular organismal process system process circulatory system process vascular process in circulatory system vascular transport transport across blood-brain barrier	cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane apical part of cell apical plasma membrane plasma membrane bounded cell projection cell projection cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane apical part of cell apical plasma membrane plasma membrane bounded cell projection cell projection actin-based cell projection microvillus microvillus membrane cell projection membrane basal part of cell basal plasma membrane basolateral plasma membrane somatodendritic compartment dendrite dendritic tree neuron projection GABA-ergic synapse cell body neuronal cell body
B [auth L]	Fragment antigen binding light chain	-	-	-
A [auth H]	Fragment antigen binding heavy chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth A]	IPR000175	Sodium:neurotransmitter symporter	Family
C [auth A]	IPR002434	Sodium:neurotransmitter symporter, taurine	Family
C [auth A]	IPR037272	Sodium:neurotransmitter symporter superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C [auth A]	Pharos: P31641	myocardial ischemia oligodendroglioma pancreatic ductal adenocarcinoma tuberculosis adrenal cortex carcinoma chronic obstructive pulmonary disease ductal breast carcinoma in situ Gaucher disease large cell medulloblastoma malignant colon neoplasm malignant pancreatic neoplasm myopathy osteosarcoma pancreatic intraductal papillary-mucinous neoplasm ulcerative colitis myocardial ischemia oligodendroglioma pancreatic ductal adenocarcinoma tuberculosis adrenal cortex carcinoma chronic obstructive pulmonary disease ductal breast carcinoma in situ Gaucher disease large cell medulloblastoma malignant colon neoplasm malignant pancreatic neoplasm myopathy osteosarcoma pancreatic intraductal papillary-mucinous neoplasm ulcerative colitis atypical teratoid rhabdoid tumor coronary artery disease gastric cancer interstitial cystitis lung cancer malignant ependymoma medulloblastoma nasopharyngeal carcinoma ovarian cancer psoriasis cardiomyopathy Crohn disease gastric carcinoma invasive ductal breast carcinoma lung carcinoma malignant mesothelioma

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.