6CAA | pdb_00006caa

CryoEM structure of human SLC4A4 sodium-coupled acid-base transporter NBCe1

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Sodium-coupled acid-base transporter, SLC4A-like	8092951	4007786	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nucleobase/cation symporter 2, NCS2-like	8092952	3002647	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Nucleobase/cation symporter 2, NCS2-like	8092952	3002647	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A		e6caaA1	A: P-loop domains-like	X: Cas7-related	H: CRISPR-associated protein Cas7f/Csy3	T: Peptidase_M2	F:	ECOD (20:10:01)
B		e6caaB1	A: P-loop domains-like	X: Cas7-related	H: CRISPR-associated protein Cas7f/Csy3	T: Glyco_transf_4	F:	ECOD (20:10:01)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Electrogenic sodium bicarbonate cotransporter 1	monoatomic cation transmembrane transporter activity bicarbonate transmembrane transporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity monoatomic cation:bicarbonate symporter activity active transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity symporter activity sodium:bicarbonate symporter activity monoatomic cation transmembrane transporter activity bicarbonate transmembrane transporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity monoatomic cation:bicarbonate symporter activity active transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity symporter activity sodium:bicarbonate symporter activity antiporter activity solute:inorganic anion antiporter activity monoatomic anion transmembrane transporter activity identical protein binding protein binding binding	ribonucleotide catabolic process pyridine nucleotide catabolic process aerobic respiration regulation of cellular process oxoacid metabolic process carbohydrate catabolic process carbohydrate derivative metabolic process organophosphate catabolic process regulation of generation of precursor metabolites and energy positive regulation of phosphate metabolic process nucleoside phosphate catabolic process organic acid metabolic process regulation of primary metabolic process regulation of ATP metabolic process nucleobase-containing compound metabolic process ribonucleotide catabolic process pyridine nucleotide catabolic process aerobic respiration regulation of cellular process oxoacid metabolic process carbohydrate catabolic process carbohydrate derivative metabolic process organophosphate catabolic process regulation of generation of precursor metabolites and energy positive regulation of phosphate metabolic process nucleoside phosphate catabolic process organic acid metabolic process regulation of primary metabolic process regulation of ATP metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process regulation of purine nucleotide catabolic process positive regulation of nucleotide catabolic process regulation of small molecule metabolic process glycolytic process regulation of nucleotide metabolic process phosphate-containing compound metabolic process pyridine-containing compound metabolic process small molecule metabolic process regulation of nucleobase-containing compound metabolic process purine ribonucleotide catabolic process phosphorus metabolic process nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process pyruvate metabolic process regulation of carbohydrate catabolic process regulation of biological process positive regulation of phosphorus metabolic process purine nucleoside diphosphate metabolic process primary metabolic process purine-containing compound catabolic process nucleotide metabolic process regulation of purine nucleotide metabolic process nucleobase-containing compound catabolic process positive regulation of ATP metabolic process nucleoside diphosphate metabolic process purine nucleoside diphosphate catabolic process nucleoside diphosphate catabolic process metabolic process regulation of phosphorus metabolic process regulation of nucleotide catabolic process positive regulation of carbohydrate metabolic process nucleoside triphosphate metabolic process monocarboxylic acid metabolic process purine ribonucleotide metabolic process regulation of metabolic process pyridine-containing compound catabolic process ribose phosphate metabolic process cellular respiration ATP metabolic process catabolic process energy derivation by oxidation of organic compounds positive regulation of nucleotide metabolic process positive regulation of purine nucleotide catabolic process positive regulation of biological process purine nucleotide metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine ribonucleoside triphosphate metabolic process ribonucleoside diphosphate metabolic process ribonucleoside diphosphate catabolic process regulation of carbohydrate metabolic process positive regulation of cellular process nucleotide catabolic process purine nucleoside triphosphate metabolic process carbohydrate metabolic process purine nucleotide catabolic process carbohydrate derivative catabolic process positive regulation of glycolytic process biological regulation ADP catabolic process carboxylic acid metabolic process generation of precursor metabolites and energy regulation of catabolic process regulation of glycolytic process purine-containing compound metabolic process positive regulation of purine nucleotide metabolic process positive regulation of catabolic process ADP metabolic process organophosphate metabolic process purine ribonucleoside diphosphate metabolic process cellular process positive regulation of small molecule metabolic process purine ribonucleoside diphosphate catabolic process transport sodium ion export across plasma membrane monoatomic ion transmembrane transport sodium ion transmembrane transport export from cell export across plasma membrane establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport localization monoatomic ion transport monoatomic cation transport sodium ion transport bicarbonate transport organic anion transport regulation of biological quality regulation of membrane potential homeostatic process regulation of intracellular pH cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis regulation of pH monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis regulation of cellular pH intracellular monoatomic ion homeostasis multicellular organismal process system process circulatory system process vascular process in circulatory system vascular transport transport across blood-brain barrier	cellular anatomical structure membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle cell surface intracellular anatomical structure cytoplasm cellular anatomical structure membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle cell surface intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane basal part of cell basal plasma membrane plasma membrane region basolateral plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003024	Sodium bicarbonate cotransporter	Family
A, B	IPR013769	Band 3 cytoplasmic domain	Domain
A, B	IPR003020	Bicarbonate transporter, eukaryotic	Family
A, B	IPR011531	Bicarbonate transporter-like, transmembrane domain	Domain
A, B	IPR016152	Phosphotransferase/anion transporter	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q9Y6R1	autosomal recessive proximal renal tubular acidosis renal tubular acidosis cataract glaucoma retinitis pigmentosa Liver Cirrhosis, Experimental lung adenocarcinoma interstitial cystitis lung cancer malignant ependymoma atypical teratoid rhabdoid tumor medulloblastoma oligodendroglioma chronic obstructive pulmonary disease pancreatic intraductal papillary-mucinous carcinoma autosomal recessive proximal renal tubular acidosis renal tubular acidosis cataract glaucoma retinitis pigmentosa Liver Cirrhosis, Experimental lung adenocarcinoma interstitial cystitis lung cancer malignant ependymoma atypical teratoid rhabdoid tumor medulloblastoma oligodendroglioma chronic obstructive pulmonary disease pancreatic intraductal papillary-mucinous carcinoma Crohn disease Pick disease developmental disability progressive supranuclear palsy Down syndrome glioblastoma tuberculosis invasive ductal breast carcinoma lung carcinoma Alzheimer disease malignant mesothelioma nephrosclerosis ovarian cancer cone-rod dystrophy pancreatic intraductal papillary-mucinous neoplasm cystic fibrosis pituitary cancer ductal breast carcinoma in situ retinal degeneration intellectual disability ulcerative colitis large cell medulloblastoma malignant colon neoplasm astrocytic tumor malignant pancreatic neoplasm band keratopathy non-small cell lung carcinoma pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia primitive neuroectodermal tumor distal renal tubular acidosis

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	Anion exchanger family

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	SLC4A4 Na⁺-coupled acid-base transporter NBCe1

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.

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