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Information on EC 7.3.2.7 - arsenite-transporting ATPase and Organism(s) Homo sapiens and UniProt Accession O43681
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7.3.2.7 arsenite-transporting ATPaseIUBMB Comments
This bacterial transporter does not belong to the ABC superfamily, and instead is a member of its own family, referred to as the Ars family. The enzyme usually contains two subunits where one (with 12 membrane-spanning segments) forms the 'channel' part and the other (occurring in pairs peripherally to the membrane) contains the ATP-binding site. It forms an arsenite efflux pump that removes arsenite from the cytoplasm, and can also remove antimonite anions.
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The taxonomic range for the selected organisms is: Homo sapiens
The expected taxonomic range for this enzyme is: Bacteria, Eukaryota, Archaea
The expected taxonomic range for this enzyme is: Bacteria, Eukaryota, Archaea
Synonyms
asna1, arsa atpase, asna-1, arsab, arsab pump, giarsa, arsab extrusion pump, arsab as(iii) efflux pump, riarsb, arsenite-translocating atpase, 
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topSYNONYM 
ORGANISM
UNIPROT
COMMENTARY 
LITERATURE
ARSA
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Arsenical resistance ATPase
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Arsenite-translocating ATPase
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Arsenite-transporting ATPase
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ATP-dependent arsenite pump
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REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
hydrolysis of phosphoric ester
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PATHWAY SOURCE
PATHWAYS
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-, -, -, -
SYSTEMATIC NAME
IUBMB Comments
ATP phosphohydrolase (arsenite-exporting)
This bacterial transporter does not belong to the ABC superfamily, and instead is a member of its own family, referred to as the Ars family. The enzyme usually contains two subunits where one (with 12 membrane-spanning segments) forms the 'channel' part and the other (occurring in pairs peripherally to the membrane) contains the ATP-binding site. It forms an arsenite efflux pump that removes arsenite from the cytoplasm, and can also remove antimonite anions.
CAS REGISTRY NUMBER
COMMENTARY
9000-83-3
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SUBSTRATE
PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
additional information
?
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ASNA1, an ATPase targeting tail-anchored proteins, regulates melanoma cell growth and sensitivity to cisplatin and arsenite. ASNA1 is also an essential ATPase for the insertion of tail-anchored proteins into endoplasmic reticulum membranes and a regulator of insulin secretion. ASNA1 expression is necessary for growth.
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?
additional information
?
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ASNA1, an ATPase targeting tail-anchored proteins, regulates melanoma cell growth and sensitivity to cisplatin and arsenite. ASNA1 is also an essential ATPase for the insertion of tail-anchored proteins into endoplasmic reticulum membranes and a regulator of insulin secretion. ASNA1 expression is necessary for growth.
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NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
additional information
?
-
ASNA1, an ATPase targeting tail-anchored proteins, regulates melanoma cell growth and sensitivity to cisplatin and arsenite. ASNA1 is also an essential ATPase for the insertion of tail-anchored proteins into endoplasmic reticulum membranes and a regulator of insulin secretion. ASNA1 expression is necessary for growth.
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-
?
additional information
?
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-
ASNA1, an ATPase targeting tail-anchored proteins, regulates melanoma cell growth and sensitivity to cisplatin and arsenite. ASNA1 is also an essential ATPase for the insertion of tail-anchored proteins into endoplasmic reticulum membranes and a regulator of insulin secretion. ASNA1 expression is necessary for growth.
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COFACTOR
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
IMAGE
ORGANISM
COMMENTARY
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
SOURCE
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION
The reliability class of the localization prediction ranges from 1 (very reliable) to 5 (not reliable).
The reliability class of the localization prediction ranges from 1 (very reliable) to 5 (not reliable). PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
additional information
additional information
T-289 clones with siRNA decreased ASNA1 expression exhibit 51% longer doubling times than wild-type T-289 cells. After exposure to cisplatin, ASNA1 downregulated cells display a significant increase in apoptosis. The cisplatin IC50 in ASNA1 underexpressing cells is 41.7% of the IC50 for wild-type cells, and the arsenite IC50 is 59.9% of wild-type IC50. Phenotypes, overview
additional information
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T-289 clones with siRNA decreased ASNA1 expression exhibit 51% longer doubling times than wild-type T-289 cells. After exposure to cisplatin, ASNA1 downregulated cells display a significant increase in apoptosis. The cisplatin IC50 in ASNA1 underexpressing cells is 41.7% of the IC50 for wild-type cells, and the arsenite IC50 is 59.9% of wild-type IC50. Phenotypes, overview
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
transfection of T-289 melanoma cells with either ASNA1 sense or ASNA1 antisense constructs, expression analysis
REF.
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JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
EXTERNAL LINKS (specific for EC-Number 7.3.2.7)
Transporter Classification Database (TCDB): 3.A.4.1.1, 3.A.19.1.3
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Release 2023.1 (January 2023)
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