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Information on EC 7.3.2.1 - ABC-type phosphate transporter

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EC Tree
IUBMB Comments
An ATP-binding cassette (ABC) type transporter, characterized by the presence of two similar ATP-binding domains/proteins and two integral membrane domains/proteins. A bacterial enzyme that interacts with an extracytoplasmic substrate binding protein and mediates the high affinity uptake of phosphate anions. Unlike P-type ATPases, it does not undergo phosphorylation during the transport process.
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UNIPROT: A8N031
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Word Map
The expected taxonomic range for this enzyme is: Bacteria, Archaea, Eukaryota
Reaction Schemes
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phosphate-[phosphate-binding protein][side 1]
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[phosphate-binding protein][side 1]
Synonyms
pit-1, phosphate transporter, npt2a, pho84, anion transporter 1, pit-2, pi transporter, slc20a1, glvr-1, pstscab, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
phosphate transporter
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ABC phosphate transporter
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ATP phosphohydrolase (phosphate-importing)
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phosphate specific transporter
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phosphate-specific transport system
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phosphate-transporting ATPase
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Pst
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REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
hydrolysis of phosphoric acid anhydride
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PATHWAY SOURCE
PATHWAYS
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SYSTEMATIC NAME
IUBMB Comments
ATP phosphohydrolase (ABC-type, phosphate-importing)
An ATP-binding cassette (ABC) type transporter, characterized by the presence of two similar ATP-binding domains/proteins and two integral membrane domains/proteins. A bacterial enzyme that interacts with an extracytoplasmic substrate binding protein and mediates the high affinity uptake of phosphate anions. Unlike P-type ATPases, it does not undergo phosphorylation during the transport process.
CAS REGISTRY NUMBER
COMMENTARY hide
9000-83-3
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SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
ATP + H2O + phosphate/out
ADP + phosphate + phosphate/in
show the reaction diagram
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?
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.025
phosphate
pH and temperature not specified in the publication, iPT belongs to the high affinity phosphate transporter family
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
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UniProt
Manually annotated by BRENDA team
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
localised to the external hyphae of Piriformospora indica colonized with maize plant root, which suggests that external hyphae are the initial site of phosphate uptake from the soil
Manually annotated by BRENDA team
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
malfunction
knockdown transformants of the gene are prepared using electroporation and RNAinterference. Knockdown transformants transport a significantly lower amount of phosphate to the host plant than wild-type. Higher amounts of phosphate are found in plants colonized with wild-type than that of non-colonized and plants colonized with knockdown PiPT
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
A8N031_SERIN
522
0
57741
TrEMBL
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MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
57700
calculated from cDNA
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
expressed in Escherichia coli
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Yadav, V.; Kumar, M.; Deep, D.K.; Kumar, H.; Sharma, R.; Tripathi, T.; Tuteja, N.; Saxena, A.K.; Johri, A.K.
A phosphate transporter from the root endophytic fungus Piriformospora indica plays a role in phosphate transport to the host plant
J. Biol. Chem.
285
26532-26544
2010
Serendipita indica (A8N031), Serendipita indica
Manually annotated by BRENDA team