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Details on Person UniProt:Q9Y2G3 ATP11B

Class:IdReferenceGeneProduct:49216
_chainChangeLogchain:1-1177 added on Fri February 6 2015
_displayNameUniProt:Q9Y2G3 ATP11B
_timestamp2026-02-20 22:52:08
chainchain:1-1177
checksum665110145457B220
commentFUNCTION Catalytic component of a P4-ATPase flippase complex which catalyzes the hydrolysis of ATP coupled to the transport of aminophospholipids, phosphatidylserines (PS) and phosphatidylethanolamines (PE), from the outer to the inner leaflet of intracellular membranes (PubMed:30018401). May contribute to the maintenance of membrane lipid asymmetry in endosome compartment (PubMed:30018401).CATALYTIC ACTIVITY ATP + H2O + phospholipidSide 1 = ADP + phosphate + phospholipidSide 2.CATALYTIC ACTIVITY a 1,2-diacyl-sn-glycero-3-phospho-L-serine(out) + ATP + H2O = a 1,2-diacyl-sn-glycero-3-phospho-L-serine(in) + ADP + phosphate + H(+)CATALYTIC ACTIVITY a 1,2-diacyl-sn-glycero-3-phosphoethanolamine(out) + ATP + H2O = a 1,2-diacyl-sn-glycero-3-phosphoethanolamine(in) + ADP + phosphate + H(+)COFACTOR The ATPase activity is up-regulated by aminophospholipids PS and PE.BIOPHYSICOCHEMICAL PROPERTIES Component of a P4-ATPase flippase complex which consists of a catalytic alpha subunit ATP11B and an accessory beta subunit TMEM30A.SUBCELLULAR LOCATION Exit from the endoplasmic reticulum requires the presence of TMEM30A, but not TMEM30B (PubMed:21914794). In the presence of TMEM30A, mainly located in recycling endosomes (PubMed:21914794).SIMILARITY Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IV subfamily.SEQUENCE CAUTION Intron retention.
descriptionrecommendedName: Phospholipid-transporting ATPase IF ecNumber evidence="8"7.6.2.1 alternativeName: ATPase IR alternativeName: ATPase class VI type 11B alternativeName: P4-ATPase flippase complex alpha subunit ATP11B
geneNameATP11B
ATPIF
ATPIR
KIAA0956
identifierQ9Y2G3
isSequenceChangedFALSE
keywordATP-binding
Endoplasmic reticulum
Endosome
Golgi apparatus
Lipid transport
Magnesium
Membrane
Metal-binding
Nucleotide-binding
Phosphoprotein
Proteomics identification
Reference proteome
Translocase
Transmembrane
Transmembrane helix
Transport
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9841277] Weiser, Joel
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9939033] Weiser, Joel, 2025-02-21
[InstanceEdit:9983091] Weiser, Joel, 2026-02-20
nameATP11B
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:8991140] ENSEMBL:ENSG00000058063 ATP11B [Homo sapiens]
secondaryIdentifierAT11B_HUMAN
Q96FN1
Q9UKK7
sequenceLength1177
species[Species:48887] Homo sapiens
(referenceEntity)[EntityWithAccessionedSequence:939755] ATP11B [plasma membrane] [Homo sapiens]
[EntityWithAccessionedSequence:6798770] ATP11B [azurophil granule membrane] [Homo sapiens]
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