Protein: ATG2B_HUMAN
Sequence: MPWPFSESIKKRACRYLLQRYLGHFLQEKLSLEQLSLDLYQGTGSLAQVPLDKWCLNEILESADAPLEVTEGFIQSISLSVPWGSLLQDNCALEVRGLEMVFRPRPRPATGSEPMYWSSFMTSSMQLAKECLSQKLTDEQGEGSQPFEGLEKFAETIETVLRRVKVTFIDTVLRIEHVPENSKTGTALEIRIERTVYCDETADESSGINVHQPTAFAHKLLQLSGVSLFWDEFSASAKSSPVCSTAPVETEPKLSPSWNPKIIYEPHPQLTRNLPEIAPSDPVQIGRLIGRLELSLTLKQNEVLPGAKLDVDGQIDSIHLLLSPRQVHLLLDMLAAIAGPENSSKIGLANKDRKNRPMQQEDEYRIQMELNRYYLRKDSLSVGVSSEQSFYETETARTPSSREEEVFFSMADMDMSHSLSSLPPLGDPPNMDLELSLTSTYTNTPAGSPLSATVLQPTWGEFLDHHKEQPVRGSTFPSNLVHPTPLQKTSLPSRSVSVDESRPELIFRLAVGTFSISVLHIDPLSPPETSQNLNPLTPMAVAFFTCIEKIDPARFSTEDFKSFRAVFAEACSHDHLRFIGTGIKVSYEQRQRSASRYFSTDMSIGQMEFLECLFPTDFHSVPPHYTELLTFHSKEETGSHSPVCLQLHYKHSENRGPQGNQARLSSVPHKAELQIKLNPVCCELDISIVDRLNSLLQPQKLATVEMMASHMYTSYNKHISLHKAFTEVFLDDSHSPANCRISVQVATPALNLSVRFPIPDLRSDQERGPWFKKSLQKEILYLAFTDLEFKTEFIGGSTPEQIKLELTFRELIGSFQEEKGDPSIKFFHVSSGVDGDTTSSDDFDWPRIVLKINPPAMHSILERIAAEEEEENDGHYQEEEEGGAHSLKDVCDLRRPAPSPFSSRRVMFENEQMVMPGDPVEMTEFQDKAISNSHYVLELTLPNIYVTLPNKSFYEKLYNRIFNDLLLWEPTAPSPVETFENISYGIGLSVASQLINTFNKDSFSAFKSAVHYDEESGSEEETLQYFSTVDPNYRSRRKKKLDSQNKNSQSFLSVLLNINHGLIAVFTDVKQDNGDLLENKHGEFWLEFNSGSLFCVTKYEGFDDKHYICLHSSSFSLYHKGIVNGVILPTETRLPSSTRPHWLEPTIYSSEEDGLSKTSSDGVGGDSLNMLSVAVKILSDKSESNTKEFLIAVGLKGATLQHRMLPSGLSWHEQILYFLNIADEPVLGYNPPTSFTTFHVHLWSCALDYRPLYLPIRSLLTVETFSVSSSVALDKSSSTLRIILDEAALHLSDKCNTVTINLSRDYVRVMDMGLLELTITAVKSDSDGEQTEPRFELHCSSDVVHIRTCSDSCAALMNLIQYIASYGDLQTPNKADMKPGAFQRRSKVDSSGRSSSRGPVLPEADQQMLRDLMSDAMEEIDMQQGTSSVKPQANGVLDEKSQIQEPCCSDLFLFPDESGNVSQESGPTYASFSHHFISDAMTGVPTENDDFCILFAPKAAMQEKEEEPVIKIMVDDAIVIRDNYFSLPVNKTDTSKAPLHFPIPVIRYVVKEVSLVWHLYGGKDFGIVPPTSPAKSYISPHSSPSHTPTRHGRNTVCGGKGRNHDFLMEIQLSKVKFQHEVYPPCKPDCDSSLSEHPVSRQVFIVQDLEIRDRLATSQMNKFLYLYCSKEMPRKAHSNMLTVKALHVCPESGRSPQECCLRVSLMPLRLNIDQDALFFLKDFFTSLSAEVELQMTPDPEVKKSPGADVTCSLPRHLSTSKEPNLVISFSGPKQPSQNDSANSVEVVNGMEEKNFSAEEASFRDQPVFFREFRFTSEVPIRLDYHGKHVSMDQGTLAGILIGLAQLNCSELKLKRLSYRHGLLGVDKLFSYAITEWLNDIKKNQLPGILGGVGPMHSLVQLVQGLKDLVWLPIEQYRKDGRIVRGFQRGAASFGTSTAMAALELTNRMVQTIQAAAETAYDMVSPGTLSIEPKKTKRFPHHRLAHQPVDLREGVAKAYSVVKEGITDTAQTIYETAAREHESRGVTGAVGEVLRQIPPAVVKPLIVATEATSNVLGGMRNQIRPDVRQDESQKWRHGDD
What is the function of this protein?
Lipid transfer protein required for both autophagosome formation and regulation of lipid droplet morphology and dispersion (PubMed:22219374, PubMed:31721365).  Tethers the edge of the isolation membrane (IM) to the endoplasmic reticulum (ER) and mediates direct lipid transfer from ER to IM for IM expansion (PubMed:22219374, PubMed:31721365).  Binds to the ER exit site (ERES), which is the membrane source for autophagosome formation, and extracts phospholipids from the membrane source and transfers them to ATG9 (ATG9A or ATG9B) to the IM for membrane expansion (By similarity).  Lipid transfer activity is enhanced by WDR45/WIPI4, which promotes ATG2B-association with phosphatidylinositol 3-monophosphate (PI3P)-containing membranes (PubMed:31721365).
What are the official names of this protein?
Autophagy-related protein 2 homolog B.
What is the protein family that this protein belongs to?
Belongs to the ATG2 family.
What are the subcellular locations of this protein?
Preautophagosomal structure membrane; Peripheral membrane protein. Lipid droplet. Endoplasmic reticulum membrane; Peripheral membrane protein.