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FAB1B

Gene
FAB1B
Protein
1-phosphatidylinositol-3-phosphate 5-kinase FAB1B
Organism
Arabidopsis thaliana
Length
1791 amino acids
Function
The PI(3,5)P2 regulatory complex regulates both the synthesis and turnover of phosphatidylinositol 3,5-bisphosphate (PtdIns(3,5)P2). Catalyzes the phosphorylation of phosphatidylinositol 3-phosphate on the fifth hydroxyl of the myo-inositol ring, to form phosphatidylinositol 3,5-bisphosphate (By similarity). Plays an important role in maintenance of endomembrane homeostasis including endocytosis, vacuole formation, and vacuolar acidification processes. Required for development of viable pollen. Might mediate recycling of auxin transporters.
Mass
200.831 kDa
Sequence
MGTRDSNNRTFSEIVGLIKSWLPWRSEPATVSRDFWMPDQSCRVCYECDCQFTLINRRHHCRHCGRVFCGKCTANSIPFAPSDLRTPREDWERIRVCNYCFRQWEQGDGGPHVSNITELSTSPSETSLLSSKTSTTANSSSFALGSMPGLIGLNQRVHHGSDVSLHGVSSMETSVTKQGKETSRRSSFIATDVEDPSRFALNSIRSDDEYDEYGAYQTDIETSHSPRANEYYGPMEYNGMGIDDVPCKHLGGETADQKSLSGSPLIHQCLESLIREGSEQFQKKSEHDGRDECEASSPADISDDQVVEPVDFENNGLLWVPPEPENEEDERESALFDEEDNEGDASGEWGYLRPSTSFGSGEYRGEDRTTEEHKKAMKNVVDGHFRALLAQLLQVENISVSDEEGKESWLEIITSLSWEAANLLKPDMSKSGGMDPGGYVKVKCLASGFRHDSMVVKGVVCKKNVVNRRMSTKIEKARLLILGGGLEYQRVSNQLSSFDTLLQQEKDHLKMAVAKIHAERPNILLVEKSVSRFAQEYLLAKDISLVLNIKRPLLDRIARCTGAQIIPSVDHLSSQKLGYCENFRVDRYPEEHGSTGQVGKKVVKTLMYFEHCPKPLGFTILLRGANEDELKKVKHVVQYGVFAAYHLALETSFLADEGASPELPLNSPITVALPDKSTSIERSISTVPGFTVSTYEKSPTMLSCAEPQRANSVPVSELLSTTTNLSIQKDIPPIPYGSGWQAREINPSFVFSRHNISLNLPDRVIESRNSDLSGRSVPVDTPADKSNPIVVADETTNNSLHLSGQGFVRKSSQIGTSIMVENQDNGSELTIAQQQNNEKPKETQSQKEEFPPSPSDHQSILVSLSSRSVWKGTVCERSHLFRIKYYGSFDKPLGRFLRDHLFDQSYRCRSCEMPSEAHVHCYTHRQGSLTISVKKLQDYLLPGEKEGKIWMWHRCLRCPRLNGFPPATLRVVMSDAAWGLSFGKFLELSFSNHAAASRVACCGHSLHRDCLRFYGFGNMVACFRYATIDVHSVYLPPSILSFNYENQDWIQRETDEVIERAELLFSEVLNAISQIAEKGFRRRIGELEEVLQKEKAEFEENMQKILHREVNEGQPLVDILELYRIHRQLLFQSYMWDHRLINASTLHKLENSDDTKREENEKPPLAKSQTLPEMNAGTNSLLTGSEVNLNPDGDSTGDTGSLNNVQKEADTNSDLYQEKDDGGEVSPSKTLPDTSYPLENKVDVRRTQSDGQIVMKNLSATLDAAWIGERQTSVEIPTNNKVSLPPSTMSNSSTFPPISEGLMPIDLPEQQNEFKVAYPVSPALPSKNYENSEDSVSWLSVPFLNFYRSINKNFLLSSQKLDTFGEHSPIYISSFREAELQGGPRLLLPVGLNDIVVPVYDDEPTSMIAYALMSPEYQRQTSAEGESLVSYPSELNIPRPVDDTIFDPSRSNGSVDESILSISSSRSTSLLDPLSYTKALHARVSYGEDGTLGKVKYTVTCYYAKRFEALRGICLPSELEYIRSLSRCKKWGAQGGKSNVFFAKTLDDRFIIKQVTKTELESFIKFAPAYFKYLSESISTKSPTCLAKILGIYQVATKQLKSGKETKMDVLIMENLLFGRTVKRLYDLKGSSRARYNPDSSGSNKVLLDQNLIEAMPTSPIFVGNKAKRLLERAVWNDTAFLALGDVMDYSLLVGVDEEKNELVLGIIDFLRQYTWDKHLESWVKFTGILGGPKNEAPTVISPKQYKRRFRKAMTTYFLMVPDQWSPPNVVANNSKSDQPEETSQAGTQAE