Function
Atypical E3 ubiquitin-protein ligase which specifically mediates ubiquitination of threonine and serine residues on target proteins, instead of ubiquitinating lysine residues (By similarity). Shows esterification activity towards both threonine and serine, with a preference for threonine, and acts via two essential catalytic cysteine residues that relay ubiquitin to its substrate via thioester intermediates (By similarity). Required in the presynaptic motoneuron to down-regulate the levels of wnd and restrain synaptic terminal growth at the neuromuscular junction (NMJ) together with Rae1 and Fsn (PubMed:10839352, PubMed:21874015, PubMed:17697379).
Sequence
MVGLLNPLKYGDHFYELYTNSTRRKMQHDRKVLTKRKSRKDKSAAAMAAAAAAAVLEGNAGAGGLVNPLDPPLVKEQLMILPSFPVAHIELDPNASKFAVFSAIRSTVLEAETRYSLFQEGGAPSGQSGSNQKKWSNNVNSACCMMCAHSCMISNLLDCSCHAHMAMHGAVGPGNAGPGGPVGVLVDGRIPAPVPVVVGGPGLPAEKRPRRDSANSDADSDTEEPTEREPVYATVPLIVGAGLRSLFELIADARHVHPLLCTKALKALLDVIQGQQPESFKLEPEELINPLYDLLLDLATMPAALNSATGAEANWSAMACAALLGLCIARGDTGKMLKAIAAMLMTPRQLSAQIVQLPVVLATLQHTVISAALNKPTRPDFHSHGVPHNSLIDEFPVKLPPLSTGAPITSPAMACDGVFVYLLYGGTLLKIGTGFGGSYKGHIYAQNEDFSHERSAWLGYSGGQLYFRRTCRRSAGDQLQMVGLDTLAIKAMSPLSMLHMREGLNYVLFTDDDSLHAICSNRDDTLVVKKLNLYHNSYNIDPPPFELPLQLARKKFRTLGYAAFEDELLNQYQIQRIQSAHNSFEPKLPAPCRDADVDVMGMACGKEFGLVRASNGRVYYYGKSAALGLKCVGRTPTLKLTELVISKAANIVHVAVGHDGIHALLVNDDGTVFFAGTARRGEDGDSSKNRRQPKAVKPKKMTKIDGHVVVHAACNNGTSAFVTKTGKLIMYGKDTAHCDAMGFVSELLEQHVTKVALGKAHCVALNAKGQLFSFGLNNKGQCGRIFNKLQPVKDVPPFASSSTAAACFASLLPLDKRLKLDFSTLCDYDDHNLVQGQCRVCVICRECTGYNVSCVSALNVPLDQRLAGSICPCGHGDAGCAKCGLCAACIALQDSDEAKTELKPPPSDVQQRQQRSKTLIMRRKERKGELETGAAGGGAATPTDLDKDPPRVAPLAPQLLQLTSSSPVVQVACGLHHTVVLTLAGEVYTFGSNQYGQLGSGDLQPVSGPVRVQVPGAISQVAAGSNHTVLLTSKGMVYTFGNYQKGQLGRLPSDYGLKPPPQDDDSPVGAGSDGGAGGSPTVAPVGMPGPERSQSPANVQPSGSKEMPPLLPVLTQRQKFLWNCSPGAVFGLGPCYGKKVTWIGANGDQTFIKIDESLITAQMLPKMHVVANKKTILLIPSIPLSFHTLSINRRDGSCTAHYRGQTNFVKLMQAQPEQQQPEINSNLDVAVTPVADSPAHASTSSLLAALTGTATAGVPINEQMSRSMHEARNQIFEEQLPEVGSSAAAAAVAAPGTPVSAGSVPRSRRGGKQGTSSPEPIPSPPQLAFTMDPTYNVLWVFDGAARKLRCHNVVASDINDSDANAATYRSLLSPELSLPDRVDSRVARSQASLNLLACLDILTSAQDNIPGCFEQPLLKQTQQTAETQAGEFQVVNRFDNFGGGWGYSGHSVEAIRFSADTDIVICGFGMFGGRGEYSCKLKLFDLGGDGGGYEKEGILISETKEVPYECGARSKHHILLPKPVSAVAGRWYLVWARIAGPSSDCGSCGQASVTTEDQVVFSFKSSKKANNGTDVNSGQIPAILYRLVTQDCKQTPAQMDADPVQRISRAFANSVSRECFESLVVLLSWSWDCFKLQLREERDRSRPLQLQQSLQYLGYVIKSCLRLLRKYTIEIYPQRNSSTSVATGGGSNAAHGSGVVTTAKSVQSKPNKDKNTPRVVGNAGVMAKYFGDPSTSVAPAMISSASSGGAPSTSASAAVAPGSGTPVTRKTNMENIQLAECIGNVRALLIGIFCDDIFKDIATDEGYELSLEILDECHLSFVACFDAFYPTSSLKWNCLCDLLAQMDRGALHSRLLSAILAGLCSPSVKLRATFSLLSAAGNERQSIISPSDNSGLPMLSSTDAHPYPVLVEQMIYRTQQEKSDFLSNSWTFKDVLVRLLDIIASPIRSRIEAIYSRSLGSLGYPGGKDCVNQGLIDNCCHLLARVLAEIVYQTAMGEYDKLFMPPRTLHSTGARFARCDVSRTWNTGNFGPDAIAFAVDRPGVAIAGAMVYSGSGSYDYQLELLYDNTADLQPQHKWETLESVSGSYDQDAVHNDLAEIKFDHPVHIKENARYALRLCSQGARTCSGDAGMPAVRGPCGAQFHFYACDLSFNGTTPARGQLPCILYYSTPMKQDGHSASGRTGDGSNVATHLEDRIMLLGPHEVSTRDTALQIAADITKKCTELLILARNAMAASCSPSDNSSNHTQTIDSEHNITPIEEHMDINWANNSRTAALPTAIDPQLSTARDLGKRIESFSKGLMETLKFDKRSTNPFEMEIEIGATEVEESADLRNGQSQSVSQSQSQSQSVPINGNERTADFEFAEQSAQQSMPQHLHSDSEEAPLEVAGMAAGGGVSVADGSGGVAGVGSQAAAVQLLEVFNLAASNMFHTLLPLVYAHIANLACSDPKSSVQILGLIKEILPHIAALNQLHVSKDQRQPEPAIFATQTSGSGNSNSSSTTSNHYCVVESDHPYKSASISSYRVEFPPCVQWLTIEFDPQCGTAQLEDYLLLSIPMRPASQAPPVPHVDDYLEQADNNVNGAGDRRRNTGGGIAGSGAAPNTHQRSASVQLTMASCCRSPGCGNAPGSAAAPSSMPLRSQDPNDREWIVVKKFNTASTWLHNVLILPGNCVEFSLETASLYAQDPHNNRYGFKCLVVGYDNPTSINASNSCLIRLEQELAYLGGMCSANLMKKELNLPDDKDVEDMSGIEETINTHHTLLSKGFALSEPQLTVHQALESYLPIGSQSNERQFLKDFISGAPGSSGARLAAWLQPESRLDPNKCELNTITEPLRYGWPSQVTVTIRDQYGDAVLVPELKVEIKAIPTGSGPNGSATGTGTSCTSVAEVSAPGPNLWMRRASRDTWGWGGMAPPPRINYEPTVKDKMVFKAITFMKPYANYSFEELRYASPVQTRVTELLNAKDMEDGTFSVQWTPSSVGAYCLAVTIDGIPLEEVYRVDVKEGILPPPTQRNSAQRRPQAPSKLRRFQARHSSGLRIRSHPTLQSEQVGVVRVGGVISFIDEIENDDGVWLRLSTESIRQHCTMGWYPTEAWCLQFNQHLARMLLQPVTDKEVNPVRKGVGAEEDVEEQPPVTPSASGEASPEPEPDPSPVLSPAKTKPGRFLSGHQSTNPFLYPAKHADLAEREAQVQEEREKEEEQVDDEDADDREPEQEALPAVELLPAHIGSAIAGVVGGGAIKLQALQKWFKGDAVDGPQPLTPSHSPPLAGVSVRELVRAMGGQDSPRGNGNRSQQEQDPEFSLASMRRPNYSASQTAALLSTPKHTPKRSAVVASETSGLEDELSLLQITTTTTGQGEQQSELQLATTSTASSASKRNPMGPIKRAMPPSFAESIRAVFAALLWHEGVVHDAMACASFLKFHPGLPKEGATVVTRRGESGDPRLQLSREQKAQQRHSVEVANAGNYLNIRPSTLETLTKSGNCSLHNRSKYRKNLLSGGGGAINSGDDTAQKLQALPEMVSVLPPALRCLVYLWEQICSGCVQIVQSNALEQREPRLLSPGSRDLNGDADTEGKEGKNSDQASAGEKDLGRKCKRKKKDDGSWCEICELFLPMPVTYHMRIAHPGCGKSAKGKGYNSVGIFCEGWAGNCGEGGKGASSWFLMCDPCRDRYLASCRSANNINSAARQLESSAAEGNELNLFGVKSTTLIANAEVYTTMRENATFLLELCSSSSSASGAAGSLAATSSSSKRSPQQMSVVAMPVVIEHQLGNSDLKPSTSRCSRMARLSGSKFCPGVGSGAFRKSFVGGPPTAPENVWLAPESFACLECLGTAGHEDLPYEMFGLGPNSNDNGYDRPLSEISYESCEPNNYDMLSGSLAPGTTAAASVGGGNLSKFHRSYSMGQGWASLAQHNHPPPHHPQQQHHQQQQMNLQLQQHQAPPVDGQPKVVYRRRNNSTSEGDGSLLICYPSEHLRRLVPQKLLASVSVMQTASGEGTGKDHATGTLGLDQSAGQNGGGNLLLTRPAMAFITQKHELDRLRAAMRRSLRIAACRIYALQALNWLLRSVTQGVCLHDLMWWFVSSLNPTGGHQPVERGEEASEPALEHPVAYTQISGRFAHLITQSLHVFLQSVADLTLHLPLGSPLQRVAIQCFGIRFRQADHQFLHSSHVFGNISKILSKSDEQNDAMAVSTILKPDCDVEHNQVHSVATGGSSGAGARLLCYTDLAGMFEVTVSSRPAMAESLTDNSTETFWESDEEDRNKCKIIELSLTKLNYACRYLLVHIDNSRDIQNKVLNVVFYAGQSLGDTNIIKSADVDPKACSWISAKICDDSCTHFRLELHGPENTLRVRQIKLLGLPIGGAVGSDDSSDHKHQPHLRLSHASRIQQQICEAETLRVFRLITGQVFGKLISNVSSDLVPPDSAGIGPPSGGAASTSLLADSLDLREHMVGILFSRSKLSHLQKQVIVHIVHAIRKEAQRAKEDWELANLAHVLKQSPQQQTAPALAASASCESTPERSRAPDTYCFEMLSMVLALSGSVVGRSYLSQQHGLLRDLLGLLHTGSDRVQRQVTALLRRILPEITPESFAELLGVQRLPPADYSIAHQSASDFDMSRLGLLDIFLAVIAKSLQLQVKVKTTVASTGPSGSGGVSGSSSGNGGAVLKAGQQEKTPAFVRLWSSLDLSVQQLRSRPPTGEPGTTDPFQFDALPPRKESKRNLNQRWFLNGVISTKQAESIISLIRDLASGKLSEKWSQITKAAIAESVLNLTRLEEIYRSPEHCTKTSTLWLALASLCVLERDHVEKLSSGQWSKLCDTRPLCSNHDDGETAAIIQCETCGSLCGDCDRFLHLNRKTRSHKRTVCKEEEEAIRVELHESCGRTKLFWLLALADSKTLKAMVEFRDGSHTIISGPQEAVGRCRFCGLTGNSGLLEIGNVCADAQCQEYAANSCLKTKPCGHACGGVTGERKCLPCLQHVCHTRENELAEELRDPKLTQDADDMCMICFVEALSCAPSIHLECGHVFHYHCCKAVLEKRWSGPRITFGFSLCPICKADIQHPLLSDILEPINGLKQDVKRKALMRIKYEGVVKDTDSKNVNMTQLAMDRYAYYVCFKCQKAYYGGEARCDAEIGEKFDPEELVCGGCSDVARAQMCPKHGTDFLEYKCRYCCSVAVFFCFGTTHFCDTCHDDFQRLTNIPKVKLPQCPAGPKAKQLLGDECPLHVMHPPTGEEFALGCGVCRNAQTF