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Patronin

Gene
Patronin
Protein
Patronin
Organism
Drosophila melanogaster
Length
1630 amino acids
Function
Involved in mitotic spindle assembly (PubMed:17412918, PubMed:26246606). Regulates microtubule (MT) severing (PubMed:17412918). Antagonizes the activity of the kinesin-13 depolymerase Klp10A thereby switching off the depolymerization of the MTs at their pole-associated minus ends, which turns off poleward flux and induces anaphase B spindle elongation (PubMed:20946984, PubMed:24100293). Involved in asymmetric cell division of sensory organ precursor (SOP) cells by playing a role in the asymmetric localization of Sara-expressing endosomes to the pIIa daughter cell but not to the pIIb cell. Klp98A targets Sara-expressing endosomes to the central spindle which is symmetrically arranged in early cell division. During late cytokinesis, central spindle asymmetry is generated by enrichment of Patronin on the pIIb side which protects microtubules from depolymerization by Klp10A while unprotected microtubules on the pIIa side are disassembled by Klp10A, leading to the asymmetric delivery of Sara-expressing endosomes to the pIIa daughter cell (PubMed:26659188).
Similarity
Belongs to the CAMSAP1 family.
Mass
183.622 kDa
Sequence
MDVETQEIRQARQRASVKWLLSKAFNNRVPDNLKEPFYRDHENQERLKPQIIVELGNATLYCQTLANLYSDPNYQSMNHWSIIQTLARKGVPVAESADMPITETVLIQTNPLRINAHMSVIESLMVLYAKEISSGDRVMAAIRRISGNNYQAPTGQSYEQALLGWISHACAALKKRIIKEVDAGLPDDNGSRLQTPDIPPVRDFQDLCDGICLALLISYYCPKVVPWTSVRINYLPAVEDSIHNILLVCNFSQKHLPYTVMHMTPEDVTYMRGSMKLNLVVLLTDLFNLFEIHPAKCVCYPGMDGQVPHSNSFGGGLNRRSTPPNEYQTVQSNNFDGNHAEAFVVHKSRGITTLASMHSQQQQQLHQQQQHQQQYHQQPLQQHPSQSQLQIQQQEPLVPARLRQAKEKTNVESKADERGRRSRRNSSSEDSQLTIENFGGSQDQLNTLGRYERDRERKLSNTSVGSYPVEPAVAVRSSIADARGTLQLGYDTDSGSEKQDRETEKYSMRRQVSVDNVPTVSSHNLSNAGSPLPVARHKQHSSDKDYSSNSGMTPDAYNDSRSTSGYDPESTPVRKSSTSSMPASPAAWQLDVGDDDMRSLENASKLSTIRMKLEEKRRRIEQDKRKIEMALLRHQEKEDLESCPDVMKWETMSNESKRTPDMDPVDLDKYQQSIAIMNMNLQDIQQDIHRLATQQSQMQAQHLQAQQLMQAQQIANMLNQAYNAPVSAYSSRPPSRDPYQQQLHHQQQQPMPMPQPMQYVNEHGQYMSPPQPAHYMPQQAQQPQSIYSDNGAAYNHSNHSPYGGTPQYRSSVVYDDYGQPTNHFYLHESSPQPQAHQHPQRRTWAHSAAAAAYEQQQQIQPSLVDVNAWQTQQHQKQKQTWMNRPPSSAGAPSPGSFMLHQNGGGGGGGGGGGELQHLFQVQASPQHGQRQVSGSNGVQRQQSLTNLRDNRSPKAPQNMGMPMGMPMQQEDMMAPQSICFIGDEEDVDELERNIIESMQSTHISDFVHQQQQQHQHQQQLQQQQRLQGHSGRGSSSEDYDSGEMISNKLNITSGNLTYRIPSPSRPSIQANSFQDPRAMAAASGGEDQPPEKGFYISFDDEQPKRPKPPLRAKRSPKKESPPGSRDSVDNQATLKRESLSHLHNNNNIGFGNDDVNSKPVTRHSIHGLNNSNSVKSPGNATYNKYTDEPPIQLRQLAVSGAMSPTSNERHHLDDVSNQSPQQTQQPMSPTRLQQSSNNAEAAKNKALVIGADSTNLDPESVDEMERRKEKIMLLSLQRRQQQEEAKARKEIEASQKREKEREKEEERARKKEEQMARRAAILEQHRLKKAIEEAEREGKTLDRPDLHVKLQSHSSTSTTPRLRQQRTTRPRPKTIHVDDASVDISEASSISSRGKKGSSSNLTGYGQLSSNSMKRDYYRGSQDSLTVKESPDDYPSTSSTPIGRRGSYKTSREPAGVERGRTLSRISVAKGSTLNFRGRKSNSLMNLCGPKLYKQPAAKSNRGIILNAVEYCVFPGVVNREAKQKVLEKIARSEAKHFLVLFRDAGCQFRALYSYQPETDQVTKLYGTGPSQVEEVMFDKFFKYNSGGKCFSQVHTKHLTVTIDAFTIHNSLWQGKRVQLPSKKDMALVI