Function
Together with BCAR1 it may play a role in the control of epithelial cell polarity. Involved in the organization of apical junctions in kidney cells, together with NPHP4 and RPGRIP1L/NPHP8 (PubMed:21565611). Does not seem to be strictly required for ciliogenesis (PubMed:19208653). Seems to help to recruit PTK2B/PYK2 to cell matrix adhesions, thereby initiating phosphorylation of PTK2B/PYK2 and PTK2B/PYK2-dependent signaling (PubMed:11493697). May play a role in the regulation of intraflagellar transport (IFT) during cilia assembly (PubMed:19208653). Required for normal retina development (PubMed:19208653). In connecting photoreceptor cilia influences the movement of some IFT proteins such as IFT88 and WDR19 (PubMed:19208653). Involved in spermatogenesis; required for the differentiation of early elongating spermatids into spermatozoa (PubMed:18684731).
Similarity
Belongs to the nephrocystin-1 family.
Sequence
MLARRPRDPLQALRRRGQELKLQVDSLVTESQLTGALEPSKRREIYQRCIQLKQAVDENKNTLQKLNKADEAAPVGNYEQRKEEEHSLLEKLACQLQELAVSISRKDALKVEAHSDKEEDDTTEDDEEETGGEEEESEGDGEGKQEQASPKQAETETVTYIALGDFAAQQTGDLTFKKGDVLHIIEKKPDGWWLAKDAEGVEGLIPRTYLEPYNKEDKLESSEGSEEGGEEDGEEDVEVVDETADGAQVKQRTDSHWSAVRKAISEQINTVDVLATMGAIPAGFRPSTLSQLLDEAGNQFRASYFLQPELTTSQLAFRDLTWDAKAGTIMSRPSRVSLILTLWSCKMIPLPGTSIQVLSRHIRLCLFDGSKVLSNIHTVRAVWQPKKPKTWTFSPQVTGILPCLLDGDCFIRSNSSTPDLGILFELGISYIRNSTGERGELSCGWVFLKLFDASGVPIPAKTYELFLNGGTPYEKGVEVDPSVSRRAQGSVFRQMISVRRQPQLLVKLRSLNRRSRAMLSLLPETLVGSMCSAHLLIFYRQILGDVLLRDRTNLQSADLISHPVLATFPLLLEQPDVMDALRSSWSEKESTLKRAEKRDKELLKAEFLLVYHDCVLPLLHSTLLPPFRWAEEETEAARWKAIADFLKQSRENEGSLKALLSPDGVHKPFDLSEQTFDFLGEIRKNSG