Protein
Coiled-coil domain-containing protein 39
Organism
Chlamydomonas reinhardtii
Function
Required for assembly of dynein regulatory complex (DRC) and inner dynein arm complexes, which are responsible for ciliary beat regulation, by acting as a molecular ruler that determines the 96 nanometer (nm) repeat length and arrangements of components in cilia and flagella (PubMed:25395538). Together with CCDC40/FAP172 forms a 96-nm-long complex in flagella. This complex does not act as a physical ruler, but rather act as a negative regulator for radial spokes: the complex lays along specific protofilaments, masking radial spoke binding sites and allowing recruitment of inner dynein arm (IDA) and nexin-dynein regulatory complexes (N-DRC) (PubMed:25395538).
Similarity
Belongs to the CCDC39 family.
Sequence
MANIDPYRTEEELVEDDEEVDMSFLPPFAKGTENEVLYVENARMERRLERTERALETNMDRLHIMDEHLKNVQQELKYTQTRVEAKNKEIESEKHLNAMAEREMGRLKKDIGKMEAERQELADKINGLQNQIYKNNEKLDQFKMLMNWNQEELEQWALAERQKAEDNAALEKYRHADDGKVKELTLALERVSKQVVGRKEELEAEVVETQAAQIQLDKAAEDFRKLHVERQDLIRQWEEAVEAMRHRDAAIAAASEQFAMQKDVLRERKRELDAQARFLENETLNTKEADARVAYYEREVGKQRDVLAREQARTEELNNQVELVKATLSKAATELAQRTVENKQAREDLDAKRQKLDAARKRFVVLKRKLENEFGNLDSMEAKASELEAMRRGEEARLKAILKEHELLKKEQYKRSQVLFDLRQKERELISEISGGQGQNKNLAARIHALDEQVVARAGGVRSEEETRALNARIEKLTAILEGVKRAEDDLLAARRANTSLRADRAKLDETISTLKLENDMVSRQVKGSVEAREKALVDHDVLALEVKRLRDILAAHADEVFSLENRKQQLALSMEERKQEVEVHRDGLRAELRLLREDVHRITLELKERLLRCEKLQAKFEIISAKHRGSGEDDGEERTQAYYVIKAAQEREALQREGDDLDGRIRVAEKEVAALEATLAQLMAVNTNFAASYKKVGSKEAFEERAALRDKLDKAYDKLKARRADEAAIAGDIQVSEARLSNLGQEQRSLQALVDDMTRRKAEAQRQLDEQREKLGRALGRTDKLRQKLGLANSPQGADVELAEVRDVTRAMLLELKALALANPGAMIAEACEAAGIRLPSGGSNPPSLGGSRPGSARSQTSLGSVRSARSVASQQRGGMGGSPAVRTIQLGA