Organism
Chlamydomonas reinhardtii
Function
ATPase required for the post-translational delivery of tail-anchored (TA) proteins to the chloroplast. Required for the accumulation of TOC34, an essential component of the outer chloroplast membrane translocon (TOC) complex (PubMed:23167510, PubMed:28382961). Recognizes and selectively binds the transmembrane domain of TA proteins in the cytosol. This complex then targets to chloroplast, where the tail-anchored protein is released for insertion. This process is regulated by ATP binding and hydrolysis (PubMed:28382961).
Similarity
Belongs to the arsA ATPase family.
Sequence
MALASGNRLGSARGQTCADASGRVAPRLLSRACSGSPLALGVLACLGAASSVKPHPRLPATTSAASAPLPARGPAPCAAVPTVVTPDNATGVFEELAAGQQRKYIMISGKGGVGKTSLSASLAVKLAAAGHTTLVVSTDPAHSLSDSLAQDVSGGRPVLLQGTDLPLWGLEIDPEEAKREFFEGSGAGQDGEAGGPSAASQVSDFMNRMGMGFVIDQLKELKLGELLNTPPPGLDEAVAIAKVVQFVQAAEYARFSRIVFDTAPTGHTLRLLALPDFVDASLAKVIRLRKKLNGATSVVRGLFGAGESQDEAVEKLELLQQRVRMVKALFRDKTQTEFIIATIPTYLGVNESSRLLQALRAEQIPCKRIIVNQIVGPQQGDAYLRMKMKDQIAALEMVANDPGLRPLRKVIAPMVDVEVRGVPALSYFGNVVWKDVYDQMNQGADRKFFLLGGKGGVGKTSCSSSLAVHFANDGLPTLVVSTDPAHSLSDAFDQDLSGGSPVKITSPLGDELPLWGLQLDPEQAKAELRAVLADDGGKKLNETLDGLGLGVISDQLKDLQLGELLDTPPPGVDEAIAIAKVVQFLKAPEYSHFKRIVFDTAPTGHTLRLLSLPDFLDASIGKLVRLRQKLSAATSAVKNLFSGGQPGEEDVAVKRLEALQASMEDAKAMFRNQQTTEFIIVTIPTVMATAESCRLASALQHEGIPLKTIIVNQVVQANATDKFLTARRADQARALHHLEEDTGPDGLASLQLIKAPLCDLEVRGVPALSYFGNVVWK