title: Identification of a chloroplast-encoded secA gene homologue in a chromophytic alga: possible role in chloroplast protein translocation.
abstract: SecA is one of seven Sec proteins that comprise the prokaryotic protein translocation apparatus. A chloroplast-encoded secA gene has been identified from the unicellular chromophytic alga Pavlova lutherii. The gene predicts a protein that is related to the SecA proteins of Escherichia coli and Bacillus subtilis. The presence of secA, as well as the previously described secY and hsp70 genes, on the chloroplast genome of P. lutherii suggests that this eukaryotic organism utilises protein translocation mechanisms similar to those of bacterial cells.
authors.affiliation: School of Biological Sciences, Macquarie University, Sydney, NSW, Australia.
authors.forename: C D
authors.initials: CD
authors.lastname: Scaramuzzi
authors.forename: R G
authors.initials: RG
authors.lastname: Hiller
authors.forename: H W
authors.initials: HW
authors.lastname: Stokes
mesh_terms: D000251:Adenosine Triphosphatases / Q000235:genetics* / Q000378:metabolism; D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism; D001483:Base Sequence; D001692:Biological Transport; D002736:Chloroplasts / Q000378:metabolism*; D003001:Cloning, Molecular; D004247:DNA; D029968:Escherichia coli Proteins; D056890:Eukaryota / Q000378:metabolism*; D006360:Heat-Shock Proteins / Q000235:genetics; D026901:Membrane Transport Proteins; D008969:Molecular Sequence Data; D011506:Proteins / Q000378:metabolism*; D015183:Restriction Mapping; D000069816:SEC Translocation Channels; D000081416:SecA Proteins; D017386:Sequence Homology, Amino Acid
chemical_list: D001426:Bacterial Proteins; D029968:Escherichia coli Proteins; D006360:Heat-Shock Proteins; D026901:Membrane Transport Proteins; D011506:Proteins; D000069816:SEC Translocation Channels; C057841:SecY protein, E coli; D004247:DNA; D000251:Adenosine Triphosphatases; D000081416:SecA Proteins