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A sec Y homologue is found in the plastid genome of Cryptomonas Φ
Author(s) -
Douglas Susan E.
Publication year - 1992
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(92)80029-g
Subject(s) - plastid , operon , genome , open reading frame , biology , gene , chloroplast , escherichia coli , ribosomal protein , genetics , reading frame , microbiology and biotechnology , peptide sequence , ribosome , rna
An open reading frame with significant similarity to the sec Y gene of Escherichia coli has been found within a ribosomal protein operon on the plastid genome of the chlorophyll c ‐containing alga Cryptomonas Φ. The gene encodes a protein or 420 amino acids (molecular weight 46.906 daltons) and contains ten potential membrane‐spanning domains, as in the E. coli homologue. This report of a sec Y homologue in a plastid genome provides preliminary evidence that a prokaryotic‐like protein export system may be operating in plastids.