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DYW‐type PPR proteins in a heterolobosean protist: Plant RNA editing factors involved in an ancient horizontal gene transfer?
Author(s) -
Knoop Volker,
Rüdinger Mareike
Publication year - 2010
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/j.febslet.2010.09.041
Subject(s) - pentatricopeptide repeat , horizontal gene transfer , biology , protist , gene , genetics , rna editing , rna , phylogenetics
A particular type of pentatricopeptide repeat (PPR) proteins with variable length of the 35 aa PPR motifs and conserved carboxyterminal extensions, named the PLS proteins, was so far exclusively identified in land plants. Several PLS proteins with such domain extensions (E, E+, DYW) were shown to be involved in plant organellar RNA editing but their evolutionary origin had remained enigmatic. We here report the first case of DYW‐type PLS proteins outside of the plant kingdom in the protist Naegleria gruberi and hypothesize on horizontal gene transfer in very early land plant evolution.