LIS - Legume Information System
Information about legume traits for crop improvement
GlycineMine
v5.1.0.3
Glycine data from LIS
v5.1.0.3
Glycine data from LIS
| Type | Repeat |
| Description | This entry represents the PPR repeat.Pentatricopeptide repeat (PPR) proteins are characterised by tandem repeats of a degenerate 35 amino acid motif [ ]. PPR proteins are sequence-specific RNA-binding proteins that are involved in multiple aspects of RNA metabolism [, ]. They can bind a diversity of sequences that confers the variability in its functions []. Most have roles in mitochondria or plastids []. PPR repeats were discovered while screening Arabidopsis proteins for those predicted to be targeted to mitochondria or chloroplast [, ]. Some of these proteins have been shown to play a role in post-transcriptional processes within organelles [, ]. Plant genomes have between one hundred to five hundred PPR genes per genome whereas non-plant genomes encode two to six PPR proteins.The plant PPR protein family has been divided in two subfamilies on the basis of their motif content and organisation [ , ].The crystal structure of maize chloroplast PPR10 has been reported. The nineteen repeats of PPR10 are assembled into a right-handed superhelical spiral. PPR10 forms a homodimer and exhibits considerable conformational changes upon binding to its ssRNA target, with six nucleotides being specifically recognized by six corresponding PPR10 repeats [ ]. |
| Short Name | Pentatricopeptide_repeat |
