Table 2 Closest homologues to the nine PPR proteins with identified RNA targets

AaPPR1

ycf1

AT4G35130

PLS (DYW)

0

51

–

–

AaPPR2

rpoC1, rps12

AT2G29760 (OTP81/QED1)

PLS (DYW)

0

55

･Editing of accD, matK, ndnB, rpoB and rps12.

[56]

AaPPR5

trnK-UUU

AT4G18520 (SEL1/PDM1)

PLS (PLS)

0

54

･Processing of rpoA.

･Editing of accD.

･Splicing of ndhA and trnK.

[57,58,59]

AaPPR6

rps16, petN, atpE

AT4G16390 (SVR7)

P (SMR)

0

63

･Transcription of ATP synthase subunits (atpB/E, atpH and atpF) and psaJ.

･Accumulation of ATP synthase subunits (atpA, atpB, atpE and atpF).

･Translation rbcL and atpB/E.

[60]

AaPPR10

rpoC1, psbC, petA, rrn23

GRMZM2G025409 (ZmPPR5)

P

0

70

･Stabilizing unspliced precursor of trnG-UCC by inhibiting an endonucleolytic cleveage event.

･Possible association with rpl16.

･Indirect association with reduction in rRNA processing.

[61]

AaPPR11

ycf2

AT4G30825 (BFA2)

P

0

60

･Barrier to prevent the atpH/F transcript degradation by exoribonucleases by binding to the consensus of the atpF/A intergenic region

[62]

AaPPR13

atpA, rps14, trnI-GAU, ycf1

AT5G13770

P

0

50

–

–

AaPPR15

rbcL, rpl33

AT2G02980 (OTP85)

PLS (DYW)

0

57

･Editing of ndhD

[63]

AaPPR18

ycf2, psbD, psbC, psaB, ndhG

AT4G02750

PLS (DYW)

1.00E-117

45

–

–