SMK6 - Plant Editosome Database - CNCB-NGDC

Summary

Editing Factor: SMK6
Synonym: SMALL KERNEL 6; SLO2; SLOW GROWTH 2
Description: Loss of Smk6 function affects the C-to-U editing at nad1-740, nad4L-110, nad7-739, and mttB-138,139 sites, impairs mitochondrial activity and blocks embryogenesis and endosperm development; Genetic and molecular analysis indicated that SMK6 is the maize ortholog of the Arabidopsis SLO2, which is a component of the PPR-E+/NVWA/DYW2 editing complex; However, yeast two-hybrid analyses did not detect any interaction between SMK6 and any of the mitochondrion-targeted RIPs/MORFs, suggesting that RIPs/MORFs may not be a component of PPR-E+/NVWA/DYW2 RNA editing complex
Protein Family: Pentatricopeptide repeat (PPR) protein
Subclass: E+
Physical Interaction: NA
Construct Structure: PLS-E-E+
Gene ID & Species: AT2G13600 (Arabidopsis thaliana)
GRMZM2G010046 (Zea mays)
Edited Gene(s): nad1    nad4L    nad7    mttB
Editing Type(s): C-to-U (30)
Publication(s): [1] SMK6 mediates the C-to-U editing at multiple sites in maize mitochondria, Journal of?Plant?Physiology, 2019. [doi:10.1016/j.jplph.2019.152992]

Editing Details

Species Gene ID Organelle Edited Gene Position Region Nuclear Genome Organelle Genome Other Region Other Position Editing Type Codon Amino Acid Molecular Effect Experiment Details
Arabidopsis thaliana AT2G13600 Mitochondrion mttB 145 CDS NA NA NA NA C-to-U CUC=>UUC P=>F Recoding
Experiment Details
Genotype (Ecotype) Allele Treatment Treatment Detail Mutant Type Phenotype Tissue Development Stage Detection Method Editing Frequency Editing Extent Mutant Effect PMID
Col-0Col-0ControlControlNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNALowNA31234031
SALK_021900Cslo2ControlControlNo mutantSlow growthKernel11 DAPDirect Sequencing of PCR ProductsNAUneditedNA31234031
SALK_021900CSmk6-OX-4OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAUneditedNA31234031
SALK_021900CSmk6-OX-5OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAUneditedNA31234031
SALK_021900CSmk6-OX-8OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNALowNA31234031
Arabidopsis thaliana AT2G13600 Mitochondrion mttB 146 CDS NA NA NA NA C-to-U UCG=>CCG S=>P Recoding
Experiment Details
Genotype (Ecotype) Allele Treatment Treatment Detail Mutant Type Phenotype Tissue Development Stage Detection Method Editing Frequency Editing Extent Mutant Effect PMID
Col-0Col-0ControlControlNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAMediumNA31234031
SALK_021900Cslo2ControlControlNo mutantSlow growthKernel11 DAPDirect Sequencing of PCR ProductsNAUneditedNA31234031
SALK_021900CSmk6-OX-4OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAMediumNA31234031
SALK_021900CSmk6-OX-5OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAHighNA31234031
SALK_021900CSmk6-OX-8OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNALowNA31234031
Arabidopsis thaliana AT2G13600 Mitochondrion nad4L 110 CDS NA NA NA NA C-to-U CAA=>UAA Q=>Stop codon Nonsense
Experiment Details
Genotype (Ecotype) Allele Treatment Treatment Detail Mutant Type Phenotype Tissue Development Stage Detection Method Editing Frequency Editing Extent Mutant Effect PMID
Col-0Col-0ControlControlNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAHighNA31234031
SALK_021900Cslo2ControlControlNo mutantSlow growthKernel11 DAPDirect Sequencing of PCR ProductsNAUneditedNA31234031
SALK_021900CSmk6-OX-4OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAHighNA31234031
SALK_021900CSmk6-OX-5OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAMediumNA31234031
SALK_021900CSmk6-OX-8OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAMediumNA31234031
Arabidopsis thaliana AT2G13600 Mitochondrion nad7 739 CDS NA NA NA NA C-to-U CUU=>UUU L=>F Recoding
Experiment Details
Genotype (Ecotype) Allele Treatment Treatment Detail Mutant Type Phenotype Tissue Development Stage Detection Method Editing Frequency Editing Extent Mutant Effect PMID
Col-0Col-0ControlControlNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAHighNA31234031
SALK_021900Cslo2ControlControlNo mutantSlow growthKernel11 DAPDirect Sequencing of PCR ProductsNAUneditedNA31234031
SALK_021900CSmk6-OX-4OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAHighNA31234031
SALK_021900CSmk6-OX-5OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNAMediumNA31234031
SALK_021900CSmk6-OX-8OverexpressionOverexpressionNo mutantGrow wellKernel11 DAPDirect Sequencing of PCR ProductsNALowNA31234031
Zea mays GRMZM2G010046 Mitochondrion mttB 138 CDS NA NA NA NA C-to-U CUC=>UUC P=>F Recoding
Experiment Details
Genotype (Ecotype) Allele Treatment Treatment Detail Mutant Type Phenotype Tissue Development Stage Detection Method Editing Frequency Editing Extent Mutant Effect PMID
NAWTControlControlNo mutantNAKernel11 DAPDirect Sequencing of PCR ProductsNALowNone31234031
UniformMusmk6Mu transposon insertionMu transposon insertionHeterozygous; RecessiveThe development of both embryo and endosperm is delayed in the smk6 kernelsKernel11 DAPDirect Sequencing of PCR ProductsNALowNA31234031
Zea mays GRMZM2G010046 Mitochondrion mttB 139 CDS NA NA NA NA C-to-U UCG=>CCG S=>P Recoding
Experiment Details
Genotype (Ecotype) Allele Treatment Treatment Detail Mutant Type Phenotype Tissue Development Stage Detection Method Editing Frequency Editing Extent Mutant Effect PMID
NAWTControlControlNo mutantNAKernel11 DAPDirect Sequencing of PCR ProductsNAMediumNone31234031
UniformMusmk6Mu transposon insertionMu transposon insertionHeterozygous; RecessiveThe development of both embryo and endosperm is delayed in the smk6 kernelsKernel11 DAPDirect Sequencing of PCR ProductsNALowNA31234031
Zea mays GRMZM2G010046 Mitochondrion nad1 740 CDS NA NA NA NA C-to-U CCA=>CUA P=>L Recoding
Experiment Details
Genotype (Ecotype) Allele Treatment Treatment Detail Mutant Type Phenotype Tissue Development Stage Detection Method Editing Frequency Editing Extent Mutant Effect PMID
NAWTControlControlNo mutantNAKernel11 DAPDirect Sequencing of PCR ProductsNAMediumNone31234031
UniformMusmk6Mu transposon insertionMu transposon insertionHeterozygous; RecessiveThe development of both embryo and endosperm is delayed in the smk6 kernelsKernel11 DAPDirect Sequencing of PCR ProductsNALowNA31234031
Zea mays GRMZM2G010046 Mitochondrion nad4L 110 CDS NA NA NA NA C-to-U CAA=>UAA Q=>Stop codon Nonsense
Experiment Details
Genotype (Ecotype) Allele Treatment Treatment Detail Mutant Type Phenotype Tissue Development Stage Detection Method Editing Frequency Editing Extent Mutant Effect PMID
NAWTControlControlNo mutantNAKernel11 DAPDirect Sequencing of PCR ProductsNALowNone31234031
UniformMusmk6Mu transposon insertionMu transposon insertionHeterozygous; RecessiveThe development of both embryo and endosperm is delayed in the smk6 kernelsKernel11 DAPDirect Sequencing of PCR ProductsNALowNA31234031
Zea mays GRMZM2G010046 Mitochondrion nad7 739 CDS NA NA NA NA C-to-U CUU=>UUU L=>F Recoding
Experiment Details
Genotype (Ecotype) Allele Treatment Treatment Detail Mutant Type Phenotype Tissue Development Stage Detection Method Editing Frequency Editing Extent Mutant Effect PMID
NAWTControlControlNo mutantNAKernel11 DAPDirect Sequencing of PCR ProductsNAHighNone31234031
UniformMusmk6Mu transposon insertionMu transposon insertionHeterozygous; RecessiveThe development of both embryo and endosperm is delayed in the smk6 kernelsKernel11 DAPDirect Sequencing of PCR ProductsNALowNA31234031
Last update: Sep 2026 (version 2.0)