Table 2.
Arabidopsis thaliana members of the plastidial assembly machinery.
| Protein names | AGI numbers | Phenotype(s) of mutant plants | Reference(s) |
|---|---|---|---|
| NFS2/CpNifS | At1g08490 | A RNAi mutant is seedling lethal | Van Hoewyk et al., 2007 |
| SUFE1 | At4g26500 | Embryo lethal | Xu and Moller, 2006 |
| SUFE2 | At1g67810 | None yet described | |
| SUFE3 | At5g50210 | Embryo lethal | Murthy et al., 2007 |
| SUFB/ NAP1 | At4g04770 | Strong alleles are embryo-lethal, weak alleles present a perturbation in the phytochrome signal transduction pathway and an impaired chlorophyll degradation | Moller et al., 2001; Nagane et al., 2010 |
| SUFC/ NAP7 | At3g10670 | Embryo lethal | Xu and Moller, 2004 |
| SUFD/ NAP6 | At1g32500 | Bleached plants with reduced root growth, defects in plastid morphology and in seed germination | Hjorth et al., 2005 |
| SUFA1/CpISCA | At1g10500 | No phenotype | Yabe and Nakai, 2006 |
| NFU1 | At4g01940 | None yet described | |
| NFU2 | At5g49940 | Pale green, dwarf phenotype, inhibition of root growth. Impaired PSI and decreased levels of FDX | Touraine et al., 2004; Yabe et al., 2004 |
| NFU3 | At4g25910 | None yet described | |
| HCF101 | At3g24430 | Strong alleles are seedling-lethal In weak alleles, reduced levels of [4Fe-4S] enzymes (PSI, FTR) | Lezhneva et al., 2004 |
| IBA57.2 | At1g60990 | None yet described | |
| GRXS14 | At3g54900 | Increased carbonylation of plastidial proteins | Cheng et al., 2006 |
| GRXS16 | At2g38270 | None yet described |
The plastidial localization of all these proteins has been experimentally confirmed. A. thaliana SUFE1 is dual targeted to plastids and mitochondria. There is another putative SUFB gene (At4g04770) but, from EST or transcriptomic data, there is no evidence that it is expressed.