Table 1

Genes acquired from non-organellar sources prior to the split of red algae and green plants

Gene name

Putative donor

Localization

Putative functions


GCN5-related N-acetyltransferase*

β,γ-Proteobacteria

Cytosol

Arginine biosynthesis

Glycyl-tRNA synthetase

Bacteria

Plastid/mitochondria

Translation

Dihydrodipicolinate synthase (dapA)

γ-Proteobacteria

Plastid

Lysine biosynthesis

ThiC family protein

Bacteria

Plastid

Thiamine biosynthesis

2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase

Chlamydiae

Plastid

Isoprenoid biosynthesis

Polynucleotide phosphorylase

Chlamydiae

Plastid

RNA degradation

ATP/ADP translocase

Chlamydiae

Plastid

ATP/ADP transport

MGDG synthase

Bacteria

Plastid

Lipid biosynthesis

Glycerol-3-phosphate acyltransferase

Chlamydiae

Plastid

Phospholipid biosynthesis

Alpha amylase

Chlamydiae

Plastid

Carbohydrate metabolism

Sodium:hydrogen antiporter

Chlamydiae

Plastid

Ion transport

3-Dehydroquinate synthase

β,γ-Proteobacteria

Plastid

Amino acid biosynthesis

2-Methylthioadenine synthetase

Bacteroidetes

Plastid

tRNA modification

Uroporphyrinogen-III synthase

Bacteria

Plastid

Porphyrin biosynthesis

ACT domain-containing protein

γ-Proteobacteria

Plastid

Amino acid binding

4-Hydroxy-3-methylbut-2-en-1-yl diphosphate synthase

Chlamydiae

Plastid

Isoprenoid biosynthesis

Queuine tRNA-ribosyltransferase

Chlamydiae

Plastid

tRNA modification

SAM-dependent methyltransferase

Bacteria

Cytosol

RNA binding

Beta-ketoacyl-ACP synthase (fabF)

Chlamydiae

Plastid

Fatty acid biosynthesis

Semialdehyde dehydrogenase

α-Proteobacteria

Cytosol

Amino acid metabolism

Diaminopimelate decarboxylase (lysA)

Bacteria

Plastid

Lysine biosynthesis

Dihydrodipicolinate reductase (dapB)

Bacteria

Plastid

Lysine biosynthesis

Aspartate aminotransferase

Chlamydiae

Plastid

Lysine biosynthesis

Leucyl-tRNA synthetase

Bacteria

Plastid/mitochondria

Translation

Tyrosyl-tRNA synthetase

Chlamydiae

Plastid/mitochondria

Translation

Ribosomal protein L11 methyltransferase

β,γ-Proteobacteria

Cytosol

Amino acid methylation

2-Methylthioadenine synthetase*

Bacteria

Cytosol

tRNA modification

GTP binding protein, typA

Chloroflexi

Plastid

Translation elongation

Cu-ATPase

Chlamydiae

Plastid

Ion transport

4-Diphosphocytidyl-2-C-methyl-D-erythritol kinase

Chlamydiae

Plastid

Isoprenoid biosynthesis

Enoyl-ACP reductase (fabI)

Chlamydiae

Plastid

Fatty acid biosynthesis

Histidinol-phosphate transaminase

Chloroflexi

Plastid

Histidine biosynthesis

Florfenicol resistance protein*

δ-Proteobacteria

Cytosol

Fe-S-cluster binding

23S rRNA (Uracil-5-)-methyltransferase

Chlamydiae

Plastid

RNA modification

Topoisomerase 6 subunit B

Crenarchaea

Cytosol

Protein binding

tRNA methyltransferase

Bacteria

Plastid/cytosol

RNA processing

Isoleucyl-tRNA synthetase

Bacteria

Cytosol

Translation


*Genes for which plastid-derived homologs already exist in plants. Genes that likely possessed novel functions and whose homologs are rarely found in cyanobacteria. For all other genes, the possibility of them resulting from displacement of an endogenous homolog cannot be excluded. The putative donors of these genes are determined without invoking secondary HGT events. Alternative explanations for each gene are discussed in the text and Additional data file 1.

Huang and Gogarten Genome Biology 2008 9:R109   doi:10.1186/gb-2008-9-7-r109

Open Data