Fig. 8. Comparison of the predicted Arabidopsis TGD1 permease protein and its orthologs in different bacteria. Proteins (GenBank accession Nos) are, from top to bottom: Rickettsia conorii (NP_359766), Caulobacter crescentus (NP_422489), Arabidopsis thaliana (NP_173410) and Agrobacterium tumefaciens (NP_532332). Black boxes indicate identical, gray boxes conserved amino acids. Predicted transmembrane helix domains (THMs) are indicated above the sequence with a bar. Amino acid substitutions in the Arabidopsis tgd1 mutant alleles are shown below the sequence.