Figure 4.

Structure of CPT1 and Amino Acid Sequence of CPT1.

(A) Structure of the genomic CPT1 gene. Exons (boxes) and introns (lines) were determined by a comparison of the genomic and cDNA sequences. The positions of the start and stop codons are indicated.

(B) The deduced amino acid sequence of CPT1, shown in comparison with the sequence of NPH3. Asterisks denote residues identical in the two sequences. Gray and black shadings indicate BTB/POZ and coiled-coil domains, respectively. The four regions, I to IV, conserved in the NPH3 family of Arabidopsis and the corresponding regions of CPT1 are boxed. The Tyr phosphorylation site conserved in the NPH3 family of Arabidopsis and the corresponding site of CPT1 are indicated in bold letters.