Fig. 3. Nucleotide (top) and deduced amino acid (bottom) sequences of the Porcellio scaber smooth endoplasmic reticulum Ca²⁺-ATPase (SERCA) cDNA. Nucleotides and amino acids are numbered at the sides of the sequence. Start and stop (asterisk) codons are labelled in red. The KILLL-motif (yellow), phosphorylation site and site for probe hybridisation (green), and residues forming calcium-binding site I (grey) and binding site II (blue), and residue D₈₀₀ (green) bridging sites I and II are labelled. Putative transmembrane regions (M1–M10) are underlined.