Fig. 1. (A) The complete nucleotide and deduced amino acid sequence of crayfish cardiac muscle SERCA cDNA (accession number AF025848). Nucleotides and amino acids are numbered to the right of the sequence. The phosphorylation site, fluorescein isothiocyanate (FITC) site and the 5'-p-fluorosulfonylbenzoyladenosine (FSBA)/-[4-(N-2-chloroethyl-N-methylamino)]benzylamide ATP (CIRATP) binding site are underlined and labeled. The start codon and the stop codon are indicated in bold letters. The slash in the sequence at nucleotide 2980 is the site at which the heart muscle sequence diverges from the axial abdominal muscle sequence (Zhang et al., 2000; accession no. AF025849). (B) The nucleotide sequence of crayfish axial abdominal muscle SERCA (Zhang et al., 2000) beginning from nucleotide 2980.

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