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Cloning and sequence analysis of cDNA for the Ca(2+)-activated photoprotein, clytin
1Marine Biology Research Division 0202, Scripps Institution of Oceanography, University of California, San Diego, La Jolla 92093.
FEBS Letters
|January 11, 1993
Abstract:
Clytin is a member of the aequorin family of photoproteins. It is made up of 189 amino acid residues, contains 3 Ca(2+)-binding sites, and shows 62% homology in amino acid residues to those in aequorin. The cysteine, tryptophan, and histidine residues, and the C-terminal proline, that are conserved in aequorin and clytin may be involved in the Ca(2+)-activated bioluminescence of the two proteins. Clytin may also prove useful in the determination of Ca2+.