Amino acid sequence of the coelomic C globin from the sea cucumber Caudina (Molpadia) arenicola. |
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| Authors: | Gene D McDonald Lois Davidson and G Barrie Kitto |
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| Institution: | (1) Clayton Foundation Biochemical Institute and Department of Chemistry and Biochemistry, The University of Texas at Austin, 78712 Austin, Texas |
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| Abstract: | The sequence of a globin from a marine invertebrate, the sea cucumberCaudina (Molpadia) arenicola (Echinodermata), is reported. This globin, chain C, is one of four major globins found in coelomic red cells in this organism and is the second to be sequenced. Chain C consists of 157 residues, is amino-terminally acetylated, and has an extended amino-terminal region. This globin shares a 60% sequence identity with the other sequencedC. arenicola globin, D chain (Mauriet al., Biochem. Biophys. Acta
1078, 63–67, 1991), but has a 93.6% identity with a globin from another sea cucumber,Paracaudina chilensis (Suzuki,Biochem. Biophys. Acta,
998, 292–296, 1989). |
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| Keywords: | Hemoglobin amino acid sequence sea cucumber |
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