Download MendeleyAmino acid sequence of a globin from the sea cucumber Caudina (Molpadia) arenicola.
Mauri, F., Omnaas, J., Davidson, L., Whitfill, C., Kitto, G.B.(1991) Biochim Biophys Acta 1078: 63-67
- PubMed: 2049384
- DOI: https://doi.org/10.1016/0167-4838(91)90093-f
- Primary Citation of Related Structures:
1HLM - PubMed Abstract:
Coelomic cells from the sea cucumber Caudina (Molpadia) arenicola contain four major globins, A, B, C and D. The hemoglobins from this organism show unusual ligand-linked dissociation properties. The complete amino acid sequence of the D globin has been established. It is N-acetylated, consists of 158 residues and has a 10 amino acid N-terminal extension similar to that found in some other invertebrate globins. The C. arenicola D globin has an equal sequence identity (28%) with both alpha and beta human globins and as anticipated, is more closely related to these vertebrate proteins than are molluscan globins. The C. arenicola D globin shows a 59% identity with the globin I from the sea cucumber Paracaudina chilensis. The availability of the C. arenicola D globin sequence will aid the X-ray analysis of this protein and facilitate an understanding of the changes in subunit interactions that occur with cooperative ligand binding.
Organizational Affiliation:
Clayton Foundation Biochemical Institute, Department of Chemistry and Biochemistry, University of Texas, Austin.
