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Characterization of centrin genes in Paramecium.
- Source :
-
European journal of biochemistry [Eur J Biochem] 1996 May 15; Vol. 238 (1), pp. 121-8. - Publication Year :
- 1996
-
Abstract
- Centrins are highly conserved, ubiquitous cytoskeletal components which belong to the EF-hand superfamily of Ca2+-modulated proteins. We report here the molecular characterization of new members of the centrin family, Paramecium centrins. Previous studies described the organization of the infraciliary lattice (ICL), the innermost cortical cytoskeletal network of Paramecium, and showed that it was composed of a set of low-molecular-mass, Ca2+-binding polypeptides [Garreau de Loubresse, N., Klotz, C., Vigues, B., Rutin, J & Beisson, J. (1991) Biol. Cell 71, 217-225]. In this paper we show that these polypeptides are recognized by specific anti-centrin polyclonal antibodies. Their microsequences revealed four distinct N-termini. For one of them, ICL1, N-terminal and internal peptide sequences were used for PCR amplification and cloning of a DNA fragment containing a complete centrin coding sequence. The deduced amino acid sequence presents about 50% identify with those of centrins from other species. Further molecular analysis allowed us to identify two additional closely related, co-expressed ICL1 genes, providing the first example of a centrin multigenic family in a microorganism.
- Subjects :
- Amino Acid Sequence
Animals
Antibodies, Protozoan
Base Sequence
Calcium-Binding Proteins immunology
Ciliophora chemistry
Ciliophora immunology
Cloning, Molecular
Conserved Sequence
Contractile Proteins immunology
Gene Expression
Molecular Sequence Data
Paramecium ultrastructure
Sequence Analysis, DNA
Sequence Homology, Amino Acid
Calcium-Binding Proteins genetics
Chromosomal Proteins, Non-Histone
Contractile Proteins genetics
Fungal Proteins chemistry
Fungal Proteins genetics
Isocitrate Lyase chemistry
Isocitrate Lyase genetics
Paramecium genetics
Protozoan Proteins chemistry
Protozoan Proteins genetics
Subjects
Details
- Language :
- English
- ISSN :
- 0014-2956
- Volume :
- 238
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- European journal of biochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 8665928
- Full Text :
- https://doi.org/10.1111/j.1432-1033.1996.0121q.x