Characterization of a protamine gene from the chum salmon (Oncorhynchus keta)

We have cloned and sequenced a protamine gene from the chum salmon (Oncorhynchus keta). This gene sequence is highly homologous to one found in the rainbow trout (Salmo gairdneri), including the conservation of two structurally different repetitive elements. One of these repeats resembles a nonviral...

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Bibliographic Details
Published in:Journal of molecular evolution 1988-01, Vol.27 (1), p.8-16
Main Authors: MOIR, R. D, DIXON, G. R
Format: Article
Language:English
Subjects:
Amino Acid Sequence
Animals
Base Sequence
Biological and medical sciences
Cloning, Molecular
DNA - genetics
DNA - isolation & purification
DNA Restriction Enzymes
Freshwater
Fundamental and applied biological sciences. Psychology
Genes
Genes. Genome
Marine
Molecular and cellular biology
Molecular genetics
Molecular Sequence Data
Nucleic Acid Hybridization
Oncorhynchus keta
Protamines - genetics
Salmon - genetics
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Summary:We have cloned and sequenced a protamine gene from the chum salmon (Oncorhynchus keta). This gene sequence is highly homologous to one found in the rainbow trout (Salmo gairdneri), including the conservation of two structurally different repetitive elements. One of these repeats resembles a nonviral retroposon and the second is similar to a retroviral-like transposable element. The degree of sequence divergence between the O. keta and S. gairdneri genes is much less within the transcription unit than in the repetitive elements or the remainder of the flanking DNA, suggesting that since the coding and the untranslated regions are highly conserved, both contribute significantly to the structure and stability of protamine mRNA (or its cognate messenger ribonucleoprotein) and this may be important for the translational control of protamine synthesis.
ISSN:0022-2844
1432-1432
DOI:10.1007/bf02099725