Amino-acid sequence of scylliorhinine Z1 and comparison of the primary structure of the protamines of the dogfish Scylliorhinus caniculus
Identifieur interne : 000754 ( Istex/Corpus ); précédent : 000753; suivant : 000755Amino-acid sequence of scylliorhinine Z1 and comparison of the primary structure of the protamines of the dogfish Scylliorhinus caniculus
Auteurs : Philippe Chevaillier ; Arlette Martinage ; Michel Gusse ; Pierre SautièreSource :
- Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology [ 0167-4838 ] ; 1987.
Abstract
Scylliorhinine Z1 is one of the four protamines of mature sperm nuclei of the dogfish. This protein has a high content of arginine and cysteine and the polypeptide chain contains 50 residues. These molecular characteristics are also found in mammalian protamines, but differ from those of teleost protamines. The amino-acid sequence reveals that the N-terminal half is enriched in hydrophobic amino acids, whereas the C-terminal domain is more basic and contains a cluster of four hydroxylated amino acids. A sequence of eight amino acids is duplicated. The protein remains monophosphorylated in mature sperm nuclei. The amino-acid sequence reveals no clear homology with teleost protamines. Moreover, the four scylliorhinines could play specific functions in DNA packaging, as they do not appear to be structurally related. Therefore, they cannot be considered as being derived from a unique ancestral gene, as has been suggested for teleost protamines.
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DOI: 10.1016/0167-4838(87)90156-7
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<front><div type="abstract" xml:lang="en">Scylliorhinine Z1 is one of the four protamines of mature sperm nuclei of the dogfish. This protein has a high content of arginine and cysteine and the polypeptide chain contains 50 residues. These molecular characteristics are also found in mammalian protamines, but differ from those of teleost protamines. The amino-acid sequence reveals that the N-terminal half is enriched in hydrophobic amino acids, whereas the C-terminal domain is more basic and contains a cluster of four hydroxylated amino acids. A sequence of eight amino acids is duplicated. The protein remains monophosphorylated in mature sperm nuclei. The amino-acid sequence reveals no clear homology with teleost protamines. Moreover, the four scylliorhinines could play specific functions in DNA packaging, as they do not appear to be structurally related. Therefore, they cannot be considered as being derived from a unique ancestral gene, as has been suggested for teleost protamines.</div>
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<head><ce:title>Amino-acid sequence of scylliorhinine Z1 and comparison of the primary structure of the protamines of the dogfish <ce:italic>Scylliorhinus caniculus</ce:italic>
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<abstract lang="en">Scylliorhinine Z1 is one of the four protamines of mature sperm nuclei of the dogfish. This protein has a high content of arginine and cysteine and the polypeptide chain contains 50 residues. These molecular characteristics are also found in mammalian protamines, but differ from those of teleost protamines. The amino-acid sequence reveals that the N-terminal half is enriched in hydrophobic amino acids, whereas the C-terminal domain is more basic and contains a cluster of four hydroxylated amino acids. A sequence of eight amino acids is duplicated. The protein remains monophosphorylated in mature sperm nuclei. The amino-acid sequence reveals no clear homology with teleost protamines. Moreover, the four scylliorhinines could play specific functions in DNA packaging, as they do not appear to be structurally related. Therefore, they cannot be considered as being derived from a unique ancestral gene, as has been suggested for teleost protamines.</abstract>
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<identifier type="PII">S0167-4838(00)X0148-3</identifier>
<part><date>19870724</date>
<detail type="volume"><number>914</number>
<caption>vol.</caption>
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<detail type="issue"><number>1</number>
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<extent unit="issue pages"><start>1</start>
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<extent unit="pages"><start>19</start>
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<identifier type="DOI">10.1016/0167-4838(87)90156-7</identifier>
<identifier type="PII">0167-4838(87)90156-7</identifier>
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