Nom du corpus

Corpus Systématique Animale

Titre du document

Determinants of sperm nuclear shaping in the genus Xenopus

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Batraciens_v2b_00445
Auteur(s)
  • Michael S. Risley 1
  • Ronald A. Eckhardt 2
  • Mairi Mann 3
  • Harold E. Kasinsky 3
Affiliation(s)
  • 1) Department of Anatomy, Cornell University Medical College, 1300 York Avenue New York, 10021, New York, USA
  • 2) Department of Biology, Brooklyn College of The City University of New York, 11210, Brooklyn, New York, USA
  • 3) Department of Zoology, The University of British Columbia, V6T 2A9, Vancouver, British Columbia, Canada
Résumé

The morphogenesis of sperm nuclei was investigated in six different species or subspecies of the genus Xenopus (Pipidae, Anura). The sequence of nuclear morphogenesis was similar in each species used in this study. Electrophoretic comparison of the basic chromatin proteins from late spermatids and sperm of each species demonstrated that the complements of histones and spermatid-sperm-specific basic proteins were extremely diverse suggesting that shape was not determined by specific basic proteins or mechanisms of histone removal. This conclusion was reinforced by the observation that Xenopus sperm DNA decondensed by 2.0 M NaCl remained contrained in residual structures which resembled intact sperm nuclei. These observations suggested that morphogenesis of sperm nuclei is directed by proteins or RNA molecules which are not directly responsible for chromatin condensation.

Catégories Science-Metrix
  • 1 - health sciences
  • 2 - biomedical research
  • 3 - developmental biology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - psychologie. psychophysiologie
Catégories Scopus
  • 1 - Health Sciences ; 2 - Medicine ; 3 - Genetics(clinical)
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Genetics
Catégories WoS
  • 1 - science ; 2 - genetics & heredity
  • 1 - science ; 2 - biochemistry & molecular biology
Identifiant ISTEX
77A15FC7CB46A29E852CC59E2805239B021407F0
Revue

Chromosoma

Année de publication
1982
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
8.372
Sous-corpus
  • Batraciens
Type de publication
Journal
ark:/67375/1BB-5VV3435B-S
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