Nom du corpus

Corpus Systématique Animale

Titre du document

Histone genes are located at the sphere loci of Xenopus lampbrush chromosomes

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_00245
Auteur(s)
  • Harold G. Callan 1,2
  • Joseph G. Gall 1
  • Christine Murphy 1
Affiliation(s)
  • 1) Department of Embryology, Carnegie Institution, 21210, Baltimore, MD, USA
  • 2) Gatty Marine Laboratory, University of St. Andrews, KY16 8LB, St. Andrews, Fife, UK
Résumé

In the anuran Xenopus, as has been demonstrated previously in several species of urodele Amphibia, histone genes lie at the sphere organizer loci of the lampbrush chromosomes. They were located by in situ hybridization of a 3H-labelled histone H4 anti-sense cRNA probe applied to lampbrush preparations in which transcript RNA had been retained, and likewise to preparations in which transcripts were absent but whose DNA had been denatured prior to hybridization. In Xenopus the histone genes lie in intimate association with the spheres that are attached to the lampbrush chromosomes, but they are absent from spheres that lie free in the germinal vesicle. The Anura separated from the Urodela several hundred million years ago, so the sphere organizer/histone gene association is of great antiquity. This suggests that the association has a functional significance, though it is one that has yet to be discovered.

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
99A1DF8459A81021BC14546EC05F70891C1168B7
Revue

Chromosoma

Année de publication
1991
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
7.212
Sous-corpus
  • Batraciens
Type de publication
Journal
ark:/67375/1BB-DKK3MF17-5
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