edugeneedugene2013
All
  • Institution/s: Universidad de Saarbrücken, Universidad de Valladolid, Universitatea de Vest din Timişoara
  • Project: Diccionario Terminológico de Genética (Eurogene)
  • Identification number: 54
  • Subdomains: Studies of chromatin, Studies of DNA, Studies of RNA, Techniques
  • Author/s: Judith CARRERA FERNÁNDEZ, Laura SANJUÁN LANCHO, Raluca RADAC, Rosario HERRERO
  • Creation / modification date: 01-03-2014
  • Term: heterochromatin
  • Gramatical category: s
  • Definition: Chromatin of specific parts of certain chromosomes which remains condensed throughout interphase whilst retaining the deeply staining properties of metaphase chromosomes, but also a pattern of DNA replication out of phase with that of remaining euchromatic parts of the chromosomes, and a relative transcriptional inactivity.
  • Context: We propose that perpetuation of heterochromatin involves self-maintenance factors, including local concentration of Hp1α and -β, and that a degree of plasticity is provided by the cycle of H4 acetylation/deacetylation assisted by CAF-1.
  • Expression: (1) Heterochromatin protein HP1 (2) Constitutive heterochromatin (3) Facultative heterochromatin
  • Weighting mark: nor
  • Remission: sin, ley de Hardy-Weinberg/equilibrio de Hardy-Weinberg Fuente: BENITO, J. C. y N. F. J. ESPINO (2012). “Glosario”, en Genética: Conceptos esenciales. Madrid [etc: Médica Panamericana. OLIVA, R. (2002). Genética médica. Barcelona: Edicions Universitat de Barcelona.
  • Sources:
    • Term: http://atlasgeneticsoncology.org/Educ/HeterochromID30058FS4.pdf
    • Definition: http://atlasgeneticsoncology.org/Educ/HeterochromID30058FS.html
    • Context: http://www.facbio.com/content/index.php?option=com_content&task=view&id=51&Itemid=75 http://www.news-medical.net/health/Chromosomes-in-Eukaryotes-(French).aspx http://www.ephe.sorbonne.fr/images/stories/scd_ephe/monographies_svt/biol_cell_mol/ephe_dip_mansuroglu.pdf
    • Expression: http://atlasgeneticsoncology.org/Educ/HeterochromID30058FS4.pdf http://tagc.univ-mrs.fr/puthier/images/download/3_chromatine.pdf
  • Images:
    • heterochromatin
      http://commons.wikimedia.org/wiki/File:Nucleus_of_a_chloride_cell.jpg
See this term in