HP1 alpha est un gène codé par le symbole CBX5. Communément appelé aussi: Chromobox protein homolog 5; Antigen p25; Heterochromatin protein 1 homolog alpha; CBX5; HP1A. HP1 alpha a une masse de 22.23kDa et une longueur d'acide aminé de 191.
Nous proposons 19 des anticorps contre HP1 alpha, élevé dans Lapin, Souris et Chèvre, qui sont appropriés pour le WB, IHC, ELISA, ICC/IF, Cytométrie en Flux, IP et ChIP avec des échantillons dérivés de Humain, Souris, Rat et Canin.
Informations sur les Gènes et les Protéines
Résumé UniProt
Component of heterochromatin that recognizes and binds histone H3 tails methylated at 'Lys-9' (H3K9me), leading to epigenetic repression. In contrast, it is excluded from chromatin when 'Tyr-41' of histone H3 is phosphorylated (H3Y41ph). Can interact with lamin-B receptor (LBR). This interaction can contribute to the association of the heterochromatin with the inner nuclear membrane. Involved in the formation of functional kinetochore through interaction with MIS12 complex proteins.
Résumé Entrez
This gene encodes a highly conserved nonhistone protein, which is a member of the heterochromatin protein family. The protein is enriched in the heterochromatin and associated with centromeres. The protein has a single N-terminal chromodomain which can bind to histone proteins via methylated lysine residues, and a C-terminal chromo shadow-domain (CSD) which is responsible for the homodimerization and interaction with a number of chromatin-associated nonhistone proteins. The encoded product is involved in the formation of functional kinetochore through interaction with essential kinetochore proteins. The gene has a pseudogene located on chromosome 3. Multiple alternatively spliced variants, encoding the same protein, have been identified.
Modification post-traductionnelle
Phosphorylation of HP1 and LBR may be responsible for some of the alterations in chromatin organization and nuclear structure which occur at various times during the cell cycle (By similarity). Phosphorylated during interphase and possibly hyper-phosphorylated during mitosis.
Localisation cellulaire
Nucleus. Chromosome. Chromosome > Centromere.
Colocalizes with HNRNPU in the nucleus (PubMed:19617346). Component of centromeric and pericentromeric heterochromatin. Associates with chromosomes during mitosis. Associates specifically with chromatin during metaphase and anaphase.
