Histone tail peptides comprise the flexible portion of chromatin, the substance which serves as the packaging for the eukaryotic genome. According to the histone code hypothesis, reader protein domains (chromodomains) can recognize modifications of amino acid residues within these peptides, regulating the expression of genes. We have performed simulations on models of chromodomain helicase DNA-...

The heterochromatin protein 1 (HP1) family is thought to be an important structural component of heterochromatin. HP1 proteins bind via their chromodomain to nucleosomes methylated at lysine 9 of histone H3 (H3K9me). To investigate the role of HP1 in maintaining heterochromatin structure, we used a dominant negative approach by expressing truncated HP1alpha or HP1beta proteins lacking a functio...

Tat-interactive protein 60 (Tip60) is a member of the MYST family of histone acetyltransferases (HATs). In addition to its HAT domain, Tip contains a heterochromatin-associated protein 1-like chromodomain and a zinc finger-like domain. Several alternative splice variants of Tip60 have been characterized, including full-length Tip60alpha, Tip60beta (which lacks exon V encoded by the Tip60 gene),...

Introduction CHARGE syndrome is a genetic entity caused by mutations in the chromodomain helicase DNA-binding protein 7 gene (CHD7) at 8q12.1. There are pleiotropic signs among individuals with this disorder. Diagnosis clinical using medical criteria. CHD7 usually found 90% of affected patients. Objectives The aim study was to report behavioral and their phenotype-genotype correlations. Methods...

CHARGE syndrome is a congenital disorder caused by mutation of the chromodomain helicase DNA binding protein 7 (CHD7) gene and is characterized by multiple anomalies including ocular coloboma, heart defects, choanal atresia, retarded growth and development, genital and/or urological abnormalities, ear anomalies, and hearing loss. In the present study, 76% of subjects had some type of endocrine ...

Aryl hydrocarbon receptor (AHR) is a ligand-activated transcription factor that regulates genes involved in drug/xenobiotic metabolism, cell cycle progression, cell fate determination, immune function, and inflammatory response. Increasing evidence that AHR plays a role in the pathophysiology of a number of human disease states is driving the need for improved pharmacological tools to be used f...