In Silico Study of Human Gap Junction Beta-2 Protein by Homology Modeling
Genomics & Informatics
;
: 70-75, 2010.
Artículo
en Inglés
| WPRIM
| ID: wpr-199710
ABSTRACT
Asp66his, Asp54Lys, and Asp50Asn are mutations in connexin 26 that are observed in the clinic and give rise to autosomal dominant syndromes. They are the result of point mutations in the human gap junction beta-2 gene. In order to investigate the structural mechanism of Bart-Pumphrey Syndrome, Keratitis-Ichthyosis-Deafness Syndrome, and Vohwinkel Syndrome, homology modeling was carried out. Asp66 has direct contact with Asn62 by two hydrogen bonds in the wild-type protein, and in Asp66His, the biggest change observed is a tremendous energy increase caused by hydrogen bond breakage to Asn62. Shifts in the side chain and new hydrogen bond formation are observed for Lys54 compared to the wild-type protein (Asn54) and result in closer contact to Val84. Asp50Asn causes a significant decrease in bond energy, and residual charge reversal repels the ion and metabolites and, hence, inhibits their transportation. Such perturbations are likely to be a factor contributing to abnormal functioning of ion channels, resulting cell death and disease.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Transportes
/
Anomalías Múltiples
/
Simulación por Computador
/
Deformidades Congénitas de la Mano
/
Muerte Celular
/
Mutación Puntual
/
Queratodermia Palmoplantar
/
Uniones Comunicantes
/
Conexinas
/
Honorarios y Precios
Tipo de estudio:
Evaluación Económica en Salud
Límite:
Humanos
Idioma:
Inglés
Revista:
Genomics & Informatics
Año:
2010
Tipo del documento:
Artículo
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