Recent studies have identified several genetic mutations within the BAH domain of human Origin Recognition Complex subunit 1 (hORC1BAH), including the R105Q mutation, implicated in Meier-Gorlin Syndrome (MGS).
Mutations in ORC1, encoding the largest subunit of the origin recognition complex, cause microcephalic primordial dwarfism resembling Meier-Gorlin syndrome.
The R105Q mutation reduces the hORC1BAH-DNA binding affinity, leading to impaired hORC1BAH-nucleosome interaction, which likely influences DNA replication initiation and MGS pathogenesis.
In this study, we identified a novel p.Ala15Val (c.44C>T) mutation by genomic DNA sequencing in a Turkish child presenting severe tantrum, confusion, gait disturbances and loss of speech abilities in addition to hyperornithinemia, hyperammonemia and homocitrullinuria.
In this study, we identified a novel p.Ala15Val (c.44C>T) mutation by genomic DNA sequencing in a Turkish child presenting severe tantrum, confusion, gait disturbances and loss of speech abilities in addition to hyperornithinemia, hyperammonemia and homocitrullinuria.