PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12379151-1 2002 BACKGROUND: Huntington"s disease (HD) pathogenesis is due to an expanded polyglutamine tract in huntingtin, but the specificity of neuronal loss compared with other polyglutamine disorders also implies a role for the protein"s unknown inherent function. polyglutamine 73-86 huntingtin Drosophila melanogaster 96-106