Abstract:
:The NFAR gene (nuclear factor associated with dsRNA) encodes a putative transcription-associated factor that we have shown is a substrate for the interferon-inducible, dsRNA-dependent protein kinase, PKR. However, our protein expression analysis has revealed that NFAR exists as two major protein species of 90 kDa (NFAR-1) and 110 kDa (NFAR-2) in the cell. To resolve the genetic identity of NFAR-1 and -2, we carried out sequence analysis of genomic and cDNA NFAR clones and determined that the coding region of this gene spans 16.2 kb and comprises 21 exons. Our data indicate that NFAR-1 and -2 arise from a single gene on chromosome 19p13 and are generated through alternative splicing events. NFAR-1 (HGMW-approved symbol ILF3) was found to comprise 1 extra exon, 18, that contains several stop codons to ensure termination of the protein at amino acid 702. In contrast, NFAR-2 lacks this exon, though it comprises an additional 3 coding exons (exons 19, 20, and 21) located at the carboxyl region to generate an extended product of 894 amino acids. Our studies, the first to elucidate the gene structure and chromosomal assignment of NFAR, establish the genetic basis for future NFAR research in humans.
journal_name
Genomicsjournal_title
Genomicsauthors
Saunders LR,Jurecic V,Barber GNdoi
10.1006/geno.2000.6423subject
Has Abstractpub_date
2001-01-15 00:00:00pages
256-9issue
2eissn
0888-7543issn
1089-8646pii
S0888-7543(00)96423-1journal_volume
71pub_type
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