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ARS Home » Research » Publications at this Location » Publication #172365
Title: MELEAGRIS GALLOPAVO INSULIN-LIKE GROWTH FACTOR-II (IGF-II) PRECURSOS GENE, INTRON 3

Author
item Richards, Mark
item Poch, Stephen
item CLARKE, SARAH - ROOSEVELT HS VOL.
item McMurtry, John

Submitted to: Genbank
Publication Type: Abstract Only
Publication Acceptance Date: 12/7/2004
Publication Date: 12/12/2004
Citation: Richards, M.P., Poch, S.M., Clarke, S.M., McMurtry, J.P. Meleagris gallopavo insulin-like growth factor-II (IGF-II) precursor gene, intron 3. GenBank 2004. Accession No. AY829237.

Interpretive Summary:

Technical Abstract: Primer-directed polymerase chain reaction (PCR) was used to completely sequence 713 bp of the third intron contained in the turkey insulin-like growth factor-II (IGF-II) gene from genomic DNA samples. The turkey IGF-II gene codes for a 187 amino acid pre-proprotein that includes a signal peptide, the mature IGF-II hormone, and a C-terminal extension peptide comprised of 24, 67 and 96 amino acids, respectively. Surprisingly, turkey IGF-II intron 3 showed a high degree (approximately 90%) of nucleotide sequence homology with the corresponding region of the chicken IGF-II gene. Typically, intronic sequence demonstrates a great deal of variation even among closely related species such as chickens and turkeys. This sequence data will be useful in studying the structure and expression of the turkey IGF-II gene in poultry.