Bovine heart fructose 6-P,2-kinase: Fructose 2,6-bisphosphatase Messenger-RNA and gene structure

Y. Tsuchiya, K. Uyeda

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Previously we described the coding region of bovine heart Fructose 6-P,2-kinase:Fructose 2,6-bisphosphatase as determined from cDNA. We have isolated several overlapping clones and determined the DNAs which encode the entire mRNA of bovine heart bifunctional enzyme, including the 5′- and 3′-noncoding regions. The exon-intron structure of the 27-kb gene was determined and shown to consist of 16 exons. There are one primary and two secondary transcription initiation sites with the coding region beginning at exon 2. Exons 3-7 encode the Fructose 6-P,2-kinase domain, and exons 9-14 encode the Fructose 2,6-biphosphatase domain. Exon 15 is a unique exon for the heart type isozyme and contains the phosphorylation sites for protein kinases A and C. Alternative splicing of this exon accounts for the expression of two heart type isozymes in cardiac muscle. Exon 16 (also unique), 1820 bp long and located 7 kb downstream of exon 15, encodes the short C-terminus of the enzyme and is completely different from that of the rat heart bifunctional enzyme gene.

Original languageEnglish (US)
Pages (from-to)467-474
Number of pages8
JournalArchives of Biochemistry and Biophysics
Issue number2
StatePublished - May 1994

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology


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