Nucleic Acids Research, 1985, Vol. 13, No. 4 1223-1237
© 1985
Articles |
The complete sequence of the chicken
-cardiac actin gene: a highly conserved vertebrate gene
Department of Cell Biology, Baylor College of Medicine Houston, TX 77030, USA
*To whom correspondence should be addressed
Received November 23, 1984. Revised January 29, 1985. Accepted January 29, 1985.
We sequenced the entire chicken
-cardiac actin gene. A single intron was positioned 20 bp upstream from the initiation ATG codon in the 5' non-coding region while the coding region was interrupted by 5 introns at amino acid positions 41/42, 150, 204, 267, and 327/328.Sequencing allowed the first comparison of the
-cardiac and
-skeletal actin transcriptional promoters. These highly G+C rich promoters share two regions of homology which are found at position 134 (10 bp) end 296 (12 bp) in the
-cardiac actin promoter. A smaller 9 bp motif (CCGCCCCGG) homologous to the 134 sequence was detected before, between and after the TATA and CAAT boxes of the
-cardiac actin gene. The polyadenylation signal (AATAAA) was located 156 bp downstream from the translation termination codon. The complete length of the
-cardiac actin mRNA excluding the poly A tail is 1370 nucleotides. The 3' noncoding transcribed portion of the chicken
-cardiac actin gene was found to be extraordinarily conserved when compared to the human and rat
-cardiac actin mRNA sequences.
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