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Compilation and comparison of the sequence context around the AUG startcodons in Saccharomyces cerevisiae mRNAs

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Hamilton, Robert, Watanabe, Colin K., de Boer, Herman A.·1987·Nucleic Acids Research

Abstract

The nucleotide sequence of the translation initiation regions of 96 Saccharomyces cerevisiae mRNAs was compiled and compared. The entire 5' untranslated sequence of most mRNAs is very rich in A-residues. G-residues are underrepresented in the untranslated region. The AUG startcodon context appeared to be distinctly different from that of animal mRNAs, although an A-residue at -3 also occurs very frequently (81 percent) in yeast mRNAs. The prevailing codon 3' adjacent to the AUG is the UCU serine codon. All these features are more extreme in the highly expressed genes. Fifty percent of all highly expressed genes use the UCU serine codon as second triplet. In this group G-residues are completely absent in the 7 bases preceding the startcodon and an A-residue occurs at position -1 and -3 at a frequency of 89 percent and 100 percent, respectively. The abundance of A-residues throughout the leader suggests that unstructured mRNA is required for efficient translation initiation in yeast. The consensus sequence for the AUG context in highly expressed genes can be summarized as follows: (Sequence: see text).

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Metadata

Authors
Hamilton, R., Watanabe, C. K., & de Boer, H. A.
Venue
Nucleic Acids Research
Published
1987
Volume
15
Issue
8
Pages
3581-3593
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2134887033
Cited by
333
References
1
FWCI
8.45
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Compilation and comparison of the sequence context around the AUG startcodons in Saccharomyces cerevisiae mRNAs. https://app.cochat.ai/papers/10.1093/nar/15.8.3581
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Hamilton, R., Watanabe, C. K., & de Boer, H. A. (1987). Compilation and comparison of the sequence context around the AUG startcodons in Saccharomyces cerevisiae mRNAs. Nucleic Acids Research. https://doi.org/10.1093/nar/15.8.3581

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