Activation of a cryptic TACTAAC box in the Saccharomyces cerevisiae actin intron.
Activation of a cryptic TACTAAC box in the Saccharomyces cerevisiae actin intron.
复制标题
酿酒酵母肌动蛋白内含子中神秘 TACTAAC 盒的激活。
DOI:
10.1128/mcb.6.5.1571-1578.1986
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发表时间:
1986
影响因子:
5.3
通讯作者:
Rossi,J
中科院分区:
文献类型:
--
作者:
Cellini,A;Parker,R;McMahon,J;Guthrie,C;Rossi,J
We constructed a translational fusion between theSaccharomyces cerevisiaeactin gene and theEscherichia coliβ-galactosidase structural gene such that expression of beta-galactosidase activity required accurate splicing of the actin intron. Using this chimeric gene, we generated a series of internal deletions which removed the TACTAAC box or, in addition, TACTAAC-like sequences within the intron. Analysis of the fusion transcripts produced in these deletions allowed us to conclude that the TACTAAC-like sequence TACTAAG can substitute, albeit inefficiently, for the authentic TACTAAC box in the splicing process. These results indicate that the yeast splicing machinery can utilize a cryptic TACTAAC box, but there are requirements for primary sequence and proper position.