Poly (A) RNA inBacillus subtilis: Identification of the polyadenylylation site of flagellin mRNA

Autor: Nilima Sarkar, Gong-jie Cao
Rok vydání: 1993
Předmět:
Zdroj: FEMS Microbiology Letters. 108:281-285
ISSN: 1574-6968
0378-1097
DOI: 10.1111/j.1574-6968.1993.tb06116.x
Popis: Using improved procedures for the synthesis, amplification, and cloning of DNA complementary to bacterial poly(A) RNA, we succeeded in deducing the 3′-terminal sequence of polyadenylylated flagellin mRNA encoded by the Bacillus subtilis hag gene. The site of polyadenylylation was found to be just upstream of the terminal stem-loop structure corresponding to the putative rho-independent transcription terminator of the hag gene. This corresponds to the major polyadenylation site of Escherichia coli lipoprotein ( lpp ) mRNA [G.C. Gao and N. Sarkar (1992) Proc. Natl. Acad. Sci. USA 89, 7546–7550], suggesting that the primary transcript is processed by endonucleolytic cleavage prior to polyadenylylation in Gram-positive as well as in Gram-negative bacteria.
Databáze: OpenAIRE