Protein Information

Name RNase
Synonyms HP RNase; Ribonuclease; Ribonuclease A; Pancreatic ribonuclease; Pancreatic ribonuclease precursor; RIB 1; RIB1; RNASE1…

Compound Information

Name paraquat
CAS 1,1′-dimethyl-4,4′-bipyridinium

Reference List

PubMed Abstract RScore(About this table)
10759888 Nanbu-Wakao R, Asoh S, Nishimaki K, Tanaka R, Ohta S: Bacterial cell death induced by human pro-apoptotic Bax is blocked by an RNase E mutant that functions in an anti-oxidant pathway. Genes Cells. 2000 Mar;5(3):155-67.

CONCLUSIONS: The N-terminal region of the RNase E protein inhibits bacterial death induced by human Bax as well as paraquat through a unique mechanism that is distinct from RNA digestion.
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10986244 Gifford CM, Blaisdell JO, Wallace SS: Multiprobe RNase protection assay analysis of mRNA levels for the Escherichia coli oxidative DNA glycosylase genes under conditions of oxidative stress. J Bacteriol. 2000 Oct;182(19):5416-24.

None of the genes were induced by hydrogen peroxide, paraquat, X rays, or conditions that induce the SOS response.
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19219992 Wu J, Jiang Z, Liu M, Gong X, Wu S, Burns CM, Li Z: Polynucleotide phosphorylase protects Escherichia coli against oxidative stress. Biochemistry. 2009 Mar 10;48(9):2012-20.


Further, when challenged with H (2) O (2), PNPase-deficient cells accumulate 8-oxoG in cellular RNA to a greater extent than wild-type cells, suggesting that this RNase functions in minimizing oxidized RNA in vivo.
1(0,0,0,1) Details
11502194 Hayakawa H, Kuwano M, Sekiguchi M: Specific binding of 8-oxoguanine-containing RNA to polynucleotide phosphorylase protein. Biochemistry. 2001 Aug 21;40(33):9977-82.

The RNase protection assay and gel shift assay revealed that some proteins bind specifically to 8-oxoguanine-containing RNA, hence preventing nuclease attacks.
This protein was identified as polynucleotide phosphorylase, encoded by the pnp gene. pnp (-)() mutants are hyperresistant to paraquat, a drug that induces oxidative stress in the cell.
1(0,0,0,1) Details