An Unintentional Discovery of a Fluorogenic DNA Probe for Ribonucleaseâ
I.
Chembiochem
; 21(4): 464-468, 2020 02 17.
Article
em En
| MEDLINE
| ID: mdl-31420934
ABSTRACT
Ribonucleaseâ
I belongs to a class of nonspecific endoribonucleases and plays many important roles in a variety of biological and cellular processes. While their ubiquitous nature and high activity contribute to the well-known problem of RNase contamination in experimentation, their abundance in bacteria can potentially be leveraged as a biosensor target. As a result, there is substantial interest in generating a specific and reliable probe for RNase detection for a variety of purposes. To that end, we report on our unintentional discovery of the RNaseâ
I probe RFA13-1 isolated through in vitro selection with the crude extracellular mixture from Clostridium difficile contaminated with Klebsiella aerogenes as a selection target. Characterization of RFA13-1 reveals that it exhibits high sensitivity to Escherichia coli RNaseâ
I with a detection limit of 1.39â
pm. Furthermore, RFA13-1 also shows high specificity for RNaseâ
I produced only in select bacteria from the Enterobacteriaceae family. As a result, this probe offers a simple tool for RNaseâ
I detection with potential applications in RNase functional studies, ribonuclease contamination monitoring, and bacterial detection.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ribonuclease Pancreático
/
Sondas de DNA
/
Enterobacteriaceae
/
Corantes Fluorescentes
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article