Hot and crispy : CRISPR-Cas systems in the hyperthermophile Sulfolobus solfataricus
MetadataShow full item record
The CRISPR (clustered regularly interspaced short palindromic repeats) and Cas (CRISPR-associated) genes are widely spread in bacteria and archaea, representing an intracellular defence system against invading viruses and plasmids. In the system, fragments from foreign DNA are captured and integrated into the host genome at the CRISPR locus. The locus is transcribed and the resulting RNAs are processed by Cas6 into small crRNAs (CRISPR RNAs) that guide a variety of effector complexes to degrade the invading genetic elements. Many bacteria and archaea have one major type of effector complex. However, Sulfolobus solfataricus strain P2 has six CRISPR loci with two families of repeats, four cas6 genes and three different types of effector complex. These features make S. solfataricus an important model for studying CRISPR-Cas systems. In the present article, we review our current understanding of crRNA biogenesis and its effector complexes, subtype I-A and subtype III-B, in S. solfataricus. We also discuss the differences in terms of mechanisms between the subtype III-B systems in S. solfataricus and Pyrococcus furiosus.
Zhang , J & White , M F 2013 , ' Hot and crispy : CRISPR-Cas systems in the hyperthermophile Sulfolobus solfataricus ' , Biochemical Society Transactions , vol. 41 , no. 6 , pp. 1422-1426 . https://doi.org/10.1042/BST20130031
Biochemical Society Transactions
Copyright 2013, Biochemical Society.
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Showing items related by title, author, creator and subject.
Sokolowski, Richard David; Graham, Shirley; White, Malcolm F (2014-06-02) - Journal articleCRISPR-Cas is an adaptive prokaryotic immune system, providing protection against viruses and other mobile genetic elements. In type I and type III CRISPR-Cas systems, CRISPR RNA (crRNA) is generated by cleavage of a primary ...
The CRISPR ancillary effector Can2 is a dual-specificity nuclease potentiating type III CRISPR defence Zhu, Wenlong; McQuarrie, Stuart John; Gruschow, Sabine; McMahon, Stephen; Graham, Shirley; Gloster, Tracey; White, Malcolm (2021-03-18) - Journal articleCells and organisms have a wide range of mechanisms to defend against infection by viruses and other mobile genetic elements (MGE). Type III CRISPR systems detect foreign RNA and typically generate cyclic oligoadenylate ...
Athukoralage, Januka Sahan; McMahon, Stephen; Zhang, Changyi; Gruschow, Sabine; Graham, Shirley; Krupovic, Mart; Whitaker, Rachel; Gloster, Tracey; White, Malcolm (2020-01-23) - Journal articleThe CRISPR system in bacteria and archaea provides adaptive immunity against mobile genetic elements. Type III CRISPR systems detect viral RNA, resulting in the activation of two regions of the Cas10 protein: an HD nuclease ...