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Classification and Nomenclature of CRISPR-Cas Systems: Where from Here?


ABSTRACT: As befits an immune mechanism, CRISPR-Cas systems are highly variable with respect to Cas protein sequences, gene composition, and organization of the genomic loci. Optimal classification of CRISPR-Cas systems and rational nomenclature for CRISPR-associated genes are essential for further progress of CRISPR research. These are highly challenging tasks because of the complexity of CRISPR-Cas and their fast evolution, including frequent module shuffling, as well as the lack of universal markers for a consistent evolutionary classification. The complexity and variability of CRISPR-Cas systems necessitate a multipronged approach to classification and nomenclature. We present a brief summary of the current state of the art and discuss further directions in this area.

SUBMITTER: Makarova KS 

PROVIDER: S-EPMC6636873 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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Classification and Nomenclature of CRISPR-Cas Systems: Where from Here?

Makarova Kira S KS   Wolf Yuri I YI   Koonin Eugene V EV  

The CRISPR journal 20181001 5


As befits an immune mechanism, CRISPR-Cas systems are highly variable with respect to Cas protein sequences, gene composition, and organization of the genomic loci. Optimal classification of CRISPR-Cas systems and rational nomenclature for CRISPR-associated genes are essential for further progress of CRISPR research. These are highly challenging tasks because of the complexity of CRISPR-Cas and their fast evolution, including frequent module shuffling, as well as the lack of universal markers fo  ...[more]

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