Programmed DNA destruction by miniature CRISPR-Cas14 enzymes.
Programmed DNA destruction by miniature CRISPR-Cas14 enzymes.
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DOI:
10.1126/science.aav4294
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发表时间:
2018-11-16
期刊:
影响因子:
--
通讯作者:
Doudna JA
中科院分区:
文献类型:
--
作者:
Harrington LB;Burstein D;Chen JS;Paez-Espino D;Ma E;Witte IP;Cofsky JC;Kyrpides NC;Banfield JF;Doudna JA
CRISPR-Cas systems provide microbes with adaptive immunity to infectious nucleic acids and are widely employed as genome editing tools. These tools utilize RNA-guided Cas proteins whose large size (950—1400 amino acids) has been considered essential to their specific DNA- or RNA-targeting activities. Here we present a set of CRISPR-Cas systems from uncultivated archaea that contain Cas14, a family of exceptionally compact RNA-guided nucleases (400—700 amino acids). Despite their small size, Cas14 proteins are capable of targeted single-stranded DNA (ssDNA) cleavage without restrictive sequence requirements. Moreover, target recognition by Cas14 triggers non-specific cutting of ssDNA molecules, an activity that enables high-fidelity SNP genotyping (Cas14-DETECTR). Metagenomic data show that multiple CRISPR-Cas14 systems evolved independently and suggest a potential evolutionary origin of single-effector CRISPR-based adaptive immunity.
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影响因子:
48
作者:
Langmead, Ben;Salzberg, Steven L.
通讯作者:
Salzberg, Steven L.
DOI:
10.1126/science.aaf5573
发表时间:
2016-08-05
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Abudayyeh OO;Gootenberg JS;Konermann S;Joung J;Slaymaker IM;Cox DB;Shmakov S;Makarova KS;Semenova E;Minakhin L;Severinov K;Regev A;Lander ES;Koonin EV;Zhang F
通讯作者:
Zhang F
影响因子:
64.8
作者:
East-Seletsky A;O'Connell MR;Knight SC;Burstein D;Cate JH;Tjian R;Doudna JA
通讯作者:
Doudna JA
影响因子:
14.9
作者:
Grissa, Ibtissem;Vergnaud, Gilles;Pourcel, Christine
通讯作者:
Pourcel, Christine
影响因子:
16
作者:
Ma E;Harrington LB;O'Connell MR;Zhou K;Doudna JA
通讯作者:
Doudna JA