The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.
Cas9 specifies functional viral targets during CRISPR–Cas adaptation
Open accessAbstract
Clustered regularly interspaced short palindromic repeat (CRISPR) loci and their associated (Cas) proteins provide adaptive immunity against viral infection in prokaryotes. Upon infection, short phage sequences known as spacers integrate between CRISPR repeats and are transcribed into small RNA molecules that guide the Cas9 nuclease to the viral targets (protospacers). Streptococcus pyogenes Cas9 cleavage of the viral genome requires the presence of a 5′-NGG-3′ protospacer adjacent motif (PAM) sequence immediately downstream of the viral target. It is not known whether and how viral sequences flanked by the correct PAM are chosen as new spacers. Here we show that Cas9 selects functional spacers by recognizing their PAM during spacer acquisition. The replacement of cas9 with alleles that lack the PAM recognition motif or recognize an NGGNG PAM eliminated or changed PAM specificity during spacer acquisition, respectively. Cas9 associates with other proteins of the acquisition machinery (Cas1, Cas2 and Csn2), presumably to provide PAM-specificity to this process. These results establish a new function for Cas9 in the genesis of prokaryotic immunological memory.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
A Programmable Dual-RNA–Guided DNA Endonuclease in Adaptive Bacterial Immunity
Jinek, M., Chylinski, K., Fonfara, I., Hauer, M., Doudna, J. A., & Charpentier, E. (2012) · Science · doi:10.1126/science.1225829 · Cited by 17,116
WebLogo: A Sequence Logo Generator: Figure 1
Crooks, G. E., Hon, G., Chandonia, J.-M., & Brenner, S. E. (2004) · Genome Research · doi:10.1101/gr.849004 · Cited by 12,386
Enzymatic assembly of DNA molecules up to several hundred kilobases
Gibson, D. G., Young, L., Chuang, R.-Y., Venter, J. C., Hutchison, C. A., & Smith, H. O. (2009) · Nature Methods · doi:10.1038/nmeth.1318 · Cited by 9,996
CRISPR Provides Acquired Resistance Against Viruses in Prokaryotes
Barrangou, R., Fremaux, C., Deveau, H., Richards, M., Boyaval, P., Moineau, S., Romero, D. A., & Horvath, P. (2007) · Science · doi:10.1126/science.1138140 · Cited by 5,947
Gasiunas, G., Barrangou, R., Horvath, P., & Siksnys, V. (2012) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1208507109 · Cited by 2,769
CRISPR RNA Maturation by Trans-Encoded Small RNA and Host Factor RNase III
Deltcheva, E., Chylinski, K., Sharma, C. M., Gonzales, K., Chao, Y., Pirzada, Z. A., Eckert, M. R., Vogel, J., & Charpentier, E. (2011) · Nature · doi:10.1038/nature09886 · Cited by 2,563
RNA-guided editing of bacterial genomes using CRISPR-Cas systems
Jiang, W., Bikard, D., Cox, D., Zhang, F., & Marraffini, L. A. (2013) · Nature Biotechnology · doi:10.1038/nbt.2508 · Cited by 2,429
Evolution and classification of the CRISPR–Cas systems
Makarova, K. S., Haft, D. H., Barrangou, R., Brouns, S. J. J., Charpentier, E., Horvath, P., Moineau, S., Mojica, F. J. M., Wolf, Y. I., Yakunin, A. F., et al. (2011) · Nature Reviews Microbiology · doi:10.1038/nrmicro2577 · Cited by 2,331
The CRISPR/Cas bacterial immune system cleaves bacteriophage and plasmid DNA
Garneau, J. E., Dupuis, M.-È., Villion, M., Romero, D. A., Barrangou, R., Boyaval, P., Fremaux, C., Horvath, P., Magadán, A. H., & Moineau, S. (2010) · Nature · doi:10.1038/nature09523 · Cited by 2,328
DNA interrogation by the CRISPR RNA-guided endonuclease Cas9
Sternberg, S. H., Redding, S., Jinek, M., Greene, E. C., & Doudna, J. A. (2014) · Nature · doi:10.1038/nature13011 · Cited by 1,822
Cited by
An updated evolutionary classification of CRISPR–Cas systems
Makarova, K. S., Wolf, Y. I., Alkhnbashi, O. S., Costa, F., Shah, S. A., Saunders, S. J., Barrangou, R., Brouns, S. J. J., Charpentier, E., Haft, D. H., et al. (2015) · Nature Reviews Microbiology · doi:10.1038/nrmicro3569 · Cited by 2,480
C2c2 is a single-component programmable RNA-guided RNA-targeting CRISPR effector
Abudayyeh, O. O., Gootenberg, J. S., Konermann, S., Joung, J., Slaymaker, I. M., Cox, D. B. T., Shmakov, S., Makarova, K. S., Semenova, E., Minakhin, L., et al. (2016) · Science · doi:10.1126/science.aaf5573 · Cited by 2,336
CRISPR–Cas9 Structures and Mechanisms
Jiang, F., & Doudna, J. A. (2017) · Annual Review of Biophysics · doi:10.1146/annurev-biophys-062215-010822 · Cited by 2,029
Unconstrained genome targeting with near-PAMless engineered CRISPR-Cas9 variants
Walton, R. T., Christie, K. A., Whittaker, M. N., & Kleinstiver, B. P. (2020) · Science · doi:10.1126/science.aba8853 · Cited by 1,233
Richardson, C. D., Ray, G. J., DeWitt, M. A., Curie, G. L., & Corn, J. E. (2016) · Nature Biotechnology · doi:10.1038/nbt.3481 · Cited by 1,098
Metadata
- Authors
- Heler, R., Samai, P., Modell, J. W., Weiner, C., Goldberg, G. W., Bikard, D., & Marraffini, L. A.
- Venue
- Nature
- Published
- 2015-02-18
- Volume
- 519
- Issue
- 7542
- Pages
- 199-202
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W2060259395
- Cited by
- 419
- References
- 33
- FWCI
- 18.01
- Type
- journal article
- Language
- en
- Open access
- green
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Cas9 specifies functional viral targets during CRISPR–Cas adaptation. https://app.cochat.ai/papers/10.1038/nature14245
- The paper
- Heler, R., Samai, P., Modell, J. W., Weiner, C., Goldberg, G. W., Bikard, D., & Marraffini, L. A. (2015). Cas9 specifies functional viral targets during CRISPR–Cas adaptation. Nature. https://doi.org/10.1038/nature14245
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
