Reversible gene silencing through frameshift indels and frameshift scars provide adaptive plasticity for Mycobacterium tuberculosis.
Reversible gene silencing through frameshift indels and frameshift scars provide adaptive plasticity for Mycobacterium tuberculosis.
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DOI:
10.1038/s41467-021-25055-y
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发表时间:
2021-08-04
影响因子:
16.6
通讯作者:
Alland D
中科院分区:
文献类型:
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作者:
Gupta A;Alland D
Mycobacterium tuberculosis can adapt to changing environments by non-heritable mechanisms. Frame-shifting insertions and deletions (indels) may also participate in adaptation through gene disruption, which could be reversed by secondary introduction of a frame-restoring indel. We present ScarTrek, a program that scans genomic data for indels, including those that together disrupt and restore a gene’s reading frame, producing “frame-shift scars” suggestive of reversible gene inactivation. We use ScarTrek to analyze 5977 clinical M. tuberculosis isolates. We show that indel frequency inversely correlates with genomic linguistic complexity and varies with gene-position and gene-essentiality. Using ScarTrek, we detect 74 unique frame-shift scars in 48 genes, with a 3.74% population-level incidence of unique scar events. We find multiple scars in the ESX-1 gene cluster. Six scars show evidence of convergent evolution while the rest shared a common ancestor. Our results suggest that sequential indels are a mechanism for reversible gene silencing and adaptation in M. tuberculosis. Bacterial adaptation through frame-shifting insertions and deletions (indels) could be reversed by secondary introduction of a frame-restoring indel. Here, the authors develop ScarTrek, a program that scans genomic data for different indels, and analyze 5977 clinical M. tuberculosis isolates for indel frequency.
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影响因子:
48
作者:
Langmead, Ben;Salzberg, Steven L.
通讯作者:
Salzberg, Steven L.
影响因子:
6.4
作者:
DeJesus MA;Gerrick ER;Xu W;Park SW;Long JE;Boutte CC;Rubin EJ;Schnappinger D;Ehrt S;Fortune SM;Sassetti CM;Ioerger TR
通讯作者:
Ioerger TR
DOI:
10.1073/pnas.1524915113
发表时间:
2016-08-16
影响因子:
11.1
作者:
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通讯作者:
Savage, David F.
影响因子:
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作者:
Clemmensen, Helena Strand;Knudsen, Niels Peter Hell;Aagaard, Claus
通讯作者:
Aagaard, Claus
影响因子:
30.8
作者:
通讯作者:
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