Archaeal CRISPR-based immune systems: exchangeable functional modules.

Abstract:

:CRISPR (clustered regularly interspaced short palindromic repeats)-based immune systems are essentially modular with three primary functions: the excision and integration of new spacers, the processing of CRISPR transcripts to yield mature CRISPR RNAs (crRNAs), and the targeting and cleavage of foreign nucleic acid. The primary target appears to be the DNA of foreign genetic elements, but the CRISPR/Cmr system that is widespread amongst archaea also specifically targets and cleaves RNA in vitro. The archaeal CRISPR systems tend to be both diverse and complex. Here we examine evidence for exchange of functional modules between archaeal systems that is likely to contribute to their diversity, particularly of their nucleic acid targeting and cleavage functions. The molecular constraints that limit such exchange are considered. We also summarize mechanisms underlying the dynamic nature of CRISPR loci and the evidence for intergenomic exchange of CRISPR systems.

journal_name

Trends Microbiol

journal_title

Trends in microbiology

authors

Garrett RA,Vestergaard G,Shah SA

doi

10.1016/j.tim.2011.08.002

subject

Has Abstract

pub_date

2011-11-01 00:00:00

pages

549-56

issue

11

eissn

0966-842X

issn

1878-4380

pii

S0966-842X(11)00149-1

journal_volume

19

pub_type

杂志文章,评审
  • Variation in bacterial flagellins: from sequence to structure.

    abstract::Bacterial motility relies chiefly on the rotation of a molecular propeller, the flagellar filament, which is constructed from the protein flagellin. Here, flagellin sequence conservation and diversity is examined in the light of the recently determined flagellar filament structure. As expected, the surface-exposed dom...

    journal_title:Trends in microbiology

    pub_type: 杂志文章

    doi:10.1016/j.tim.2006.02.008

    authors: Beatson SA,Minamino T,Pallen MJ

    更新日期:2006-04-01 00:00:00

  • Offering surprises: TCA cycle regulation in Corynebacterium glutamicum.

    abstract::Corynebacterium glutamicum, a Gram-positive soil bacterium, is used for the production of l-glutamate and l-lysine, both of which are derived from intermediates of the tricarboxylic acid (TCA) cycle. Recent studies have revealed that this amphibolic pathway is subject to complex regulation not only at the transcriptio...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2007.08.004

    authors: Bott M

    更新日期:2007-09-01 00:00:00

  • Effector-triggered immunity by the plant pathogen Phytophthora.

    abstract::A new genetic locus mediating avirulence in the potato late blight pathogen Phytophthora infestans has been discovered. The Avr3b-Avr10-Avr11 locus is recognized by three different potato resistance genes, and is different from other Avr loci that have been identified thus far. This locus encodes a large protein with ...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2006.09.004

    authors: Qutob D,Tedman-Jones J,Gijzen M

    更新日期:2006-11-01 00:00:00

  • On the facultative requirement of the bacterial RNA chaperone, Hfq.

    abstract::The pleiotropic post-transcriptional regulator Hfq is an RNA chaperone that facilitates pairing interactions between small regulatory RNAs (sRNAs) and their mRNA targets in several bacteria. However, this classical pattern, derived from the Escherichia coli model, is not applicable to the whole bacterial kingdom. In t...

    journal_title:Trends in microbiology

    pub_type: 杂志文章

    doi:10.1016/j.tim.2009.06.003

    authors: Jousselin A,Metzinger L,Felden B

    更新日期:2009-09-01 00:00:00

  • How rolling circle plasmids control their copy number.

    abstract::Rolling circle DNA replication is inherently continuous and unregulated. This 'go-for-broke' strategy works well for lytic phages but is suicidal for plasmids that must coexist with their host. Plasmids have consequently evolved elaborate copy number control systems that operate at the transcriptional, translational a...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/S0966-842X(97)01143-8

    authors: Rasooly A,Rasooly RS

    更新日期:1997-11-01 00:00:00

  • Inhibitors of HIV-1 transcription.

    abstract::No curative drug against HIV has yet been found, despite enormous efforts aimed at reverse transcriptase and a variety of other targets. The long terminal repeat (LTR) of HIV-1 has recently become a promising site for antiviral action. This article briefly summarizes information on the nature of this target and potent...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/0966-842x(94)90666-1

    authors: Li CJ,Dezube BJ,Biswas DK,Ahlers CM,Pardee AB

    更新日期:1994-05-01 00:00:00

  • The role of microbiota in infectious disease.

    abstract::The intestine harbors an ecosystem composed of the intestinal mucosa and the commensal microbiota. The microbiota fosters development, aids digestion and protects host cells from pathogens - a function referred to as colonization resistance. Little is known about the molecular basis of colonization resistance and how ...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2007.12.008

    authors: Stecher B,Hardt WD

    更新日期:2008-03-01 00:00:00

  • RIG-I-Like Receptors: One STrEP Forward.

    abstract::RIG-I-like receptors detect cytosolic viral RNA and activate an antiviral innate immune response. A new study employs the one STrEP-purification technique and next generation sequencing to characterize physiological ligands in an infected cell. The view of all three RLRs bound to viral RNAs shows specialization, colla...

    journal_title:Trends in microbiology

    pub_type: 评论,杂志文章

    doi:10.1016/j.tim.2016.05.001

    authors: Lässig C,Hopfner KP

    更新日期:2016-07-01 00:00:00

  • RTX Adhesins are Key Bacterial Surface Megaproteins in the Formation of Biofilms.

    abstract::Gram-negative bacteria produce repeats-in-toxin adhesion proteins (RTX adhesins) to facilitate microbial adhesion. These large, multidomain proteins share a common architecture comprised of four regions. First to emerge from the bacterium, C terminal end leading, is the RTX export sequence that directs the protein thr...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2018.12.003

    authors: Guo S,Vance TDR,Stevens CA,Voets I,Davies PL

    更新日期:2019-05-01 00:00:00

  • Antibodies against Candida: potential therapeutics?

    abstract::For many years, there has been controversy over the role of antibodies in immunity to Candida, but recently specific antibodies to mannoproteins and hsp90 have been shown to be protective against murine candidiasis. Combined with technical advances in antibody engineering, this raises the possibility of harnessing suc...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/0966-842x(96)10056-1

    authors: Matthews R,Burnie J

    更新日期:1996-09-01 00:00:00

  • A Gaseous Milieu: Extending the Boundaries of the Rhizosphere.

    abstract::Plant root activities shape microbial community functioning in the soil, making the rhizosphere the epicenter of soil biogeochemical processes. With this opinion article, we argue to rethink the rhizosphere boundaries: as gases can diffuse several centimeters away from the roots into the soil, the portion of soil infl...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2020.02.016

    authors: de la Porte A,Schmidt R,Yergeau É,Constant P

    更新日期:2020-07-01 00:00:00

  • Viral disruption of the blood-brain barrier.

    abstract::The blood-brain barrier (BBB) provides significant protection against microbial invasion of the brain. However, the BBB is not impenetrable, and mechanisms by which viruses breach it are becoming clearer. In vivo and in vitro model systems are enabling identification of host and viral factors contributing to breakdown...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2012.03.009

    authors: Spindler KR,Hsu TH

    更新日期:2012-06-01 00:00:00

  • Predictive Modeling of Influenza Shows the Promise of Applied Evolutionary Biology.

    abstract::Seasonal influenza is controlled through vaccination campaigns. Evolution of influenza virus antigens means that vaccines must be updated to match novel strains, and vaccine effectiveness depends on the ability of scientists to predict nearly a year in advance which influenza variants will dominate in upcoming seasons...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2017.09.004

    authors: Morris DH,Gostic KM,Pompei S,Bedford T,Łuksza M,Neher RA,Grenfell BT,Lässig M,McCauley JW

    更新日期:2018-02-01 00:00:00

  • Sex-biased Immune Responses Following SARS-CoV-2 Infection.

    abstract::Males are disproportionately affected by severe disease and death from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. In their recent article, Takahashi et al. found sex differences in immune responses to SARS-CoV-2 and the predictors of disease progression. These findings contribute to elucid...

    journal_title:Trends in microbiology

    pub_type: 评论,杂志文章

    doi:10.1016/j.tim.2020.10.002

    authors: Ursin RL,Shapiro JR,Klein SL

    更新日期:2020-12-01 00:00:00

  • Host-plant invasion by Rhizobium: the role of cell-surface components.

    abstract::Rhizobia are soil bacteria that can become endosymbionts, reducing atmospheric nitrogen within nodules formed on the roots of legume plants. During tissue and cell invasion, bacterial cell-surface components adapt the bacterium to survive as an endophyte without eliciting host-defence responses. The structures of many...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/0966-842x(94)90004-3

    authors: Kannenberg EL,Brewin NJ

    更新日期:1994-08-01 00:00:00

  • The MSCRAMM Family of Cell-Wall-Anchored Surface Proteins of Gram-Positive Cocci.

    abstract::The microbial surface components recognizing adhesive matrix molecules (MSCRAMMs) are a family of proteins that are defined by the presence of two adjacent IgG-like folded subdomains. These promote binding to ligands by mechanisms that involve major conformational changes exemplified by the binding to fibrinogen by th...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2019.06.007

    authors: Foster TJ

    更新日期:2019-11-01 00:00:00

  • On the horizon: a blood test for prions.

    abstract::A recent paper by Castilla et al. reported the detection of prions in the blood of scrapie-infected hamsters using a biochemical amplification method that is conceptually analogous to the polymerase chain reaction. This technological advance raises the possibility that prion diseases in humans and livestock could soon...

    journal_title:Trends in microbiology

    pub_type: 杂志文章

    doi:10.1016/j.tim.2006.02.001

    authors: Supattapone S,Geoghegan JC,Rees JR

    更新日期:2006-04-01 00:00:00

  • Where and how do anthrax toxins exit endosomes to intoxicate host cells?

    abstract::The role of Bacillus anthracis virulence factors in its pathogenesis has been subjected to intense investigation with the aim of finding novel preventive and therapeutic protocols. Toxins that are endocytosed and act in the cytosol of host cells have a central role in B. anthracis infection. Understanding of anthrax t...

    journal_title:Trends in microbiology

    pub_type: 杂志文章

    doi:10.1016/j.tim.2007.10.003

    authors: Puhar A,Montecucco C

    更新日期:2007-11-01 00:00:00

  • The worm has turned--microbial virulence modeled in Caenorhabditis elegans.

    abstract::The nematode Caenorhabditis elegans is emerging as a facile and economical model host for the study of evolutionarily conserved mechanisms of microbial pathogenesis and innate immunity. A rapidly growing number of human and animal microbial pathogens have been shown to injure and kill nematodes. In many cases, microbi...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2005.01.003

    authors: Sifri CD,Begun J,Ausubel FM

    更新日期:2005-03-01 00:00:00

  • Procyclins, proteases and proteomics: dissecting trypanosomes in the tsetse fly.

    abstract::The forms of African trypanosomes that live in tsetse fly vectors are coated with lipid-anchored proteins and glycoproteins known collectively as procyclins. Procyclins are expressed during development in the fly in a multiplicity of isoforms yet their functions remain unknown. Recent studies involving a multidiscipli...

    journal_title:Trends in microbiology

    pub_type: 新闻

    doi:10.1016/s0966-842x(01)02073-x

    authors: Pearson TW

    更新日期:2001-07-01 00:00:00

  • Portrait of Candida Species Biofilm Regulatory Network Genes.

    abstract::Most cases of candidiasis have been attributed to Candida albicans, but Candida glabrata, Candida parapsilosis and Candida tropicalis, designated as non-C. albicans Candida (NCAC), have been identified as frequent human pathogens. Moreover, Candida biofilms are an escalating clinical problem associated with significan...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2016.09.004

    authors: Araújo D,Henriques M,Silva S

    更新日期:2017-01-01 00:00:00

  • Type II secretion: a protein secretion system for all seasons.

    abstract::In Gram-negative bacteria, type II secretion (T2S) is one of five protein secretion systems that permit the export of proteins from within the bacterial cell to the extracellular milieu and/or into target host cells. An analysis of numerous sequenced genomes now reveals that T2S genes are common, but by no means unive...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2005.09.005

    authors: Cianciotto NP

    更新日期:2005-12-01 00:00:00

  • HIV-1 Latency Is Maintained by the Estrogen Receptor.

    abstract::Persistence of the latent reservoir remains a challenge to curing HIV infection. Using shRNA screening, new insights into the molecular mechanisms underlying latency regulation indicate that the estrogen receptor is a potent repressor of proviral reactivation and may serve as a promising therapeutic target in combinat...

    journal_title:Trends in microbiology

    pub_type: 评论,杂志文章

    doi:10.1016/j.tim.2018.09.005

    authors: Bick AJ,Hapgood JP

    更新日期:2018-11-01 00:00:00

  • Staphylococcus aureus as an intracellular pathogen: the role of small colony variants.

    abstract::Increasing evidence indicates that Staphylococcus aureus might be a facultative intracellular pathogen. In particular, certain subpopulations, called small colony variants (SCVs), seem to be well adapted to the intracellular milieu. When compared to 'normal' staphylococcal strains, SCVs show increased uptake by host c...

    journal_title:Trends in microbiology

    pub_type: 杂志文章

    doi:10.1016/j.tim.2008.11.004

    authors: Sendi P,Proctor RA

    更新日期:2009-02-01 00:00:00

  • Light helps bacteria make important lifestyle decisions.

    abstract::Until recently, bacterial responses to changes in light environments were regarded as specialized adaptations in a small number of phototrophs. However, the genomes of many photosynthetic and chemotrophic bacteria not known to have photophysiological responses also encode photoreceptor proteins. What new trends in the...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2011.05.002

    authors: Gomelsky M,Hoff WD

    更新日期:2011-09-01 00:00:00

  • Noncoding RNAs: Regulatory Molecules of Host-Microbiome Crosstalk.

    abstract::Recent emerging evidence has revealed that regulatory noncoding RNAs (microRNAs, circular RNAs) modulate host-microbe interactions and they have been proposed as potential biomarkers of the host's response to microbiome-linked pathologies such as cancers, obesity, and neurodegenerative diseases. Interactions between m...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2020.12.003

    authors: Malmuthuge N,Guan LL

    更新日期:2021-01-05 00:00:00

  • Interferon-induced ISG15 pathway: an ongoing virus-host battle.

    abstract::ISG15 is an interferon (IFN)-induced ubiquitin-like protein that is conjugated to target proteins via the sequential action of three enzymes that are also induced by IFN. Unlike ubiquitin, which is highly conserved, the sequence of ISG15 varies between species. ISG15 conjugation inhibits many viruses, and free (unconj...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/j.tim.2013.01.005

    authors: Zhao C,Collins MN,Hsiang TY,Krug RM

    更新日期:2013-04-01 00:00:00

  • Thermoacidophilic proteins for biofuel production.

    abstract::Growing concerns about global climate change and energy dependence have led to an increased effort to reduce carbon emissions. A considerable reduction could be achieved by using biofuels from lignocellulosic biomass instead of fossil fuels. One major bottleneck of biofuel production from lignocellulose is the availab...

    journal_title:Trends in microbiology

    pub_type: 杂志文章

    doi:10.1016/j.tim.2008.06.001

    authors: Hess M

    更新日期:2008-09-01 00:00:00

  • Cell invasion by the vertebrate stages of Plasmodium.

    abstract::Protozoans of the genus Plasmodium are the causative agents of malaria; they have a complex life cycle involving vertebrate and arthropod hosts and have three distinct invasive stages. Although the invasive stages probably invade cells using similar mechanisms, each stage has a different host cell specificity and util...

    journal_title:Trends in microbiology

    pub_type: 杂志文章,评审

    doi:10.1016/s0966-842x(97)84657-4

    authors: Sinnis P,Sim BK

    更新日期:1997-02-01 00:00:00

  • Tracing the Origin of Invasive Fungal Infections.

    abstract::Invasive fungal infections are a major cause of mortality in immunocompromised patients. By using high-resolution sequencing, Zhai et al. provide insight into translocation of Candida strains from the gut mycobiota to the bloodstream of transplanted patients. Microbiota-driven diagnostic methods could rapidly emerge f...

    journal_title:Trends in microbiology

    pub_type: 评论,杂志文章

    doi:10.1016/j.tim.2020.01.007

    authors: Papon N,Bougnoux ME,d'Enfert C

    更新日期:2020-04-01 00:00:00