Microbe

Michele Swanson, Gemma Reguera, Moselio Schaechter, ... [et. al.]

2nd ed.

Washington, DC : ASM Press, cop. 2016

p. 409

The simple view of Archaea as restricted to two phyla was challenged when the first environmental DNA sequencing studies began to identify sequences corresponding to new, candidate archaeal phyla called the Thaumarchaeota, Aigarchaeota, and Korarchaeota, collectively designated, along with the Crenarchaeota, as the TACK superphylum (Fig. 14.3 and 14.8).

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p. 715

To aggregate on chitin-containing surfaces, vibrios rely on a filamentous appendage, the toxin-coregulated pilus, or TCP (Fig. 26.2).

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p. 216

Binding to ter sites is the protein Tus (terminator utilization substance), which halts the replisome's progress by inhibiting its helicase.

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p. 277

All transposons carry terminal inverted repeats that serve as recognition sites for the transposase enzyme.

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p. 409

The simple view of Archaea as restricted to two phyla was challenged when the first environmental DNA sequencing studies began to identify sequences corresponding to new, candidate archaeal phyla called the Thaumarchaeota, Aigarchaeota, and Korarchaeota, collectively designated, along with the Crenarchaeota, as the TACK superphylum (Fig. 14.3 and 14.8).

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p. 278

Then a reaction mix of template DNA, primers, deoxynucleotides, magnesium, and a heat-tolerant DNA polymerase is placed in a "thermo cycler" machine that alternates the mix between two temperatures.

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p. 372

Thermoactinomyces. Thermophilic aerobes; closely related to Bacillus

El context és en una taula.

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p. 567

Autotrophic denitrifiers include, for example, Thiobacillus denitrificans, an obligate chemolithoautotrophic bacterium that can denitrigy using some seemingly unpalatable electron donors such as sulfur compounds, ferrous iron (Fe[II]) and tetravalent uranium (U[IV]).

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p. 14

Hence, mutational changes in rRNAs, as used to measure relatedness in the iconic three-domain tree, provide only partial glimpse of the evolutionary past of all organisms.

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p. 698

FIGURE 25.2 Time-lapse movie of a permissive cell line infected with HSV-1, a standard clinical diagnostic test.

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p. 732

FIGURE 27.1 [...] (B) Tissue necrosis characteristic of Y. Pestis bloodstream infection.

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p. 481

In the case of plant viruses, plaque counts can also be obtained by spreading viruses on an abraded surface of a leaf os a susceptible host. The number of lesions that develop is proportional to the number of virus particles in the preparation. In the early days of virology, this procedure was used with the tobacco mosaic virus.

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p. 176

Pseudomonas aeruginosa and Caulobacter crescentus each encode dozens of TonB-dependent transporters, and many species rely on them to transport siderophores, proteins that avidly chelate extracellular iron.

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p. 721-722

Some toxins are sufficient to convert a benign commensal microbe of humans into a dreaded pathogen, as illustrated b the emergence of toxigenic strains of the respiratory bacterium Corynebacterium diphtheriae.

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p. 715

To aggregate on chitin-containing surfaces, vibrios rely on a filamentous appendage, the toxin-coregulated pilus, or TCP (Fig. 26.2).

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p. 630

In toxin-mediated diseases, including cholera and tetanus, the damage is caused directly by the agent.

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p. 292

The conjugative plasmids of the antibiotic-producing bacteria Streptomyces encode a single protein (TraB) that takes care of the transfer all by itself.

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p. 540

Genomic and metagenomic data became particularly useful in trait-based biogeography studies.

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p. 539

Explain how trait-based microbial biogeography can predict how a microbial community will respond to changes in the environment.

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p. 318

3, 4, and 5. Transcriptional repression, activation, and enhancement: Initiation of transcription can also be activated, repressed, or enhanced (steps 3, 4, and 5 in Fig. 11.7) in regulatory events involving sequences called DNA control regions.

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p. 319

A more prevalent mode of transcriptional regulation by sRNAs is, however, regulated transcription termination, whereby the sRNA base pairs with a complementary region in the nascent mRNA and acquires a conformation such that a termination loop forms that stops RNAP elongation.

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p. 718

To appreciate how quickly and far V. cholerae can spread through natural pathways, examine the transmission map deduced for the seventh pandemic (Fig. 26.7).

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p. 338

FIGURE 12.2 Generalized scheme of a two-component stress response. In this two-component system, the stressor triggers the autophosphorylation of a histidine residue in a sensory kinase, which then phosphorylates the aspartic acid of a response regulator.

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