science

Rubrobacter xylanophilus

Rubrobacter xylanophilus is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Rubrobacter xylanophilus rather than just read about it. In short: Rubrobacter xylanophilus is a thermophilic species of bacteria. It is slightly halotolerant, short rod- and coccus-shaped and gram-positive, with type strain PRD-1T.

Key takeaways

Rubrobacter xylanophilus belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Rubrobacter xylanophilus to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Rubrobacter xylanophilus from memory before moving on to harder problems.

Reference excerpt

Rubrobacter xylanophilus is a thermophilic species of bacteria. It is slightly halotolerant, short rod- and coccus-shaped and gram-positive, with type strain PRD-1T. It is the only known true radiation resistant thermophile. It can degrade xylan and hemicellulose. The first strain of the genus Rubrobacter was isolated from gamma-irradiated hot spring water samples by Yoshinaka. This organism was found to be extremely gamma-radiation resistant, with a higher shoulder dose than the canonical radiation resistant species of the genus Deinococcus. The organism stained Gram-positive and was slightly thermophilic with an optimum growth temperature of about 60 °C..Genome sequencing of Rubrobacter xylanophilus has revealed numerous genes involved in DNA repair and oxidative stress protection, which are thought to contribute to its extreme resistance to radiation. The species produces a thermostable D-amino acid oxidase that remains active at 65 °C.

References

Further reading Empadinhas, Nuno; Mendes, Vítor; Simões, Catarina; Santos, Maria S.; Mingote, Ana; Lamosa, Pedro; Santos, Helena; Costa, Milton S. da (2007). "Organic solutes in Rubrobacter xylanophilus: the first example of di-myo-inositol-phosphate in a thermophile" (PDF). Extremophiles. 11 (5): 667–673. doi:10.1007/s00792-007-0084-z. hdl:10316/7827. ISSN 1431-0651. PMID 17510735. S2CID 19493249. Empadinhas, Nuno; Pereira, Pedro José Barbosa; Albuquerque, Luciana; Costa, Joana; Sá-Moura, Bebiana; Marques, Alexandra T.; Macedo-Ribeiro, Sandra; da Costa, Milton S. (2011). "Functional and structural characterization of a novel mannosyl-3-phosphoglycerate synthase from Rubrobacter xylanophilus reveals its dual substrate specificity". Molecular Microbiology. 79 (1): 76–93. doi:10.1111/j.1365-2958.2010.07432.x. ISSN 0950-382X. PMID 21166895. Nobre, A.; Alarico, S.; Fernandes, C.; Empadinhas, N.; da Costa, M. S. (2008). "A Unique Combination of Genetic Systems for the Synthesis of Trehalose in Rubrobacter xylanophilus: Properties of a Rare Actinobacterial TreT". Journal of Bacteriology. 190 (24): 7939–7946. doi:10.1128/JB.01055-08. ISSN 0021-9193. PMC 2593226. PMID 18835983. A Trincone (30 September 2013). Marine Enzymes for Biocatalysis: Sources, Biocatalytic Characteristics and Bioprocesses of Marine Enzymes. Elsevier Science. pp. 479–. ISBN 978-1-908818-35-5. Ferreira, A. C.; Nobre, M. F.; Moore, E.; Rainey, F. A.; Battista, J. R.; da Costa, M.S. (1999). "Characterization and radiation resistance of new isolates of Rubrobacter radiotolerans and Rubrobacter xylanophilus". Extremophiles. 3 (4): 235–238. doi:10.1007/s007920050121. ISSN 1431-0651. PMID 10591012. S2CID 539861.

External links Type strain of Rubrobacter xylanophilus at BacDive - the Bacterial Diversity Metadatabase

Worked examples

Example 1 — a first encounter with Rubrobacter xylanophilus

Start with the simplest possible case. Write down what Rubrobacter xylanophilus claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Rubrobacter xylanophilus before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Rubrobacter xylanophilus ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Rubrobacter xylanophilus

In research: Rubrobacter xylanophilus appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Rubrobacter xylanophilus in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Rubrobacter xylanophilus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Actinomycetota stubs, Bacteria described in 1996, Rubrobacterales, so understanding it makes those chapters shorter.
In everyday life: Look for Rubrobacter xylanophilus outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Rubrobacter xylanophilus in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Rubrobacter xylanophilus means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Rubrobacter xylanophilus out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Rubrobacter xylanophilus in simple terms?

Rubrobacter xylanophilus is a thermophilic species of bacteria. It is slightly halotolerant, short rod- and coccus-shaped and gram-positive, with type strain PRD-1T.

Why does Rubrobacter xylanophilus matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Rubrobacter xylanophilus?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Rubrobacter xylanophilus.