biology

Tellurium ion resistance

Tellurium ion resistance is a biology 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 Tellurium ion resistance rather than just read about it. In short: The Tellurium Ion Resistance (TerC) Family (TC# 2.A.109) is part of the Lysine Exporter (LysE) Superfamily. A representative list of proteins belonging to the TerC family can be found in the Transporter Classification Database.

Key takeaways

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

Reference excerpt

The Tellurium Ion Resistance (TerC) Family (TC# 2.A.109) is part of the Lysine Exporter (LysE) Superfamily. A representative list of proteins belonging to the TerC family can be found in the Transporter Classification Database.

TerC The TerC family (Pfam 03741) includes the E. coli TerC protein (TC# 2.A.109.1.1) which has been implicated in tellurium resistance. It is hypothesized to catalyze efflux of tellurium ions. TerC is encoded by plasmid pTE53 from a clinical isolate of E. coli. It has 346 amino acyl residues (aas) and 9 putative transmembrane segments (TMSs) with a large hydrophilic loop between TMSs 5 and 6. A homologue in Arabidopsis thaliana (TC# 9.A.30.2.1) may function in prothylakoid membrane biogenises during early chloroplast development. It has 384 aas and 7-8 putative TMSs. In E. coli, TerC forms a membrane complex with TerB as well as DctA, PspA, HslU, and RplK. The TerB/TerC complex may link different functional modules with biochemical activities of C4-dicarboxylate transport, inner membrane stress response (phage shock protein regulatory complex), ATPase/chaperone activity, and proteosynthesis. It may be part of a metal sensing stress response system. The co-presence of TerC and TerE but not TerF correlates with tellurite resistance when several hundred bacterial strains were assayed.

Function The reaction proposed to be catalyzed by TerC is: tellurium ions (in) → tellurium ions (out).

See also Tellurium Isotopes of tellurium Efflux (microbiology)

Further reading Taylor, D. E. (1999). "Bacterial tellurite resistance". Trends in Microbiology. 7 (3): 111–115. doi:10.1016/s0966-842x(99)01454-7. PMID 10203839. Kazanov, M.D.; Vitreschak, A.G.; Gelfand, M.S. (2007). "Abundance and functional diversity of riboswitches in microbial communities". BMC Genomics. 8: 347. doi:10.1186/1471-2164-8-347. PMC 2211319. PMID 17908319. Kwon, K.C.; Cho, M.H. (2008). "Deletion of the chloroplast-localized AtTerC gene product in Arabidopsis thaliana leads to loss of the thylakoid membrane and to seedling lethality". Plant J. 55 (3): 428–442. doi:10.1111/j.1365-313X.2008.03523.x. PMID 18429937. Meyer, M.M.; Hammond, M.C.; Salinas, Y.; Roth, A.; Sudarsan, N.; Breaker, R.R. (2011). "Challenges of ligand identification for riboswitch candidates". RNA Biol. 8 (1): 5–10. doi:10.4161/rna.8.1.13865. PMC 3142362. PMID 21317561.

References

Worked examples

Example 1 — a first encounter with Tellurium ion resistance

Start with the simplest possible case. Write down what Tellurium ion resistance claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Tellurium ion resistance 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 Tellurium ion resistance 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 Tellurium ion resistance

In research: Tellurium ion resistance appears in biology 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 Tellurium ion resistance 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: Tellurium ion resistance is common in secondary-school and first-year university syllabi. It links to neighbouring topics Integral membrane proteins, Membrane protein stubs, Membrane proteins, so understanding it makes those chapters shorter.
In everyday life: Look for Tellurium ion resistance 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 Tellurium ion resistance in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tellurium ion resistance 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 Tellurium ion resistance out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tellurium ion resistance in simple terms?

Why does Tellurium ion resistance matter?

Because it connects several biology 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 Tellurium ion resistance?

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 Tellurium ion resistance.