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SULT1A1

SULT1A1 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 SULT1A1 rather than just read about it. In short: Sulfotransferase 1A1 is an enzyme that in humans is encoded by the SULT1A1 gene. Sulfotransferase enzymes catalyze the sulfate conjugation of many hormones, neurotransmitters, drugs, and xenobiotic compounds.

SULT1A1 — main illustration
SULT1A1 — illustration

Key takeaways

  • SULT1A1 belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect SULT1A1 to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of SULT1A1 from memory before moving on to harder problems.

Reference excerpt

Sulfotransferase 1A1 is an enzyme that in humans is encoded by the SULT1A1 gene. Sulfotransferase enzymes catalyze the sulfate conjugation of many hormones, neurotransmitters, drugs, and xenobiotic compounds. These cytosolic enzymes are different in their tissue distributions and substrate specificities. The gene structure (number and length of exons) is similar among family members. This gene encodes one of two phenol sulfotransferases with thermostable enzyme activity. Multiple alternatively spliced variants that encode two isoforms have been identified for this gene. The SULT1A1 enzyme is expressed in outer roots sheath of hair follicles. Minoxidil, the only US FDA approved topical drug for re-growing hair in male and female pattern hair loss (androgenetic alopecia patients) is a pro-drug. Minoxidil is converted to its active form (minoxidil sulfate) by the hair sulfotransferase enzyme (SULT1A1). A large variability in sulfotransferase enzyme expression in hair is observed among people. Low sulfotransferase activity was found to be predictive to lack of response to topical minoxidil for hair re-growth. In a clinical study, a novel formula using a hypoxia mimetic pathway demonstrated to increase SULT1A1 activity in human subjects in-vivo.

See also Steroid sulfotransferase Steroidogenic enzyme

References

Further reading

Illustrations

SULT1A1 illustration
SULT1A1 illustration
SULT1A1 illustration
SULT1A1 illustration
SULT1A1 illustration

Worked examples

Example 1 — a first encounter with SULT1A1

Start with the simplest possible case. Write down what SULT1A1 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 SULT1A1 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 SULT1A1 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 SULT1A1

In research
SULT1A1 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 SULT1A1 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
SULT1A1 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 16, Human chromosome 16 gene stubs, so understanding it makes those chapters shorter.
In everyday life
Look for SULT1A1 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 SULT1A1 in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what SULT1A1 means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain SULT1A1 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SULT1A1 in simple terms?

Sulfotransferase 1A1 is an enzyme that in humans is encoded by the SULT1A1 gene. Sulfotransferase enzymes catalyze the sulfate conjugation of many hormones, neurotransmitters, drugs, and xenobiotic compounds.

Why does SULT1A1 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 SULT1A1?

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 SULT1A1.

Tags

  • Genes on human chromosome 16
  • Human chromosome 16 gene stubs

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