science

Holdemanella biformis

Holdemanella biformis 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 Holdemanella biformis rather than just read about it. In short: Holdemanella biformis is a species of Gram-positive, strictly anaerobic bacteria within the family Erysipelotrichaceae. Initially described as Eubacterium biforme in 1935, it was reclassified into the genus Holdemanella in 2014 based on phylogenetic analyses of 16S rRNA gene sequences.

Key takeaways

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

Reference excerpt

Holdemanella biformis is a species of Gram-positive, strictly anaerobic bacteria within the family Erysipelotrichaceae. Initially described as Eubacterium biforme in 1935, it was reclassified into the genus Holdemanella in 2014 based on phylogenetic analyses of 16S rRNA gene sequences.

Morphology and physiology Holdemanella biformis cells are rod-shaped, non-spore-forming, and exhibit obligate anaerobic metabolism. They ferment carbohydrates to produce short-chain fatty acids (SCFAs), including butyrate, which plays a crucial role in colonic health by serving as an energy source for colonocytes.

Ecology This bacterium is a commensal member of the human gut microbiota, predominantly residing in the colon. Its abundance can vary based on diet, age, and health status. Studies have shown that H. biformis is underrepresented in individuals with colorectal adenomas, suggesting a potential protective role against early stages of colorectal cancer.

Clinical and metabolic significance Research indicates that H. biformis may have beneficial effects on host metabolism and inflammation:

Glucose Metabolism: A 2021 study demonstrated that administration of H. biformis to obese mice improved glucose tolerance, restored gluconeogenesis and insulin signaling in the liver, and enhanced GLP-1 levels and signaling pathways. These effects suggest potential therapeutic applications for metabolic disorders such as type 2 diabetes. Anti-inflammatory Properties: H. biformis produces 3-hydroxyoctadecaenoic acid (C18-3OH), a long-chain fatty acid with anti-inflammatory effects. This compound acts as an agonist of peroxisome proliferator-activated receptor gamma (PPARγ), which plays a role in regulating inflammation and energy homeostasis.

See also Gut microbiota Short-chain fatty acid Probiotic

References

External links LPSN entry for Holdemanella biformis NCBI Taxonomy Browser: Holdemanella biformis DSMZ entry for Holdemanella biformis

Worked examples

Example 1 — a first encounter with Holdemanella biformis

Start with the simplest possible case. Write down what Holdemanella biformis 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 Holdemanella biformis 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 Holdemanella biformis 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 Holdemanella biformis

In research: Holdemanella biformis 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 Holdemanella biformis 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: Holdemanella biformis is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bacteria described in 2014, Erysipelotrichales, Gram-positive bacteria, so understanding it makes those chapters shorter.
In everyday life: Look for Holdemanella biformis 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 Holdemanella biformis in 20 minutes

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

Frequently asked questions

What is Holdemanella biformis in simple terms?

Why does Holdemanella biformis 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 Holdemanella biformis?

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 Holdemanella biformis.