E

Enzyme

v = V_max[S] / (K_m + [S])
Quick Reference
Formula / Notationv = V_max[S] / (K_m + [S])
Also Known AsBiological catalyst, biocatalyst, protein catalyst, enzyme catalyst

What is Enzyme?

A biological catalyst, typically a protein, that accelerates chemical reactions in living organisms without being consumed. Enzymes are highly specific, each catalyzing a particular reaction. They lower activation energy and work under mild conditions of temperature and pH.

Formula & Notation

v = V_max[S] / (K_m + [S])

Other Names / Synonyms: Biological catalyst, biocatalyst, protein catalyst, enzyme catalyst

Properties & Characteristics

An enzyme is a biological catalyst — typically a protein — that accelerates biochemical reactions by lowering the activation energy without being consumed. Enzymes are highly specific to their substrates (lock-and-key or induced fit model), work under mild conditions (37°C, near-neutral pH), and are regulated by feedback inhibition, allosteric modulation, and covalent modification. Coenzymes and cofactors (metal ions, vitamins) are often required for activity.

Uses & Applications

Enzymes are used industrially in food processing (amylases in bread baking, proteases in cheese making, lipases in dairy), biotechnology (restriction enzymes in DNA cloning, PCR polymerases), pharmaceuticals (enzyme replacement therapy, drug metabolism), biofuel production, and diagnostics (enzyme-linked assays, glucose oxidase in blood glucose meters).

Safety Information

Enzyme preparations can cause occupational asthma and sensitisation (detergent proteases, Bacillus-derived enzymes). Industrial enzyme dusts must be controlled. Some enzymes (thrombin, trypsin) are hazardous if inadvertently introduced into the bloodstream. Recombinant enzymes require biosafety level assessment.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Enzyme
Formula v = V_max[S] / (K_m + [S])
Synonyms Biological catalyst, biocatalyst, protein catalyst, enzyme catalyst

Frequently Asked Questions

A biological catalyst, typically a protein, that accelerates chemical reactions in living organisms without being consumed. Enzymes are highly specific, each catalyzing a particular reaction. They lower activation energy and work under mild conditions of temperature and pH.

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