Скачать или смотреть Enzymes | part 1

This lecture delivers a comprehensive, exam-oriented explanation of enzymes tailored for first-year undergraduate medical students. It systematically builds from fundamental biochemical principles to clinically relevant applications, following the exact structure required for medical curricula and assessments.

The lecture covers:

Definition, nature, and characteristics of enzymes, including ribozymes

Enzyme structure (apoenzyme, holoenzyme, prosthetic groups) and multienzyme complexes

Cofactors and coenzymes with vitamin and metal ion correlations

Enzyme nomenclature and EC classification

Detailed discussion of enzyme specificity

Mechanisms of enzyme action:
activation energy theory, enzyme–substrate complex, lock-and-key and induced-fit models

Factors affecting enzyme activity (substrate, enzyme, pH, temperature, inhibitors, time)

Enzyme kinetics: Km, Vmax, Michaelis–Menten concept

Enzyme inhibition: competitive, non-competitive, irreversible (with classic biochemical and clinical examples)

Allosteric enzymes, sigmoid kinetics, and feedback inhibition

Enzyme regulation by covalent and non-covalent modification

Clinical enzymology:
isoenzymes (LDH, CK, ALP), plasma enzymes, and enzyme markers in myocardial infarction

High-yield MCQs and revision-focused summaries

The content is presented in a clear, structured, high-yield format, emphasizing conceptual understanding, kinetic interpretation, and direct clinical relevance—suitable for exam preparation, revision, and foundation building for pathology and internal medicine.