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Related Concept Videos

Drug Biotransformation: Overview01:16

Drug Biotransformation: Overview

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Pharmaceutical substances known as xenobiotics are predominantly lipophilic and nonionized. This enables them to permeate lipid bilayers, such as cell membranes, and interact with intracellular target receptors. Lipophilic drugs have an advantage in crossing biological barriers and reaching their intended sites of action. However, lipophilic drugs often have a restricted capacity for renal expulsion or elimination from the body. When these drugs enter the kidneys and undergo glomerular...
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Drug Biotransformation: Overview01:28

Drug Biotransformation: Overview

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Biotransformation, also known as drug metabolism, is a vital physiological process that chemically alters drugs, facilitating their elimination from the body and terminating their action. This process involves two main phases: phase I and phase II reactions. Phase I reactions, including oxidation, reduction, and hydrolysis, introduce or unmask polar functional groups on the drug molecule, thereby increasing its water solubility. By enhancing water solubility, the drug becomes more hydrophilic...
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Factors Affecting Drug Biotransformation: Biological01:19

Factors Affecting Drug Biotransformation: Biological

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Biological factors significantly impact drug metabolism, influencing drug clearance, efficacy, and potential toxicity.
Species differences: Variations in enzyme systems across species can cause disparities in drug metabolism. For instance, humans may metabolize certain drugs faster than rodents, altering therapeutic effects.
Strain differences: Genetic variations within a species can result in differing enzyme activity, impacting drug response and toxicity. For example, some mouse strains may...
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Factors Affecting Drug Biotransformation: Physicochemical and Chemical Properties of Drugs01:21

Factors Affecting Drug Biotransformation: Physicochemical and Chemical Properties of Drugs

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A drug's physicochemical properties fundamentally influence its metabolism. For instance, a drug's molecular size and shape critically determine its interaction with enzymes and transporters — larger drugs may face difficulty reaching enzyme active sites, altering their metabolic pathways. The pKa of a drug, which establishes its ionization state, can impact its solubility and absorption, thereby influencing metabolism.
The drug's acidity or basicity is essential in...
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Second Order systems II01:18

Second Order systems II

414
In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
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First Order Systems01:21

First Order Systems

438
First-order systems, such as RC circuits, are foundational in understanding dynamic systems due to their straightforward input-output relationship. Analyzing their responses to different input functions under zero initial conditions reveals significant insights into system behavior.
When a first-order system is subjected to a unit-step input, its response is characterized by its transfer function. By applying the Laplace transform of the unit-step input to the transfer function, expanding the...
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Updated: Feb 15, 2026

Rapid Characterization of Genetic Parts with Cell-Free Systems
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Cell-free systems for biotransformation.

Huzaifa Ibrahim1, Nimra Arshad1, Hunaiza Fatima2

  • 1Shifa College of Pharmaceutical Sciences, Shifa Tameer-e-Millat University, Islamabad, Pakistan.

Progress in Molecular Biology and Translational Science
|February 13, 2026
PubMed
Summary
This summary is machine-generated.

Cell-free biotransformation advances biotechnology, enabling efficient synthesis of valuable chemicals and therapeutics. Modern cell-free protein synthesis (CFPS) optimizes processes for improved yield and eco-friendly manufacturing.

Keywords:
BiologicalsBiotransformationCell-free systemsMetabolomicsProtein synthesis

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Area of Science:

  • Biotechnology
  • Synthetic Biology
  • Biochemistry

Background:

  • Cell-free systems have evolved from conventional methods to modern cell-free protein synthesis (CFPS).
  • This evolution allows for enhanced optimization by biomedical engineers and researchers.
  • Biotransformation is crucial for synthesizing therapeutic agents, biofuels, and chemicals.

Purpose of the Study:

  • To present the transformation from conventional cell-free systems to modern CFPS.
  • To explore key biotransformation reactions and pathway optimization strategies.
  • To highlight practical applications and future directions of cell-free systems.

Main Methods:

  • Review of biotransformation processes, including enzymatic catalysis, redox transformation, and hydrolytic processes.
  • Focus on pathway and process optimization for modular design.
  • Integration of synthetic biology platforms with machine learning and high-throughput screening.

Main Results:

  • Demonstrated practical benefits in biofuel generation, therapeutic protein synthesis, and eco-friendly manufacturing.
  • Achieved better yield, adaptability, and reduction of unwanted substances.
  • Highlighted the effectiveness of cell-free systems in biotransformation.

Conclusions:

  • Cell-free systems are fundamental for future production and advancements in biotransformation.
  • Breakthroughs in eco-friendly chemistry, artificial cells, and synthetic biologicals are driven by cell-free technology.
  • Optimized cell-free systems offer efficient and adaptable solutions for industrial applications.