Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Protein Complexes with Interchangeable Parts

Protein Complexes with Interchangeable Parts

Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...

Protein Complex Assembly

Protein Complex Assembly

Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...

Protein and Protein Structures

Protein and Protein Structures

Protein and Protein Structure

Protein and Protein Structure

Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...

Protein-Protein Interfaces

Protein-Protein Interfaces

Proteins: Dietary Sources and Requirements

Proteins: Dietary Sources and Requirements

Consuming animal-based products offers high-quality proteins that contain optimal levels and combinations of essential amino acids, crucial for tissue repair and growth. Foods like eggs, milk, fish, and most meats are a source of complete proteins. Legumes and cereals are abundant in proteins; however, they typically lack a full range of essential amino acids. As a result, they are considered incomplete protein sources. Some plant sources like soybeans, quinoa, and amaranth do contain complete...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Lepidium Meyenii Walp. (Maca) and Blood Biomarkers of Muscle Damage and Post-Exertion Protein Degradation: A Systematic Review and Meta-Analysis of Preclinical Studies.

Nutrients·2026

Same author

Brachytherapy reirradiation for local recurrences of gynaecological cancers: two clinical cases, literature review and OAR constraints.

Ecancermedicalscience·2026

Same author

Machine and deep learning models for ligament injury recognition: a systematic review and meta-analysis of imaging and novel diagnostic techniques.

EFORT open reviews·2026

Same author

Data-driven identification of metabolic and cardiovascular biomarkers in high-altitude workers: a machine learning approach.

Frontiers in public health·2025

Same author

Mining the risk: early cardiovascular detection in workers.

Frontiers in medicine·2025

Same author

Impact of Exercise Dose-Response on Maternal Mental Health and Perinatal Depression Prevention: A Systematic Review and Meta-Analysis.

International journal of public health·2025

Search research articles

Related Experiment Video

Updated: Jun 27, 2025

Composition and Properties of Aquafaba: Water Recovered from Commercially Canned Chickpeas

Composition and Properties of Aquafaba: Water Recovered from Commercially Canned Chickpeas

Published on: February 10, 2018

Chilean Market Protein Shakes Composition.

Carlos Jorquera¹, Guillermo Droppelmann^2,3, Paula Pridal¹

¹Facultad de Ciencias, Escuela de Nutrición y Dietética, Universidad Mayor, Santiago 8580745, Chile.

|April 27, 2024

Summary

This study analyzed Chilean protein supplements, finding median protein content of 75g per 100g and high levels of L-Glutamine and L-Leucine in prevalent animal-derived products.

Keywords:

BCAA amino acids ergogenic market sport diet whey protein

More Related Videos

Designing Silk-silk Protein Alloy Materials for Biomedical Applications

Designing Silk-silk Protein Alloy Materials for Biomedical Applications

Published on: August 13, 2014

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults

Published on: April 22, 2022

Related Experiment Videos

Last Updated: Jun 27, 2025

Composition and Properties of Aquafaba: Water Recovered from Commercially Canned Chickpeas

Composition and Properties of Aquafaba: Water Recovered from Commercially Canned Chickpeas

Published on: February 10, 2018

Designing Silk-silk Protein Alloy Materials for Biomedical Applications

Designing Silk-silk Protein Alloy Materials for Biomedical Applications

Published on: August 13, 2014

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults

Published on: April 22, 2022

Area of Science:

Nutritional Science
Sports Nutrition
Biochemistry

Background:

Optimal nutritional planning requires understanding protein supplement composition.
Data on macronutrients and amino acid profiles of Chilean market protein supplements is lacking.

Purpose of the Study:

To identify and analyze the macronutrient and amino acid content of protein supplements available in Chile.
To characterize the distribution of amino acids in popular protein products.

Main Methods:

A descriptive cross-sectional study of 80 protein shakes from the Chilean market.
Extraction of macronutrient and amino acid data from product labels (per portion and per 100g).
Exploration of cluster analysis models and graphical representations for data interpretation.

Main Results:

Median protein dosage was 32g per serving, with 75g per 100g product.
L-Glutamine (17,336 mg) and L-Leucine were prevalent, while L-Tryptophan was lowest.
A high prevalence of animal-derived protein supplements was observed.

Conclusions:

Chilean protein supplements show significant protein content, particularly animal-derived options.
Specific amino acids like L-Glutamine and L-Leucine are abundant.
This data aids informed nutritional choices for athletes and consumers.