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HomeHomework HelpbiologyProtein Functions

Protein Functions

Protein functions refer to the diverse roles that proteins play in biological systems, including catalyzing biochemical reactions as enzymes, providing structural support, facilitating communication between cells, and transporting molecules across membranes. These functions are determined by the protein's unique three-dimensional structure, which is shaped by its amino acid sequence.

intermediate
2 hours
Biology
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Overview

Proteins are vital macromolecules that play crucial roles in biological systems. They are composed of amino acids and can function as enzymes, structural components, transporters, and regulators. The specific function of a protein is determined by its unique structure, which is formed through variou...

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Key Terms

Amino Acid
The building blocks of proteins, consisting of a central carbon atom, an amino group, a carboxyl group, and a variable side chain.

Example: There are 20 different amino acids that combine to form proteins.

Enzyme
A type of protein that acts as a catalyst to speed up chemical reactions in the body.

Example: Amylase is an enzyme that helps digest carbohydrates.

Peptide Bond
The bond formed between two amino acids during protein synthesis.

Example: Peptide bonds link amino acids together to form a protein chain.

Transcription
The process of copying a segment of DNA into RNA.

Example: During transcription, the gene for insulin is copied into mRNA.

Translation
The process by which ribosomes synthesize proteins using mRNA as a template.

Example: Translation occurs in the ribosome, where tRNA brings amino acids to form a protein.

Structural Protein
Proteins that provide support and shape to cells and tissues.

Example: Collagen is a structural protein found in skin and connective tissues.

Related Topics

Enzyme Kinetics
Study of the rates of enzyme-catalyzed reactions and factors affecting them.
intermediate
Genetic Code
Understanding how sequences of nucleotides in DNA correspond to amino acids in proteins.
intermediate
Cell Membrane Transport
Exploration of how substances move across cell membranes, including protein functions.
intermediate

Key Concepts

Enzymatic activityStructural supportTransportRegulation