The structure of a machine's parts in relation to one another and the proper functioning of the machine itself, applies not just to the machines is, but also to the ones at work inside our bodies. These molecular machines, called...

Some proteins are soluble in aqueous solutions and some are not. Insoluble proteins can be a problem because the proteins can form large aggregates in solution which are difficult to purify, crystallize, and use in experiments. Compare...

Study proteins and amino acids in the science of biology including how they are made using DNA, transcription, and translation and different types of proteins on this site.

[Free Registration/Login may be required to access all resource tools.] Discusses the structure and role of proteins.

Read the passage "Homocystinuria and Its Associate Treatments," and complete the related five-question quiz.

This hands-on activity is an assessment of the students understanding of peptide and disulfide bonds formed during protein synthesis, and the structure of an amino acid (R-group plus the common structure that all amino acids share)....

If the amine and carboxylic acid functional groups in amino acids join together to form amide bonds, a chain of amino acid units, called a peptide, is formed. A simple tetrapeptide structure is shown in the following diagram. By...

A collection of video lectures from a chemical structure and reactivity course taught at the University of California, Berkeley. The course teaches conjunction, aromatic theory, carbonyl compounds, carbohydrates, amines, carboxylic acid....

Build proteins from amino acid components. View the components of a protein (elements, amino acids) in different colors and zoom into several amino acids to understand how they link together to make a larger structure.

This lab illustrates how the order of nucleotides in DNA determines the order of amino acids in proteins. Relates DNA function to that of RNAand provides an exercise to demonstrate how mutations may occur. Includes a lesson plan and...

For this activity, students create a bracelet of beads using DNA code. Each letter represents an amino acid and is three beads. The authors suggest that even younger students would enjoy this activity, although older students will...

Students will learn how the body digests proteins, and will explain how protein can be used for energy.

[Free Registration/Login may be required to access all resource tools.] The DNA sequence contains the instructions to place units called amino acids into a specific order. When these amino acid are assembled in that specific order,...

Read this passage and study the graphics to complete a five-question quiz pertaining to dietary supplements for building up muscles.

This module introduces students to the problem of Protein Folding, its importance, and current computational methods used to attack its complexity.

[Free Registration/Login may be required to access all resource tools.] Covers the structure and function of proteins.

[Free Registration/Login may be required to access all resource tools.] The structure and function of proteins.

Learn how the human body builds proteins.

Learn about the structure and function of RNA in the body.

[Free Registration/Login may be required to access all resource tools.] Students will learn about the structures and function of proteins and how we get protein in our diet.

Online biology textbook discussing the chemical nature of water, and the importance of its molecular structure to life. Also discusses at length the organic molecules nucleic acids, proteins, lipids, and carbohydrates.

[Free Registration/Login may be required to access all resource tools.] This module states and explains the central dogma of molecular biology which was conceived by Francis Crick.

This information can be used for exam review or as an introduction. It presents a good overview of the topics with charts, graphs, links, and a quiz.

Here you can find some great information about proteins. Learn about a protein's primary structure, secondary structure, tertiary structure, and quaternary structure.