Purchase Solution

Definition of the isoelectric point of a protein

Not what you're looking for?

Ask Custom Question

What is the definition of the "isoelectric point" (pI) of a protein?

Purchase this Solution

Solution Summary

The solution contains an "official" definition of pI (isoelectric point), as well as an explanation of a more practical definition.

Solution Preview

The isoelectric point (pI) of a protein is the pH at which a zwitterionic molecule does not migrate in an electric field, because its NET CHARGE IS ZERO.

That's a definition that is easy to find but somewhat more difficult to understand. ...

Purchase this Solution

Free BrainMass Quizzes
Basic Immunology Quiz

Intro to immuno quiz. Covers the basics of immunology and recognition of foreign substances by the body.

Basic Concepts in Neuroscience

This quiz provides a review of the basic concepts in neuroscience.

Light and Sight Vocabulary

This quiz introduces basic definitions of vocabulary related to light and how human eyes. This information is important for an understanding of sight.

Identifying Variables in Science Experiments, Part 2

Using sample experiments, test yourself to see if you can identify independent, dependent, and controlled variables. Identifying variables is key in understanding and developing experiments. The questions are biology related, but this can be applied to any area of science.

Vision and Oculomotor Control

This quiz will test the student's knowledge of the neural underpinnings of the visual system and its central pathways.