LECTURE-10_Enzymes

LECTURE-10_Enzymes - Lecture #12 An Introduction to...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture #12 An Introduction to Metabolism: ENZYMES Campbell and Reece (7th edition):  Chapter 8,  pages 150- 159
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
OBJECTIVES 1. Define “enzyme” and discuss how an enzyme  influences a biological reaction. 2. Discuss the Lock and Key theory of enzymatic  specificity. 3. Recall the characteristics of competitive inhibition. 4. Recall the characteristics of non-competitive  inhibition.
Background image of page 2
OBJECTIVES 5. Discuss allosteric regulation of enzymatic activity. 6. Recall the role of positive and negative allosteric  effectors on enzymatic activity. 7. Discuss negative feedback inhibition in the regulation  of metabolic pathways.  8. Recall the term “cooperatively” with respect to the  regulation of enzymatic activity.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
WHAT ARE ENZYMES? Enzymes are protein catalysts of biological reactions. They participate in the reaction and are unchanged at  the end of the reaction. Enzymes have an active site that is specific for a  substrate.
Background image of page 4
Enzymology A     B A + B   C  B + C A + B   C + D Substrate   Product
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Enzymes lower the barrier of activation energy
Background image of page 6
The Lock and Key Theory of Enzymatic  Specificity  Emil Fischer, 1852-1919, 
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The induced fit between an enzyme and its  substrate
Background image of page 8
Example of an enzyme-catalyzed reaction:  Hydrolysis of sucrose
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/31/2009 for the course BIO 202 taught by Professor Dean during the Spring '08 term at SUNY Stony Brook.

Page1 / 26

LECTURE-10_Enzymes - Lecture #12 An Introduction to...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online