lecture0222audio - pH of digestive juice is normally acid...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Enzymes – pH pH is critical since: pH determines [H + ] Some R groups can become  charged/uncharged through  addition/removal of H +  ions.  Charge on R-groups can determine  secondary (to a small extent) and tertiary  enzyme structure AND Proton exchange and interaction of  charged groups is sometimes an  intermediate step in catalysis.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Enzymes - pH Enzymes are tailored to function  optimally at an appropriate pH  e,g, digestive enzymes:  pepsin - stomach - most active at pH3 trypsin - intestine - most active at pH8.
Background image of page 2
Background image of page 3

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

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: pH of digestive juice is normally acid in stomach, alkaline in intestines Enzymes temperature Temperature is also critical since: As temperature increases, more substrate molecules gain sufficient energy from thermal sources to overcome E a - so rate at first increases with temperature. BUT at high temperatures, enzyme denatures So there is also an optimal; temperature for each enzyme tailored to the enzymes/organisms environment. Figure 3.17...
View Full Document

Page1 / 4

lecture0222audio - pH of digestive juice is normally acid...

This preview shows document pages 1 - 4. Sign up to view the full document.

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