Give four reasons why salivary amylase cannot act on proteins.

Expert Answers

An illustration of the letter 'A' in a speech bubbles

The enzyme known as amylase acts on a specific substrate which is starch. The chemical reaction of starch begins in the mouth as it begins to hydrolyze into maltose, a sugar. Amylase, as all other enzymes, are very specific. One reason is that their 3-dimensional shape has a particular active site that binds to a substrate based on the molecular shape, much like a key fits to a particular lock. Other factors that affect enzyme specificity are charge as well as the hydrophilic and hydrophobic characteristics of both enzyme and substrate.

Approved by eNotes Editorial Team
Soaring plane image

We’ll help your grades soar

Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now.

  • 30,000+ book summaries
  • 20% study tools discount
  • Ad-free content
  • PDF downloads
  • 300,000+ answers
  • 5-star customer support
Start your 48-Hour Free Trial