× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
g
3
3
2
J
2
p
2
m
2
h
2
s
2
r
2
d
2
l
2
a
2
Home Q & A Board Biology-Related Homework Help Biochemistry
New Topic  
firefighter61 firefighter61
wrote...
Posts: 65
Rep: 3 0
11 years ago
They both are enzymes that catalyze the same reaction. What does protein structure have to do with this?
Read 664 times
3 Replies

Related Topics

Replies
wrote...
#1
11 years ago
I would guess it's some sort of homologous development, maybe two different enzymes that do the same thing?  Sounds like a tough college level question.  Sorry I can't help more.
wrote...
#2
11 years ago
OK, heat-resistant invertase is likely to have a higher optimal temperature but not necessarily.

Heat-resistant enzymes for one thing generally have a much more stable protein structure, often by having more disulfide cross-linkages than normal.  This allows them to function at higher temperatures before unfolding (denaturing).
wrote...
#3
11 years ago
Since form is what imparts function the fact that the two enzymes are catalyzing the same reactions means that they are shaped the same. If one is more heat resistant than the other that means it has something more than typical non-covalent bonding patterns. This would possibly mean more cysteine-cysteine covalent disulfide linkages. The disulfide bonds would keep the enzyme from denaturing at normal temperatures because covalent bonds are much harder to break than hydrogen bonds and hydrostatic interactions.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1095 People Browsing
 118 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 284
  
 257
  
 1098
Your Opinion
Previous poll results: Which is the best fuel for late night cramming?