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firefighter61 firefighter61
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11 years ago
They both are enzymes that catalyze the same reaction. What does protein structure have to do with this?
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#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.
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#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).
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#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.
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