can antibody act as enzymes??

Answer 1

Excellent question. After, and I kid you not, years of study I have never come across an antibody (alone or in a complex) acting as an enzyme (speeding up a metabolic process without being changed by the process and producing a product from the conjucture of two dissimilar substances). Hope this helps you out.

Answer 2

I am a biologist and have never heard of antibodies acting as enzymes.

However, they are often purposefully linked to enzymes (such as horseradish peroxidase) for use in experiments.