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___________ synthesizes N-acetyllactosamine using a carbon-celite column to remove it, as soon as it is formed.

(a) Dextransucrase

(b) Streptokinase

(c) β – galactosidase

(d) Ribonuclease

I have been asked this question in an online interview.

The origin of the question is Recent Advances in section Recent Advances in Enzyme Technology of Enzyme Technology

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Right option is (c) β – galactosidase

Easiest explanation: N-acetyllactosamine is a β-D-galactopyranosyl-(1,6)-2-acetamido-2-deoxy-D-glucose which is synthesized by using β – galactosidase using a carbon-celite column to remove it, as soon as it is formed. Dextransucrase is used to produce dextran from sucrose. Streptokinase is used in the treatment of blood clots and it converts plasminogen to plasmin. Ribonuclease has an antiviral activity that acts by hydrolyzing RNA.

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