(a) The plasmid pBR322 (4362 base pairs) was isolated and the circular DNA was found to be underwound, with a superhelix density () of 0 05 How many superhelical turns does this molecule have (b) Suppose that the molecule was overwound, also with a superhelix density of 0 05 How many superhelical t...

a The superhelix density of a DNA molecule is defined as the number of superhelical turns per 105 ba ...

(a) The plasmid pBR322 (4362 base pairs) was isolated and the circular DNA was found to be...

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(a) The plasmid pBR322 (4362 base pairs) was isolated and the circular DNA was found to be underwound, with a superhelix density (σ) of -0.05. How many superhelical turns does this molecule have?

(b) Suppose that the molecule was overwound, also with a superhelix density of 0.05. How many superhelical turns would this molecule have?

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Biochemistry Concepts And Connections

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Authors: Dean Appling, Spencer Anthony-Cahill, Christopher Mathews

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Question Posted: Nov 06, 2023 03:36 AM

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(a) The plasmid pBR322 (4362 base pairs) was isolated and the circular DNA was found to be...

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