Elastic model of a DNA loop in the lac operon, 

Elastic model of a DNA loop in the lac operon, 

Elastic model of a DNA loop in the lac operon,  Balaeff, A., L. Mahadevan, and K. Schulten,  Physical Review Letters , 83, 4900-03, 1999.
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Abstract

We use the theory of elasticity to compute the shape of the DNA loop bridging the gap in the
crystal structure of the lac repressor-DNA complex. The Kirchhoff system of equations with boundary
conditions derived from the crystal structure is solved using a continuation method. This approach can
be applied effectively to find coarse-grained conformational minima of DNA loops.