An unrestrained supercoil in the DNA path creates tension, but no tension is transmitted along DNA when a supercoil is restrained by protein binding.

TLS Online TPP Program

#Id: 6243

#Unit 8. Inheritance Biology

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#Id: 8452

#Unit 1. Molecules and their Interaction Relevant to Biology

If the α helix lies parallel to the direction of the major groove, the straight α helix can contact 4–6 bp before the bases curve out of the plane of the amino acids in the α helix.

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#Id: 2596

#Unit 13. Methods in Biology

Oligonucleotide-directed mutagenesis.

This technique requires a knowledge of nucleotide sequence, since an oligonucleotide may then be synthesized with the base mutation. 

Annealing of the oligonucleotide to complementary (except for the mutation) single-stranded DNA provides a primer for DNA polymerase to produce a new strand and thus incorporates the primer with the mutation.

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#Id: 9267

#Unit 6. System Physiology – Plant

Diazotrophs are able to catalyze the enzymatic reduction of this compound to ammonia (NH3) using the enzyme nitrogenase

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#Id: 511

#Unit 2. Cellular Organization

Viral and bacteriophage genomes have almost no repeated DNA, and L is approximately equal to N.