In instructive interaction, 

a signal from the inducing cell is necessary for initiating new gene expression in the responding cell.

TLS Online TPP Program

#Id: 3280

#Unit 3. Fundamental Processes

MutS embraces the mismatch-containing DNA, inducing a pronounced kink in the DNA and a conformational change in MutS itself.

TLS Online TPP Program

#Id: 7686

#Unit 1. Molecules and their Interaction Relevant to Biology

                                                                        Helix-turn-Helix

Two helices are connected by a small loop or turn

These helices are stabilized by non-polar contacts between the helices

Mostly found in DNA binding proteins, directly involved in DNA binding

Generally consists of 20 amino acids

Second helix is involved in DNA binding, enters in major groove of the target site

TLS Online TPP Program

#Id: 5536

#Unit 7. System Physiology – Animal

The thin segment of the ascending limb has a much lower reabsorptive capacity than does the thick segment.

TLS Online TPP Program

#Id: 10525

#Unit 4. Cell Communication and Cell Signaling

During apoptosis

caspase-3 cleaves the inactive phospholipid scramblase XKR8. 

TLS Online TPP Program

#Id: 5889

#Unit 3. Fundamental Processes

DNA polymerases show an impressive ability to distinguish between ribonucleoside and deoxyribonucleoside triphosphates (rNTPs 10 and 1 dNTPs)