ADP-ribosylation blocks the GTPase activity of Gαs and renders Gαs permanently active. 

TLS Online TPP Program

#Id: 7877

#Unit 2. Cellular Organization

The cristae’s membranes are the site of ATP synthesis thus the invaginations increase the mitochondrion’s capacity to generate ATP.

TLS Online TPP Program

#Id: 1104

#Unit 2. Cellular Organization

Transmembrane domain with the binding sites for transported ligand.

TLS Online TPP Program

#Id: 1047

#Unit 5. Developmental Biology

The cells found within the most posterior region of the progress zone constitute the zone of polarizing activity.

TLS Online TPP Program

#Id: 695

#Unit 3. Fundamental Processes

1. DNA polymerase I is a single polypeptide of 103 kD. 

2. The chain can be cleaved into two parts by proteolytic treatment. The larger cleavage product (68 kD) is called the Klenow fragment. It is used in synthetic reactions in vitro. 

3. It contains the polymerase and the proofreading 3’–5’ exonuclease activities.

TLS Online TPP Program

#Id: 9755

#Unit 6. System Physiology – Plant

In Arabidopsis, a calmodulin-binding transcriptional

regulator called IQD1 mediates of defense responses against insect herbivory. IQD1 binds calmodulin, a major Ca2+-binding protein