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: 9351

#Unit 4. Cell Communication and Cell Signaling

RII exhibits constitutive kinase activity; means it is active even when not bound to TGF-β.

TLS Online TPP Program

#Id: 4600

#Unit 13. Methods in Biology

BrdU can CAUSE light induced cell death

TLS Online TPP Program

#Id: 6369

#Unit 2. Cellular Organization

When polymerase binding causes transition to the open complex and initiates transcription. This gives a low level of constitutive expression called the basal level.  Binding of RNA polymerase is the rate-limiting step in this case.

TLS Online TPP Program

#Id: 1812

#Unit 10. Ecological Principles

Exponential growth

Describes population growth for continuous breeders

Such as bacteria, internal parasites, some insects, or humans, reproduction can be continuous.

TLS Online TPP Program

#Id: 4025

#Unit 7. System Physiology – Animal

Large quantities of positive potassium ions diffuse out of the SA node.