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.

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#Id: 6123

#Unit 3. Fundamental Processes

Base excision repair is triggered by directly removing a damaged base from DNA. In E.coli, system include

Uracil DNA glycosylases

AP endonuclease

DNA polymerase I 

DNA ligase

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#Id: 5781

#Unit 7. System Physiology – Animal

Each spherical follicle is surrounded by a single layer of polarized epithelial cells and filled with pink-staining proteinaceous material called colloid.

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#Id: 5676

#Unit 7. System Physiology – Animal

K+ & Ca2+ enter via the channel and produce depolarization

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#Id: 7936

#Unit 2. Cellular Organization

The SRP is made up of six proteins bound to a 300-nucleotide RNA, which acts as a scaffold for the hexamer.

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#Id: 6865

#Unit 3. Fundamental Processes

E(var) mutations lie in genes whose products are needed to activate gene expression. They include members of the SWI/SNF complex