Interphase chromatin is a mass occupying a large part of the nuclear volume

TLS Online TPP Program

#Id: 6024

#Unit 3. Fundamental Processes

DNA polymerase a is unusual because it has the ability to initiate a new strand. It is used to initiate both the leading and lagging strands. 

The enzyme exists as a complex consisting of a 180-kD catalytic (DNA polymerase) subunit, which is associated with three other subunits: the B subunit that appears necessary for assembly, and two small subunits that provide the primase (RNA polymerase) activity.  It has dual capacity to prime and extend chains, this complex is often called pol a/primase.

TLS Online TPP Program

#Id: 3206

#Unit 3. Fundamental Processes

Photoreactivation is a nonmutagenic repair system that acts specifically on pyrimidine dimers

TLS Online TPP Program

#Id: 7193

#Unit 5. Developmental Biology

Class I MHC, glycoproteins expressed on the surface of nearly all nucleated cells; the major function of the class I is presentation of endogenous peptide antigens to CD8+ T cells.

TLS Online TPP Program

#Id: 1137

#Unit 2. Cellular Organization

Phosphatase in cell cycle-

Cdc25A phosphatase Activates vertebrate S phase CDKs

Cdc25C phosphatase Activates vertebrate mitotic CDKs

TLS Online TPP Program

#Id: 7965

#Unit 2. Cellular Organization

Unassembled or misfolded proteins in the ER are often transported back to the cytosol, where they are degraded in the ubiquitin-proteasome pathway