APOBEC3G (A3G)—is a potent inhibitor of infection by a range of retroviruses, including HIV. deaminates Cs to produce Us in that DNA strand, leading to hypermutation at levels the virus cannot accommodate, or even to destruction of the damaged strand by DNA glycosylase and apurinic apyrimidinic endonuclease

TLS Online TPP Program

#Id: 5053

#Unit 3. Fundamental Processes

DnaA has a weak ATPase intrinsic activity which is enhanced by a factor termed Hda.

In a conceptually elegant feedback loop, Hda is recruited to a replication origin via the b subunit of the DNA polymerase. it acts to switch off DnaA

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#Id: 1571

#Unit 4. Cell Communication and Cell Signaling

In the absence of Wnts,

β-catenin is bound in a complex with Axin (a scaffold protein), APC, and kinases CK1 and GSK3.

TLS Online TPP Program

#Id: 2992

#Unit 3. Fundamental Processes

DNA polymerase I has a unique 5 '-3' exonuclease activity that can be combined with DNA synthesis to perform nick translation.

TLS Online TPP Program

#Id: 9819

#Unit 6. System Physiology – Plant

Arabidopsis seeds can be induced to germinate with red light in the range of 0.001 to 0.1 μmol m–2 at very-low-fluence responses (VLFRs).

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#Id: 8894

#Unit 2. Cellular Organization

Syntelic attachment 

Both kinetochores of a sister chromatid pair can attach to microtubules from the same pole