Peroxins

Catalyse peroxisomal protein import by ATP hydrolysis.

TLS Online TPP Program

#Id: 3980

#Unit 2. Cellular Organization

Eukaryotic cells also have type I and type II topoisomerases. The type I enzymes are topoisomerases I and III;

The eukaryotic type II topoisomerases cannot underwind DNA (introduce negative supercoils), but they can relax both positive and negative supercoils.

TLS Online TPP Program

#Id: 10013

#Unit 4. Cell Communication and Cell Signaling

In the absence of Hh,

Ptc inhibits Smoothened and then degraded in proteasomes

TLS Online TPP Program

#Id: 7873

#Unit 1. Molecules and their Interaction Relevant to Biology

A nonenzymatic reaction occurs between glucose and primary amino  groups in hemoglobin (either the amino-terminal Val or the ´-amino -amino groups of Lys residues) forms GHB

TLS Online TPP Program

#Id: 3599

#Unit 3. Fundamental Processes

The third base of each codon plays a lesser role in specifying an amino acid than the first two.

TLS Online TPP Program

#Id: 6001

#Unit 3. Fundamental Processes

By counting the number of sites to which ORC binds, we can estimate that there are about 400 origins of replication in the yeast genome. This means that the average length of a replicon is 35,000 bp.