These histidine's are separated by using Nickel-chelate-nitrilotriacetate (Ni-NTA) chromatography column.

TLS Online TPP Program

#Id: 3405

#Unit 3. Fundamental Processes

SOS response in E. coli: 

The LexA protein is the repressor in this system, which has an operator site near each gene. Because the RecA gene is not entirely repressed by the LexA repressor, the normal cell contains about 1,000 RecA monomers. 

TLS Online TPP Program

#Id: 7545

#Unit 6. System Physiology – Plant

GAI and RGA proteins normally act as repressors of gibberellin responses. Gibberellin acts indirectly through an unidentified signaling intermediate, which is thought to bind to the regulatory domains of the GAI and RGA Proteins. 

TLS Online TPP Program

#Id: 406

#Unit 2. Cellular Organization

In yeast, centromeric nucleosomes consist of Cse4, H4, and a nonhistone protein Scm3, in place of H2A-H2B dimers.

TLS Online TPP Program

#Id: 10310

#Unit 4. Cell Communication and Cell Signaling

Regulation and function of T helper subtypes

TLS Online TPP Program

#Id: 10367

#Unit 4. Cell Communication and Cell Signaling

Daudi tumor cells, which are unable to synthesize β 2-microglobulin.