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TLS Online TPP Program

#Id: 9039

The tighter the binding of a ligand to its receptor,the lower the concentration of ligand needed to achieve binding to 50 percent of the receptors.

#Unit 4. Cell Communication and Cell Signaling #G Protein–Coupled Receptors #Part B Pointers
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TLS Online TPP Program

#Id: 387

#Unit 2. Cellular Organization

The nucleosome has an approximate twofold axis of symmetry, called the dyad axis.
TLS Online TPP Program

#Id: 388

#Unit 2. Cellular Organization

DNA enters at 1 o’clock and exits at just short of 11 o’clock on one axis and they change time after 180 degree rotation
TLS Online TPP Program

#Id: 389

#Unit 2. Cellular Organization

The H3.H4 tetramers and H2A.H2B dimers each interact with a particular region of the DNA within the nucleosome can be shown by clock analogy.
 
TLS Online TPP Program

#Id: 390

#Unit 2. Cellular Organization

Of the 147 bp of DNA included in the structure, the histone-fold regions of the H3.H4 tetramer interact with the central 60 bp.
TLS Online TPP Program

#Id: 391

#Unit 2. Cellular Organization

The H3.H4 tetramer forms the top half of the histone octamer. Histone H3.H4 tetramers occupy a key position in the nucleosome by binding the middle and both ends of the DNA
TLS Online TPP Program

#Id: 392

#Unit 2. Cellular Organization

The two H2A.H2B dimers each associate with 30 bp of DNA on either side of the central 60 bp of DNA bound by H3 and H4.