First the H3.H4 assemble into tetramer (HOI) then DNA wrapped over H3.H4 tetramer. 

TLS Online TPP Program

#Id: 2837

#Unit 13. Methods in Biology

Maltose-Binding Protein (MBP) One-step purification can be achieved using amylose resin

TLS Online TPP Program

#Id: 1254

#Unit 7. System Physiology – Animal

The major action of ADH on principal cells in the late distal tubule and collecting duct

TLS Online TPP Program

#Id: 3218

#Unit 4. Cell Communication and Cell Signaling

Chemical carcinogens classified into two general categories:
1. Direct-acting carcinogens
2. Indirect-acting carcinogens

TLS Online TPP Program

#Id: 8094

#Unit 1. Molecules and their Interaction Relevant to Biology

Platelet-activating factor has a long ether-linked alkyl chain at C-1 of glycerol, but C-2 is ester-linked to acetic acid, which makes the compound much more water-soluble than most glycerophospholipids and plasmalogens.

TLS Online TPP Program

#Id: 6310

#Unit 3. Fundamental Processes

in E. coli, GreA and GreB enable the polymerase to cleave a few ribonucleotides from the 3’ terminus of the RNA product, thereby allowing the catalytic site of RNA polymerase to be realigned with the 3’–OH to release stalled polymerase