The human zona pellucida has four major glycoproteins— ZP1, ZP2, ZP3, and ZP4

TLS Online TPP Program

#Id: 6006

#Unit 3. Fundamental Processes

ATP is required for the binding, but is not hydrolyzed until a later stage. The transcription factor ABF1 binds to the B3 element; this assists initiation by affecting chromatin structure, but it is the events that occur at the A and B1 elements that actually cause initiation

TLS Online TPP Program

#Id: 8488

#Unit 1. Molecules and their Interaction Relevant to Biology

TLS Online TPP Program

#Id: 9373

#Unit 4. Cell Communication and Cell Signaling

Smad7 binds to the activated RI receptors and blocks its ability to phosphorylate Smad2 or Smad3. 

TLS Online TPP Program

#Id: 1461

#Unit 4. Cell Communication and Cell Signaling

CAMs fall into one of four major families: 

• Cadherins

• Immunoglobulin (Ig) superfamily

• Integrins

• Selectins

TLS Online TPP Program

#Id: 1661

#Unit 4. Cell Communication and Cell Signaling

Use of Passive vaccine, 

a. Immune deficiency

b, Toxin or venom exposure with immediate threat to life

c, Exposure to pathogens that can cause death faster