In the presence of PL, Ca2+ , & factor V, activated factor X catalyzes the conversion of prothrombin to thrombin.

TLS Online TPP Program

#Id: 3255

#Unit 6. System Physiology – Plant

Complex I is therefore a proton pump

TLS Online TPP Program

#Id: 1722

#Unit 4. Cell Communication and Cell Signaling

The α chains of the FcεRI, members of the immunoglobulin superfamily, directly bind the IgE heavy chains, whereas the β and γ chains are responsible for signal transduction.

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#Id: 1271

#Unit 7. System Physiology – Animal

The zona glomerulosa is controlled via; Renin-angiotensin-aldosterone system. 

TLS Online TPP Program

#Id: 1730

#Unit 4. Cell Communication and Cell Signaling

Lyn, can play a negative as well as a positive role in FcεRI signaling by phosphorylating and activating the inhibitory FcεRIIB.

TLS Online TPP Program

#Id: 3988

#Unit 2. Cellular Organization

By maintaining the unbound DNA in a relaxed state, topoisomerases facilitate the binding of histones to the DNA and the formation of additional nucleosomes.

Importantly, the overall effect on the plasmid is that the linking number is decreased as more nucleosomes are assembled