The types of the intracellular mechanisms used by a given stem cell are in part the downstream net result of the extracellular stimuli in its niche.

TLS Online TPP Program

#Id: 9319

#Unit 4. Cell Communication and Cell Signaling

Gαt contains an intrinsic GTPase activity by GAP complex, RGS9-Gβ5 triggers the rapid inactivation of the PDE

TLS Online TPP Program

#Id: 1719

#Unit 4. Cell Communication and Cell Signaling

The other IgE receptor, designated FcεRII, or CD23, has a much lower affinity for IgE (Kd of 1 * 10 6 M -1 )

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#Id: 6517

#Unit 7. System Physiology – Animal

Phenylethanolamine-N-methyltransferase catalyzes the formation of epinephrine from norepinephrine, is found in appreciable quantities only in the brain and the adrenal medulla

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#Id: 2962

#Unit 3. Fundamental Processes

When replication is initiated, Cdc6, and Cdt1 are displaced. The degradation of Cdc6 prevents reinitiation.

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#Id: 426

#Unit 2. Cellular Organization

Heterochromatin generally maintains 10,000-fold compaction in both interphase and mitosis after 30 nm.