The MDM2 protein in its active form can form a complex with p53, inhibiting the transcription factor and causing p53 ubiquitinylation and subsequent proteasomal degradation, ATM phosphorylates MDM2 to inactivate it, causing increased stabilization of p53, but there is one another gene or key regulator which controls the level of MDM2;

#Question id: 2239

#Unit 2. Cellular Organization

Consider the transport of K+ from the blood (where its concentration is about 4 mM) into an erythrocyte that contains 150 mM K+.  The transmembrane potential is about 60 mV, inside negative relative to outside.  The free-energy change for this transport process is:  (These values may be of use to you:  R = 8.315 J/mol.K; T = 298 K; 9 (Faraday constant) = 96,480 J/V; N = 6.022×10²³ /mol.)

#Question id: 28904

#Unit 4. Cell Communication and Cell Signaling

There are some given examples of antagonists of Wnt, except?

#Question id: 5642

#Unit 5. Developmental Biology

One of the earliest events in arabidopsis development is formation of the _____ axis, in response to a gradient of _____.

#Question id: 785

#Unit 1. Molecules and their Interaction Relevant to Biology

Several types of very short RNAs repress—or silence—expression of genes with homology to those short RNAs. They are produced from a variety of sources and direct the silencing of genes in the following different ways-

#Question id: 829

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one is the incorrect conclusion of Anfinsen’s eperiments?