Membrane contact sites (MCSs)

Mitochondria establish MCSs with many other organelles, including ER, lysosomes, peroxisomes, the plasma membrane, the Golgi, endosomes, and even lipid droplets.

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#Id: 9120

#Unit 10. Ecological Principles

I-Predator carrying capacity: Predator can no longer drive prey to extinction. Stable coexistence

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#Id: 10021

#Unit 4. Cell Communication and Cell Signaling

Both Fu and Cos2 become extensively phosphorylated, and Fu-Cos2-Ci complex Dissociates

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#Id: 4598

#Unit 13. Methods in Biology

 The MTT assay can measure cell proliferation or cell death.

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#Id: 6701

#Unit 3. Fundamental Processes

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#Id: 6777

#Unit 3. Fundamental Processes

Mutation of either the 5′ or the 3′ invariant splice-site bases at the ends of the intron resulted in pre-mRNAs that were bound by snRNPs to form spliceosomes; however, RNA splicing was blocked, and the pre-mRNA was retained in the nucleus. 

In contrast, mutation of both the 5′ and 3′ splice sites in the same pre-mRNA resulted in export of the unspliced pre-mRNA, although less efficiently than for the spliced mRNA, probably because of the absence of an exon-junction complex. When both splice sites were mutated, the pre-mRNAs were not efficiently bound by snRNPs, and consequently, their

export was not blocked.