SRY is a DNA-binding regulatory Protein, bends the DNA & acts as a transcription factor that initiates transcription of a cascade of genes necessary for testicular differentiation

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#Id: 6960

#Unit 8. Inheritance Biology

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#Id: 10490

#Unit 4. Cell Communication and Cell Signaling

perforins punch holes in the endocytic vesicle membrane, allowing granzymes to enter the cytoplasm

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#Id: 1364

#Unit 4. Cell Communication and Cell Signaling

Phosphorylation of the activation loop leads to a conformational change in the JAK kinase that enhances the affinity of the enzyme for ATP & increasing kinase activity.

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#Id: 6373

#Unit 2. Cellular Organization

The lac mRNA (as most mRNA is in bacteria) is extremely unstable and decays with a half-life of only 3 minutes.

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#Id: 1461

#Unit 4. Cell Communication and Cell Signaling

CAMs fall into one of four major families: 

• Cadherins

• Immunoglobulin (Ig) superfamily

• Integrins

• Selectins