There are 6000 genes in yeast; 21,700 in a nematode worm; 17,000 in a fly; 25,000 in the small plant Arabidopsis; and probably 20,000 to 25,000 in mice and humans

TLS Online TPP Program

#Id: 9074

#Unit 4. Cell Communication and Cell Signaling

Activation of β-adrenergic receptors causes activation of C subunits of PKA which phosphorylate PDE, stimulating its catalytic activity.

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#Id: 5463

#Unit 7. System Physiology – Animal

High affinity Neurotrophins  receptors

Tyrosine kinase associated (Trk) receptors 

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#Id: 3089

#Unit 3. Fundamental Processes

FtsZ is a GTPase that forms a ring on the inside of the bacterial envelope. It is connected to other cytoskeletal components.

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#Id: 604

#Unit 2. Cellular Organization

The N gene codes for an antitermination factor whose action at nut (N utilization) sites allows transcription to proceed into the delayed early genes

 

TLS Online TPP Program

#Id: 7693

#Unit 1. Molecules and their Interaction Relevant to Biology

                                                           aa motif / Coiled-coils

Two helices are wound around each other

Alpha-helices are packed together through the hydrophobic interactions

These two helices are found to be stable in solution

They are generally found in transcription factors and intermediate filaments

They have heptad (7 amino acid) repeated sequences