Rapid termination mechanisms of the Rhodopsin Signalling:

1.GAP that inactivates Gαt·GTP

2.Ca2+ -sensing proteins that activate Guanylate Cyclase

3.Rhodopsin Phosphorylation and Binding of Arrestin

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#Id: 1555

#Unit 4. Cell Communication and Cell Signaling

Wnts are paracrine factors that make up a large family of cysteine-rich glycoproteins.

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#Id: 3801

#Unit 5. Developmental Biology

Cell Aggregation & Differentiation is common to all Dictyostelids.

It consists of an interconnected programme of cell movement and cell differentiation.

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#Id: 3853

#Unit 5. Developmental Biology

In D. discoideum cAMP phosphodiesterase RegA plays a crucial role in regulating intracellular cAMP levels cells & level of PKA activity.

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#Id: 6514

#Unit 7. System Physiology – Animal

Dopamine is converted to norepinephrine by dopamine β -hydroxylase

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#Id: 9797

#Unit 6. System Physiology – Plant

In dark-grown or etiolated plants, phytochrome is present in a red light–absorbing form, referred to as Pr. Pr, which to the human eye is blue, is converted by red light to a far-red light–absorbing form called Pfr, which is blue-green.