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Figure 1 | Cell Communication and Signaling

Figure 1

From: Implications of purinergic receptor-mediated intracellular calcium transients in neural differentiation

Figure 1

Oscillations of [Ca2+] i levels and purinergic receptors. Ionotropic P2X receptors trigger calcium spikes characterized by amplitudes and frequency (A), while metabotropic P2Y receptors induce calcium waves with lower amplitudes and frequencies (B). P2X receptors are composed of three subunits, with two transmembrane loops each. G protein-coupled metabotropic P2Y receptors are composed of 7 transmembrane loops.

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Cell Communication and Signaling

ISSN: 1478-811X