Intracellular pH and activation of sea urchin eggs after fertilisation.
The intracellular pH of the sea urchin embryo increases 0.3 pH units between 1 and 4 min after fertilisation. The increase in pH is required for initiating development. The increase results from an exchange of extracellular Na+ for intracellular H+.
D000584:Amiloride / Q000494:pharmacology; D000641:Ammonia / Q000494:pharmacology; D000818:Animals; D001692:Biological Transport / Q000187:drug effects; D002455:Cell Division; D003593:Cytoplasm / Q000502:physiology; D005260:Female; D005306:Fertilization; D006863:Hydrogen-Ion Concentration; D011522:Protons; D012617:Sea Urchins; D012964:Sodium; D015053:Zygote / Q000378:metabolism* / Q000648:ultrastructure
D011522:Protons; D000641:Ammonia; D000584:Amiloride; D012964:Sodium