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Molecular cell biology

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Question:

Second step in Ca2+ transport?

Author: Rhianna Briant



Answer:

When calcium is bound, the pump closes, and ATP is hydrolysed. This results in the transfer of a phosphate group to a conserved aspartate (Aspartate 351) in the P-domain. In this state, the calcium ions are trapped between the helices within the membrane.


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