Transport Across Membranes

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by همسه سامر عبد المجيد ابو خرمه _ - Saturday, 19 February 2022, 2:32 PM

Aquaporins (AQP) are integral membrane proteins that serve as channels in the transfer of water, and in some cases, small solutes across the membrane.They are conserved in bacteria, plants, and animals.

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ABC Type of ATPase

by منى امين سعد الدين صدر _ - Saturday, 12 March 2022, 7:22 AM

The ATP-binding cassette transporters (ABC transporters) are a transport system,ABC transporters often consist of multiple subunits, one or two of which are transmembrane proteins and one or two of which are membrane-associated AAA ATPases
transporters are also involved in multiple drug resistance, and this is how some of them were first identified. When the ABC transport proteins are overexpressed in cancer cells, they can export anticancer drugs and render tumors resistant

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alternating conformation model

by حلا خالد محمود صالح _ - Sunday, 20 February 2022, 12:31 PM

states that a carrier protein is allosteric protein and alternates between two conformational states