25974
We previously established that OAT1 constitutively internalizes from and recycles back to cell surface , and that activation of protein kinase C ( PKC ) inhibits OAT1 activity by promoting ubiquitination of the transporter , which then leads to an accelerated internalization of the transporter from cell surface to intracellular compartments .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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