ID #2274

Do early endosomoes contain a proton pump but not hydrolytic enzymes?

Yes, early endosomes do not contain hydrolytic enzymes. Those are shuttled in transport vesicles from the golgi to late endosomes. But early endosomes do contain proton pumps. As early endosomes continue to acidify when more and more protons get pumped in, they develop into late endosomes and ultimately into lysosomes.

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