AP3M1 is a subunit of the AP-3 adaptor protein complex whose abundance is governed by the complex's assembly dynamics PMID:29032074. Within this complex, AP3B1 acts as a rate-limiting assembly factor: depletion of AP3B1 reduces AP3M1 protein abundance, indicating that AP3M1 stability and stoichiometry depend on co-regulation with AP3B1 PMID:29032074. Beyond this co-regulatory relationship within the AP-3 complex, no further mechanistic detail for AP3M1 has been characterized in the available corpus.
| Year | Confidence | Finding | PMIDs | Journal |
|---|---|---|---|---|
| 2017 | Medium | AP3M1 acts as a component of the AP-3 complex, where AP3B1 serves as a rate-limiting step in complex assembly: depletion of AP3B1 induces decreased abundance of AP3M1, consistent with AP3B1 controlling the stoichiometry of AP3M1 within the complex. This interaction was experimentally confirmed at the protein level. | PMID:29032074 | Cell systems |