PMID- 34519268 OWN - NLM STAT- MEDLINE DCOM- 20211027 LR - 20240403 IS - 2050-084X (Electronic) IS - 2050-084X (Linking) VI - 10 DP - 2021 Sep 14 TI - Regulation of human mTOR complexes by DEPTOR. LID - 10.7554/eLife.70871 [doi] LID - e70871 AB - The vertebrate-specific DEP domain-containing mTOR interacting protein (DEPTOR), an oncoprotein or tumor suppressor, has important roles in metabolism, immunity, and cancer. It is the only protein that binds and regulates both complexes of mammalian target of rapamycin (mTOR), a central regulator of cell growth. Biochemical analysis and cryo-EM reconstructions of DEPTOR bound to human mTOR complex 1 (mTORC1) and mTORC2 reveal that both structured regions of DEPTOR, the PDZ domain and the DEP domain tandem (DEPt), are involved in mTOR interaction. The PDZ domain binds tightly with mildly activating effect, but then acts as an anchor for DEPt association that allosterically suppresses mTOR activation. The binding interfaces of the PDZ domain and DEPt also support further regulation by other signaling pathways. A separate, substrate-like mode of interaction for DEPTOR phosphorylation by mTOR complexes rationalizes inhibition of non-stimulated mTOR activity at higher DEPTOR concentrations. The multifaceted interplay between DEPTOR and mTOR provides a basis for understanding the divergent roles of DEPTOR in physiology and opens new routes for targeting the mTOR-DEPTOR interaction in disease. CI - (c) 2021, Walchli et al. FAU - Walchli, Matthias AU - Walchli M AUID- ORCID: 0000-0001-9354-3079 AD - Biozentrum, University of Basel, Basel, Switzerland. FAU - Berneiser, Karolin AU - Berneiser K AUID- ORCID: 0000-0002-0963-8559 AD - Biozentrum, University of Basel, Basel, Switzerland. FAU - Mangia, Francesca AU - Mangia F AUID- ORCID: 0000-0001-5430-397X AD - Biozentrum, University of Basel, Basel, Switzerland. FAU - Imseng, Stefan AU - Imseng S AUID- ORCID: 0000-0002-0248-0795 AD - Biozentrum, University of Basel, Basel, Switzerland. FAU - Craigie, Louise-Marie AU - Craigie LM AD - Biozentrum, University of Basel, Basel, Switzerland. FAU - Stuttfeld, Edward AU - Stuttfeld E AUID- ORCID: 0000-0003-3932-9076 AD - Biozentrum, University of Basel, Basel, Switzerland. FAU - Hall, Michael N AU - Hall MN AUID- ORCID: 0000-0002-2998-0757 AD - Biozentrum, University of Basel, Basel, Switzerland. FAU - Maier, Timm AU - Maier T AUID- ORCID: 0000-0002-7459-1363 AD - Biozentrum, University of Basel, Basel, Switzerland. LA - eng GR - 141735/SNSF_/Swiss National Science Foundation/Switzerland PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210914 PL - England TA - Elife JT - eLife JID - 101579614 RN - 0 (Intracellular Signaling Peptides and Proteins) RN - EC 2.7.1.1 (DEPTOR protein, human) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animals MH - Cell Line MH - Cryoelectron Microscopy MH - Crystallography, X-Ray MH - Gene Expression Regulation/*physiology MH - Humans MH - Intracellular Signaling Peptides and Proteins/genetics/*metabolism MH - Moths MH - Protein Domains MH - TOR Serine-Threonine Kinases/genetics/*metabolism PMC - PMC8439649 OTO - NOTNLM OT - DEPTOR OT - cancer OT - cryo-EM OT - human OT - mTOR OT - metabolism OT - molecular biophysics OT - signaling OT - structural biology COIS- MW, KB, FM, SI, LC, ES, MH, TM None EDAT- 2021/09/15 06:00 MHDA- 2021/10/28 06:00 PMCR- 2021/09/14 CRDT- 2021/09/14 08:41 PHST- 2021/06/01 00:00 [received] PHST- 2021/07/31 00:00 [accepted] PHST- 2021/09/14 08:41 [entrez] PHST- 2021/09/15 06:00 [pubmed] PHST- 2021/10/28 06:00 [medline] PHST- 2021/09/14 00:00 [pmc-release] AID - 70871 [pii] AID - 10.7554/eLife.70871 [doi] PST - epublish SO - Elife. 2021 Sep 14;10:e70871. doi: 10.7554/eLife.70871.