Cited by 2,053PI3K/AKT/mTOR signaling in cancerSignaling Pathways in DiseaseProtein Kinase Regulation and GTPase Signaling

A mammalian protein targeted by G1-arresting rapamycin–receptor complex

Brown, Eric J., Albers, Mark W., Bum Shin, Tae, ichikawa, Kazuo, Keith, Curtis T., Lane, William S., Schreiber, Stuart L.·1994·Nature

Abstract

The structurally related natural products rapamycin and FK506 bind to the same intracellular receptor, FKBP12, yet the resulting complexes interfere with distinct signalling pathways. FKBP12-rapamycin inhibits progression through the G1 phase of the cell cycle in osteosarcoma, liver and T cells as well as in yeast, and interferes with mitogenic signalling pathways that are involved in G1 progression, namely with activation of the protein p70S6k (refs 5, 11-13) and cyclin-dependent kinases. Here we isolate a mammalian FKBP-rapamycin-associated protein (FRAP) whose binding to structural variants of rapamycin complexed to FKBP12 correlates with the ability of these ligands to inhibit cell-cycle progression. Peptide sequences from purified bovine FRAP were used to isolate a human cDNA clone that is highly related to the DRR1/TOR1 and DRR2/TOR2 gene products from Saccharomyces cerevisiae. Although it has not been previously demonstrated that either of the DRR/TOR gene products can bind the FKBP-rapamycin complex directly, these yeast genes have been genetically linked to a rapamycin-sensitive pathway and are thought to encode lipid kinases.

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Crossref · 10.1038/369756a0

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  • These natural products remodeled their target proteins (immunophilins), recruiting novel interacting proteins to form entirely new ternary complexes.

    “their combined research revealed that these natural products remodeled their target proteins, a group of proteins named the immunophilins, recruiting novel interacting proteins to form entirely new ternary complexes (liu et al. 1991;Brown et al. 1994;Sabatini et al. 1994).”

    From From serendipity to strategy: molecular glue degraders in cancer therapeutics (2025) · cites this paper as Brown et al. 1994

  • FK506 and rapamycin bind FKPB12, and these binary complexes induce inhibitory interactions with calcineurin and FRAP/mTOR, respectively.

    “The former two bind to FKPB12 and these binary complexes induce inhibitory interactions with calcineurin and FRAP (later mTOR, mammalian Target of Rapamycin), respectively.78,79”

    From Chasing molecular glue degraders: screening approaches (2022) · cites this paper as [78]

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Authors
Brown, E. J., Albers, M. W., Bum Shin, T., ichikawa, K., Keith, C. T., Lane, W. S., & Schreiber, S. L.
Affiliations
  • Howard Hughes Medical Institute (US)
  • Harvard University (US)
Venue
Nature
Published
1994-06
Volume
369
Issue
6483
Pages
756-758
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2057106513
Cited by
2,053
References
28
Citations by year
2026: 35 · 2025: 51 · 2024: 60 · 2023: 70 · 2022: 66 · 2021: 80 · 2020: 61 · 2019: 67 · 2018: 70 · 2017: 75 · 2016: 73 · 2015: 97 · 2014: 85 · 2013: 91 · 2012: 83
FWCI
27.59
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Signaling Pathways in Disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
rapamycin, FKBP12, FRAP, TOR1, TOR2, G1 cell cycle arrest, p70 S6 kinase, cyclin-dependent kinases, mitogenic signaling, lipid kinase, protein binding, cDNA cloning
MeSH terms
Amino Acid Sequence, Animals, Carrier Proteins, Cattle, Cell Line, Cloning, Molecular, Fungal Proteins, Heat-Shock Proteins, Humans, Molecular Sequence Data, Polyenes, Proteins, Recombinant Fusion Proteins, Saccharomyces cerevisiae, G1 Phase, Sequence Homology, Amino Acid, Phosphotransferases (Alcohol Group Acceptor), DNA, Complementary, Cell Cycle Proteins, Phosphatidylinositol 3-Kinases, Immunophilins, Sirolimus, Tacrolimus Binding Proteins, Saccharomyces cerevisiae Proteins, TOR Serine-Threonine Kinases

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