Cited by 1,509PI3K/AKT/mTOR signaling in cancerSignaling Pathways in DiseaseFungal and yeast genetics research

RAFT1: A mammalian protein that binds to FKBP12 in a rapamycin-dependent fashion and is homologous to yeast TORs

Sabatini, David M., Erdjument-Bromage, Hediye, Lui, Mary, Tempst, Paul, Snyder, Solomon H.·1994·Cell

Abstract

The immunosuppressants rapamycin and FK506 bind to the same intracellular protein, the immunophilin FKBP12. The FKB12-FK506 complex interacts with and inhibits the Ca(2+)-activated protein phosphatase calcineurin. The target of the FKBP12-rapamycin complex has not yet been identified. We report that a protein complex containing 245 kDa and 35 kDa components, designated rapamycin and FKBP12 targets 1 and 2 (RAFT1 and RAFT2), interacts with FKBP12 in a rapamycin-dependent manner. Sequences (330 amino acids total) of tryptic peptides derived from the 245 kDa RAFT1 reveal striking homologies to the yeast TOR gene products, which were originally identified by mutations that confer rapamycin resistance in yeast. A RAFT1 cDNA was obtained and found to encode a 289 kDa protein (2549 amino acids) that is 43% and 39% identical to TOR2 and TOR1, respectively. We propose that RAFT1 is the direct target of FKBP12-rapamycin and a mammalian homolog of the TOR proteins.

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Crossref · 10.1016/0092-8674(94)90570-3

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57 of 57 references verified0 citation errors · 0 not checkable

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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 Sabatini 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 [79]

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Authors
Sabatini, D. M., Erdjument-Bromage, H., Lui, M., Tempst, P., & Snyder, S. H.
Affiliations
  • Johns Hopkins University (US)
  • Memorial Sloan Kettering Cancer Center (US)
Venue
Cell
Publisher
Elsevier BV
Published
1994-07
Volume
78
Issue
1
Pages
35-43
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2114859236
Cited by
1,509
References
57
Citations by year
2026: 20 · 2025: 27 · 2024: 48 · 2023: 45 · 2022: 52 · 2021: 65 · 2020: 59 · 2019: 60 · 2018: 61 · 2017: 51 · 2016: 52 · 2015: 63 · 2014: 61 · 2013: 53 · 2012: 47
FWCI
23.47
Type
journal article
Language
en
Open access
closed
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Drug Abuse (DA 00074, DA.00266)
  • National Institute of General Medical Sciences (T32GM007309, GM07309)
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 › Fungal and yeast genetics research
Keywords
FKBP12, rapamycin, TOR1, TOR2, FK506, immunophilins, protein complexes, rapamycin resistance, calcineurin, immunosuppressants
MeSH terms
Amino Acid Sequence, Animals, Base Sequence, Brain Chemistry, Carrier Proteins, Cloning, Molecular, Cross-Linking Reagents, Fungal Proteins, Heat-Shock Proteins, Molecular Sequence Data, Polyenes, Saccharomyces cerevisiae, Succinimides, Sequence Alignment, Tacrolimus, Sequence Homology, Amino Acid, Sequence Analysis, Phosphotransferases (Alcohol Group Acceptor), DNA, Complementary, Cell Cycle Proteins, Phosphatidylinositol 3-Kinases, Sirolimus, Tacrolimus Binding Proteins, Saccharomyces cerevisiae Proteins, Rats, TOR Serine-Threonine Kinases

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