4JSV

mTOR kinase structure, mechanism and regulation.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

mTOR kinase structure, mechanism and regulation.

Yang, H.Rudge, D.G.Koos, J.D.Vaidialingam, B.Yang, H.J.Pavletich, N.P.

(2013) Nature 497: 217-223

  • DOI: 10.1038/nature12122
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The mammalian target of rapamycin (mTOR), a phosphoinositide 3-kinase-related protein kinase, controls cell growth in response to nutrients and growth factors and is frequently deregulated in cancer. Here we report co-crystal structures of a complex ...

    The mammalian target of rapamycin (mTOR), a phosphoinositide 3-kinase-related protein kinase, controls cell growth in response to nutrients and growth factors and is frequently deregulated in cancer. Here we report co-crystal structures of a complex of truncated mTOR and mammalian lethal with SEC13 protein 8 (mLST8) with an ATP transition state mimic and with ATP-site inhibitors. The structures reveal an intrinsically active kinase conformation, with catalytic residues and a catalytic mechanism remarkably similar to canonical protein kinases. The active site is highly recessed owing to the FKBP12-rapamycin-binding (FRB) domain and an inhibitory helix protruding from the catalytic cleft. mTOR-activating mutations map to the structural framework that holds these elements in place, indicating that the kinase is controlled by restricted access. In vitro biochemistry shows that the FRB domain acts as a gatekeeper, with its rapamycin-binding site interacting with substrates to grant them access to the restricted active site. Rapamycin-FKBP12 inhibits the kinase by directly blocking substrate recruitment and by further restricting active-site access. The structures also reveal active-site residues and conformational changes that underlie inhibitor potency and specificity.


    Organizational Affiliation

    Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase mTOR
B, A
1174Homo sapiensMutation(s): 0 
Gene Names: MTOR (FRAP, FRAP1, FRAP2, RAFT1, RAPT1)
EC: 2.7.11.1
Find proteins for P42345 (Homo sapiens)
Go to Gene View: MTOR
Go to UniProtKB:  P42345
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Target of rapamycin complex subunit LST8
D, C
326Homo sapiensMutation(s): 0 
Gene Names: MLST8 (GBL, LST8)
Find proteins for Q9BVC4 (Homo sapiens)
Go to Gene View: MLST8
Go to UniProtKB:  Q9BVC4
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MGF
Query on MGF

Download SDF File 
Download CCD File 
A, B
TRIFLUOROMAGNESATE
F3 Mg
GJOMWUHGUQLOAC-UHFFFAOYSA-K
 Ligand Interaction
ADP
Query on ADP

Download SDF File 
Download CCD File 
A, B
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.231 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 139.400α = 90.00
b = 163.200β = 90.00
c = 207.800γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
ADSCdata collection
SHARPphasing
SCALEPACKdata scaling
REFMACrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-05-01
    Type: Initial release
  • Version 1.1: 2013-05-08
    Type: Structure summary
  • Version 1.2: 2013-05-29
    Type: Database references