6PTS | pdb_00006pts

NMR data-driven model of KRas-GMPPNP:RBD-CRD complex tethered to a nanodisc (state A)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 3000 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report

Validation slider image for 6PTS

This is version 1.4 of the entry. See complete history

Literature

Multivalent assembly of KRAS with the RAS-binding and cysteine-rich domains of CRAF on the membrane.

Fang, Z.Lee, K.Y.Huo, K.G.Gasmi-Seabrook, G.Zheng, L.Moghal, N.Tsao, M.S.Ikura, M.Marshall, C.B.

(2020) Proc Natl Acad Sci U S A 117: 12101-12108

  • DOI: https://doi.org/10.1073/pnas.1914076117
  • Primary Citation Related Structures: 
    6PTS, 6PTW

  • PubMed Abstract: 

    Membrane anchoring of farnesylated KRAS is critical for activation of RAF kinases, yet our understanding of how these proteins interact on the membrane is limited to isolated domains. The RAS-binding domain (RBD) and cysteine-rich domain (CRD) of RAF engage KRAS and the plasma membrane, unleashing the kinase domain from autoinhibition. Due to experimental challenges, structural insight into this tripartite KRAS:RBD-CRD:membrane complex has relied on molecular dynamics simulations. Here, we report NMR studies of the KRAS:CRAF RBD-CRD complex. We found that the nucleotide-dependent KRAS-RBD interaction results in transient electrostatic interactions between KRAS and CRD, and we mapped the membrane interfaces of the CRD, RBD-CRD, and the KRAS:RBD-CRD complex. RBD-CRD exhibits dynamic interactions with the membrane through the canonical CRD lipid-binding site (CRD β7-8), as well as an alternative interface comprising β6 and the C terminus of CRD and β2 of RBD. Upon complex formation with KRAS, two distinct states were observed by NMR: State A was stabilized by membrane association of CRD β7-8 and KRAS α4-α5 while state B involved the C terminus of CRD, β3-5 of RBD, and part of KRAS α5. Notably, α4-α5, which has been proposed to mediate KRAS dimerization, is accessible only in state B. A cancer-associated mutation on the state B membrane interface of CRAF RBD (E125K) stabilized state B and enhanced kinase activity and cellular MAPK signaling. These studies revealed a dynamic picture of the assembly of the KRAS-CRAF complex via multivalent and dynamic interactions between KRAS, CRAF RBD-CRD, and the membrane.


  • Organizational Affiliation
    • Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2C4, Canada.

Macromolecule Content 

  • Total Structure Weight: 146.21 kDa 
  • Atom Count: 10,142 
  • Modeled Residue Count: 713 
  • Deposited Residue Count: 713 
  • Unique protein chains: 3

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Apolipoprotein A-IA,
B [auth C]
198Homo sapiensMutation(s): 0 
Gene Names: APOA1
UniProt & NIH Common Fund Data Resources
Find proteins for P02647 (Homo sapiens)
Explore P02647 
Go to UniProtKB:  P02647
PHAROS:  P02647
GTEx:  ENSG00000118137 
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02647
Sequence Annotations
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Reference Sequence
Find similar proteins by:|  3D Structure
Entity ID: 2
MoleculeChains  Sequence LengthOrganismDetailsImage
GTPase KRasC [auth B]185Homo sapiensMutation(s): 0 
Gene Names: KRASKRAS2RASK2
EC: 3.6.5.2
UniProt & NIH Common Fund Data Resources
Find proteins for P01116 (Homo sapiens)
Explore P01116 
Go to UniProtKB:  P01116
PHAROS:  P01116
GTEx:  ENSG00000133703 
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01116
Sequence Annotations
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Reference Sequence
Find similar proteins by:|  3D Structure
Entity ID: 3
MoleculeChains  Sequence LengthOrganismDetailsImage
RAF proto-oncogene serine/threonine-protein kinase132Homo sapiensMutation(s): 0 
Gene Names: RAF1RAF
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for P04049 (Homo sapiens)
Explore P04049 
Go to UniProtKB:  P04049
PHAROS:  P04049
GTEx:  ENSG00000132155 
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04049
Sequence Annotations
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Reference Sequence

Small Molecules

Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
17F

Query on 17F



Download:Ideal Coordinates CCD File
AB [auth C]
CC [auth D]
DC [auth D]
EC [auth D]
FC [auth D]
AB [auth C],
CC [auth D],
DC [auth D],
EC [auth D],
FC [auth D],
M [auth A],
N [auth A],
NB [auth B],
OB [auth B],
PB [auth B],
UA [auth C],
VA [auth C],
WA [auth C],
XA [auth C],
YA [auth C],
ZA [auth C]
O-[(S)-({(2R)-2,3-bis[(9Z)-octadec-9-enoyloxy]propyl}oxy)(hydroxy)phosphoryl]-L-serine
C42 H78 N O10 P
WTBFLCSPLLEDEM-JIDRGYQWSA-N
PCW

Query on PCW



Download:Ideal Coordinates CCD File
AA [auth C]
AC [auth D]
BA [auth C]
BB [auth B]
BC [auth D]
AA [auth C],
AC [auth D],
BA [auth C],
BB [auth B],
BC [auth D],
CA [auth C],
CB [auth B],
DA [auth C],
DB [auth B],
E [auth A],
EA [auth C],
EB [auth B],
F [auth A],
FA [auth C],
FB [auth B],
G [auth A],
GA [auth C],
GB [auth B],
GC [auth D],
H [auth A],
HA [auth C],
HB [auth B],
HC [auth D],
I [auth A],
IA [auth C],
IB [auth B],
J [auth A],
JA [auth C],
JB [auth B],
K [auth A],
KA [auth C],
KB [auth B],
L [auth A],
LA [auth C],
LB [auth B],
MA [auth C],
MB [auth B],
NA [auth C],
O [auth A],
OA [auth C],
P [auth A],
PA [auth C],
Q [auth A],
QA [auth C],
R [auth A],
RA [auth C],
S [auth A],
SA [auth C],
SB [auth D],
T [auth A],
TA [auth C],
TB [auth D],
U [auth A],
UB [auth D],
V [auth C],
VB [auth D],
W [auth C],
WB [auth D],
X [auth C],
XB [auth D],
Y [auth C],
YB [auth D],
Z [auth C],
ZB [auth D]
1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE
C44 H85 N O8 P
SNKAWJBJQDLSFF-NVKMUCNASA-O
GNP

Query on GNP



Download:Ideal Coordinates CCD File
QB [auth B]PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
C10 H17 N6 O13 P3
UQABYHGXWYXDTK-UUOKFMHZSA-N
ZN

Query on ZN



Download:Ideal Coordinates CCD File
IC [auth D],
JC [auth D]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
MG

Query on MG



Download:Ideal Coordinates CCD File
RB [auth B]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 3000 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Canadian Institutes of Health Research (CIHR)Canada--

Revision History  (Full details and data files)

  • Version 1.0: 2020-05-13
    Type: Initial release
  • Version 1.1: 2020-05-27
    Changes: Database references
  • Version 1.2: 2020-06-17
    Changes: Database references
  • Version 1.3: 2023-06-14
    Changes: Database references, Other
  • Version 1.4: 2024-05-15
    Changes: Data collection, Database references