4EPY

Discovery of Small Molecules that Bind to K-Ras and Inhibit Sos-mediated Activation

PDB DOI: https://doi.org/10.2210/pdb4EPY/pdb

Classification: HYDROLASE
Organism(s): Homo sapiens
Expression System: Escherichia coli
Mutation(s): Yes

Deposited: 2012-04-17 Released: 2012-05-23
Deposition Author(s): Sun, Q., Burke, J.P., Phan, J., Burns, M.C., Olejniczak, E.T., Waterson, A.G., Lee, T., Rossanese, O.W., Fesik, S.W.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.80 Å
R-Value Free: 0.199
R-Value Work: 0.161
R-Value Observed: 0.163

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.2 of the entry. See complete history.

Literature

Discovery of Small Molecules that Bind to K-Ras and Inhibit Sos-Mediated Activation.

Sun, Q., Burke, J.P., Phan, J., Burns, M.C., Olejniczak, E.T., Waterson, A.G., Lee, T., Rossanese, O.W., Fesik, S.W.

(2012) Angew Chem Int Ed Engl 51: 6140-6143

PubMed: 22566140 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.1002/anie.201201358
Primary Citation of Related Structures:
4EPR, 4EPT, 4EPV, 4EPW, 4EPX, 4EPY

Organizational Affiliation

Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.

Macromolecule Content

Total Structure Weight: 20.18 kDa
Atom Count: 1,696
Modelled Residue Count: 170
Deposited Residue Count: 170
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GTPase KRas	A	170	Homo sapiens	Mutation(s): 2 Gene Names: KRAS, KRAS2, RASK2 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 Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P01116
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
GDP Query on GDP Download Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	GUANOSINE-5'-DIPHOSPHATE C₁₀ H₁₅ N₅ O₁₁ P₂ QGWNDRXFNXRZMB-UUOKFMHZSA-N		Interactions Focus chain B [auth A]
0QY Query on 0QY Download Ideal Coordinates CCD File SDF format, chain D [auth A] MOL2 format, chain D [auth A] mmCIF format, chain D [auth A]	D [auth A]	N-[2-(1H-indol-3-ylmethyl)-1H-benzimidazol-5-yl]-L-prolinamide C₂₁ H₂₁ N₅ O FSUGJBWDOIVSMH-SFHVURJKSA-N		Interactions Focus chain D [auth A]
MG Query on MG Download Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N		Interactions Focus chain C [auth A]

Binding Affinity Annotations
ID	Source	Binding Affinity
0QY	PDBBind: 4EPY	Kd: 3.40e+5 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.80 Å
R-Value Free: 0.199
R-Value Work: 0.161
R-Value Observed: 0.163
Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 38.982	α = 90
b = 41.481	β = 90
c = 91.663	γ = 90

Software Package:

Software Name	Purpose
PROTEUM PLUS	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

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Ligand Structure Quality Assessment

Entry History

Deposition Data

Released Date: 2012-05-23

Deposition Author(s):

Revision History (Full details and data files)

Version 1.0: 2012-05-23
Type: Initial release
Version 1.1: 2012-07-25
Changes: Database references
Version 1.2: 2023-09-13
Changes: Data collection, Database references, Derived calculations, Refinement description