6MCP

L. pneumophila effector kinase LegK7 (AMP-PNP bound) in complex with human MOB1A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.196 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.5 of the entry. See complete history


Literature

TheLegionellakinase LegK7 exploits the Hippo pathway scaffold protein MOB1A for allostery and substrate phosphorylation.

Lee, P.C.Beyrakhova, K.Xu, C.Boniecki, M.T.Lee, M.H.Onu, C.J.Grishin, A.M.Machner, M.P.Cygler, M.

(2020) Proc Natl Acad Sci U S A 117: 14433-14443

  • DOI: https://doi.org/10.1073/pnas.2000497117
  • Primary Citation of Related Structures:  
    6MCP, 6MCQ

  • PubMed Abstract: 

    During infection, the bacterial pathogen Legionella pneumophila manipulates a variety of host cell signaling pathways, including the Hippo pathway which controls cell proliferation and differentiation in eukaryotes. Our previous studies revealed that L. pneumophila encodes the effector kinase LegK7 which phosphorylates MOB1A, a highly conserved scaffold protein of the Hippo pathway. Here, we show that MOB1A, in addition to being a substrate of LegK7, also functions as an allosteric activator of its kinase activity. A crystallographic analysis of the LegK7-MOB1A complex revealed that the N-terminal half of LegK7 is structurally similar to eukaryotic protein kinases, and that MOB1A directly binds to the LegK7 kinase domain. Substitution of interface residues critical for complex formation abrogated allosteric activation of LegK7 both in vitro and within cells and diminished MOB1A phosphorylation. Importantly, the N-terminal extension (NTE) of MOB1A not only regulated complex formation with LegK7 but also served as a docking site for downstream substrates such as the transcriptional coregulator YAP1. Deletion of the NTE from MOB1A or addition of NTE peptides as binding competitors attenuated YAP1 recruitment to and phosphorylation by LegK7. By providing mechanistic insight into the formation and regulation of the LegK7-MOB1A complex, our study unravels a sophisticated molecular mimicry strategy that is used by L. pneumophila to take control of the host cell Hippo pathway.


  • Organizational Affiliation

    Division of Molecular and Cellular Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD 20892.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
LegK7
A, C
523Legionella pneumophila subsp. pneumophila str. Philadelphia 1Mutation(s): 0 
Gene Names: lpg1924
EC: 2.7.11.1
UniProt
Find proteins for Q5ZU83 (Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513))
Explore Q5ZU83 
Go to UniProtKB:  Q5ZU83
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5ZU83
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
MOB kinase activator 1A
B, D
187Homo sapiensMutation(s): 0 
Gene Names: MOB1AC2orf6MOB4BMOBK1BMOBKL1B
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H8S9 (Homo sapiens)
Explore Q9H8S9 
Go to UniProtKB:  Q9H8S9
PHAROS:  Q9H8S9
GTEx:  ENSG00000114978 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9H8S9
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP

Download Ideal Coordinates CCD File 
CA [auth C]PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
P6G
Query on P6G

Download Ideal Coordinates CCD File 
J [auth A],
K [auth A],
R [auth B],
U [auth C]
HEXAETHYLENE GLYCOL
C12 H26 O7
IIRDTKBZINWQAW-UHFFFAOYSA-N
PG4
Query on PG4

Download Ideal Coordinates CCD File 
E [auth A],
EA [auth D],
O [auth A]
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
PEG
Query on PEG

Download Ideal Coordinates CCD File 
AA [auth C]
BA [auth C]
F [auth A]
FA [auth D]
G [auth A]
AA [auth C],
BA [auth C],
F [auth A],
FA [auth D],
G [auth A],
GA [auth D],
H [auth A],
I [auth A],
L [auth A],
M [auth A],
N [auth A],
Q [auth B],
S [auth B],
V [auth C],
W [auth C],
X [auth C],
Y [auth C],
Z [auth C]
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
DA [auth D],
P [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
MN
Query on MN

Download Ideal Coordinates CCD File 
T [auth C]MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.196 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.86α = 90
b = 112.43β = 105.58
c = 155.22γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Canadian Institutes of Health Research (CIHR)CanadaMOP-48370

Revision History  (Full details and data files)

  • Version 1.0: 2019-09-04
    Type: Initial release
  • Version 1.1: 2020-01-08
    Changes: Author supporting evidence
  • Version 1.2: 2020-06-10
    Changes: Database references
  • Version 1.3: 2020-06-24
    Changes: Database references
  • Version 1.4: 2020-07-08
    Changes: Database references
  • Version 1.5: 2023-10-11
    Changes: Data collection, Database references, Derived calculations, Refinement description