8DCX

PI 3-kinase alpha with nanobody 3-159


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Nanobodies and chemical cross-links advance the structural and functional analysis of PI3K alpha.

Hart, J.R.Liu, X.Pan, C.Liang, A.Ueno, L.Xu, Y.Quezada, A.Zou, X.Yang, S.Zhou, Q.Schoonooghe, S.Hassanzadeh-Ghassabeh, G.Xia, T.Shui, W.Yang, D.Vogt, P.K.Wang, M.W.

(2022) Proc Natl Acad Sci U S A 119: e2210769119-e2210769119

  • DOI: https://doi.org/10.1073/pnas.2210769119
  • Primary Citation of Related Structures:  
    8DCP, 8DCX, 8DD4, 8DD8

  • PubMed Abstract: 

    Nanobodies and chemical cross-linking were used to gain information on the identity and positions of flexible domains of PI3Kα. The application of chemical cross-linking mass spectrometry (CXMS) facilitated the identification of the p85 domains BH, cSH2, and SH3 as well as their docking positions on the PI3Kα catalytic core. Binding of individual nanobodies to PI3Kα induced activation or inhibition of enzyme activity and caused conformational changes that could be correlated with enzyme function. Binding of nanobody Nb3-126 to the BH domain of p85α substantially improved resolution for parts of the PI3Kα complex, and binding of nanobody Nb3-159 induced a conformation of PI3Kα that is distinct from known PI3Kα structures. The analysis of CXMS data also provided mechanistic insights into the molecular underpinning of the flexibility of PI3Kα.


  • Organizational Affiliation

    School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan 430074, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform1,096Homo sapiensMutation(s): 0 
Gene Names: PIK3CA
EC: 2.7.1.153 (PDB Primary Data), 2.7.11.1 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P42336 (Homo sapiens)
Explore P42336 
Go to UniProtKB:  P42336
PHAROS:  P42336
GTEx:  ENSG00000121879 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP42336
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Phosphatidylinositol 3-kinase regulatory subunit alpha723Homo sapiensMutation(s): 0 
Gene Names: PIK3R1GRB1
UniProt & NIH Common Fund Data Resources
Find proteins for P27986 (Homo sapiens)
Explore P27986 
Go to UniProtKB:  P27986
PHAROS:  P27986
GTEx:  ENSG00000145675 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP27986
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.19.2-4158

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesR35 CA197582
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesR50 CA243899
National Natural Science Foundation of China (NSFC)China81872915
National Natural Science Foundation of China (NSFC)China82073904
National Natural Science Foundation of China (NSFC)China82121005
National Natural Science Foundation of China (NSFC)China81973373
National Natural Science Foundation of China (NSFC)China31971362
National Natural Science Foundation of China (NSFC)China32171439
National Natural Science Foundation of China (NSFC)China21704064
Other government2018ZX09735 001
Other government2018ZX09711002 002 005
Other government2021ZD0203400
Other government2018YFA0507000
Other privateNNCAS 2017 1 CC
Other governmentZDKJ2021028

Revision History  (Full details and data files)

  • Version 1.0: 2022-09-21
    Type: Initial release