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- PDB-4l1b: Crystal Structure of p110alpha complexed with niSH2 of p85alpha -

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Basic information

Entry
Database: PDB / ID: 4l1b
TitleCrystal Structure of p110alpha complexed with niSH2 of p85alpha
Components
  • Phosphatidylinositol 3-kinase regulatory subunit alpha
  • Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform
Keywordssignaling Protein/transferase/Inhibitor / ATP binding / signaling Protein-transferase-Inhibitor complex
Function / homology
Function and homology information


perinuclear endoplasmic reticulum membrane / regulation of toll-like receptor 4 signaling pathway / response to muscle inactivity / phosphatidylinositol kinase activity / regulation of actin filament organization / negative regulation of actin filament depolymerization / response to L-leucine / positive regulation of focal adhesion disassembly / response to butyrate / 1-phosphatidylinositol-3-kinase regulator activity ...perinuclear endoplasmic reticulum membrane / regulation of toll-like receptor 4 signaling pathway / response to muscle inactivity / phosphatidylinositol kinase activity / regulation of actin filament organization / negative regulation of actin filament depolymerization / response to L-leucine / positive regulation of focal adhesion disassembly / response to butyrate / 1-phosphatidylinositol-3-kinase regulator activity / phosphatidylinositol 3-kinase regulator activity / IRS-mediated signalling / positive regulation of endoplasmic reticulum unfolded protein response / phosphatidylinositol 3-kinase activator activity / interleukin-18-mediated signaling pathway / T follicular helper cell differentiation / phosphatidylinositol 3-kinase complex / PI3K events in ERBB4 signaling / cellular response to hydrostatic pressure / phosphatidylinositol 3-kinase regulatory subunit binding / autosome genomic imprinting / myeloid leukocyte migration / regulation of cellular respiration / neurotrophin TRKA receptor binding / Activated NTRK2 signals through PI3K / cis-Golgi network / negative regulation of fibroblast apoptotic process / Activated NTRK3 signals through PI3K / transmembrane receptor protein tyrosine kinase adaptor activity / ErbB-3 class receptor binding / phosphatidylinositol 3-kinase complex, class IB / positive regulation of protein localization to membrane / vasculature development / 1-phosphatidylinositol-4-phosphate 3-kinase activity / Signaling by cytosolic FGFR1 fusion mutants / Co-stimulation by ICOS / RHOD GTPase cycle / cardiac muscle cell contraction / phosphatidylinositol 3-kinase complex, class IA / Nephrin family interactions / RHOF GTPase cycle / kinase activator activity / Signaling by LTK in cancer / anoikis / phosphatidylinositol-3-phosphate biosynthetic process / relaxation of cardiac muscle / positive regulation of leukocyte migration / Signaling by LTK / MET activates PI3K/AKT signaling / PI3K/AKT activation / 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity / negative regulation of stress fiber assembly / RND1 GTPase cycle / phosphatidylinositol-4,5-bisphosphate 3-kinase / positive regulation of filopodium assembly / RND2 GTPase cycle / RND3 GTPase cycle / vascular endothelial growth factor signaling pathway / phosphatidylinositol 3-kinase / growth hormone receptor signaling pathway / insulin binding / 1-phosphatidylinositol-3-kinase activity / Signaling by ALK / PI-3K cascade:FGFR3 / RHOV GTPase cycle / RHOB GTPase cycle / Erythropoietin activates Phosphoinositide-3-kinase (PI3K) / natural killer cell mediated cytotoxicity / GP1b-IX-V activation signalling / negative regulation of macroautophagy / PI-3K cascade:FGFR2 / response to dexamethasone / PI-3K cascade:FGFR4 / phosphatidylinositol-mediated signaling / PI-3K cascade:FGFR1 / RHOC GTPase cycle / RHOJ GTPase cycle / intracellular glucose homeostasis / negative regulation of osteoclast differentiation / phosphatidylinositol phosphate biosynthetic process / Synthesis of PIPs at the plasma membrane / RHOU GTPase cycle / RET signaling / CDC42 GTPase cycle / negative regulation of anoikis / PI3K events in ERBB2 signaling / Interleukin-3, Interleukin-5 and GM-CSF signaling / PI3K Cascade / insulin receptor substrate binding / intercalated disc / T cell differentiation / RHOG GTPase cycle / negative regulation of cell-matrix adhesion / extrinsic apoptotic signaling pathway via death domain receptors / regulation of multicellular organism growth / protein kinase activator activity / CD28 dependent PI3K/Akt signaling / RHOA GTPase cycle / Role of LAT2/NTAL/LAB on calcium mobilization / RAC2 GTPase cycle
Similarity search - Function
Ubiquitin-like (UB roll) - #770 / Helix Hairpins - #1490 / PI3Kalpha, catalytic domain / Phosphatidylinositol 3-kinase regulatory subunit alpha, SH3 domain / PIK3R1, inter-SH2 domain / PI3K p85 subunit, C-terminal SH2 domain / PI3K regulatory subunit p85-related , inter-SH2 domain / PI3K p85 subunit, N-terminal SH2 domain / Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain / Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 4 ...Ubiquitin-like (UB roll) - #770 / Helix Hairpins - #1490 / PI3Kalpha, catalytic domain / Phosphatidylinositol 3-kinase regulatory subunit alpha, SH3 domain / PIK3R1, inter-SH2 domain / PI3K p85 subunit, C-terminal SH2 domain / PI3K regulatory subunit p85-related , inter-SH2 domain / PI3K p85 subunit, N-terminal SH2 domain / Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain / Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 4 / Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 4 / Phosphatidylinositol 3-/4-kinase, catalytic domain / Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, Domain 5 / PI3-kinase family, p85-binding domain / PI3-kinase family, p85-binding domain / Phosphatidylinositol 3-kinase, accessory domain (PIK) / Rho GTPase-activating protein domain / RhoGAP domain / Rho GTPase-activating proteins domain profile. / GTPase-activator protein for Rho-like GTPases / Phosphatidylinositol 3-kinase, adaptor-binding domain / Phosphatidylinositol 3-kinase adaptor-binding (PI3K ABD) domain profile. / PI3-kinase family, Ras-binding domain / Phosphatidylinositol 3-kinase Ras-binding (PI3K RBD) domain / PI3-kinase family, ras-binding domain / Phosphatidylinositol 3-kinase Ras-binding (PI3K RBD) domain profile. / Rho GTPase activation protein / C2 phosphatidylinositol 3-kinase-type domain / Phosphoinositide 3-kinase C2 / C2 phosphatidylinositol 3-kinase (PI3K)-type domain profile. / Phosphoinositide 3-kinase, region postulated to contain C2 domain / Phosphoinositide 3-kinase family, accessory domain (PIK domain) / Phosphoinositide 3-kinase family, accessory domain (PIK domain) / Phosphoinositide 3-kinase, accessory (PIK) domain superfamily / C2 domain / Phosphoinositide 3-kinase, accessory (PIK) domain / Phosphatidylinositol kinase / PIK helical domain profile. / SH2 domain / SHC Adaptor Protein / Phosphatidylinositol 3- and 4-kinases signature 1. / Phosphatidylinositol 3/4-kinase, conserved site / Phosphatidylinositol 3- and 4-kinases signature 2. / Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily / Phosphoinositide 3-kinase, catalytic domain / Phosphatidylinositol 3- and 4-kinase / Phosphatidylinositol 3- and 4-kinases catalytic domain profile. / Phosphatidylinositol 3-/4-kinase, catalytic domain / C2 domain superfamily / SH2 domain / Src homology 2 (SH2) domain profile. / Src homology 2 domains / SH2 domain / Src homology 3 domains / SH2 domain superfamily / SH3-like domain superfamily / Src homology 3 (SH3) domain profile. / SH3 domain / Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat / Ubiquitin-like (UB roll) / Helix Hairpins / Alpha Horseshoe / Armadillo-type fold / Ubiquitin-like domain superfamily / Roll / Protein kinase-like domain superfamily / Immunoglobulin-like / Sandwich / 2-Layer Sandwich / Orthogonal Bundle / Mainly Beta / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
Phosphatidylinositol 3-kinase regulatory subunit alpha / Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / molecular replacement / Resolution: 2.586 Å
AuthorsZhang, J. / Zhao, Y.L. / Chen, Y.Y. / Huang, M. / Jiang, F.
CitationJournal: ACS Med Chem Lett / Year: 2014
Title: Crystal Structures of PI3K alpha Complexed with PI103 and Its Derivatives: New Directions for Inhibitors Design.
Authors: Zhao, Y. / Zhang, X. / Chen, Y. / Lu, S. / Peng, Y. / Wang, X. / Guo, C. / Zhou, A. / Zhang, J. / Luo, Y. / Shen, Q. / Ding, J. / Meng, L. / Zhang, J.
History
DepositionJun 3, 2013Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 1, 2014Provider: repository / Type: Initial release
Revision 1.1Apr 1, 2015Group: Database references
Revision 1.2Nov 15, 2017Group: Refinement description / Category: software / Item: _software.classification / _software.name
Revision 1.3Sep 20, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform
B: Phosphatidylinositol 3-kinase regulatory subunit alpha
hetero molecules


Theoretical massNumber of molelcules
Total (without water)163,5933
Polymers163,4962
Non-polymers961
Water66737
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area7280 Å2
ΔGint-34 kcal/mol
Surface area56510 Å2
MethodPISA
Unit cell
Length a, b, c (Å)70.561, 136.901, 150.448
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform / PI3-kinase subunit alpha / PI3K-alpha / PI3Kalpha / PtdIns-3-kinase subunit alpha / ...PI3-kinase subunit alpha / PI3K-alpha / PI3Kalpha / PtdIns-3-kinase subunit alpha / Phosphatidylinositol 4 / 5-bisphosphate 3-kinase 110 kDa catalytic subunit alpha / PtdIns-3-kinase subunit p110-alpha / p110alpha / Phosphoinositide-3-kinase catalytic alpha polypeptide / Serine/threonine protein kinase PIK3CA


Mass: 124445.000 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PIK3CA / Plasmid: pFastBac HTB / Production host: Spodoptera frugiperda (fall armyworm) / Strain (production host): SF9
References: UniProt: P42336, phosphatidylinositol-4,5-bisphosphate 3-kinase, non-specific serine/threonine protein kinase
#2: Protein Phosphatidylinositol 3-kinase regulatory subunit alpha / PI3-kinase regulatory subunit alpha / PI3K regulatory subunit alpha / PtdIns-3-kinase regulatory ...PI3-kinase regulatory subunit alpha / PI3K regulatory subunit alpha / PtdIns-3-kinase regulatory subunit alpha / Phosphatidylinositol 3-kinase 85 kDa regulatory subunit alpha / PI3-kinase subunit p85-alpha / PtdIns-3-kinase regulatory subunit p85-alpha


Mass: 39051.469 Da / Num. of mol.: 1 / Fragment: niSH2 of p85alpha, UNP residues 318-615
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GRB1, PIK3R1 / Plasmid: pFastBac HTB / Production host: Spodoptera frugiperda (fall armyworm) / Strain (production host): SF9 / References: UniProt: P27986
#3: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 37 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.22 Å3/Da / Density % sol: 44.65 %
Crystal growTemperature: 291 K / Method: vapor diffusion, hanging drop / pH: 8.5
Details: 0.15 M Lithium sulfate, 0.1 M Tris PH 8.5, 30%(W/V) PEG 1000MME, vapor diffusion, hanging drop, temperature 291K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRF / Beamline: BL17U / Wavelength: 0.9793 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Oct 10, 2011
RadiationMonochromator: double crystal / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9793 Å / Relative weight: 1
ReflectionResolution: 2.58→50 Å / Num. all: 46123 / Num. obs: 46123 / % possible obs: 98.9 % / Observed criterion σ(F): 0 / Observed criterion σ(I): -3 / Redundancy: 4.8 % / Rmerge(I) obs: 0.135 / Rsym value: 0.135 / Net I/σ(I): 12.2
Reflection shellResolution: 2.58→2.67 Å / Redundancy: 4.4 % / Rmerge(I) obs: 0.611 / Mean I/σ(I) obs: 2.3 / Num. unique all: 4111 / Rsym value: 0.611 / % possible all: 90.2

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Phasing

PhasingMethod: molecular replacement

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Processing

Software
NameVersionClassificationNB
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
PHENIX1.8.2_1309refinement
PDB_EXTRACT3.11data extraction
ADSCQuantumdata collection
HKL-2000data reduction
HKL-2000data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB entry 3HHM

3hhm


Resolution: 2.586→47.089 Å / Occupancy max: 1 / Occupancy min: 1 / SU ML: 0.42 / σ(F): 1.34 / Phase error: 29.75 / Stereochemistry target values: ML
RfactorNum. reflection% reflectionSelection details
Rfree0.2742 2083 5.05 %RANDOM
Rwork0.2168 ---
obs0.2197 46114 99.42 %-
all-46114 --
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso max: 168.24 Å2 / Biso mean: 70.8042 Å2 / Biso min: 27.01 Å2
Refinement stepCycle: LAST / Resolution: 2.586→47.089 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms10486 0 5 37 10528
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.00410714
X-RAY DIFFRACTIONf_angle_d0.84914455
X-RAY DIFFRACTIONf_chiral_restr0.0591560
X-RAY DIFFRACTIONf_plane_restr0.0041856
X-RAY DIFFRACTIONf_dihedral_angle_d16.7754108
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Total num. of bins used: 20

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkNum. reflection all% reflection obs (%)
2.586-2.63030.3333990.28611983208291
2.6303-2.67810.33091190.266921622281100
2.6781-2.72960.37341280.269221592287100
2.7296-2.78530.39761150.262321772292100
2.7853-2.84590.3461210.254721592280100
2.8459-2.91210.2993990.243822042303100
2.9121-2.98490.36861050.258121642269100
2.9849-3.06560.34551120.260521872299100
3.0656-3.15580.32091090.255621722281100
3.1558-3.25760.30741200.260621912311100
3.2576-3.3740.34371380.239921682306100
3.374-3.50910.29951220.22622022324100
3.5091-3.66870.27631390.217721552294100
3.6687-3.86210.26271160.210522042320100
3.8621-4.10390.29061200.212821822302100
4.1039-4.42050.24271070.196522472354100
4.4205-4.8650.23991100.192422102320100
4.865-5.5680.26241080.197722502358100
5.568-7.01140.24741160.229322892405100
7.0114-47.0890.21641260.18562320244698

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