- PDB-7l6w: SFX structure of the MyD88 TIR domain higher-order assembly -
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Open data
ID or keywords:
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Basic information
Entry
Database: PDB / ID: 7l6w
Title
SFX structure of the MyD88 TIR domain higher-order assembly
Components
Myeloid differentiation primary response protein MyD88
Keywords
PROTEIN BINDING / SFX / serial femtosecond crystallography / MyD88 / TIR domain / higher-order assembly
Function / homology
Function and homology information
MyD88 deficiency (TLR5) / Toll binding / toll-like receptor 5 signaling pathway / ATP-dependent histone chaperone activity / TIR domain binding / toll-like receptor 8 signaling pathway / positive regulation of interleukin-23 production / IRAK4 deficiency (TLR5) / DEx/H-box helicases activate type I IFN and inflammatory cytokines production / MyD88 dependent cascade initiated on endosome ...MyD88 deficiency (TLR5) / Toll binding / toll-like receptor 5 signaling pathway / ATP-dependent histone chaperone activity / TIR domain binding / toll-like receptor 8 signaling pathway / positive regulation of interleukin-23 production / IRAK4 deficiency (TLR5) / DEx/H-box helicases activate type I IFN and inflammatory cytokines production / MyD88 dependent cascade initiated on endosome / cellular response to oxidised low-density lipoprotein particle stimulus / TRAF6 mediated induction of NFkB and MAP kinases upon TLR7/8 or 9 activation / Toll-like receptor binding / MyD88 cascade initiated on plasma membrane / toll-like receptor TLR6:TLR2 signaling pathway / Toll signaling pathway / interleukin-33-mediated signaling pathway / regulation of MAP kinase activity / NLRP3 inflammasome complex assembly / RIP-mediated NFkB activation via ZBP1 / death receptor binding / MyD88 deficiency (TLR2/4) / interleukin-1 receptor binding / response to amine / interleukin-1-mediated signaling pathway / toll-like receptor 4 signaling pathway / 3'-UTR-mediated mRNA stabilization / positive regulation of cytokine production involved in inflammatory response / IRAK4 deficiency (TLR2/4) / skin development / extrinsic component of plasma membrane / MyD88:MAL(TIRAP) cascade initiated on plasma membrane / MyD88-dependent toll-like receptor signaling pathway / defense response to protozoan / extrinsic component of cytoplasmic side of plasma membrane / toll-like receptor signaling pathway / type I interferon-mediated signaling pathway / positive regulation of interleukin-17 production / positive regulation of NLRP3 inflammasome complex assembly / response to amino acid / JNK cascade / phagocytosis / canonical NF-kappaB signal transduction / positive regulation of type I interferon production / positive regulation of smooth muscle cell proliferation / signaling adaptor activity / response to interleukin-1 / p75NTR recruits signalling complexes / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / positive regulation of interleukin-8 production / positive regulation of interleukin-1 beta production / cellular response to mechanical stimulus / positive regulation of interleukin-6 production / gene expression / Interleukin-1 signaling / PIP3 activates AKT signaling / regulation of inflammatory response / cellular response to lipopolysaccharide / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / ER-Phagosome pathway / defense response to virus / molecular adaptor activity / response to ethanol / positive regulation of canonical NF-kappaB signal transduction / cell surface receptor signaling pathway / defense response to bacterium / endosome membrane / defense response to Gram-positive bacterium / innate immune response / positive regulation of gene expression / apoptotic process / cell surface / signal transduction / positive regulation of transcription by RNA polymerase II / protein-containing complex / identical protein binding / nucleus / plasma membrane / cytosol / cytoplasm Similarity search - Function
Myeloid differentiation primary response protein MyD88 / MyD88, death domain / TIR domain / Death domain profile. / DEATH domain, found in proteins involved in cell death (apoptosis). / Death domain / Death domain / Toll - interleukin 1 - resistance / TIR domain profile. / Toll/interleukin-1 receptor homology (TIR) domain ...Myeloid differentiation primary response protein MyD88 / MyD88, death domain / TIR domain / Death domain profile. / DEATH domain, found in proteins involved in cell death (apoptosis). / Death domain / Death domain / Toll - interleukin 1 - resistance / TIR domain profile. / Toll/interleukin-1 receptor homology (TIR) domain / Toll/interleukin-1 receptor homology (TIR) domain superfamily / Death-like domain superfamily Similarity search - Domain/homology
Journal: Nat Commun / Year: 2021 Title: MyD88 TIR domain higher-order assembly interactions revealed by microcrystal electron diffraction and serial femtosecond crystallography. Authors: Max T B Clabbers / Susannah Holmes / Timothy W Muusse / Parimala R Vajjhala / Sara J Thygesen / Alpeshkumar K Malde / Dominic J B Hunter / Tristan I Croll / Leonie Flueckiger / Jeffrey D ...Authors: Max T B Clabbers / Susannah Holmes / Timothy W Muusse / Parimala R Vajjhala / Sara J Thygesen / Alpeshkumar K Malde / Dominic J B Hunter / Tristan I Croll / Leonie Flueckiger / Jeffrey D Nanson / Md Habibur Rahaman / Andrew Aquila / Mark S Hunter / Mengning Liang / Chun Hong Yoon / Jingjing Zhao / Nadia A Zatsepin / Brian Abbey / Emma Sierecki / Yann Gambin / Katryn J Stacey / Connie Darmanin / Bostjan Kobe / Hongyi Xu / Thomas Ve / Abstract: MyD88 and MAL are Toll-like receptor (TLR) adaptors that signal to induce pro-inflammatory cytokine production. We previously observed that the TIR domain of MAL (MAL) forms filaments in vitro and ...MyD88 and MAL are Toll-like receptor (TLR) adaptors that signal to induce pro-inflammatory cytokine production. We previously observed that the TIR domain of MAL (MAL) forms filaments in vitro and induces formation of crystalline higher-order assemblies of the MyD88 TIR domain (MyD88). These crystals are too small for conventional X-ray crystallography, but are ideally suited to structure determination by microcrystal electron diffraction (MicroED) and serial femtosecond crystallography (SFX). Here, we present MicroED and SFX structures of the MyD88 assembly, which reveal a two-stranded higher-order assembly arrangement of TIR domains analogous to that seen previously for MAL. We demonstrate via mutagenesis that the MyD88 assembly interfaces are critical for TLR4 signaling in vivo, and we show that MAL promotes unidirectional assembly of MyD88. Collectively, our studies provide structural and mechanistic insight into TLR signal transduction and allow a direct comparison of the MicroED and SFX techniques.
Mass: 18.015 Da / Num. of mol.: 22 / Source method: isolated from a natural source / Formula: H2O
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Experimental details
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Experiment
Experiment
Method: X-RAY DIFFRACTION / Number of used crystals: 1029868
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Sample preparation
Crystal
Density Matthews: 2.31 Å3/Da / Density % sol: 46.65 %
Crystal grow
Temperature: 310 K / Method: batch mode Details: MAL TIR (0.5-3 micromolar) was incubated with MyD88 TIR domain (60-100 micromolar) in 10 millimolar HEPES at pH 7.5-8, 150 millimolar NaCl at 298-310K.
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Data collection
Diffraction
Mean temperature: 300 K / Ambient temp details: Room temperature / Serial crystal experiment: Y
Diffraction source
Source: FREE ELECTRON LASER / Site: SLAC LCLS / Beamline: CXI / Wavelength: 1.314 Å
Resolution: 2.3→30.94 Å / Cor.coef. Fo:Fc: 0.936 / Cor.coef. Fo:Fc free: 0.894 / SU ML: 0.409 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R Free: 0.302 / Stereochemistry target values: MAXIMUM LIKELIHOOD Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : WITH TLS ADDED
Rfactor
Num. reflection
% reflection
Selection details
Rfree
0.288
712
10.1 %
RANDOM
Rwork
0.2327
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obs
0.2384
6352
94.72 %
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Solvent computation
Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
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