- PDB-7l6w: SFX structure of the MyD88 TIR domain higher-order assembly -
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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
regulation of chemokine (C-X-C motif) ligand 1 production / MyD88 deficiency (TLR5) / TIR domain binding / ATP-dependent histone chaperone activity / Toll binding / toll-like receptor 5 signaling pathway / induced systemic resistance / regulation of chemokine (C-X-C motif) ligand 2 production / neutrophil-mediated killing of bacterium / leukocyte activation involved in inflammatory response ...regulation of chemokine (C-X-C motif) ligand 1 production / MyD88 deficiency (TLR5) / TIR domain binding / ATP-dependent histone chaperone activity / Toll binding / toll-like receptor 5 signaling pathway / induced systemic resistance / regulation of chemokine (C-X-C motif) ligand 2 production / neutrophil-mediated killing of bacterium / leukocyte activation involved in inflammatory response / response to molecule of fungal origin / positive regulation of lymphocyte proliferation / response to peptidoglycan / toll-like receptor 8 signaling pathway / positive regulation of interleukin-23 production / regulation of neutrophil migration / IRAK4 deficiency (TLR5) / establishment of endothelial intestinal barrier / MyD88 dependent cascade initiated on endosome / TRAF6 mediated induction of NFkB and MAP kinases upon TLR7/8 or 9 activation / MyD88 cascade initiated on plasma membrane / cellular response to oxidised low-density lipoprotein particle stimulus / Toll signaling pathway / Toll-like receptor binding / DEx/H-box helicases activate type I IFN and inflammatory cytokines production / toll-like receptor TLR6:TLR2 signaling pathway / interleukin-33-mediated signaling pathway / neutrophil activation involved in immune response / microglia differentiation / RIP-mediated NFkB activation via ZBP1 / interleukin-1 receptor binding / positive regulation of cytokine production involved in inflammatory response / MyD88 deficiency (TLR2/4) / death receptor binding / interleukin-1-mediated signaling pathway / IRAK4 deficiency (TLR2/4) / extrinsic component of cytoplasmic side of plasma membrane / positive regulation of macrophage cytokine production / MyD88-dependent toll-like receptor signaling pathway / 3'-UTR-mediated mRNA stabilization / MyD88:MAL(TIRAP) cascade initiated on plasma membrane / toll-like receptor 4 signaling pathway / extrinsic component of plasma membrane / skin development / type I interferon-mediated signaling pathway / response to amine / defense response to protozoan / positive regulation of NLRP3 inflammasome complex assembly / positive regulation of interleukin-17 production / immunoglobulin mediated immune response / positive regulation of type I interferon production / phagocytosis / response to amino acid / positive regulation of chemokine production / JNK cascade / signaling adaptor activity / p75NTR recruits signalling complexes / response to interleukin-1 / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / lipopolysaccharide-mediated signaling pathway / positive regulation of interleukin-1 beta production / positive regulation of interleukin-8 production / positive regulation of smooth muscle cell proliferation / positive regulation of JNK cascade / positive regulation of NF-kappaB transcription factor activity / positive regulation of interleukin-6 production / cellular response to mechanical stimulus / Interleukin-1 signaling / positive regulation of tumor necrosis factor production / PIP3 activates AKT signaling / ER-Phagosome pathway / cellular response to lipopolysaccharide / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / regulation of inflammatory response / response to ethanol / defense response to virus / molecular adaptor activity / gene expression / positive regulation of canonical NF-kappaB signal transduction / cell surface receptor signaling pathway / endosome membrane / defense response to Gram-positive bacterium / defense response to bacterium / innate immune response / apoptotic process / positive regulation of gene expression / 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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