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- PDB-7y1t: Complex of integrin alphaV/beta8 and L-TGF-beta1 at a ratio of 1:2 -

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Basic information

Entry
Database: PDB / ID: 7y1t
TitleComplex of integrin alphaV/beta8 and L-TGF-beta1 at a ratio of 1:2
Components
  • Integrin alpha-V
  • Integrin beta-8
  • Transforming growth factor beta-1 proprotein
KeywordsSIGNALING PROTEIN
Function / homology
Function and homology information


ganglioside metabolic process / adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains / regulation of interleukin-23 production / branch elongation involved in mammary gland duct branching / regulation of branching involved in mammary gland duct morphogenesis / positive regulation of microglia differentiation / Influenza Virus Induced Apoptosis / frontal suture morphogenesis / negative regulation of skeletal muscle tissue development / regulation of enamel mineralization ...ganglioside metabolic process / adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains / regulation of interleukin-23 production / branch elongation involved in mammary gland duct branching / regulation of branching involved in mammary gland duct morphogenesis / positive regulation of microglia differentiation / Influenza Virus Induced Apoptosis / frontal suture morphogenesis / negative regulation of skeletal muscle tissue development / regulation of enamel mineralization / regulatory T cell differentiation / regulation of cartilage development / TGFBR2 MSI Frameshift Mutants in Cancer / regulation of blood vessel remodeling / tolerance induction to self antigen / regulation of striated muscle tissue development / negative regulation of natural killer cell mediated cytotoxicity directed against tumor cell target / regulation of protein import into nucleus / embryonic liver development / columnar/cuboidal epithelial cell maturation / type III transforming growth factor beta receptor binding / positive regulation of odontogenesis / Langerhans cell differentiation / negative regulation of hyaluronan biosynthetic process / positive regulation of cardiac muscle cell differentiation / myofibroblast differentiation / positive regulation of receptor signaling pathway via STAT / connective tissue replacement involved in inflammatory response wound healing / positive regulation of exit from mitosis / extracellular matrix assembly / integrin alphav-beta6 complex / integrin alphav-beta8 complex / hard palate development / transforming growth factor beta production / negative regulation of macrophage cytokine production / negative regulation of entry of bacterium into host cell / integrin alphav-beta5 complex / odontoblast differentiation / : / TGFBR2 Kinase Domain Mutants in Cancer / opsonin binding / positive regulation of smooth muscle cell differentiation / positive regulation of isotype switching to IgA isotypes / positive regulation of mesenchymal stem cell proliferation / integrin alphav-beta1 complex / mammary gland branching involved in thelarche / SMAD2/3 Phosphorylation Motif Mutants in Cancer / TGFBR1 KD Mutants in Cancer / membrane protein intracellular domain proteolysis / heart valve morphogenesis / Cross-presentation of particulate exogenous antigens (phagosomes) / retina vasculature development in camera-type eye / extracellular matrix protein binding / response to laminar fluid shear stress / positive regulation of primary miRNA processing / positive regulation of vasculature development / bronchiole development / hyaluronan catabolic process / regulation of transforming growth factor beta receptor signaling pathway / ATP biosynthetic process / Laminin interactions / receptor catabolic process / positive regulation of branching involved in ureteric bud morphogenesis / positive regulation of extracellular matrix assembly / lens fiber cell differentiation / placenta blood vessel development / negative regulation of extracellular matrix disassembly / integrin alphav-beta3 complex / negative regulation of lipoprotein metabolic process / type II transforming growth factor beta receptor binding / TGFBR1 LBD Mutants in Cancer / oligodendrocyte development / alphav-beta3 integrin-PKCalpha complex / entry into host cell by a symbiont-containing vacuole / response to salt / germ cell migration / negative regulation of biomineral tissue development / endoderm development / positive regulation of mononuclear cell migration / type I transforming growth factor beta receptor binding / alphav-beta3 integrin-HMGB1 complex / positive regulation of chemotaxis / phospholipid homeostasis / negative regulation of lipid transport / negative regulation of myoblast differentiation / positive regulation of endothelial cell apoptotic process / positive regulation of vascular permeability / negative regulation of low-density lipoprotein receptor activity / response to vitamin D / cell-cell junction organization / regulation of phagocytosis / Elastic fibre formation / positive regulation of regulatory T cell differentiation / alphav-beta3 integrin-IGF-1-IGF1R complex / transforming growth factor beta binding / response to cholesterol / digestive tract development / negative regulation of interleukin-17 production / surfactant homeostasis / deubiquitinase activator activity
Similarity search - Function
Transforming growth factor beta-1 proprotein / Transforming growth factor-beta / TGF-beta, propeptide / TGF-beta propeptide / Transforming growth factor beta, conserved site / TGF-beta family signature. / Transforming growth factor-beta-related / Transforming growth factor-beta (TGF-beta) family / Transforming growth factor-beta, C-terminal / Transforming growth factor beta like domain ...Transforming growth factor beta-1 proprotein / Transforming growth factor-beta / TGF-beta, propeptide / TGF-beta propeptide / Transforming growth factor beta, conserved site / TGF-beta family signature. / Transforming growth factor-beta-related / Transforming growth factor-beta (TGF-beta) family / Transforming growth factor-beta, C-terminal / Transforming growth factor beta like domain / TGF-beta family profile. / : / Integrin alpha Ig-like domain 3 / Integrin beta subunit, VWA domain / Integrin beta subunit / Integrin beta N-terminal / Integrin beta chain VWA domain / Integrin plexin domain / Integrins beta chain cysteine-rich domain signature. / Integrin beta subunits (N-terminal portion of extracellular region) / Integrin alpha cytoplasmic region / EGF-like domain, extracellular / EGF-like domain / Integrin alpha-2 / Integrin alpha Ig-like domain 1 / : / Integrin alpha Ig-like domain 2 / Integrin alpha chain / Integrin alpha beta-propellor / Integrin alpha chain, C-terminal cytoplasmic region, conserved site / Integrins alpha chain signature. / FG-GAP repeat profile. / Integrin alpha (beta-propellor repeats). / FG-GAP repeat / FG-GAP repeat / Integrin alpha, N-terminal / Integrin domain superfamily / Cystine-knot cytokine / PSI domain / domain found in Plexins, Semaphorins and Integrins / von Willebrand factor A-like domain superfamily / EGF-like domain signature 2. / EGF-like domain signature 1. / EGF-like domain
Similarity search - Domain/homology
: / Transforming growth factor beta-1 proprotein / Integrin alpha-V / Integrin beta-8
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.24 Å
AuthorsDuan, Z. / Zhang, Z.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32171201 China
CitationJournal: Nat Commun / Year: 2022
Title: Specificity of TGF-β1 signal designated by LRRC33 and integrin αβ.
Authors: Zelin Duan / Xuezhen Lin / Lixia Wang / Qiuxin Zhen / Yuefeng Jiang / Chuxin Chen / Jing Yang / Chia-Hsueh Lee / Yan Qin / Ying Li / Bo Zhao / Jianchuan Wang / Zhe Zhang /
Abstract: Myeloid lineage cells present the latent form of transforming growth factor-β1 (L-TGF-β1) to the membrane using an anchor protein LRRC33. Integrin αβ activates extracellular L-TGF-β1 to trigger ...Myeloid lineage cells present the latent form of transforming growth factor-β1 (L-TGF-β1) to the membrane using an anchor protein LRRC33. Integrin αβ activates extracellular L-TGF-β1 to trigger the downstream signaling functions. However, the mechanism designating the specificity of TGF-β1 presentation and activation remains incompletely understood. Here, we report cryo-EM structures of human L-TGF-β1/LRRC33 and integrin αβ/L-TGF-β1 complexes. Combined with biochemical and cell-based analyses, we demonstrate that LRRC33 only presents L-TGF-β1 but not the -β2 or -β3 isoforms due to difference of key residues on the growth factor domains. Moreover, we reveal a 2:2 binding mode of integrin αβ and L-TGF-β1, which shows higher avidity and more efficient L-TGF-β1 activation than previously reported 1:2 binding mode. We also uncover that the disulfide-linked loop of the integrin subunit β determines its exquisite affinity to L-TGF-β1. Together, our findings provide important insights into the specificity of TGF-β1 signaling achieved by LRRC33 and integrin αβ.
History
DepositionJun 8, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Aug 31, 2022Provider: repository / Type: Initial release
Revision 1.1Sep 7, 2022Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Integrin alpha-V
B: Integrin beta-8
D: Transforming growth factor beta-1 proprotein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)169,75118
Polymers165,8403
Non-polymers3,91115
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 3 types, 3 molecules ABD

#1: Protein Integrin alpha-V / Vitronectin receptor / Vitronectin receptor subunit alpha


Mass: 69812.711 Da / Num. of mol.: 1 / Mutation: M401C
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ITGAV / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: P06756
#2: Protein Integrin beta-8


Mass: 53017.355 Da / Num. of mol.: 1 / Mutation: V259C
Source method: isolated from a genetically manipulated source
Details: The first 21 residues (MDMRVPAQLLGLLLLWFSGVL) are signal peptides.
Source: (gene. exp.) Homo sapiens (human) / Gene: ITGB8 / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: P26012
#3: Protein Transforming growth factor beta-1 proprotein


Mass: 43010.402 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: The first 16 residues (MPLLLLLPLLWAGALA) are signal peptides.
Source: (gene. exp.) Homo sapiens (human) / Gene: TGFB1, TGFB / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: P01137

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Sugars , 4 types, 9 molecules

#4: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 627.594 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,3,2/[a2122h-1b_1-5_2*NCC/3=O]/1-1-1/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#5: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#6: Polysaccharide alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-4)-[alpha-D-mannopyranose-(1-3)]beta-D- ...alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-4)-[alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 1072.964 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-6DManpa1-4[DManpa1-3]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/3,6,5/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3-3/a4-b1_b4-c1_c3-d1_c4-e1_e6-f1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(4+1)][a-D-Manp]{[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#7: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 2 types, 6 molecules

#8: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: Ca / Feature type: SUBJECT OF INVESTIGATION
#9: Chemical ChemComp-MN / MANGANESE (II) ION


Mass: 54.938 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mn

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Details

Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Complex of integrin alphaV/beta8 and L-TGF-beta1 at a ratio of 1:2
Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT
Molecular weightValue: 0.21 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human) / Cell: HEK293
Buffer solutionpH: 7.5
SpecimenConc.: 3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1200 nm / Nominal defocus min: 800 nm
Image recordingElectron dose: 60 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

EM softwareName: SerialEM / Category: image acquisition
CTF correctionType: NONE
3D reconstructionResolution: 3.24 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 305011 / Symmetry type: POINT
Atomic model buildingProtocol: OTHER

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