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- PDB-8xmk: Local refinement of SRCR5-9 domains -

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Basic information

Entry
Database: PDB / ID: 8xmk
TitleLocal refinement of SRCR5-9 domains
ComponentsScavenger receptor cysteine-rich type 1 protein M130
KeywordsENDOCYTOSIS / Homotrimer / receptor
Function / homology
Function and homology information


CD163 mediating an anti-inflammatory response / scavenger receptor activity / Scavenging of heme from plasma / acute-phase response / endocytic vesicle membrane / scaffold protein binding / external side of plasma membrane / extracellular region / plasma membrane / cytosol
Similarity search - Function
SRCR domain signature. / Scavenger receptor cysteine-rich domain / SRCR domain profile. / SRCR-like domain superfamily / Scavenger receptor Cys-rich / SRCR domain
Similarity search - Domain/homology
Scavenger receptor cysteine-rich type 1 protein M130
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.03 Å
AuthorsXu, H. / Su, X.D.
Funding support China, 1items
OrganizationGrant numberCountry
Ministry of Science and Technology (MoST, China)2021YFC2301400 China
CitationJournal: To Be Published
Title: Local refinement of SRCR5-9 domains
Authors: Xu, H. / Su, X.D.
History
DepositionDec 27, 2023Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Jan 1, 2025Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
D: Scavenger receptor cysteine-rich type 1 protein M130
E: Scavenger receptor cysteine-rich type 1 protein M130
F: Scavenger receptor cysteine-rich type 1 protein M130
hetero molecules


Theoretical massNumber of molelcules
Total (without water)329,52726
Polymers327,5193
Non-polymers2,00923
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Scavenger receptor cysteine-rich type 1 protein M130 / Hemoglobin scavenger receptor


Mass: 109172.922 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD163, M130 / Production host: Homo sapiens (human) / References: UniProt: Q86VB7
#2: 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.: 6 / 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
#3: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 17 / Source method: obtained synthetically / Formula: Ca
Has ligand of interestN
Has protein modificationY

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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: CD163 homotrimer / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.2
SpecimenEmbedding 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: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.20.1_4487: / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.03 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 432933 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00312070
ELECTRON MICROSCOPYf_angle_d0.47416351
ELECTRON MICROSCOPYf_dihedral_angle_d4.5981658
ELECTRON MICROSCOPYf_chiral_restr0.0431734
ELECTRON MICROSCOPYf_plane_restr0.0042146

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