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- PDB-9l23: cryo-EM structure of Vitamin K-dependent gamma-carboxylase comple... -

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Basic information

Entry
Database: PDB / ID: 9l23
Titlecryo-EM structure of Vitamin K-dependent gamma-carboxylase complexed with Osteocalcin
Components
  • Osteocalcin
  • Vitamin K-dependent gamma-carboxylase
KeywordsMEMBRANE PROTEIN
Function / homology
Function and homology information


response to hydroxyisoflavone / hydroxyapatite binding / structural constituent of bone / peptidyl-glutamate 4-carboxylase / gamma-glutamyl carboxylase activity / negative regulation of testosterone biosynthetic process / cellular response to zinc ion starvation / negative regulation of bone development / response to macrophage colony-stimulating factor / Defective gamma-carboxylation of F9 ...response to hydroxyisoflavone / hydroxyapatite binding / structural constituent of bone / peptidyl-glutamate 4-carboxylase / gamma-glutamyl carboxylase activity / negative regulation of testosterone biosynthetic process / cellular response to zinc ion starvation / negative regulation of bone development / response to macrophage colony-stimulating factor / Defective gamma-carboxylation of F9 / vitamin binding / vitamin K metabolic process / regulation of testosterone biosynthetic process / response to vitamin K / negative regulation of neurotransmitter secretion / regulation of osteoclast differentiation / cellular response to vitamin D / regulation of bone mineralization / type B pancreatic cell proliferation / regulation of bone resorption / osteoblast development / response to vitamin D / response to zinc ion / positive regulation of neurotransmitter secretion / response to testosterone / response to gravity / bone mineralization / RUNX2 regulates osteoblast differentiation / response to mechanical stimulus / Transport of gamma-carboxylated protein precursors from the endoplasmic reticulum to the Golgi apparatus / Gamma-carboxylation of protein precursors / Removal of aminoterminal propeptides from gamma-carboxylated proteins / regulation of cellular response to insulin stimulus / response to glucocorticoid / protein maturation / response to activity / skeletal system development / stem cell differentiation / hormone activity / bone development / brain development / protein modification process / cellular response to growth factor stimulus / Golgi lumen / response to estrogen / cognition / cellular response to insulin stimulus / blood coagulation / osteoblast differentiation / glucose homeostasis / response to ethanol / perikaryon / vesicle / learning or memory / cell adhesion / endoplasmic reticulum lumen / response to xenobiotic stimulus / calcium ion binding / dendrite / endoplasmic reticulum membrane / structural molecule activity / extracellular space / extracellular region / membrane / cytoplasm
Similarity search - Function
Osteocalcin / Osteocalcin/matrix Gla protein / Vitamin K-dependent gamma-carboxylase / HTTM / : / : / HTTM domain / Vitamin K-dependent gamma-carboxylase, lumenal domain / Horizontally Transferred TransMembrane Domain / RmlC-like cupin domain superfamily ...Osteocalcin / Osteocalcin/matrix Gla protein / Vitamin K-dependent gamma-carboxylase / HTTM / : / : / HTTM domain / Vitamin K-dependent gamma-carboxylase, lumenal domain / Horizontally Transferred TransMembrane Domain / RmlC-like cupin domain superfamily / Gamma-carboxyglutamic acid-rich (GLA) domain / Gamma-carboxyglutamic acid-rich (GLA) domain superfamily / Vitamin K-dependent carboxylation domain. / Gla domain profile. / Domain containing Gla (gamma-carboxyglutamate) residues. / RmlC-like jelly roll fold
Similarity search - Domain/homology
: / BICARBONATE ION / CHOLESTEROL / CARBON DIOXIDE / 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine / CHOLESTEROL HEMISUCCINATE / Osteocalcin / Vitamin K-dependent gamma-carboxylase
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.62 Å
AuthorsYao, D. / Wu, K. / Lan, P.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: To Be Published
Title: cryo-EM structure of Vitamin K-dependent gamma-carboxylase complexed with Osteocalcin
Authors: Yao, D. / Wu, K. / Lan, P.
History
DepositionDec 16, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Oct 22, 2025Provider: repository / Type: Initial release
Revision 1.0Oct 22, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Oct 22, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Oct 22, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Oct 22, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Oct 22, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Oct 22, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Vitamin K-dependent gamma-carboxylase
B: Osteocalcin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)94,03113
Polymers89,2982
Non-polymers4,73311
Water39622
1


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

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Components

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Protein , 2 types, 2 molecules AB

#1: Protein Vitamin K-dependent gamma-carboxylase / Gamma-glutamyl carboxylase / Peptidyl-glutamate 4-carboxylase / Vitamin K gamma glutamyl carboxylase


Mass: 81404.992 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GGCX, GC / Production host: Homo sapiens (human)
References: UniProt: P38435, peptidyl-glutamate 4-carboxylase
#2: Protein Osteocalcin / Bone Gla protein / BGP / Gamma-carboxyglutamic acid-containing protein


Mass: 7892.854 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: BGLAP / Production host: Homo sapiens (human) / References: UniProt: P02818

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Sugars , 2 types, 3 molecules

#3: 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
#4: 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.: 1 / 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 , 7 types, 30 molecules

#5: Chemical ChemComp-A1AVC / vitamin K1 hydroquinone / 2-methyl-3-[(2E,7R,11R)-3,7,11,15-tetramethylhexadec-2-en-1-yl]naphthalene-1,4-diol


Mass: 452.712 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C31H48O2 / Feature type: SUBJECT OF INVESTIGATION
#6: Chemical ChemComp-CLR / CHOLESTEROL


Mass: 386.654 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C27H46O
#7: Chemical ChemComp-PEE / 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine / DOPE


Mass: 744.034 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C41H78NO8P / Comment: DOPE, phospholipid*YM
#8: Chemical ChemComp-Y01 / CHOLESTEROL HEMISUCCINATE


Mass: 486.726 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C31H50O4
#9: Chemical ChemComp-CO2 / CARBON DIOXIDE


Mass: 44.010 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: CO2
#10: Chemical ChemComp-BCT / BICARBONATE ION


Mass: 61.017 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: CHO3
#11: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 22 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY
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: Vitamin K-dependent gamma-carboxylase complexed with Osteocalcin
Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

MicroscopyModel: FEI/PHILIPS CM300FEG/T
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1700 nm / Nominal defocus min: 900 nm
Image recordingElectron dose: 50 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: 2.62 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 994155 / Symmetry type: POINT
RefinementHighest resolution: 2.62 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)

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