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- EMDB-26061: Cryo-em structure of human prothrombinase on a nanodisc at 5.3 An... -

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Basic information

Entry
Database: EMDB / ID: EMD-26061
TitleCryo-em structure of human prothrombinase on a nanodisc at 5.3 Angstrom resolution
Map dataprothrombinase on a nanodisc
Sample
  • Complex: prothrombinase
    • Complex: Factor X light chain, Activated factor Xa heavy chain
      • Protein or peptide: Factor X light chain
      • Protein or peptide: Activated factor Xa heavy chain
    • Complex: Coagulation factor Va
      • Protein or peptide: Coagulation factor Va
      • Protein or peptide: Coagulation factor Va
Function / homology
Function and homology information


response to vitamin K / coagulation factor Xa / platelet alpha granule / Cargo concentration in the ER / Defective factor IX causes thrombophilia / Defective cofactor function of FVIIIa variant / Defective F9 variant does not activate FX / blood circulation / Extrinsic Pathway of Fibrin Clot Formation / COPII-mediated vesicle transport ...response to vitamin K / coagulation factor Xa / platelet alpha granule / Cargo concentration in the ER / Defective factor IX causes thrombophilia / Defective cofactor function of FVIIIa variant / Defective F9 variant does not activate FX / blood circulation / Extrinsic Pathway of Fibrin Clot Formation / COPII-mediated vesicle transport / COPII-coated ER to Golgi transport vesicle / positive regulation of TOR signaling / Gamma-carboxylation of protein precursors / Transport of gamma-carboxylated protein precursors from the endoplasmic reticulum to the Golgi apparatus / Common Pathway of Fibrin Clot Formation / Removal of aminoterminal propeptides from gamma-carboxylated proteins / Intrinsic Pathway of Fibrin Clot Formation / endoplasmic reticulum-Golgi intermediate compartment membrane / platelet alpha granule lumen / Post-translational protein phosphorylation / phospholipid binding / Golgi lumen / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / extracellular vesicle / blood coagulation / Platelet degranulation / positive regulation of cell migration / copper ion binding / external side of plasma membrane / endoplasmic reticulum lumen / serine-type endopeptidase activity / calcium ion binding / proteolysis / extracellular space / extracellular region / membrane / plasma membrane
Similarity search - Function
Coagulation factor 5/8-like / Coagulation factors 5/8 type C domain (FA58C) signature 2. / Multicopper oxidases, conserved site / Multicopper oxidases signature 1. / Coagulation factors 5/8 type C domain (FA58C) signature 1. / Coagulation factor 5/8 C-terminal domain, discoidin domain / Coagulation factors 5/8 type C domain (FA58C) profile. / Peptidase S1A, coagulation factor VII/IX/X/C/Z / Coagulation factor-like, Gla domain superfamily / F5/8 type C domain ...Coagulation factor 5/8-like / Coagulation factors 5/8 type C domain (FA58C) signature 2. / Multicopper oxidases, conserved site / Multicopper oxidases signature 1. / Coagulation factors 5/8 type C domain (FA58C) signature 1. / Coagulation factor 5/8 C-terminal domain, discoidin domain / Coagulation factors 5/8 type C domain (FA58C) profile. / Peptidase S1A, coagulation factor VII/IX/X/C/Z / Coagulation factor-like, Gla domain superfamily / F5/8 type C domain / Coagulation factor 5/8 C-terminal domain / Coagulation Factor Xa inhibitory site / Multicopper oxidase, N-terminal / Multicopper oxidase / EGF-type aspartate/asparagine hydroxylation site / EGF-like domain / EGF-like calcium-binding, conserved site / Calcium-binding EGF-like domain signature. / Aspartic acid and asparagine hydroxylation site. / EGF-like calcium-binding domain / Calcium-binding EGF-like domain / Vitamin K-dependent carboxylation/gamma-carboxyglutamic (GLA) domain / 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. / Epidermal growth factor-like domain. / EGF-like domain profile. / EGF-like domain signature 2. / EGF-like domain signature 1. / EGF-like domain / Cupredoxin / Galactose-binding-like domain superfamily / Serine proteases, trypsin family, histidine active site / Serine proteases, trypsin family, serine active site / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, histidine active site. / Serine proteases, trypsin domain profile. / Serine proteases, trypsin family, serine active site. / Trypsin-like serine protease / Serine proteases, trypsin domain / Trypsin / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan
Similarity search - Domain/homology
Coagulation factor X / Coagulation factor V
Similarity search - Component
Biological speciesHomo sapiens (human) / human (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 5.3 Å
AuthorsDi Cera E / Ruben EA
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI) United States
CitationJournal: Blood / Year: 2022
Title: Cryo-EM structure of the prothrombin-prothrombinase complex.
Authors: Eliza A Ruben / Brock Summers / Michael J Rau / James A J Fitzpatrick / Enrico Di Cera /
Abstract: The intrinsic and extrinsic pathways of the coagulation cascade converge to a common step where the prothrombinase complex, comprising the enzyme factor Xa (fXa), the cofactor fVa, Ca2+ and ...The intrinsic and extrinsic pathways of the coagulation cascade converge to a common step where the prothrombinase complex, comprising the enzyme factor Xa (fXa), the cofactor fVa, Ca2+ and phospholipids, activates the zymogen prothrombin to the protease thrombin. The reaction entails cleavage at 2 sites, R271 and R320, generating the intermediates prethrombin 2 and meizothrombin, respectively. The molecular basis of these interactions that are central to hemostasis remains elusive. We solved 2 cryogenic electron microscopy (cryo-EM) structures of the fVa-fXa complex, 1 free on nanodiscs at 5.3-Å resolution and the other bound to prothrombin at near atomic 4.1-Å resolution. In the prothrombin-fVa-fXa complex, the Gla domains of fXa and prothrombin align on a plane with the C1 and C2 domains of fVa for interaction with membranes. Prothrombin and fXa emerge from this plane in curved conformations that bring their protease domains in contact with each other against the A2 domain of fVa. The 672ESTVMATRKMHDRLEPEDEE691 segment of the A2 domain closes on the protease domain of fXa like a lid to fix orientation of the active site. The 696YDYQNRL702 segment binds to prothrombin and establishes the pathway of activation by sequestering R271 against D697 and directing R320 toward the active site of fXa. The cryo-EM structure provides a molecular view of prothrombin activation along the meizothrombin pathway and suggests a mechanism for cleavage at the alternative R271 site. The findings advance our basic knowledge of a key step of coagulation and bear broad relevance to other interactions in the blood.
History
DepositionJan 25, 2022-
Header (metadata) releaseMay 4, 2022-
Map releaseMay 4, 2022-
UpdateJun 29, 2022-
Current statusJun 29, 2022Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_26061.png

Downloads & links

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Map

FileDownload / File: emd_26061.map.gz / Format: CCP4 / Size: 255.3 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationprothrombinase on a nanodisc
Voxel sizeX=Y=Z: 0.94 Å
Density
Contour LevelBy AUTHOR: 0.2
Minimum - Maximum-0.5035569 - 1.0712842
Average (Standard dev.)0.003383162 (±0.029865986)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions406406406
Spacing406406406
CellA=B=C: 381.63998 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_26061_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: prothrombinase on a nanodisc

Fileemd_26061_half_map_1.map
Annotationprothrombinase on a nanodisc
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: prothrombinase on a nanodisc

Fileemd_26061_half_map_2.map
Annotationprothrombinase on a nanodisc
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : prothrombinase

EntireName: prothrombinase
Components
  • Complex: prothrombinase
    • Complex: Factor X light chain, Activated factor Xa heavy chain
      • Protein or peptide: Factor X light chain
      • Protein or peptide: Activated factor Xa heavy chain
    • Complex: Coagulation factor Va
      • Protein or peptide: Coagulation factor Va
      • Protein or peptide: Coagulation factor Va

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Supramolecule #1: prothrombinase

SupramoleculeName: prothrombinase / type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: all

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Supramolecule #2: Factor X light chain, Activated factor Xa heavy chain

SupramoleculeName: Factor X light chain, Activated factor Xa heavy chain / type: complex / Chimera: Yes / ID: 2 / Parent: 1 / Macromolecule list: #1, #4
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Mesocricetus auratus (golden hamster)

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Supramolecule #3: Coagulation factor Va

SupramoleculeName: Coagulation factor Va / type: complex / Chimera: Yes / ID: 3 / Parent: 1 / Macromolecule list: #2-#3
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Factor X light chain

MacromoleculeName: Factor X light chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 15.743385 KDa
Recombinant expressionOrganism: Mesocricetus auratus (golden hamster)
SequenceString:
ANSFLEEMKK GHLERECMEE TCSYEEAREV FEDSDKTNEF WNKYKDGDQC ETSPCQNQGK CKDGLGEYTC TCLEGFEGKN CELFTRKLC SLDNGDCDQF CHEEQNSVVC SCARGYTLAD NGKACIPTGP YPCGKQTLER

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Macromolecule #2: Coagulation factor Va

MacromoleculeName: Coagulation factor Va / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: human (human)
Molecular weightTheoretical: 81.274391 KDa
SequenceString: AQLRQFYVAA QGISWSYRPE PTNSSLNLSV TSFKKIVYRE YEPYFKKEKP QSTISGLLGP TLYAEVGDII KVHFKNKADK PLSIHPQGI RYSKLSEGAS YLDHTFPAEK MDDAVAPGRE YTYEWSISED SGPTHDDPPC LTHIYYSHEN LIEDFNSGLI G PLLICKKG ...String:
AQLRQFYVAA QGISWSYRPE PTNSSLNLSV TSFKKIVYRE YEPYFKKEKP QSTISGLLGP TLYAEVGDII KVHFKNKADK PLSIHPQGI RYSKLSEGAS YLDHTFPAEK MDDAVAPGRE YTYEWSISED SGPTHDDPPC LTHIYYSHEN LIEDFNSGLI G PLLICKKG TLTEGGTQKT FDKQIVLLFA VFDESKSWSQ SSSLMYTVNG YVNGTMPDIT VCAHDHISWH LLGMSSGPEL FS IHFNGQV LEQNHHKVSA ITLVSATSTT ANMTVGPEGK WIISSLTPKH LQAGMQAYID IKNCPKKTRN LKKITREQRR HMK RWEYFI AAEEVIWDYA PVIPANMDKK YRSQHLDNFS NQIGKHYKKV MYTQYEDESF TKHTVNPNMK EDGILGPIIR AQVR DTLKI VFKNMASRPY SIYPHGVTFS PYEDEVNSSF TSGRNNTMIR AVQPGETYTY KWNILEFDEP TENDAQCLTR PYYSD VDIM RDIASGLIGL LLICKSRSLD RRGIQRAADI EQQAVFAVFD ENKSWYLEDN INKFCENPDE VKRDDPKFYE SNIMST ING YVPESITTLG FCFDDTVQWH FCSVGTQNEI LTIHFTGHSF IYGKRHEDTL TLFPMRGESV TVTMDNVGTW MLTSMNS SP RSKKLRLKFR DVKCIPDDDE DSYEIFEPPE STVMATRKMH DRLEPEDEES DADYDYQNRL AAALGIR

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Macromolecule #3: Coagulation factor Va

MacromoleculeName: Coagulation factor Va / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: human (human)
Molecular weightTheoretical: 75.283008 KDa
SequenceString: SNNGNRRNYY IAAEEISWDY SEFVQRETDI EDSDDIPEDT TYKKVVFRKY LDSTFTKRDP RGEYEEHLGI LGPIIRAEVD DVIQVRFKN LASRPYSLHA HGLSYEKSSE GKTYEDDSPE WFKEDNAVQP NSSYTYVWHA TERSGPESPG SACRAWAYYS A VNPEKDIH ...String:
SNNGNRRNYY IAAEEISWDY SEFVQRETDI EDSDDIPEDT TYKKVVFRKY LDSTFTKRDP RGEYEEHLGI LGPIIRAEVD DVIQVRFKN LASRPYSLHA HGLSYEKSSE GKTYEDDSPE WFKEDNAVQP NSSYTYVWHA TERSGPESPG SACRAWAYYS A VNPEKDIH SGLIGPLLIC QKGILHKDSN MPMDMREFVL LFMTFDEKKS WYYEKKSRSS WRLTSSEMKK SHEFHAINGM IY SLPGLKM YEQEWVRLHL LNIGGSQDIH VVHFHGQTLL ENGNKQHQLG VWPLLPGSFK TLEMKASKPG WWLLNTEVGE NQR AGMQTP FLIMDRDCRM PMGLSTGIIS DSQIKASEFL GYWEPRLARL NNGGSYNAWS VEKLAAEFAS KPWIQVDMQK EVII TGIQT QGAKHYLKSC YTTEFYVAYS SNQINWQIFK GNSTRNVMYF NGNSDASTIK ENQFDPPIVA RYIRISPTRA YNRPT LRLE LQGCEVNGCS TPLGMENGKI ENKQITASSF KKSWWGDYWE PFRARLNAQG RVNAWQAKAN NNKQWLEIDL LKIKKI TAI ITQGCKSLSS EMYVKSYTIH YSEQGVEWKP YRLKSSMVDK IFEGNTNTKG HVKNFFNPPI ISRFIRVIPK TWNQSIA LR LELFGCDIY

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Macromolecule #4: Activated factor Xa heavy chain

MacromoleculeName: Activated factor Xa heavy chain / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 28.534596 KDa
Recombinant expressionOrganism: Mesocricetus auratus (golden hamster)
SequenceString: IVGGQECKDG ECPWQALLIN EENEGFCGGT ILSEFYILTA AHCLYQAKRF KVRVGDRNTE QEEGGEAVHE VEVVIKHNRF TKETYDFDI AVLRLKTPIT FRMNVAPACL PERDWAESTL MTQKTGIVSG FGRTHEKGRQ STRLKMLEVP YVDRNSCKLS S SFIITQNM ...String:
IVGGQECKDG ECPWQALLIN EENEGFCGGT ILSEFYILTA AHCLYQAKRF KVRVGDRNTE QEEGGEAVHE VEVVIKHNRF TKETYDFDI AVLRLKTPIT FRMNVAPACL PERDWAESTL MTQKTGIVSG FGRTHEKGRQ STRLKMLEVP YVDRNSCKLS S SFIITQNM FCAGYDTKQE DACQGDAGGP HVTRFKDTYF VTGIVSWGEG CARKGKYGIY TKVTAFLKWI DRSMKTRGLP KA KSHAPEV ITSSPLK

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.4 / Details: 20mM Hepes, 150mM NaCl, 5mM CaCl2
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS GLACIOS
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.4 µm / Nominal defocus min: 0.8 µm
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 51.28 e/Å2

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

7kve

Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION
Final reconstructionResolution.type: BY AUTHOR / Resolution: 5.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 16835

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