[English] 日本語
Yorodumi
- EMDB-14438: VAR2 complex with PAM1.4 -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-14438
TitleVAR2 complex with PAM1.4
Map data
Sample
  • Complex: VAR2CSA complex with PAM1.4
    • Protein or peptide: PAM1.4, Heavy Chain
    • Protein or peptide: PAM1.4, light Chain
    • Protein or peptide: VAR2CSA
Function / homology
Function and homology information


membrane => GO:0016020 / host cell surface receptor binding
Similarity search - Function
Plasmodium falciparum erythrocyte membrane protein 1, N-terminal / N-terminal segments of P. falciparum erythrocyte membrane protein / Plasmodium falciparum erythrocyte membrane protein 1, acidic terminal segment superfamily / Plasmodium falciparum erythrocyte membrane protein 1, acidic terminal segment / acidic terminal segments, variant surface antigen of PfEMP1 / Duffy-antigen binding / Duffy-antigen binding superfamily / Duffy binding domain
Similarity search - Domain/homology
Biological speciesPlasmodium falciparum (malaria parasite P. falciparum) / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.0 Å
AuthorsRaghavan SSR / Wang KT
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: PLoS Pathog / Year: 2022
Title: Cryo-EM reveals the conformational epitope of human monoclonal antibody PAM1.4 broadly reacting with polymorphic malarial protein VAR2CSA.
Authors: Sai Sundar Rajan Raghavan / Robert Dagil / Mary Lopez-Perez / Julian Conrad / Maria Rosaria Bassi / Maria Del Pilar Quintana / Swati Choudhary / Tobias Gustavsson / Yong Wang / Pontus ...Authors: Sai Sundar Rajan Raghavan / Robert Dagil / Mary Lopez-Perez / Julian Conrad / Maria Rosaria Bassi / Maria Del Pilar Quintana / Swati Choudhary / Tobias Gustavsson / Yong Wang / Pontus Gourdon / Michael Fokuo Ofori / Sebastian Boje Christensen / Daniel Thomas Remias Minja / Christentze Schmiegelow / Morten Agertoug Nielsen / Lea Barfod / Lars Hviid / Ali Salanti / Thomas Lavstsen / Kaituo Wang /
Abstract: Malaria during pregnancy is a major global health problem caused by infection with Plasmodium falciparum parasites. Severe effects arise from the accumulation of infected erythrocytes in the placenta. ...Malaria during pregnancy is a major global health problem caused by infection with Plasmodium falciparum parasites. Severe effects arise from the accumulation of infected erythrocytes in the placenta. Here, erythrocytes infected by late blood-stage parasites adhere to placental chondroitin sulphate A (CS) via VAR2CSA-type P. falciparum erythrocyte membrane protein 1 (PfEMP1) adhesion proteins. Immunity to placental malaria is acquired through exposure and mediated through antibodies to VAR2CSA. Through evolution, the VAR2CSA proteins have diversified in sequence to escape immune recognition but retained their overall macromolecular structure to maintain CS binding affinity. This structural conservation may also have allowed development of broadly reactive antibodies to VAR2CSA in immune women. Here we show the negative stain and cryo-EM structure of the only known broadly reactive human monoclonal antibody, PAM1.4, in complex with VAR2CSA. The data shows how PAM1.4's broad VAR2CSA reactivity is achieved through interactions with multiple conserved residues of different sub-domains forming conformational epitope distant from the CS binding site on the VAR2CSA core structure. Thus, while PAM1.4 may represent a class of antibodies mediating placental malaria immunity by inducing phagocytosis or NK cell-mediated cytotoxicity, it is likely that broadly CS binding-inhibitory antibodies target other epitopes at the CS binding site. Insights on both types of broadly reactive monoclonal antibodies may aid the development of a vaccine against placental malaria.
History
DepositionFeb 24, 2022-
Header (metadata) releaseNov 2, 2022-
Map releaseNov 2, 2022-
UpdateNov 30, 2022-
Current statusNov 30, 2022Processing site: PDBe / Status: Released

-
Structure visualization

Supplemental images

emd_14438.png

Downloads & links

-
Map

FileDownload / File: emd_14438.map.gz / Format: CCP4 / Size: 325 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 440 pix.
= 366.08 Å		0.83 Å/pix.
x 440 pix.
= 366.08 Å		0.83 Å/pix.
x 440 pix.
= 366.08 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.832 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.3
Minimum - Maximum-0.9058572 - 2.3522205
Average (Standard dev.)-0.00010363813 (±0.04266431)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions440440440
Spacing440440440
CellA=B=C: 366.08002 Å
α=β=γ: 90.0 °

-
Supplemental data

-
Additional map: #1

Fileemd_14438_additional_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Sample components

-
Entire : VAR2CSA complex with PAM1.4

EntireName: VAR2CSA complex with PAM1.4
Components
  • Complex: VAR2CSA complex with PAM1.4
    • Protein or peptide: PAM1.4, Heavy Chain
    • Protein or peptide: PAM1.4, light Chain
    • Protein or peptide: VAR2CSA

-
Supramolecule #1: VAR2CSA complex with PAM1.4

SupramoleculeName: VAR2CSA complex with PAM1.4 / type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
Molecular weightTheoretical: 350 KDa

-
Macromolecule #1: PAM1.4, Heavy Chain

MacromoleculeName: PAM1.4, Heavy Chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 51.554219 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MGWSCIILFL VATATGVHSE VRLVEYGGRV VRPGGSLRLS CAAGGFDFDD YGMSWVRQAP GKGLEWVAGI NWNALDKKYA DSVKGRFTI SRDNPKSSVY LQMTSLTAED TALYYCARDL RNSIFATGAL GNWGQGTLVI VSSASTKGPS VFPLAPSSKS T SGGTAALG ...String:
MGWSCIILFL VATATGVHSE VRLVEYGGRV VRPGGSLRLS CAAGGFDFDD YGMSWVRQAP GKGLEWVAGI NWNALDKKYA DSVKGRFTI SRDNPKSSVY LQMTSLTAED TALYYCARDL RNSIFATGAL GNWGQGTLVI VSSASTKGPS VFPLAPSSKS T SGGTAALG CLVKDYFPEP VTVSWNSGAL TSGVHTFPAV LQSSGLYSLS SVVTVPSSSL GTQTYICNVN HKPSNTKVDK KV EPKSCDK THTCPPCPAP ELLGGPSVFL FPPKPKDTLM ISRTPEVTCV VVDVSHEDPE VKFNWYVDGV EVHNAKTKPR EEQ YNSTYR VVSVLTVLHQ DWLNGKEYKC KVSNKALPAP IEKTISKAKG QPREPQVYTL PPSRDELTKN QVSLTCLVKG FYPS DIAVE WESNGQPENN YKTTPPVLDS DGSFFLYSKL TVDKSRWQQG NVFSCSVMHE ALHNHYTQKS LSLSPGK

-
Macromolecule #2: PAM1.4, light Chain

MacromoleculeName: PAM1.4, light Chain / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 25.425562 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MGWSCIILFL VATATGVHCD IQMTQSPSSL SASIGDRVTI TCRASQDIAN YLAWYQQKPG TVPKLLIYAA STLLSGVPSR FSGRQSGTH FTLTISSLQP EDVATYYCQK YNNAPAAFGQ GTRLEIKRTV AAPSVFIFPP SDEQLKSGTA SVVCLLNNFY P REAKVQWK ...String:
MGWSCIILFL VATATGVHCD IQMTQSPSSL SASIGDRVTI TCRASQDIAN YLAWYQQKPG TVPKLLIYAA STLLSGVPSR FSGRQSGTH FTLTISSLQP EDVATYYCQK YNNAPAAFGQ GTRLEIKRTV AAPSVFIFPP SDEQLKSGTA SVVCLLNNFY P REAKVQWK VDNALQSGNS QESVTEQDSK DSTYSLSSTL TLSKADYEKH KVYACEVTHQ GLSSPVTKSF NRGEC

-
Macromolecule #3: VAR2CSA

MacromoleculeName: VAR2CSA / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Strain: FVO
Molecular weightTheoretical: 235.359453 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MDSTSTIANK IEEYLGAKSD DSKIDELLKA DPSEVEYYRS GGDGDYLKNN ICKITVNHSD SGKYDPCEKK LPPYDDNDQW KCQQNSSDG SGKPENICVP PRRERLCTYN LENLKFDKIR DNNAFLADVL LTARNEGEKI VQNHPDTNSS NVCNALERSF A DLADIIRG ...String:
MDSTSTIANK IEEYLGAKSD DSKIDELLKA DPSEVEYYRS GGDGDYLKNN ICKITVNHSD SGKYDPCEKK LPPYDDNDQW KCQQNSSDG SGKPENICVP PRRERLCTYN LENLKFDKIR DNNAFLADVL LTARNEGEKI VQNHPDTNSS NVCNALERSF A DLADIIRG TDQWKGTNSN LEKNLKQMFA KIRENDKVLQ DKYPKDQKYT KLREAWWNAN RQKVWEVITC GARSNDLLIK RG WRTSGKS DRKKNFELCR KCGHYEKEVP TKLDYVPQFL RWLTEWIEDF YREKQNLIDD MERHREECTR EDHKSKEGTS YCS TCKDKC KKYCECVKKW KTEWENQENK YKDLYEQNKN KTSQKNTSRY DDYVKDFFEK LEANYSSLEN YIKGDPYFAE YATK LSFIL NPSDANNPSG ETANHNDEAC NCNESGISSV GQAQTSGPSS NKTCITHSSI KTNKKKECKD VKLGVRENDK DLKIC VIED TSLSGVDNCC CQDLLGILQE NCSDNKRGSS SNDSCDNKNQ DECQKKLEKV FASLTNGYKC DKCKSGTSRS KKKWIW KKS SGNEEGLQEE YANTIGLPPR TQSLYLGNLP KLENVCEDVK DINFDTKEKF LAGCLIVSFH EGKNLKKRYP QNKNSGN KE NLCKALEYSF ADYGDLIKGT SIWDNEYTKD LELNLQNNFG KLFGKYIKKN NTAEQDTSYS SLDELRESWW NTNKKYIW T AMKHGAEMNI TTCNADGSVT GSGSSCDDIP TIDLIPQYLR FLQEWVENFC EQRQAKVKDV ITNCKSCKES GNKCKTECK TKCKDECEKY KKFIEACGTA GGGIGTAGSP WSKRWDQIYK RYSKHIEDAK RNRKAGTKNC GTSSTTNAAA STDENKCVQS DIDSFFKHL IDIGLTTPSS YLSNVLDDNI CGADKAPWTT YTTYTTTEKC NKERDKSKSQ SSDTLVVVNV PSPLGNTPYR Y KYACQCKI PTNEETCDDR KEYMNQWSCG SARTMKRGYK NDNYELCKYN GVDVKPTTVR SNSSKLDGND VTFFNLFEQW NK EIQYQIE QYMTNANISC IDEKEVLDSV SDEGTPKVRG GYEDGRNNNT DQGTNCKEKC KCYKLWIEKI NDQWGKQKDN YNK FRSKQI YDANKGSQNK KVVSLSNFLF FSCWEEYIQK YFNGDWSKIK NIGSDTFEFL IKKCGNNSAH GEEIFSEKLK NAEK KCKEN ESTDTNINKS ETSCDLNATN YIRGCQSKTY DGKIFPGKGG EKQWICKDTI IHGDTNGACI PPRTQNLCVG ELWDK SYGG RSNIKNDTKE LLKEKIKNAI HKETELLYEY HDTGTAIISK NDKKGQKGKN DPNGLPKGFC HAVQRSFIDY KNMILG TSV NIYEHIGKLQ EDIKKIIEKG TPQQKDKIGG VGSSTENVNA WWKGIEREMW DAVRCAITKI NKKNNNSIFN GDECGVS PP TGNDEDQSVS WFKEWGEQFC IERLRYEQNI REACTINGKN EKKCINSKSG QGDKIQGACK RKCEKYKKYI SEKKQEWD K QKTKYENKYV GKSASDLLKE NYPECISANF DFIFNDNIEY KTYYPYGDYS SICSCEQVKY YKYNNAEKKN NKSLCYEKD NDMTWSKKYI KKLENGRSLE GVYVPPRRQQ LCLYELFPII IKNEEGMEKA KEELLETLQI VAEREAYYLW KQYNPTGKGI DDANKKACC AIRGSFYDLE DIIKGNDLVH DEYTKYIDSK LNEIFGSSNT NDIDTKRART DWWENETITN GTDRKTIRQL V WDAMQSGV RYAVEEKNEN FPLCMGVEHI GIAKPQFIRW LEEWTNEFCE KYTKYFEDMK SKCDPPKRAD TCGDNSNIEC KK ACANYTN WLNPKRIEWN GMSNYYNKIY RKSNKESEDG KDYSMIMAPT VIDYLNKRCH GEINGNYICC SCKNIGAYNT TSG TVNKKL QKKETECEEE KGPLDLMNEV LNKMDKKYSA HKMKCTEVYL EHVEEQLNEI DNAIKDYKLY PLDRCFDDQT KMKV CDLIA DAIGCKDKTK LDELDEWNDM DLRGTYNKHK GVLIP

-
Experimental details

-
Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

-
Sample preparation

BufferpH: 7.5
GridMaterial: COPPER
VitrificationCryogen name: ETHANE

-
Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Detector mode: COUNTING / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

+
Image processing

CTF correctionSoftware - Name: cryoSPARC
Final reconstructionAlgorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 3.0 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 50000
Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbjlvh1.pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more