2026-05-06 REL RCSB INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY RCSB RCSB 2026-04-23 2026-05-06 2026-05-06 2026-05-06 Brazilian National Council for Scientific and Technological Development (CNPq) 465395/2014-7 Brazil Brazilian National Council for Scientific and Technological Development (CNPq) 408046/2021-0 Brazil Brazilian National Council for Scientific and Technological Development (CNPq) 408340/2024-0 Brazil Brazilian National Council for Scientific and Technological Development (CNPq) 303914/2024-6 Brazil Brazilian National Council for Scientific and Technological Development (CNPq) 404972/2021-7 Brazil Brazilian National Council for Scientific and Technological Development (CNPq) 301052/2025-5 Brazil CryoEM structure of Papaya Meleira Virus (PMeV) particles purified directly from Carica papaya latex de Oliveira G Rodrigues S Papaya sticky disease, Double-stranded RNA viruses, Quasiequivalent conformation, Icosahedral capsid, VIRUS de Oliveira G Montovaneli G Arruda H Rios V Cunha M Maurastoni M Amorim G Abreu E Ribeiro S Sanches M Zingali R Almeida F Santos A Fernandes A Ventura J Silva J Fernandes P Rodrigues S Structural adaptation of a dsRNA virus enables persistence in plant latex and expands host range To Be Published 0353 12ze FULLOVERLAP EMDB EMD-76875 associated EM volume
CryoEM structure of Papaya Meleira Virus (PMeV) particles purified directly from Carica papaya latex
 Papaya meleira virus Papaya meleira virus 0 1
Structure of PMeV particles purified directly from Carica papaya latex.
Papaya meleira virus Carica papaya Coat protein 490.0 1 VIRION STRAIN false false Coat protein Carica papaya 0.09947275 2 LEVO NENIIDSQRRNKAIPEYNTILVPQVKELGNSQLIPSEYLLSNDYEGLEYSYDRYFGTIPQSFIFSPADLKLDVDNKVITV NRQTELFTEFPREVCRLSETSYTNQEYIIMSSINQAKANSYKVKRLASGLVTKDNIPILPQYSSCMDVIKGRDISPSARK TIDEAFQIHRCYGTNVSRSGSSYETLRRSRFNQVYDLYNNVSSGQSYVRLYYRLFTRWAQAQMAQVLNERNTIYSPKEFK PQNLQWEYTSNNVAVRRDSVHYLASTGDGKYGNILKGNYNFGNNHIYDGEYSLFGHATDMFRKIQNGSAFFLDAEGLSHD VIREICCCAIDINEGNQPWLGITVGSDDTHVLKTKFTIPGLYYQCEGVSDIIIHWGATEPEDVIPLRDLINVNFPDPGLR NSTGQLSDNNLPWPEFTNFGLATAPINLSTIEEAIRIMVARTHSAEEARLAFELVMSRMLMIDVSKSPCYNGNQDSPTGS TLNETHYPLSTEWHRESNTSHIEKANAHKSRFIQPTGANELRLPYVFSGLAYFDFMFHEMTIPSPLWEATIMKGNQFINH SFIITHALSVSINWPSHTFSVDGGILDLAHNSPLTTPNMLNCPLAKRHINWLNKQSRQETPSIWSMCHKRATSVMYGFTL SDYFWLTGPRIPRDFYLTNSPIYLSHPYRLGWMIKKIPIHMVLPSASLQPLWPKQEWTPKVYSNEIQSRVRVGRSFPVFQ GFNWLQDGGMNFSLQYYLGIHNNNKYRYETPQWNDNTIQLASWDVPMQTEFPTAPRFINPIFTGPCNSNDILDNYMVPGF VRNYDFTTNRVKANGAKVFEENTDAQKYLIHLVWQRIIDGKQLTVPSISVIPPSGMPIQDLYDNEY A0A172JTY4 singleParticle particle 3 9.0 0.01 Borate EMS Lacey Carbon COPPER 300 CARBON LACEY GLOW DISCHARGE AIR
Grid preparation conditions were optimized for papaya meleira virus (PMeV) samples using counter-sided blotting for 5 s on freshly glow-discharged lacey carbon grids (Ted Pella, #01895-F). Glow discharge was performed for 45 s using an EMS GloQube. Grids were plunge-frozen using an EM GP2 (Leica Microsystems). The blotting arm height and position were adjusted, and a contact sensor was used to ensure reproducible blotting conditions.
 ETHANE 95 298 LEICA EM GP
Grids were plunge-frozen using an EM GP2 (Leica Microsystems). The blotting arm height and position were adjusted, and a contact sensor was used to ensure reproducible blotting conditions..
Monodisperse Papaya Meleira virus (PMeV) particles purified from Carica papaya latex
 TFS KRIOS OTHER OTHER FIELD EMISSION GUN 300 20.0 2.7 0.3 0.3 2.5 2.5 215000.0 215000.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN TFS Selectris 10 FEI FALCON IV (4k x 4k) 4096 4096 25357 5.0 40.0 1 53162 cryoSPARC v.4.5.3 PHASE FLIPPING AND AMPLITUDE CORRECTION
Approximately 700 particles were manually picked and extracted to generate templates through two-dimensional (2D) classification. An initial ab initio three-dimensional reconstruction was generated using a subset of 20000 particles with a maximum resolution of 6 Angstrons, an initial resolution of 35 Angstrons, C1 symmetry, 200 final iterations, and a class similarity parameter of 0.1. The resulting volume clearly revealed icosahedral symmetry.
 20 I FOURIER SPACE 2.6 FSC 0.143 CUT-OFF cryoSPARC v.4.5.3 53162 PROJECTION MATCHING cryoSPARC v.4.5.3 PROJECTION MATCHING cryoSPARC v.4.5.3 30 2531.0 cryoSPARC v.4.5.3
Two-dimensional classification was performed using 30 initial classes, a maximum alignment and classification resolution of 6 Angstrons, an initial classification uncertainty factor of 4, a circular mask diameter of 500 Angstrons, an outer circular mask diameter of 520 Angstrons, and 15 final full iterations, resulting in well-defined and homogeneous classes.
 emd_76875.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 512 512 512 0 0 0 512 512 512 614.4 614.4 614.4 90.0 90.0 90.0 X Y Z -1.4795651 3.5520942 0.003803737 0.2111132 1.2 1.2 1.2 0.8 AUTHOR Papaya Meleira Virus (PMeV) particles obtained directly from Carica papaya latex. Other in silico model
The annotated coat protein sequence (GenBank accession no. AMU19319.1) and the segmented density maps were used as input for automated model building with ModelAngelo and DeepTracer, which yielded highly similar models.
 BACKBONE TRACE Cross-correlation REAL 60.0 emd_76875_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 512 512 512 0 0 0 512 512 512 614.4 614.4 614.4 90.0 90.0 90.0 X Y Z -0.5297644 1.7529658 0.003826212 0.13215287 1.2 1.2 1.2 AUTHOR Papaya Meleira Virus (PMeV) particles half map emd_76875_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 512 512 512 0 0 0 512 512 512 614.4 614.4 614.4 90.0 90.0 90.0 X Y Z -0.5064984 1.7651747 0.0037812628 0.13201608 1.2 1.2 1.2 AUTHOR Papaya Meleira Virus (PMeV) particles half map