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I. Akopjana · SciRah

Researcher profile · Semantic Scholar

I. Akopjana

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I. Akopjana — researcher profile on SciRah

h-index: 16
Works: 68
Citations: 1,420

Most-cited papers

Rapid Proton-Detected NMR Assignment for Proteins with Fast Magic Angle Spinning
E. Barbet-Massin, A. J. Pell, J. Retel, L. Andreas +24 more
2014Journal of the American Chemical Society301 citations Open access
Semantic Scholar
Structure of fully protonated proteins by proton-detected magic-angle spinning NMR
L. Andreas, K. Jaudzems, J. Staněk, D. Lalli +13 more
2016Proceedings of the National Academy of Sciences of the United States of America238 citations Open access
Semantic Scholar
Asymmetric cryo-EM reconstruction of phage MS2 reveals genome structure in situ
R. Koning, J. Gómez-Blanco, I. Akopjana, J. Vargas +4 more
2016Nature Communications146 citations Open access
Semantic Scholar
NMR Spectroscopic Assignment of Backbone and Side-Chain Protons in Fully Protonated Proteins: Microcrystals, Sedimented Assemblies, and Amyloid Fibrils.
J. Staněk, L. Andreas, K. Jaudzems, Diane Cala +19 more
2016Angewandte Chemie133 citations Open access
Semantic Scholar
Structure of AP205 Coat Protein Reveals Circular Permutation in ssRNA Bacteriophages.
M. Shishovs, J. Rūmnieks, C. A. Diebolder, K. Jaudzems +8 more
2016Journal of Molecular Biology72 citations
Semantic Scholar
Dynamic Nuclear Polarization-Enhanced Biomolecular NMR Spectroscopy at High Magnetic Field with Fast Magic-Angle Spinning.
K. Jaudzems, A. Bertarello, S. Chaudhari, A. Pica +10 more
2018Angewandte Chemie63 citations
Semantic Scholar
Out-and-back 13C–13C scalar transfers in protein resonance assignment by proton-detected solid-state NMR under ultra-fast MAS
E. Barbet-Massin, A. J. Pell, K. Jaudzems, W. Franks +8 more
2013Journal of Biomolecular NMR59 citations Open access
Semantic Scholar
A VLP Library of C-Terminally Truncated Hepatitis B Core Proteins: Correlation of RNA Encapsidation with a Th1/Th2 Switch in the Immune Responses of Mice
I. Sominskaya, D. Skrastina, I. Petrovskis, Andris Dishlers +8 more
2013PLoS ONE41 citations Open access
Semantic Scholar
Production and purification of chimeric HBc virus-like particles carrying influenza virus LAH domain as vaccine candidates
A. Kazaks, I-Na Lu, S. Farinelle, A. Ramirez +16 more
2017BMC Biotechnology32 citations Open access
Semantic Scholar
Production and characterization of novel ssRNA bacteriophage virus-like particles from metagenomic sequencing data
I. Liekniņa, G. Kalniņš, I. Akopjana, J. Bogans +4 more
2019Journal of Nanobiotechnology25 citations Open access
Semantic Scholar
Construction and Immunogenicity of a Novel Multivalent Vaccine Prototype Based on Conserved Influenza Virus Antigens
A. Kirsteina, I. Akopjana, J. Bogans, I. Liekniņa +10 more
2020Vaccines24 citations Open access
Semantic Scholar
Structural evolution of an immune evasion determinant shapes pathogen host tropism
Ashley L. Marcinkiewicz, K. Brangulis, Alan P. Dupuis, Thomas M. Hart +10 more
2023Proceedings of the National Academy of Sciences of the United States of America20 citations Open access
Semantic Scholar
Production of the HBc Protein from Different HBV Genotypes in E. coli. Use of Reassociated HBc VLPs for Packaging of ss- and dsRNA
I. Petrovskis, I. Liekniņa, A. Dišlers, J. Jansons +4 more
2021Microorganisms19 citations Open access
Semantic Scholar
Structural and functional analysis of BB0689 from Borrelia burgdorferi, a member of the bacterial CAP superfamily.
K. Brangulis, K. Jaudzems, I. Petrovskis, I. Akopjana +2 more
2015Journal of Structural Biology19 citations
Semantic Scholar
Crystal structures of the Erp protein family members ErpP and ErpC from Borrelia burgdorferi reveal the reason for different affinities for complement regulator factor H.
K. Brangulis, I. Petrovskis, A. Kazaks, I. Akopjana +1 more
2015Biochimica et Biophysica Acta17 citations
Semantic Scholar
Expression and purification of active, stabilized trimethyllysine hydroxylase.
A. Kazaks, M. Makrecka-Kuka, J. Kuka, T. Voronkova +4 more
2014Protein Expression and Purification17 citations
Semantic Scholar
Three-dimensional structure of 22 uncultured ssRNA bacteriophages: Flexibility of the coat protein fold and variations in particle shapes
J. Rūmnieks, I. Liekniņa, G. Kalniņš, M. Šišovs +3 more
2020Science Advances16 citations Open access
Semantic Scholar
Zuordnung der Rückgrat‐ und Seitenketten‐Protonen in vollständig protonierten Proteinen durch Festkörper‐NMR‐Spektroskopie: Mikrokristalle, Sedimente und Amyloidfibrillen
J. Stanek, Loren B. Andreas, Kristaps Jaudzems, Diane Cala +19 more
201615 citations
Semantic Scholar
Structures of plasmepsin II from Plasmodium falciparum in complex with two hydroxyethylamine-based inhibitors.
R. Recacha, J. Leitans, I. Akopjana, L. Aprupe +4 more
2015Acta Crystallographica Section F Structural Biology Communications15 citations Open access
Semantic Scholar
Structural analysis of the outer surface proteins from Borrelia burgdorferi paralogous gene family 54 that are thought to be the key players in the pathogenesis of Lyme disease.
K. Brangulis, I. Akopjana, I. Petrovskis, A. Kazaks +1 more
2020Journal of Structural Biology13 citations
Semantic Scholar
Production and Purification of Soy Leghemoglobin from Pichia pastoris Cultivated in Different Expression Media
Emils Bolmanis, J. Bogans, I. Akopjana, A. Suleiko +2 more
2023Processes12 citations Open access
Semantic Scholar
BBE31 from the Lyme disease agent Borrelia burgdorferi, known to play an important role in successful colonization of the mammalian host, shows the ability to bind glutathione.
K. Brangulis, I. Akopjana, I. Petrovskis, A. Kazaks +4 more
2019Biochimica et Biophysica Acta - General Subjects11 citations
Semantic Scholar
Crystal structure of Borrelia burgdorferi outer surface protein BBA69 in comparison to the paralogous protein CspA.
K. Brangulis, I. Akopjana, I. Petrovskis, A. Kazaks +1 more
2019Ticks and Tick-borne Diseases10 citations
Semantic Scholar
PreS1 Containing HBc VLPs for the Development of a Combined Therapeutic/Prophylactic Hepatitis B Vaccine
Andris Dishlers, I. Petrovskis, D. Skrastina, Ieva Zarina +6 more
2023Microorganisms9 citations Open access
Semantic Scholar
Crystal structure of the membrane attack complex assembly inhibitor BGA71 from the Lyme disease agent Borrelia bavariensis
K. Brangulis, I. Akopjana, I. Petrovskis, A. Kazaks +2 more
2018Scientific Reports9 citations Open access
Semantic Scholar
Fibronectin-binding nanoparticles for intracellular targeting addressed by B. burgdorferi BBK32 protein fragments.
R. Ranka, I. Petrovskis, I. Sominskaya, J. Bogans +7 more
2013Nanomedicine: Nanotechnology, Biology and Medicine9 citations Open access
Semantic Scholar
Out-and-back 13C–13C scalar transfers in protein resonance assignment by proton-detected solid-state NMR under ultra-fast MAS
E. Barbet-Massin, A. J. Pell, K. Jaudzems, W. Franks +8 more
2013Journal of Biomolecular NMR9 citations Open access
Semantic Scholar
Members of the paralogous gene family 12 from the Lyme disease agent Borrelia burgdorferi are non-specific DNA-binding proteins
K. Brangulis, I. Akopjana, Laura Drunka, Sofija Matisone +4 more
2024PLoS ONE7 citations Open access
Semantic Scholar
The Application of Adaptive Model Predictive Control for Fed-Batch Escherichia coli BL21 (DE3) Cultivation and Biosynthesis of Recombinant Proteins
K. Dubencovs, A. Suleiko, E. Sile, I. Petrovskis +5 more
2023Fermentation6 citations Open access
Semantic Scholar
Structural analysis of Borrelia burgdorferi periplasmic lipoprotein BB0365 involved in Lyme disease infection
K. Brangulis, I. Akopjana, I. Petrovskis, A. Kazaks +5 more
2020FEBS Letters6 citations Open access
Semantic Scholar
Crystal structure of Plasmodium falciparum proplasmepsin IV: the plasticity of proplasmepsins.
R. Recacha, K. Jaudzems, I. Akopjana, A. Jirgensons +1 more
2016Acta Crystallographica Section F Structural Biology Communications6 citations Open access
Semantic Scholar
Mechanistic insights into the structure-based design of a CspZ-targeting Lyme disease vaccine
K. Brangulis, Jill Malfetano, Ashley L. Marcinkiewicz, Alan Wang +12 more
2025Nature Communications5 citations Open access
Semantic Scholar
Backbone and side-chain proton NMR assignment in fully protonated proteins: microcrystals, sedimented assemblies, and amyloid fibrils
J. Staněk, L. Andreas, K. Jaudzems, Diane Cala +19 more
20165 citations
Semantic Scholar
Preclinical Evaluation of virus-like particle Vaccine Against Carbonic Anhydrase IX Efficacy in a Mouse Breast Cancer Model System
Zane Kalniņa, I. Liekniņa, Vendija Skeltona, I. Akopjana +2 more
2024Molecular Biotechnology4 citations
Semantic Scholar
CspZ variant–specific interaction with factor H incorporates a metal site to support Lyme borreliae complement evasion
K. Brangulis, Valerie Sürth, Ashley L. Marcinkiewicz, I. Akopjana +5 more
2024Journal of Biological Chemistry4 citations Open access
Semantic Scholar
Structure of the Borrelia burgdorferi ATP-dependent metalloprotease FtsH in its functionally relevant hexameric form.
K. Brangulis, Laura Drunka, I. Akopjana, K. Ta̅rs
2023Biochimica et Biophysica Acta - Proteins and Proteomics4 citations Open access
Semantic Scholar
Crystal structure of the N-terminal domain of the major virulence factor BB0323 from the Lyme disease agent Borrelia burgdorferi.
K. Brangulis, I. Akopjana, A. Kazaks, K. Ta̅rs
2019Acta Crystallographica Section D: Structural Biology4 citations
Semantic Scholar
Recombinant design of the enzymatically active domain of phage Enc34 endolysin to improve its activity against Gram-negative bacteria
Tatjana Kazaka, Ņ. Zrelovs, I. Akopjana, J. Bogans +3 more
2024FEMS Microbiology Letters3 citations
Semantic Scholar
A unique borrelial protein facilitates microbial immune evasion
Shelby D. Foor, K. Brangulis, A. Shakya, V. S. Rana +13 more
2023mBio3 citations Open access
Semantic Scholar
Structure of viral nucleocapsid by solid-state NMR at 100 kHz magic-angle spinning
D. C. Paepe, K. Jaudzems, L. Andreas, J. Staněk +13 more
20163 citations
Semantic Scholar
Selection and validation of novel DNA aptamer panel co-specific to Plasmodium falciparum and Plasmodium ovale lactate dehydrogenase
Liga Kunrade, K. Pleiko, Laura Sproge, K. Goluba +6 more
2026Molecular Therapy: Nucleic Acids2 citations Open access
Semantic Scholar
Evaluation of Outer Surface Protein Vaccine Candidates of Borrelia burgdorferi for Lyme Disease
I. Liekniņa, Anna Kozlova, Marina Šaško, I. Akopjana +2 more
2023Microbiology Research2 citations Open access
Semantic Scholar
Structural Analysis of the Outer Membrane Lipoprotein BBA14 (OrfD) and the Corresponding Paralogous Gene Family 143 (PFam143) from Borrelia burgdorferi
I. Akopjana, K. Brangulis
2022Pathogens2 citations Open access
Semantic Scholar
Comparative Immunogenicity in Rabbits of the Polypeptides Encoded by the 5′ Terminus of Hepatitis C Virus RNA
I. Sominskaya, J. Jansons, A. Dovbenko, N. Petrakova +8 more
2015Journal of Immunological Research2 citations Open access
Semantic Scholar
Sustainable glycerol-based extraction of bioactive compounds from tree bark for transdermal applications
Jevgenija Ponomarenko, Matiss Pals, Ksenia Radovska, I. Akopjana +2 more
2026Industrial crops and products (Print)1 citations Open access
Semantic Scholar
Structural studies of chromosomally encoded outer surface lipoprotein BB0158 from Borrelia burgdorferi sensu stricto.
K. Brangulis, I. Akopjana, J. Bogans, A. Kazaks +1 more
2023Ticks and Tick-borne Diseases1 citations Open access
Semantic Scholar
Structural evolution of an immune evasion determinant shapes Lyme borreliae host tropism
Ashley L. Marcinkiewicz, K. Brangulis, Alan P. Dupuis, Thomas M. Hart +10 more
2022bioRxiv1 citations Open access
Semantic Scholar
Investigation of Recombinantly Produced Endolysins Reveals a Modular Enzyme Shared by Several Enterobacteria Phages to Exhibit Broad‐Range Lytic Activity Against Different Orders of Gammaproteobacteria
Tatjana Kazaka, Ņ. Zrelovs, I. Akopjana, J. Bogans +3 more
2026MicrobiologyOpen0 citations Open access
Semantic Scholar
Divergent dimerization mechanisms and conserved DNA-binding function in PFam12 proteins of Borrelia burgdorferi
K. Brangulis, Dagnija Tupina, Everita Elīna Siņicina, Diāna Zeļencova-Gopejenko +3 more
2025Scientific Reports0 citations Open access
Semantic Scholar
9 Structural evolution of a complement evasion determinant shapes Lyme borreliae host tropism
Ashley L. Marcinkiewicz, K. Brangulis, Alan DupuisII, Thomas M. Hart +10 more
2023Immunobiology0 citations Open access
Semantic Scholar

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