We apply cryo-electron microscopy and single-molecule methods to study medically relevant macromolecular complexes

Publications

 2023

Artificial intelligence and the analysis of cryo-EM data provide insight into the molecular mechanisms underlying LN-lamininopathies. 

Abstract

Kulczyk, A.W.

Scientific Reports, 13(1):17825-17840 (2023).

Novel artificial intelligence-based approaches for ab initio structure determination and atomic model building for cryo-electron microscopy. 

Abstract

DiIorio, M.C., Kulczyk, A.W.

Micromachines, 14(9), 1674-1700 (2023).

Cryo-EM reveals the molecular basis of laminin polymerization and LN-lamininopathies. 

Abstract

Kulczyk, A.W.*, McKee, K.K., Zhang, X., Bizukojc, I., Yu, Y.Q., Yurchenco, P.D.

*Corresponding author

Nature Communications, 14(1), 317-324 (2023).

Cryo-EM structure of Shiga toxin 2 in complex with the native ribosomal P-stalk reveals residues involved in the binding interaction. 

Abstract

Kulczyk, A.W.*, Sorzano, C.O.S., Grela, P., Tchorzewski, M., Tumer, N.E., Li, X-P.

*Corresponding author

Journal of Biological Chemistry, 299(1), 102795-102808 (2023).

YlaN is an iron(II) binding protein that functions to releve Fur-medieted repression of gene expression in Staphylococcus aureus. 

Abstract

Boyd, J.M., Esquilin-Lebron, K.M., Cambell, C.J., Kaler, K.M.R., Norambuena, J., Foley, M.E., Stephens, T.G., Rios, G., Mereddy, G., Zheng, V., Bovermann, H., Kim, J., Kulczyk, A.W., Yang, J.H., Greco, T.M., Cristea, I.M., Carabetta, V.J., Beavers, V.N., Bhattacharya, D., Skaar, E.P., Parker, D., Carroll, R.K., Stemmler, T.L.

bioRxiv, doi.org/10.1101/2023.10.03.560778 (2023).


 2022

Exploring the structural variability of dynamic biological complexes by single-particle cryo-electron microscopy. 

Abstract

DiIorio, M.C., Kulczyk, A.W.

Micromachines, 14(1), 118-142 (2022).

Electron microscopy holdings of the Protein Data Bank: the impact of the resolution revolution, new validation tools, and implications for the future. 

Abstract

Burley, S., Berman, H.M., Chiu, W., Dai, W., Flatt, J.W., Hudson, B.P., Kaelber, J.T., Khare, S.D., Kulczyk, A.W., Lawson, C.L., Pintilie, G.D., Sali, A., Vallat, B., Westbrook, J.D., Young, J.Y., Zardecki, C.

Biophysical Reviews, 14(6), 1281-1301 (2022).

You cannot oxidize what you cannot reach: Oxidative susceptibility of buried methionine residues.

Abstract

Kulczyk, A.W., Leustek, T.

Journal of Biological Chemistry, 298(5), 101973-101974 (2022).

A robust single-particle cryo-electron microscopy (cryo-EM) processing workflow with cryoSPARC, Relion, and Scipion.

Abstract          Movie

DiIorio, M.C., Kulczyk, A.W.

Journal of Visual Experiments, 179, doi: 10.3791/63387 (2022).


 2018

A crystal structure of coil 1B vimentin in the filamentous form provides a model of a high-order assembly of a vimentin filament.

Abstract

Pang, A.H., Obiero, J.M., Kulczyk, A.W., Sviripa, V.M., Tsodikov, O.V.

FEBS Journal, 10, 1-12 (2018).


 2017

Cryo-EM structure of the replisome reveals multiple interactions coordinating DNA synthesis. 

Abstract

Kulczyk, A.W.*, Moeller, A., Meyer P., Sliz, P., Richardson, C.C.*

*Corresponding authors

Proceedings of the National Academy of Sciences of the USA, 114, 1848-1856 (2017).


 2016

Arek Kulczyk, Professor, cryo-EM, single-molecule

The Replication System of Bacteriophage T7.

Book chapter

Kulczyk, A.W., Richardson, C.C.

The Enzymes, 39, 89-136 (2016).

Arek Kulczyk, Professor, cryo-EM, single-molecule

Simultaneous real-time imaging of leading- and lagging-strand synthesis reveals the coordination dynamics of single replisomes.

Abstract

Duderstadt, K.E., Geertsema, H.J., Stratmann, S.A., Punter, C.M., Kulczyk, A.W., Richardson, C.C., van Oijen, A.M.

Molecular Cell, 64, 1035-1047 (2016).

Arek Kulczyk, Professor, cryo-EM, single-molecule

Structural and functional probing of PorZ, an essential bacterial-surface component of the type-IX secretion system of human oral-microbiomic P. gingivalis.

Abstract

Lasica A.M., Goulas T., Mizgalska D., Zhou X., de Diego I., Ksiazek M., Madej M., Guo Y., Guevara T., Nowak M., Potempa B., Goel A., Sztukowska M., Prabhakar A.T., Bzowska M., Widziolek M., Thøgersen I.B., Enghild J.J., Simonian M., Kulczyk, A.W., Nguyen K.A., Potempa J., Gomis-Rüth F.X.

Scientific Reports, 6, 37708 (2016).


 2014

Arek Kulczyk, Professor, cryo-EM, single-molecule

Single-molecule studies of polymerase dynamics and stoichiometry at the bacteriophage T7 replication machinery.

Abstract

Geertsema, H.J., Kulczyk, A.W., Richardson, C.C., van Oijen A.

Proceedings of the National Academy of Sciences of the USA, 111, 4073-4078 (2014).


2012

Molecular interactions in bacteriophage T7 priming complex.

Abstract

Kulczyk, A.W.*, Richardson, C.C.

*Corresponding author

Proceedings of the National Academy of Sciences of the USA, 109, 9408-9413 (2012).

An interaction between DNA polymerase and helicase is essential for the high processivity of the replisome.

Abstract

Kulczyk, A.W., Akabayov, B., Lee, S.J., Bostina M., Berkowitz S.A., Richardson C.C.

Journal of Biological Chemistry, 287(46), 39050-39060 (2012).

Heterohexamer of 56- and 63-kD gene 4 helicase-primase of bacteriophage T7 in DNA replication.

Abstract

Zhang, H., Lee, S.J., Kulczyk, A.W., Zhu, B., Richardson, C.C.

Journal of Biological Chemistry, 287(41), 34273-34287 (2012).

Characterization of a nucleotide kinase encoded by bacteriophage T7.

Abstract

Tran, N., Amarasiriwarden, C.J., Kulczyk, A.W., Richardson, C.C., Tabor, S.

Journal of Biological Chemistry, 287 (35), 29458-29478 (2012).


2011

Pyrovanadolysis: a pyrophosphorolysis-like reaction mediated by pyrovanadate, Mn2+, and DNA polymerase of bacteriophage T7.

Abstract

Akabayov, B., Kulczyk, A.W., Akabayov, S., McLaughlin, L., Theile, C., Beauchamp, B., Richardson, C.C.

Journal of Biological Chemistry, 286(33), 29146-29157 (2011).

Observing polymerase exchange by simultaneous measurements of replisome structure and function at the single-molecule level.

Abstract

Loparo, J., Kulczyk, A.W., Richardson, C.C., van Oijen A.

Proceedings of the National Academy of Sciences of the USA, 108, 3584-3589*.

*commentary by Shi, X., Ha, T. (2011). Seeing a molecular machine self-renew. (2011). Proceedings of the National Academy of Sciences of the USA, 108, 3459-3460 (2011).

A Critical residue for coupling dTTP hydrolysis with DNA unwinding by the helicase of bacteriophage T7.

Abstract

Satapathy, A.K., Kulczyk, A.W., Ghosh, S., van Oijen, A.M., Richardson, C.C.

Journal of Biological Chemistry, 286(39), 34468-34478 (2011).


2010

Direct observation of enzymes replicating DNA using a single-molecule DNA stretching assay.

Abstract

Kulczyk, A.W., Tanner N., Loparo J., Richardson C., van Oijen A.

Journal of Visual Experiments, 37, id: 1689, doi: 10.3791/1689 (2010).

Conformational dynamics of bacteriophage T7 DNA polymerase and its processivity factor, Escherichia coli thioredoxin.

Abstract

Akabayov, B., Akabayov, S.R., Lee, S.J., Tabor, S., Kulczyk, A.W., Richardson, C.C.

Proceedings of the National Academy of Sciences of the USA, 107, 15033-15038 (2010).


2008

Inadequate inhibition of host RNA polymerase restricts T7 bacteriophage growth on hosts overexpressing udk.

Abstract

Qimron, U., Kulczyk, A.W., Hamdan, S.M., Tabor, S., Richardson, C.C.

Molecular Microbiology, 67, 448-457 (2008).


2004

Solution structure and DNA binding of the zinc finger domain from DNA ligase IIIa.

Abstract

Kulczyk, A.W., Yang, J., Neuhaus, D.

Journal of Molecular Biology, 341, 723-738 (2004).