Johan Elf
Professor vid Institutionen för cell- och molekylärbiologi; Molekylär systembiologi
- Mobiltelefon:
- 070-980 31 35
- E-post:
- johan.elf@icm.uu.se
- Besöksadress:
- Husargatan 3
752 37 UPPSALA - Postadress:
- Box 596
751 24 UPPSALA
- CV:
- Ladda ned CV
Kort presentation
Johan Elf är Professor i fysikalisk biologi. Han är Wallenberg Academy Scholar, ledamot av Uppsala universitets styrelse och styrelsen för Kungliga Vetenskapsakademien.
Elf-gruppens forskning är ffa finansierad av KAW och ERC.
Johans forskning beskrivs på Elf lab .
Biografi
The Elf group has pioneered single molecule tracking methods by means of fluorescence microscopy in living cells. This is accompanied by development of new microfluidic techniques and corresponding analysis software to control growth conditions and enable automation. The group also designs computational tools for stochastic reaction-diffusion simulation of intracellular kinetics and mathematical modeling of intercellular physiology.
Johan Elf has founded the Uppsala based diagnostics company Astrego. Astrego develops a rapid point of care test for antibiotic susceptibility.

Publikationer
Urval av publikationer
Sequence specificity in DNA binding is mainly governed by association
Ingår i Science, s. 442-445, 2022
- DOI för Sequence specificity in DNA binding is mainly governed by association
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RecA finds homologous DNA by reduced dimensionality search
Ingår i Nature, s. 426-429, 2021
- DOI för RecA finds homologous DNA by reduced dimensionality search
- Ladda ner fulltext (pdf) av RecA finds homologous DNA by reduced dimensionality search
Time-resolved imaging-based CRISPRi screening
Ingår i Nature Methods, s. 86-92, 2020
DNA surface exploration and operator bypassing during target search
Ingår i Nature, s. 858-+, 2020
- DOI för DNA surface exploration and operator bypassing during target search
- Ladda ner fulltext (pdf) av DNA surface exploration and operator bypassing during target search
Nanometer resolution imaging and tracking of fluorescent molecules with minimal photon fluxes
Ingår i Science, s. 606-612, 2017
Kinetics of dCas9 target search in Escherichia coli
Ingår i Science, s. 1420-1423, 2017
The Synchronization of Replication and Division Cycles in Individual E. coli Cells
Ingår i Cell, s. 729-739, 2016
Ingår i Nature Genetics, s. 405-+, 2014
Extracting intracellular diffusive states and transition rates from single-molecule tracking data
Ingår i Nature Methods, s. 265-269, 2013
Lost in presumption: stochastic reactions in spatial models
Ingår i Nature Methods, 2012
The lac repressor displays facilitated diffusion in living cells
Ingår i Science, s. 1595-1598, 2012
Stochastic reaction-diffusion kinetics in the microscopic limit
Ingår i Proceedings of the National Academy of Sciences of the United States of America, s. 19820-19825, 2010
Effects of macromolecular crowding and DNA looping on gene regulation kinetics.
Ingår i Nature Physics, s. 294-297, 2009
Probing transcription factor dynamics at the single-molecule level in a living cell.
Ingår i Science, s. 1191-1194, 2007
Selective loss of charging of tRNA isoacceptors during amino acid limitation.
Ingår i Science, s. 1718-1722, 2003
Senaste publikationer
Culture-free detection of bacteria from blood for rapid sepsis diagnosis
Ingår i npj Digital Medicine, 2025
- DOI för Culture-free detection of bacteria from blood for rapid sepsis diagnosis
- Ladda ner fulltext (pdf) av Culture-free detection of bacteria from blood for rapid sepsis diagnosis
Phenotypic drug susceptibility testing for Mycobacterium tuberculosis variant bovis BCG in 12 hours
Ingår i Nature Communications, 2025
- DOI för Phenotypic drug susceptibility testing for Mycobacterium tuberculosis variant bovis BCG in 12 hours
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Pooled optical screening in bacteria using chromosomally expressed barcodes
Ingår i Communications Biology, 2025
- DOI för Pooled optical screening in bacteria using chromosomally expressed barcodes
- Ladda ner fulltext (pdf) av Pooled optical screening in bacteria using chromosomally expressed barcodes
Anti-correlation of LacI association and dissociation rates observed in living cells
Ingår i Nature Communications, 2025
- DOI för Anti-correlation of LacI association and dissociation rates observed in living cells
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The Escherichia coli chromosome moves to the replisome
Ingår i Nature Communications, 2024
- DOI för The Escherichia coli chromosome moves to the replisome
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Alla publikationer
Artiklar i tidskrift
Culture-free detection of bacteria from blood for rapid sepsis diagnosis
Ingår i npj Digital Medicine, 2025
- DOI för Culture-free detection of bacteria from blood for rapid sepsis diagnosis
- Ladda ner fulltext (pdf) av Culture-free detection of bacteria from blood for rapid sepsis diagnosis
Phenotypic drug susceptibility testing for Mycobacterium tuberculosis variant bovis BCG in 12 hours
Ingår i Nature Communications, 2025
- DOI för Phenotypic drug susceptibility testing for Mycobacterium tuberculosis variant bovis BCG in 12 hours
- Ladda ner fulltext (pdf) av Phenotypic drug susceptibility testing for Mycobacterium tuberculosis variant bovis BCG in 12 hours
Pooled optical screening in bacteria using chromosomally expressed barcodes
Ingår i Communications Biology, 2025
- DOI för Pooled optical screening in bacteria using chromosomally expressed barcodes
- Ladda ner fulltext (pdf) av Pooled optical screening in bacteria using chromosomally expressed barcodes
Anti-correlation of LacI association and dissociation rates observed in living cells
Ingår i Nature Communications, 2025
- DOI för Anti-correlation of LacI association and dissociation rates observed in living cells
- Ladda ner fulltext (pdf) av Anti-correlation of LacI association and dissociation rates observed in living cells
The Escherichia coli chromosome moves to the replisome
Ingår i Nature Communications, 2024
- DOI för The Escherichia coli chromosome moves to the replisome
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Ingår i Communications Biology, 2024
- DOI för Three-dimensional localization and tracking of chromosomal loci throughout the Escherichia coli cell cycle
- Ladda ner fulltext (pdf) av Three-dimensional localization and tracking of chromosomal loci throughout the Escherichia coli cell cycle
Real-time single-molecule 3D tracking in E. coli based on cross-entropy minimization
Ingår i Nature Communications, 2023
- DOI för Real-time single-molecule 3D tracking in E. coli based on cross-entropy minimization
- Ladda ner fulltext (pdf) av Real-time single-molecule 3D tracking in E. coli based on cross-entropy minimization
Ingår i Proceedings of the National Academy of Sciences of the United States of America, 2023
- DOI för Regulatory elements coordinating initiation of chromosome replication to the Escherichia coli cell cycle
- Ladda ner fulltext (pdf) av Regulatory elements coordinating initiation of chromosome replication to the Escherichia coli cell cycle
Can molecular dynamics be used to simulate biomolecular recognition?
Ingår i Journal of Chemical Physics, 2023
Antibiotic perseverance increases the risk of resistance development
Ingår i Proceedings of the National Academy of Sciences of the United States of America, 2023
- DOI för Antibiotic perseverance increases the risk of resistance development
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Ingår i PloS Computational Biology, 2023
- DOI för Label-free deep learning-based species classification of bacteria imaged by phase-contrast microscopy
- Ladda ner fulltext (pdf) av Label-free deep learning-based species classification of bacteria imaged by phase-contrast microscopy
Sequence specificity in DNA binding is mainly governed by association
Ingår i Science, s. 442-445, 2022
- DOI för Sequence specificity in DNA binding is mainly governed by association
- Ladda ner fulltext (pdf) av Sequence specificity in DNA binding is mainly governed by association
Direct measurements of mRNA translation kinetics in living cells
Ingår i Nature Communications, 2022
- DOI för Direct measurements of mRNA translation kinetics in living cells
- Ladda ner fulltext (pdf) av Direct measurements of mRNA translation kinetics in living cells
Ingår i Journal of Physical Chemistry B, s. 9971-9984, 2022
- DOI för Conformational Change of Transcription Factors from Search to Specific Binding: A lac Repressor Case Study
- Ladda ner fulltext (pdf) av Conformational Change of Transcription Factors from Search to Specific Binding: A lac Repressor Case Study
Rapid antibiotic susceptibility testing and species identification for mixed samples
Ingår i Nature Communications, 2022
- DOI för Rapid antibiotic susceptibility testing and species identification for mixed samples
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More Than Just Letters and Chemistry: Genomics Goes Mechanics
Ingår i TIBS -Trends in Biochemical Sciences. Regular ed., s. 431-432, 2021
The highly dynamic nature of bacterial heteroresistance impairs its clinical detection
Ingår i Communications Biology, 2021
- DOI för The highly dynamic nature of bacterial heteroresistance impairs its clinical detection
- Ladda ner fulltext (pdf) av The highly dynamic nature of bacterial heteroresistance impairs its clinical detection
Imaging-based screens of pool-synthesized cell libraries
Ingår i Nature Methods, s. 358-365, 2021
RecA finds homologous DNA by reduced dimensionality search
Ingår i Nature, s. 426-429, 2021
- DOI för RecA finds homologous DNA by reduced dimensionality search
- Ladda ner fulltext (pdf) av RecA finds homologous DNA by reduced dimensionality search
Time-resolved imaging-based CRISPRi screening
Ingår i Nature Methods, s. 86-92, 2020
DNA surface exploration and operator bypassing during target search
Ingår i Nature, s. 858-+, 2020
- DOI för DNA surface exploration and operator bypassing during target search
- Ladda ner fulltext (pdf) av DNA surface exploration and operator bypassing during target search
Ingår i Journal of Physical Chemistry B, s. 3576-3590, 2019
- DOI för Long Time-Scale Atomistic Simulations of the Structure and Dynamics of Transcription Factor-DNA Recognition
- Ladda ner fulltext (pdf) av Long Time-Scale Atomistic Simulations of the Structure and Dynamics of Transcription Factor-DNA Recognition
Rotational and Translational Diffusion of Proteins as a Function of Concentration
Ingår i ACS Omega, s. 20654-20664, 2019
- DOI för Rotational and Translational Diffusion of Proteins as a Function of Concentration
- Ladda ner fulltext (pdf) av Rotational and Translational Diffusion of Proteins as a Function of Concentration
Variational Algorithms for Analyzing Noisy Multistate Diffusion Trajectories
Ingår i Biophysical Journal, s. 276-282, 2018
Structure-guided approach to site-specific fluorophore labeling of the lac repressor LacI
Ingår i PLOS ONE, 2018
- DOI för Structure-guided approach to site-specific fluorophore labeling of the lac repressor LacI
- Ladda ner fulltext (pdf) av Structure-guided approach to site-specific fluorophore labeling of the lac repressor LacI
Ingår i EMBO Journal, 2018
tRNA tracking for direct measurements of protein synthesis kinetics in live cells
Ingår i Nature Chemical Biology, s. 618-626, 2018
Ingår i ACS Photonics, s. 233-255, 2017
Ingår i CELL SYSTEMS, s. 144-146, 2017
Ingår i Biophysical Journal, 2017
Nanometer resolution imaging and tracking of fluorescent molecules with minimal photon fluxes
Ingår i Science, s. 606-612, 2017
In situ genotyping of a pooled strain library after characterizing complex phenotypes
Ingår i Molecular Systems Biology, 2017
- DOI för In situ genotyping of a pooled strain library after characterizing complex phenotypes
- Ladda ner fulltext (pdf) av In situ genotyping of a pooled strain library after characterizing complex phenotypes
Pointwise error estimates in localization microscopy
Ingår i Nature Communications, 2017
- DOI för Pointwise error estimates in localization microscopy
- Ladda ner fulltext (pdf) av Pointwise error estimates in localization microscopy
Kinetics of dCas9 target search in Escherichia coli
Ingår i Science, s. 1420-1423, 2017
Antibiotic susceptibility testing in less than 30 min using direct single-cell imaging
Ingår i Proceedings of the National Academy of Sciences of the United States of America, s. 9170-9175, 2017
Simulated single molecule microscopy with SMeagol
Ingår i Bioinformatics, s. 2394-2395, 2016
- DOI för Simulated single molecule microscopy with SMeagol
- Ladda ner fulltext (pdf) av Simulated single molecule microscopy with SMeagol
The Synchronization of Replication and Division Cycles in Individual E. coli Cells
Ingår i Cell, s. 729-739, 2016
The helical structure of DNA facilitates binding
Ingår i Journal of Physics A, 2016
Ingår i Molecular Microbiology, s. 767-777, 2016
Ingår i Developmental Cell, s. 5-6, 2016
Hypothesis: Homologous Recombination Depends on Parallel Search
Ingår i CELL SYSTEMS, s. 325-327, 2016
Segmentation and track-analysis in time-lapse imaging of bacteria
Ingår i IEEE Journal on Selected Topics in Signal Processing, s. 174-184, 2016
Ingår i CELL SYSTEMS, s. 219-220, 2016
Ingår i Nucleic Acids Research, s. 3454-3464, 2015
Ingår i Biophysical Journal, 2015
Stochastic reaction–diffusion processes with embedded lower-dimensional structures
Ingår i Bulletin of Mathematical Biology, s. 819-853, 2014
Ingår i Biophysical Journal, 2014
Ingår i Proceedings of the National Academy of Sciences of the United States of America, s. 11413-11418, 2014
Ingår i Nature Genetics, s. 405-+, 2014
Ingår i Philosophical Transactions of the Royal Society of London. Biological Sciences, 2013
Transcription factor binding kinetics constrain noise suppression via negative feedback
Ingår i Nature Communications, 2013
A Bayesian Approach to Single Particle Tracking Analysis
Ingår i Biophysical Journal, 2013
Transcription-factor binding and sliding on DNA studied using micro- and macroscopic models
Ingår i Proceedings of the National Academy of Sciences of the United States of America, s. 19796-19801, 2013
Extracting intracellular diffusive states and transition rates from single-molecule tracking data
Ingår i Nature Methods, s. 265-269, 2013
Lost in presumption: stochastic reactions in spatial models
Ingår i Nature Methods, s. 1163-1166, 2012
Lost in presumption: stochastic reactions in spatial models
Ingår i Nature Methods, 2012
MesoRD 1.0: Stochastic reaction-diffusion simulations in the microscopic limit
Ingår i Bioinformatics, 2012
Positive allosteric feedback regulation of the stringent response enzyme RelA by its product
Ingår i EMBO Reports, s. 835-839, 2012
The lac repressor displays facilitated diffusion in living cells
Ingår i Science, s. 1595-1598, 2012
MesoRD 1.0: Stochastic reaction-diffusion simulations in the microscopic limit
Ingår i Bioinformatics, s. 3155-3157, 2012
Delay-induced anomalous fluctuations in intracellular regulation
Ingår i Nature Communications, 2011
Single-molecule investigations of the stringent response machinery in living bacterial cells
Ingår i Proceedings of the National Academy of Sciences of the United States of America, 2011
Ingår i Scientific reports, s. 195, 2011
Costs and constraints from time-delayed feedback in small gene regulatory motifs
Ingår i Proceedings of the National Academy of Sciences of the United States of America, s. 8171-8176, 2010
Stochastic reaction-diffusion kinetics in the microscopic limit
Ingår i Proceedings of the National Academy of Sciences of the United States of America, s. 19820-19825, 2010
RNAs actively cycle on the Sm-like protein Hfq
Ingår i Genes & Development, s. 2621-2626, 2010
Fokker-Planck approximation of the master equation in molecular biology
Ingår i Computing and Visualization in Science, s. 37-50, 2009
Effects of macromolecular crowding and DNA looping on gene regulation kinetics.
Ingår i Nature Physics, s. 294-297, 2009
Single molecule approaches to transcription factor kinetics in living cells
Ingår i FEBS Letters, s. 3979-3983, 2009
Probing transcription factor dynamics at the single-molecule level in a living cell.
Ingår i Science, s. 1191-1194, 2007
Bistable bacterial growth rate in response to antibiotics with low membrane permeability
Ingår i Physical Review Letters, 2006
Noise-induced Min phenotypes in E. coli
Ingår i PloS Computational Biology, s. 637-648, 2006
Stochastic reaction-diffusion simulation with MesoRD.
Ingår i Bioinformatics, s. 2923-4, 2005
What makes ribosome-mediated transcriptional attenuation sensitive to amino
Ingår i PloS Computational Biology, 2005
Ingår i J Mol Biol, s. 16-24, 2005
Selective charging of tRNA isoacceptors induced by amino-acid starvation.
Ingår i EMBO Rep, s. 151-7, 2005
Ribosome bypassing at serine codons as a test of the model of selective transfer RNA charging.
Ingår i EMBO Rep, s. 147-50, 2005
Near-critical behavior of aminoacyl-tRNA pools in E. coli at rate-limiting supply of amino acids.
Ingår i Biophys J, s. 132-46, 2005
Spontaneous separation of bi-stable biochemical systems into spatial domains of opposite phases
Ingår i Systems Biology, s. 230-236, 2004
The bacterial toxin RelE displays codon specific cleavage of mRNAs in the ribosomal A-site
Ingår i Cell, s. 131-140, 2003
Near critical phenomena in metabolite pools
Ingår i Journal, s. 154-170, 2003
Systems biology is taking off.
Ingår i Genome Research, s. 2475-2484, 2003
An efficient algorithm for mesoscopic reaction-diffusion simulation
Ingår i Proceedings of the SPIE conference on Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems, 2003
Fast evaluation of fluctuations in biochemical networks with the linear noise approximation.
Ingår i Genome Research, s. 2475-2484, 2003
Selective loss of charging of tRNA isoacceptors during amino acid limitation.
Ingår i Science, s. 1718-1722, 2003
Ingår i JOURNAL OF MOLECULAR BIOLOGY, s. 941-954, 2001
Artiklar, forskningsöversikt
Single-Molecule Kinetics in Living Cells
Ingår i Annual Review of Biochemistry, s. 635-659, 2019
Bursting onto the scene?: Exploring stochastic mRNA production in bacteria
Ingår i Current Opinion in Microbiology, s. 124-130, 2018
Single molecule methods with applications in living cells
Ingår i Current Opinion in Biotechnology, s. 737-744, 2013
Studying transcriptional interactions in single cells at sufficient resolution
Ingår i Current Opinion in Biotechnology, s. 81-86, 2011
Kapitel i böcker, delar av antologi
Stochastic Modeling of Intracellular Kinetics
Ingår i System Modeling in Cellular Biology, s. 480, The MIT Press, Cambridge, 2006
Mesoscopic kinetics and its applications in protein synthesis
Ingår i Systems Biology, s. 95-118, Springer-Verlag GmbH, 2005
Konferensbidrag
Microfluidic chip for large-scale phenotypic characterization of E. coli
2019
An Evaluation of the Faster STORM Method for Super-resolution Microscopy
Ingår i Proceedings of the 22nd International Conference on Pattern Recognition, s. 4435-4440, 2014
Problems of high dimension in molecular biology
Ingår i Proc. 19th GAMM Seminar Leipzig on High-dimensional problems, s. 21-30, 2003
Manuskript (preprint)
Transcription factor dissociation measurements using single molecule chase in living cells
RecA mediated homology search finds segregated sister locus in minutes after a double stranded break
- DOI för RecA mediated homology search finds segregated sister locus in minutes after a double stranded break
- Ladda ner fulltext (pdf) av RecA mediated homology search finds segregated sister locus in minutes after a double stranded break
Real-time pooled optical screening with single-cell isolation capability
Molecular Origins of Kinetics and Selectivity in the lac operon
The LacI hinge region balances binding stability against inducibility
An Optical Pooled Screening Platform for Single-Molecule Measurements in Live Cells: A Pilot Study