Skip to main content
Steven Johnson.jpg

Steve Johnson

Associate Professor
Microbiology & Molecular Biology

3132 LSB
Provo, UT 84602

Biography

Biography
Dr. Steven M. Johnson joined the faculty of the Microbiology and Molecular Biology Department at Brigham Young University as an assistant professor in 2009, the same department from which he received his B.S. in Molecular Biology in 1994. After working for Dr. Raoul Nelson as a laboratory technician at the University of Utah’s Eccles Institute of Human Genetics from 1995 to 1997, Dr. Johnson discovered his love of teaching while pursuing a M.S. (’99) in molecular biology in the lab of Dr. Michael Breindl at San Diego State University. Having decided to stay in academia and become a professor, Dr. Johnson left San Diego for Yale where he worked with Dr. Frank Slack to earn his M.Phil. (’01) and Ph.D (’04) by studying microRNAs and discovering the regulation of the oncogene RAS by let-7 family microRNAs, providing evidence that microRNAs could act as tumor suppressors (Johnson et al, Cell 2005). In 2004, Dr. Johnson joined the lab of Dr. Andrew Fire at Stanford University School of Medicine where as a Fellow of the American Cancer Society (’05-’08) he studied the relationship between DNA sequence, nucleosome positioning, and gene expression; the same topic he and his group are currently researching in his own lab at BYU.

Research Interests
In my lab we study chromatin architecture by looking at nucleosome positioning and its relation to the underlying DNA sequence in the genome, with the goal of learning how to modulate chromatin architecture by subtly manipulating the underlying DNA sequence to regulate gene expression. We are using both in vivo (in live animals) and in vitro (in the test tube) approaches in our studies coupled with ultra-high-throughput DNA sequencing technologies. For these studies we use the nematode worm C. elegans (a common model organism for human genetics and disease). We are also using in vitro nucleosome reconstitution assays to define and test putative nucleosome attractive or repulsive sequences. These sequences can then be tested in vivo in the worm for their potential to regulate genic expression both temporally and spatially in C. elegans.

Because of the highly conserved nature of histone proteins within the domain Eukaryotae and the absolute conservation of the chemical structure of DNA between all forms of life, what we learn from these basic studies in the worm may enable us to subtly manipulate gene expression in human cells and tissues with the potential to overcome the universal problem of gene silencing which occurs with DNA-based disease treatments such as those seen in current applications of gene-therapy.

Education
Stanford University School of Medicine, Postdoctoral Fellowship (2009)
Yale University, Molecular Biology, Ph.D. (2004)
Yale University, Molecular Biology, M.Phil. (2001)
San Diego State University, Molecular Biology, M.S. (1999)
Brigham Young University, Molecular Biology, B.Sc. (1994)

Honors and Awards
Brigham Young University: Phi Kappa Phi Faculty Initiate, ΦΚΦ Chapter 58
BYU Department of Microbiology and Molecular Biology: Teaching Award (Highest Students Ratings in a 500-level Course)
BYU Department of Microbiology and Molecular Biology: Research Award (Highest Impact Factor Journal Publication).
Karolinska Institutet, Stockholm, Sweden: Invited Nobel week seminar
Yale University: Exceptionally clear and effective poster presentation Award, MCDB Retreat
SDSU Biology Department: Outstanding Teaching Associate of 1999
American Society of Nephrology Annual Meeting: Blue Ribbon Protocol Award
Brigham Young University: Trustees’ Scholar and Scholarship
Arizona State University: Regents’ Scholarship, gratefully declined

Research Interests

In my lab we study chromatin architecture by looking at nucleosome positioning and its relation to the underlying DNA sequence in the genome, with the goal of learning how to modulate chromatin architecture by subtly manipulating the underlying DNA sequence to regulate gene expression. We are using both in vivo (in live animals) and in vitro (in the test tube) approaches in our studies coupled with ultra-high-throughput DNA sequencing technologies. For these studies we use the nematode worm C. elegans (a common model organism for human genetics and disease). We are also using in vitro nucleosome reconstitution assays to define and test putative nucleosome attractive or repulsive sequences. These sequences can then be tested in vivo in the worm for their potential to regulate genic expression both temporally and spatially in C. elegans.

Because of the highly conserved nature of histone proteins within the domain Eukaryotae and the absolute conservation of the chemical structure of DNA between all forms of life, what we learn from these basic studies in the worm may enable us to subtly manipulate gene expression in human cells and tissues with the potential to overcome the universal problem of gene silencing which occurs with DNA-based disease treatments such as those seen in current applications of gene-therapy.

Education

  • Postdoctoral Fellowship, , institution ( 2009-01-01 - 2009-12-31 )
  • Ph.D., Molecular Biology , institution ( 2004-01-01 - 2004-12-31 )
  • M.Phil., Molecular Biology , institution ( 2001-01-01 - 2001-12-31 )
  • M.S., Molecular Biology , institution ( 1999-01-01 - 1999-12-31 )
  • B.S., Molecular Biology , institution ( 1994-01-01 - 1994-12-31 )

Memberships

  • Phi Kappa Phi: ( - Present)
  • The Genetics Society of America: ( - Present)

Professional Citizenship

  • Editorial Review Board Member, Journal of Nanogenomics and Nanomedicine, 2012-01-01 - 2012-12-31 - Present
  • Reviewer, Ad Hoc Reviewer, Genome Biology, 2018-01-01 - 2018-12-31 - 2018-01-01 - 2018-12-31
  • Reviewer, Ad Hoc Reviewer, Genome Research, 2018-01-01 - 2018-12-31 - 2018-01-01 - 2018-12-31
  • Grant Proposal Reviewer, External, NIH, Molecular Genetics B Study Section, GGG, 2017-01-01 - 2017-12-31 - 2017-01-01 - 2017-12-31
  • Reviewer, Ad Hoc Reviewer, PLoS ONE, 2017-01-01 - 2017-12-31 - 2017-01-01 - 2017-12-31
  • Grant Proposal Reviewer, External, NIH, Pathogenic Eukaryotes Study Section, PTHE, 2015-01-01 - 2015-12-31 - 2015-01-01 - 2015-12-31
  • Reviewer, Ad Hoc Reviewer, Nature Communications, 2014-01-01 - 2014-12-31 - 2014-01-01 - 2014-12-31
  • Reviewer, Ad Hoc Reviewer, Genome Research, 2013-01-01 - 2013-12-31 - 2013-01-01 - 2013-12-31
  • Reviewer, Ad Hoc Reviewer, Genome Research, 2012-01-01 - 2012-12-31 - 2012-01-01 - 2012-12-31
  • Reviewer, Ad Hoc Reviewer, Nature Structure and Molecular Biology, 2012-01-01 - 2012-12-31 - 2012-01-01 - 2012-12-31
  • Reviewer, Ad Hoc Reviewer, Genome Research, 2011-01-01 - 2011-12-31 - 2011-01-01 - 2011-12-31
  • Reviewer, Ad Hoc Reviewer, BMC Genomics, 2010-01-01 - 2010-12-31 - 2010-01-01 - 2010-12-31
  • Reviewer, Ad Hoc Reviewer, Genome Research, 2010-01-01 - 2010-12-31 - 2010-01-01 - 2010-12-31
  • Reviewer, Ad Hoc Reviewer, Genome Research, 2009-01-01 - 2009-12-31 - 2009-01-01 - 2009-12-31

Courses Taught

2020

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 799R: Section 010
  • MMBIO 294R: Section 010
  • MMBIO 695R: Section 010
  • MMBIO 494R: Section 009
  • MMBIO 799R: Section 009
  • MMBIO 799R: Section 008
  • MMBIO 695R: Section 009
  • MMBIO 494R: Section 011
  • MMBIO 799R: Section 010
  • MMBIO 468 : Section 001
  • MMBIO 665 : Section 001
  • MMBIO 695R: Section 010

2019

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 494R: Section 011
  • MMBIO 799R: Section 011
  • MMBIO 294R: Section 011
  • MMBIO 799R: Section 010
  • MMBIO 799R: Section 010
  • MMBIO 695R: Section 010
  • MMBIO 494R: Section 011
  • MMBIO 468 : Section 001
  • MMBIO 665 : Section 001
  • MMBIO 695R: Section 010

2018

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 494R: Section 011
  • MMBIO 699R: Section 011
  • MMBIO 695R: Section 011
  • MMBIO 699R: Section 010
  • MMBIO 695R: Section 010
  • MMBIO 695R: Section 010
  • MMBIO 551R: Section 004
  • MMBIO 468 : Section 001
  • MMBIO 665 : Section 001
  • MMBIO 699R: Section 011
  • MMBIO 494R: Section 011
  • MMBIO 695R: Section 010

2017

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 494R: Section 011
  • MMBIO 695R: Section 11
  • MMBIO 494R: Section 10
  • MMBIO 799R: Section 10
  • MMBIO 699R: Section 10
  • MMBIO 551R: Section 3
  • MMBIO 799R: Section 10
  • MMBIO 468 : Section 001
  • MMBIO 665 : Section 001
  • MMBIO 699R: Section 11
  • MMBIO 494R: Section 011
  • MMBIO 695R: Section 10

2016

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 551R: Section 004
  • MMBIO 799R: Section 11
  • MMBIO 699R: Section 11
  • MMBIO 494R: Section 11
  • MMBIO 695R: Section 011
  • MMBIO 799R: Section 10
  • MMBIO 799R: Section 10
  • MMBIO 494R: Section 10
  • MMBIO 551R: Section 002
  • BIO 468 : Section 001
  • MMBIO 468 : Section 001
  • PWS 468 : Section 001
  • MMBIO 699R: Section 11
  • MMBIO 494R: Section 011
  • MMBIO 695R: Section 10

2015

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 799R: Section 11
  • MMBIO 699R: Section 11
  • MMBIO 494R: Section 11
  • MMBIO 661 : Section 001
  • MMBIO 695R: Section 11
  • MMBIO 799R: Section 026
  • MMBIO 799R: Section 010
  • MMBIO 799R: Section 010
  • BIO 468 : Section 001
  • MMBIO 468 : Section 001
  • PWS 468 : Section 001
  • MMBIO 494R: Section 011
  • MMBIO 695R: Section 010

2014

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 799R: Section 010
  • MMBIO 494R: Section 010
  • BIO 661 : Section 001
  • MMBIO 661 : Section 001
  • PDBIO 661 : Section 001
  • PWS 661 : Section 001
  • MMBIO 695R: Section 010
  • MMBIO 651R: Section 001
  • MMBIO 799R: Section 025
  • MMBIO 799R: Section 009
  • MMBIO 699R: Section 009
  • MMBIO 494R: Section 009
  • BIO 468 : Section 001
  • MMBIO 468 : Section 001
  • PWS 468 : Section 001
  • MMBIO 494R: Section 011
  • MMBIO 494R: Section 018
  • MMBIO 695R: Section 010

2013

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 699R: Section 009
  • MMBIO 494R: Section 010
  • MMBIO 695R: Section 010
  • MMBIO 651R: Section 001
  • MMBIO 442 : Section 001
  • MMBIO 695R: Section 005
  • MMBIO 442 : Section 002
  • BIO 468 : Section 001
  • MMBIO 468 : Section 001
  • PWS 468 : Section 001
  • MMBIO 691R: Section 001
  • MMBIO 494R: Section 011
  • MMBIO 490R: Section 001
  • MMBIO 695R: Section 010

2012

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 494R: Section 010
  • MMBIO 695R: Section 010
  • MMBIO 799R: Section 003
  • MMBIO 494R: Section 005
  • MMBIO 695R: Section 005
  • MMBIO 442 : Section 001
  • BIO 468 : Section 001
  • MMBIO 468 : Section 001
  • PWS 468 : Section 001
  • MMBIO 494R: Section 011
  • MMBIO 494R: Section 018

2011

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 494R: Section 011
  • MMBIO 515 : Section 001
  • MMBIO 494R: Section 004
  • MMBIO 695R: Section 004
  • MMBIO 494R: Section 011
  • MMBIO 390R: Section 001

2010

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 494R: Section 011
  • MMBIO 494R: Section 004
  • MMBIO 695R: Section 004
  • LFSCI 494R: Section 009
  • MMBIO 494R: Section 011

2009

  • MMBIO 441 : Section 001
  • MMBIO 442 : Section 001
  • MMBIO 494R: Section 011

Publications

  • Carter JL, Morales R, Johnson SM. June 7, 2018. Chemotaxis based enrichment for transgenic animals containing the rol-6 marker. Pasadena, CA: Caltech Library.
  • Weber KS, Bridgewater LC, Jensen JL, Breakwell DP, Nielsen B, Johnson SM. April (2nd Quarter/Spring) 11, 2018. Personal microbiome analysis improves student engagement and interest in Immunology, Molecular Biology, and Genomics undergraduate courses . 4th ed.
  • Kieffer-Kwon KR, Nimura K, Rao SSP, Xu J, Jung S, Pekowska A, Dose M, Stevens E, Mathe E, Dong P, et alAugust 10, 2017. Myc Regulates Chromatin Decompaction and Nuclear Architecture during B Cell Activation. 4th ed.
  • Kempton CE, Weber KS, Johnson SM. April (2nd Quarter/Spring) 21, 2017. Method to increase undergraduate laboratory student confidence in performing independent research. 1st ed. Washington, DC: American Society for Microbiology.
  • Weber KS, Jensen JL, Johnson SM. August 4, 2015. Anticipation of personal genomics data enhances interest and learning environment in genomics and molecular biology undergraduate courses. 8th ed.
  • Kempton CE, Heninger JR, Johnson SM. August 5, 2014. Reproducibility and Consistency of In Vitro Nucleosome Reconstitutions Demonstrated by Invitrosome Isolation and Sequencing. 8th ed.
  • Locke G, Haberman D, Johnson SM, Morozov AV. April (2nd Quarter/Spring), 2013. Global remodeling of nucleosome positions in C elegans.
  • Kundaje A, Kyriazopoulou-Panagiotopoulou S, Libbrecht M, Smith CL, Raha D, Winters EE, Johnson SM, Snyder MP, Batzoglou S, Sidow A. September, 2012. Ubiquitous heterogeneity and asymmetry of the chromatin environment at regulatory elements.
  • Snyder M, Raha D, Johnson SM, Winters EE, Sidow A, Weng Z, Smith C, Lacroute P, Cayting P, Kundaje A. July (3rd Quarter/Summer), 2011. Nucleosome Position by MNase-seq from ENCODE/Stanford/BYU .
  • Valouev A, Johnson SM, Boyd SD, Smith CL, Fire AZ, Sidow A. June, 2011. Determinants of nucleosome organization in primary human cells.
  • Johnson SM. June, 2010. Painting a perspective on the landscape of nucleosome positioning. 6th ed.
  • Valouev A, Ichikawa J, Tonthat T, Stuart J, Ranade S, Peckham H, Zeng K, Malek JA, Costa G, McKernan K, et alMay, 2008. A high-resolution, nucleosome position map of C elegans reveals a lack of universal sequence-dictated positioning.
  • Johnson SM, Tan FJ, McCullough HL, Riordan DP, Fire AZ. October (4th Quarter/Autumn), 2006. Flexibility and constraint in the nucleosome core landscape of Caenorhabditis elegans chromatin.
  • Moreno-Herrero F, Seidel R, Johnson SM, Fire A, Dekker NH. May, 2006. Structural analysis of hyperperiodic DNA from Caenorhabditis elegans.
  • Esquela-Kerscher A, Johnson SM, Bai L, Saito K, Partridge J, Reinert KL, Slack FJ. October (4th Quarter/Autumn), 2005. Post-embryonic expression of C elegans microRNAs belonging to the lin-4 and let-7 families in the hypodermis and the reproductive system.
  • Johnson SM, Grosshans H, Shingara J, Byrom M, Jarvis R, Cheng A, Labourier E, Reinert KL, Brown D, Slack FJ. March, 2005. RAS is regulated by the let-7 microRNA family.
  • Lin S, Johnson SM, Abraham M, Vella MC, Pasquinelli A, Gamberi C, Gottlieb E, Slack FJ. May, 2003. The C elegans hunchback homolog, hbl-1 controls temporal patterning and is a probable microRNA target.
  • Johnson SM, Lin S, Slack FJ. May, 2003. The time of appearance of the C elegans let-7 microRNA is transcriptionally controlled utilizing a temporal regulatory element in its promoter.
  • Ma X, Husain T, Peng H, Lin S, Mironenko O, Maun N, Johnson SM, Tuck D, Berliner N, Krause DS, et alAugust, 2002. Development of a murine hematopoietic progenitor complementary DNA microarray using a subtracted complementary DNA library.

Presentations

  • Russell S, Johnson SM. Chromatin Accessibility in C elegans. American Society for Microbiology Intermountain Branch Meeting. Nolan received a Distinguished Poster Award for this. December, 2020.
  • Cole N, Johnson SM. Epigenetic Profiling of Human Peripheral Blood Monocytes. American Society for Microbiology Intermountain Branch Meeting. Nolan received a Distinguished Poster Award for this. December, 2020.
  • Cole N, Johnson SM. An analysis of modified-histone sequence preference in R. Roseman University Research Symposium. March, 2020.
  • Carter JL, Kempton CE, Johnson SM. Manipulation of Genetic Regulation by Nucleosome Positioning. 22nd Interational C elegans Conference. June, 2019.
  • Garner D, Johnson SM. The limits of DNA influence on Nucleosome Positioning. 22nd International C elegans Conference. June, 2019.
  • Wilson N, Johnson SM. Catching Your Attention: The Effect of Textual Presentation Format on Reader Comprehension of New Vocabulary. American Society for Microbiology Intermountain Branch Meeting. April, 2019.
  • Ricks S, Bates DA, Johnson SM. In Vitro Transcription from Reconstituted Chromatin Reported by RNA Mango. American Society for Microbiology Intermountain Branch Meeting. April, 2019.
  • Bates DA, Johnson SM. Neutralization of proximal end-bias from in-vitro reconstituted nucleosomes through read recovery. American Society for Microbiology Intermountain Branch Meeting. April, 2019.
  • Lundgren AJ, Carter JL, Johnson SM. Overcoming Nucleosome Position Dependent Gene Silencing Via Positioning Manipulation. American Society for Microbiology Intermountain Branch Meeting. April, 2019.
  • Carter JL, Johnson SM. Overcoming Transgene Silencing Via Manipulation of Nucleosome Positioning. American Society for Microbiology Intermountain Branch Meeting. April, 2019.
  • Hales ES, Grasley M, Bates DA, Johnson SM. Restoring Transgene GFP Expression via RNAi Knockdown of Gene Silencing Elements. American Society for Microbiology Intermountain Branch Meeting. April, 2019.
  • Garner D, Johnson SM. The limits of DNA influence on Nucleosome Positioning. American Society for Microbiology Intermountain Branch Meeting. April, 2019.
  • King CA, Schmidt B, Bates DA, Johnson SM. The relationship between histone modifications and nucleosome sequence motifs. American Society for Microbiology Intermountain Branch Meeting. April, 2019.
  • Garner D, Johnson SM. The limits of DNA influence on Nucleosome Positioning. College Undergraduate Research Awards. April, 2019.
  • Wilson N, Johnson SM. Catching Your Attention: The Effect of Textual Presentation Format on Reader Comprehension of New Vocabulary. College of Life Sciences Undergraduate Poster Competition. March, 2019.
  • Lundgren AJ, Carter JL, Johnson SM. Overcoming Nucleosome Position Dependent Gene Silencing Via Positioning Manipulation. College of Life Sciences Undergraduate Poster Competition. March, 2019.
  • Hales ES, Grasley M, Bates DA, Johnson SM. Restoring Transgene GFP Expression via RNAi Knockdown of Gene Silencing Elements. College of Life Sciences Undergraduate Poster Competition. March, 2019.
  • Garner D, Johnson SM. The limits of DNA influence on Nucleosome Positioning. College of Life Sciences Undergraduate Poster Competition. March, 2019.
  • Bates D, Earl A, Johnson SM. Nucleosomes, histone modifications, and DNA sequence preference. Gordon Research Conference, Chromatin Structure and Function, Chromatin Encounters: Shaping Genome Architecture and Function. July, 2018.
  • Bates D, Earl A, Johnson SM. Nucleosomes, histone modifications, and DNA sequence preference. Gordon Research Seminar, Chromatin Structure and Function, Chromatin: Plasticity and Genome Regulation in Physiology and Disease. July, 2018.
  • Carter J, Johnson SM. Locus-Specific Nucleosome Positioning Method Used to Evaluate Engineered Nucleosome Positioning in Caenorhabditis elegans. American Society of Microbiology (Tri-Branch Meeting). April, 2018.
  • Tueller JA, Jensen JL, Breakwell DP, Johnson SM, Weber KS. Personal microbiome analysis enhances student engagement in life sciences courses. American Society of Microbiology (Tri-Branch Meeting). April, 2018.
  • Adams KD, Johnson SM. Understanding Key Epigenetic Changes During Differentiation and Polarization of Human Macrophages from Peripheral Blood Monocytes. American Society of Microbiology (Tri-Branch Meeting). April, 2018.
  • Earl A, Bates D, Johnson SM. Histone Post-Translational Modifications and Nucleosome Positioning: A New Layer in the Histone Code Hypothesis?. HBLL/College of Life Sciences Undergraduate Research Poster Competition. March, 2018.
  • Hein H, Johnson SM. Silencing Gene Silencing. HBLL/College of Life Sciences Undergraduate Research Poster Competition. March, 2018.
  • Garner D, Carter J, Johnson SM. Single Nucleotide Polymorphisms and Their Influence in Nucleosome Positioning Variance Among Caenorhabditis elegans. HBLL/College of Life Sciences Undergraduate Research Poster Competition. March, 2018.
  • Morales R, Carter J, Johnson SM. Using Rol-6 and Chemotaxis to Isolate Transgenic C elegans. HBLL/College of Life Sciences Undergraduate Research Poster Competition. March, 2018.
  • Wilson N, Johnson SM. Exploring the Effect of Mercury on Epigenetic Gene Expression in C elegans. Roseman University Research Symposium. March, 2018.
  • Earl A, Johnson SM. Histone Post-Translational Modifications and Nucleosome Positioning: A New Layer in the Histone Code Hypothesis?. Roseman University Research Symposium. March, 2018.
  • Carter J, Johnson SM. Locus-Specific Nucleosome Positioning Method Used to Evaluate Engineered Nucleosome Positioning in Caenorhabditis elegans. Roseman University Research Symposium. March, 2018.
  • Hein H, Johnson SM. Silencing Gene Silencing. Roseman University Research Symposium. March, 2018.
  • Garner D, Johnson SM. Single Nucleotide Polymorphisms and Their Influence in Nucleosome Positioning Variance Among Caenorhabditis elegans. Roseman University Research Symposium. March, 2018.
  • Adams K, Johnson SM. Understanding Key Epigenetic Changes During Differentiation and Polarization of Human Macrophages from Peripheral Blood Monocytes. Roseman University Research Symposium. March, 2018.
  • Johnson SM. Nucleosome Positioning. Invited lecture, Department of Microbiology and Biochemistry, Rutgers University. September, 2015.
  • Johnson SM. Nucleosome Positioning, Meta-Shapes and Transgene Expression. Invited seminar, Department of Molecular Biology and Biochemistry, Rutgers University. September, 2015.
  • Johnson SM. Chromatin Architecture, Meta-Shapes and Transgene Expression. Invited seminar, MCDB Genetics Training Grant Seminar, Yale University. March, 2014.
  • Johnson SM. Chromatin Patterns, Meta-Shapes and Transgene Expression. Invited Seminar: Biology Department Summer Seminar, San Diego State University. June, 2013.
  • Johnson SM. Evaluating, Defining and Applying Sequence-Directed Nucleosome Positioning. Invited Seminar: Center for NanoBiotechnology and Life Sciences Research, Alabama State University. April, 2013.
  • Johnson SM. Unraveling The Patterns That Turn On Genes. Research Revolution '13. February, 2013.
  • Johnson SM. Nucleosome Organization and Positioning: From human Cells to C elegans. The 2013 Southwest Regional Meeting of the Society for Developmental Biology. February, 2013.
  • Johnson SM. Nucleosome Organization and Positioning in Human Cells. 5th Annual GeneExpression Systems-Epigenomics, Sequencing & SNiPomics 2012 meeting. July, 2012.
  • Johnson SM. Keynote Address: Chromatin Architecture-Turning On and Off Genes. 6th Annual Biotechnology Symposium. April, 2012.
  • Johnson SM. Gene Therapy-Turning On and Off Genes. Research Revolution '12. February, 2012.
  • Johnson SM. Chromatin Architecture, Nucleosome Positioning and Gene Regulation. Invited Seminar: Department of Physics and Biophysics Graduate Program Symposium, The Ohio State University. January, 2012.
  • Johnson SM. MMBio Club Interactive Presentation; Experimental Design and Research Techniques. MMBio Club Presentation. March, 2011.
  • Johnson SM. Nucleosome Organization in Primary Human Cells. Keystone Symposia/Histone Code: Fact or Fiction?. January, 2011.
  • Johnson SM. Chromatin Architecture and Nucleosome Organization in Primary Human Cells. CTE Seminar Series. December, 2010.
  • Johnson SM. Epigenetics, Chromatin Architecture and Nucleosome Positioning. Current Topics in Molecular Life Sciences Seminar. October, 2010.
  • Johnson SM, Valouev A, Boyd S, Smith C, Sidow A, Fire A. Genome-wide Mapping and Analysis of Nucleosome Positions in Multiple Human Tissues. Albany 2009: 16th Conversation, SUNY Albany. wwwjbsdonlinecom/c4258/Topics-Speakers-Chairs-and-Guests-p16629html. June, 2009.
  • Johnson SM. Parallel evolution of hypotheses and sequencing technologies in understanding chromatin architecture. Invited Seminar. October, 2008.
  • Johnson SM. Contrasting methods of gene regulation: from small RNAs to the chromatin landscape. Invited Nobel Week Seminar: Department of Oncology. December, 2006.