Jason M. Johnson

Definition, conservation and epigenetics of housekeeping and tissue-enriched genes (2009)

She, Xinwei, Rohl, Carol A, Castle, John C, Kulkarni, Amit V, Johnson, Jason M, Chen, Ronghua

Abstract Background Housekeeping genes (HKG) are constitutively expressed in all tissues while tissue-enriched genes (TEG) are expressed at a much higher level in a single tissue type than in others....

Expression of Alternatively Spliced Sodium Channel �-Subunit Genes UNIQUE SPLICING PATTERNS ARE OBSERVED IN DORSAL ROOT GANGLIA* (2008)

Christopher K. Raymond, John Castle, Philip Garrett-engele, Christopher D. Armour, Zhengyan Kan, Nicholas Tsinoremas, ...

Molecular medicine requires the precise definition of drug targets, and tools are now in place to provide genome-wide information on the expression and alternative splicing patterns of any known...

Exon and junction microarrays detect widespread mouse strain- and sex-bias expression differences (2008)

Su, Wan-Lin, Modrek, Barmak, GuhaThakurta, Debraj, Edwards, Stephen, Shah, Jyoti K, Kulkarni, Amit V, ...

Abstract Background Studies have shown that genetic and sex differences strongly influence gene expression in mice. Given the diversity and complexity of transcripts produced by alternative splicing,...

Mapping the Genetic Architecture of Gene Expression in Human Liver (2008)

Eric E. Schadt, Cliona Molony, Eugene Chudin, Ke Hao, Xia Yang, Pek Y. Lum, ...

Genetic variants that are associated with common human diseases do not lead directly to disease, but instead act on intermediate, molecular phenotypes that in turn induce changes in higher-order...

NMR Solution Structure of the Antitumor Compound PT523 and NADPH in the Ternary Complex with Human Dihydrofolate Reductase (2007)

Jason M. Johnson, Elizabeth M. Meiering, Joel E. Wright, Jorge Pardo, Andre Rosowsky, Gerhard Wagner

: The antitumor compound PT523 [N R -(4-amino-4-deoxypteroyl)-N # -hemiphthaloyl-L-ornithine] was found to have an inhibition constant (K i ) of 0.35 ( 0.10 pM against human dihydrofolate reductase...

Pathway and gene-set activation measurement from mRNA expression data: the tissue distribution of human pathways (2006)

Levine, David M, Haynor, David R, Castle, John C, Stepaniants, Sergey B, Pellegrini, Matteo, Mao, Mao, ...

Abstract Background Interpretation of lists of genes or proteins with altered expression is a critical and time-consuming part of microarray and proteomics research, but relatively little attention...

Position-specific chemical modification of siRNAs reduces "off-target" transcript silencing (2006)

Jackson, Aimee L., Burchard, Julja, Leake, Devin, Reynolds, Angela, Schelter, Janell, Guo, Jie, ...

Transfected siRNAs regulate numerous transcripts sharing limited complementarity to the RNA duplex. This unintended (“off-target”) silencing can hinder the use of RNAi to define gene function....

Position-specific chemical modification of siRNAs reduces "off-target" transcript silencing (2006)

Jackson, Aimee L., Burchard, Julja, Leake, Devin, Reynolds, Angela, Schelter, Janell, Guo, Jie, ...

Transfected siRNAs regulate numerous transcripts sharing limited complementarity to the RNA duplex. This unintended (“off-target”) silencing can hinder the use of RNAi to define gene function....

Position-specific chemical modification of siRNAs reduces "off-target" transcript silencing (2006)

Jackson, Aimee L., Burchard, Julja, Leake, Devin, Reynolds, Angela, Schelter, Janell, Guo, Jie, ...

Transfected siRNAs regulate numerous transcripts sharing limited complementarity to the RNA duplex. This unintended (“off-target”) silencing can hinder the use of RNAi to define gene function....

Simple, quantitative primer-extension PCR assay for direct monitoring of microRNAs and short-interfering RNAs (2005)

RAYMOND, CHRISTOPHER K., ROBERTS, BRIAN S., GARRETT-ENGELE, PHILLIP, LIM, LEE P., JOHNSON, JASON M.

There has been a surge of interest in the biology of microRNAs and the technology of RNA interference. We describe a simple, robust, inexpensive assay for quantitative analysis of microRNAs and...

Evolutionarily conserved and diverged alternative splicing events show different expression and functional profiles (2005)

Kan, Zhengyan, Garrett-Engele, Philip W., Johnson, Jason M., Castle, John C.

To better decipher the functional impact of alternative splicing, we classified alternative splicing events in 10 818 pairs of human and mouse genes based on conservation at genome and transcript...

A comprehensive transcript index of the human genome generated using microarrays and computational approaches (2004)

Schadt, Eric E, Edwards, Stephen W, GuhaThakurta, Debraj, Holder, Dan, Ying, Lisa, Svetnik, Vladimir, ...

Abstract Background Computational and microarray-based experimental approaches were used to generate a comprehensive transcript index for the human genome. Oligonucleotide probes designed from...

Optimization of oligonucleotide arrays and RNA amplification protocols for analysis of transcript structure and alternative splicing (2003)

Castle, John, Garrett-Engele, Phil, Armour, Christopher D, Duenwald, Sven J, Loerch, Patrick M, Meyer, Michael R, ...

Abstract Microarrays offer a high-resolution means for monitoring pre-mRNA splicing on a genomic scale. We have developed a novel, unbiased amplification protocol that permits labeling of entire...

Protein family annotation in a multiple alignment viewer (2003)

Johnson, Jason M., Mason, Keith, Moallemi, Ciamac, Xi, Hualin, Somaroo, Shyamal, Huang, Enoch S.

Summary: The Pfaat protein family alignment annotation tool is a Java-based multiple sequence alignment editor and viewer designed for protein family analysis. The application merges display features...

Structure and function prediction from sequence in bacterial protein families / (1999)

Johnson, Jason M.

Thesis (Ph. D., Committee on Higher Degrees)--Harvard University, 1999.

Alignment and structure prediction of divergent protein families: periplasmic and outer membrane proteins of bacterial efflux pumps (1999)

Jason M. Johnson, George M. Church

The emergence of drug-resistant strains of bacteria is a signi®cant and growing human health problem. Active ef¯ux pumps with broad speci-®city are involved in the intrinsic and acquired

Predicting ligand-binding function in families of bacterial receptors

Johnson, Jason M., Church, George M.

The three-dimensional fold of a new protein sequence can often be inferred directly from sequence homology to a protein of known structure. The function of a new protein sequence is more difficult to...

Optimization of oligonucleotide arrays and RNA amplification protocols for analysis of transcript structure and alternative splicing

Castle, John, Garrett-Engele, Phil, Armour, Christopher D, Duenwald, Sven J, Loerch, Patrick M, Meyer, Michael R, ...

A novel, unbiased amplification protocol has been developed that permits labeling of entire transcripts. Also, hybridization conditions, probe characteristics, and analysis algorithms were optimized...

A comprehensive transcript index of the human genome generated using microarrays and computational approaches

Schadt, Eric E, Edwards, Stephen W, GuhaThakurta, Debraj, Holder, Dan, Ying, Lisa, Svetnik, Vladimir, ...

A combination of microarray data with extensive genome annotations resulted in a set of 28,456 experimentally supported transcripts, providing the first experiment-driven annotation of the human...

Evolutionarily conserved and diverged alternative splicing events show different expression and functional profiles

Kan, Zhengyan, Garrett-Engele, Philip W., Johnson, Jason M., Castle, John C.

To better decipher the functional impact of alternative splicing, we classified alternative splicing events in 10 818 pairs of human and mouse genes based on conservation at genome and transcript...

Simple, quantitative primer-extension PCR assay for direct monitoring of microRNAs and short-interfering RNAs

RAYMOND, CHRISTOPHER K., ROBERTS, BRIAN S., GARRETT-ENGELE, PHILLIP, LIM, LEE P., JOHNSON, JASON M.

There has been a surge of interest in the biology of microRNAs and the technology of RNA interference. We describe a simple, robust, inexpensive assay for quantitative analysis of microRNAs and...

Regulation of RNA splicing by the methylation-dependent transcriptional repressor methyl-CpG binding protein 2

Young, Juan I., Hong, Eugene P., Castle, John C., Crespo-Barreto, Juan, Bowman, Aaron B., Rose, Matthew F., ...

Rett syndrome (RTT) is a postnatal neurodevelopmental disorder characterized by the loss of acquired motor and language skills, autistic features, and unusual stereotyped movements. RTT is caused by...

The Long-term Effects of Gastric Bypass on Vitamin D Metabolism

Johnson, Jason M., Maher, James W., DeMaria, Eric J., Downs, Robert W., Wolfe, Luke G., Kellum, John M.

Routine monitoring of 25-OH-vitamin D and parathormone levels at annuals visits for gastric bypass patients disclosed a high incidence of vitamin D insufficiency and secondary hyperparathyroidism....

Predicting ligand-binding function in families of bacterial receptors

Johnson, Jason M., Church, George M.

The three-dimensional fold of a new protein sequence can often be inferred directly from sequence homology to a protein of known structure. The function of a new protein sequence is more difficult to...

Optimization of oligonucleotide arrays and RNA amplification protocols for analysis of transcript structure and alternative splicing

Castle, John, Garrett-Engele, Phil, Armour, Christopher D, Duenwald, Sven J, Loerch, Patrick M, Meyer, Michael R, ...

A novel, unbiased amplification protocol has been developed that permits labeling of entire transcripts. Also, hybridization conditions, probe characteristics, and analysis algorithms were optimized...

A comprehensive transcript index of the human genome generated using microarrays and computational approaches

Schadt, Eric E, Edwards, Stephen W, GuhaThakurta, Debraj, Holder, Dan, Ying, Lisa, Svetnik, Vladimir, ...

A combination of microarray data with extensive genome annotations resulted in a set of 28,456 experimentally supported transcripts, providing the first experiment-driven annotation of the human...

Evolutionarily conserved and diverged alternative splicing events show different expression and functional profiles

Kan, Zhengyan, Garrett-Engele, Philip W., Johnson, Jason M., Castle, John C.

To better decipher the functional impact of alternative splicing, we classified alternative splicing events in 10 818 pairs of human and mouse genes based on conservation at genome and transcript...

Regulation of RNA splicing by the methylation-dependent transcriptional repressor methyl-CpG binding protein 2

Young, Juan I., Hong, Eugene P., Castle, John C., Crespo-Barreto, Juan, Bowman, Aaron B., Rose, Matthew F., ...

Rett syndrome (RTT) is a postnatal neurodevelopmental disorder characterized by the loss of acquired motor and language skills, autistic features, and unusual stereotyped movements. RTT is caused by...

Simple, quantitative primer-extension PCR assay for direct monitoring of microRNAs and short-interfering RNAs

RAYMOND, CHRISTOPHER K., ROBERTS, BRIAN S., GARRETT-ENGELE, PHILLIP, LIM, LEE P., JOHNSON, JASON M.

There has been a surge of interest in the biology of microRNAs and the technology of RNA interference. We describe a simple, robust, inexpensive assay for quantitative analysis of microRNAs and...

The Long-term Effects of Gastric Bypass on Vitamin D Metabolism

Johnson, Jason M., Maher, James W., DeMaria, Eric J., Downs, Robert W., Wolfe, Luke G., Kellum, John M.

Routine monitoring of 25-OH-vitamin D and parathormone levels at annuals visits for gastric bypass patients disclosed a high incidence of vitamin D insufficiency and secondary hyperparathyroidism....

Position-specific chemical modification of siRNAs reduces “off-target” transcript silencing

Jackson, Aimee L., Burchard, Julja, Leake, Devin, Reynolds, Angela, Schelter, Janell, Guo, Jie, ...

Transfected siRNAs regulate numerous transcripts sharing limited complementarity to the RNA duplex. This unintended (“off-target”) silencing can hinder the use of RNAi to define gene function....

Pathway and gene-set activation measurement from mRNA expression data: the tissue distribution of human pathways

Levine, David M, Haynor, David R, Castle, John C, Stepaniants, Sergey B, Pellegrini, Matteo, Mao, Mao, ...

A comparison of five different measures of pathway expression and a public map of pathway expression in human tissues are presented.

Transcripts Targeted by the MicroRNA-16 Family Cooperatively Regulate Cell Cycle Progression▿ †

Linsley, Peter S., Schelter, Janell, Burchard, Julja, Kibukawa, Miho, Martin, Melissa M., Bartz, Steven R., ...

microRNAs (miRNAs) are abundant, ∼21-nucleotide, noncoding regulatory RNAs. Each miRNA may regulate hundreds of mRNA targets, but the identities of these targets and the processes they regulate are...

Mapping the Genetic Architecture of Gene Expression in Human Liver

Schadt, Eric E, Molony, Cliona, Chudin, Eugene, Hao, Ke, Yang, Xia, Lum, Pek Y, ...

Genetic variants that are associated with common human diseases do not lead directly to disease, but instead act on intermediate, molecular phenotypes that in turn induce changes in higher-order...

ACC2 Is Expressed at High Levels Human White Adipose and Has an Isoform with a Novel N-Terminus

Castle, John C., Hara, Yoshikazu, Raymond, Christopher K., Garrett-Engele, Philip, Ohwaki, Kenji, Kan, Zhengyan, ...

Acetyl-CoA carboxylases ACC1 and ACC2 catalyze the carboxylation of acetyl-CoA to malonyl-CoA, regulating fatty-acid synthesis and oxidation, and are potential targets for treatment of metabolic...

A postnatal switch of CELF and MBNL proteins reprograms alternative splicing in the developing heart

Kalsotra, Auinash, Xiao, Xinshu, Ward, Amanda J., Castle, John C., Johnson, Jason M., Burge, Christopher B., ...

From a large-scale screen using splicing microarrays and RT-PCR, we identified 63 alternative splicing (AS) events that are coordinated in 3 distinct temporal patterns during mouse heart development....