Tandem mass spectrometry identifies many mouse brain O-GlcNAcylated proteins including EGF domain-specific O-GlcNAc transferase targets

JF Alfaro, CX Gong, ME Monroe… - Proceedings of the …, 2012 - National Acad Sciences
O-linked N-acetylglucosamine (O-GlcNAc) is a reversible posttranslational modification of
Ser and Thr residues on cytosolic and nuclear proteins of higher eukaryotes catalyzed by O-…

An enzyme-coupled continuous spectrophotometric assay for S-adenosylmethionine-dependent methyltransferases

…, DRP Wynn, EL Karschner, JF Alfaro… - Analytical …, 2006 - Elsevier
Modification of small molecules and proteins by methyltransferases affects a wide range of
biological processes. Here, we report an enzyme-coupled continuous spectrophotometric …

Synthesis of LuxS inhibitors targeting bacterial cell− cell communication

JF Alfaro, T Zhang, DRP Wynn, EL Karschner… - Organic …, 2004 - ACS Publications
Quorum sensing is a process by which bacteria sense cell density. This cell−cell communication
process is mediated by autoinducers. A cross-species messenger, autoinducer-2 (AI-2) …

The impact of single nucleotide polymorphisms on human aldehyde oxidase

…, M Terao, E Garattini, C Teutloff, JF Alfaro… - Drug metabolism and …, 2012 - ASPET
Aldehyde oxidase (AO) is a complex molybdo-flavoprotein that belongs to the xanthine
oxidase family. AO is active as a homodimer, and each 150-kDa monomer binds two distinct […

Studies on the mechanism of aldehyde oxidase and xanthine oxidase

JF Alfaro, JP Jones - The Journal of organic chemistry, 2008 - ACS Publications
DFT calculations support a concerted mechanism for xanthine oxidase and aldehyde
oxidase hydride displacement from the sp 2 carbon of 6-substituted 4-quinazolinones. The …

[HTML][HTML] Metabolic Reprogramming during Purine Stress in the Protozoan Pathogen Leishmania donovani

JL Martin, PA Yates, R Soysa, JF Alfaro, F Yang… - PLoS …, 2014 - journals.plos.org
The ability of Leishmania to survive in their insect or mammalian host is dependent upon an
ability to sense and adapt to changes in the microenvironment. However, little is known …

Enzyme-Catalyzed Transfer of a Ketone Group from an S-Adenosylmethionine Analogue: A Tool for the Functional Analysis of Methyltransferases

…, HG Sun, T Zang, BJ Kim, JF Alfaro… - Journal of the …, 2010 - ACS Publications
S-Adenosylmethionine (AdoMet or SAM)-dependent methyltransferases belong to a large
and diverse family of group-transfer enzymes that perform vital biological functions on a host …

Chemical synthesis of S-ribosyl-L-homocysteine and activity assay as a LuxS substrate

G Zhao, W Wan, S Mansouri, JF Alfaro… - Bioorganic & Medicinal …, 2003 - Elsevier
Bacterial quorum sensing is mediated by autoinducers, small signaling molecules
generated by bacteria. It has been proposed that the LuxS enzyme converts S-ribosyl-l-homocysteine …

Chemo-enzymatic detection of protein isoaspartate using protein isoaspartate methyltransferase and hydrazine trapping

JF Alfaro, LA Gillies, HG Sun, S Dai, T Zang… - Analytical …, 2008 - ACS Publications
Isoaspartate formation is a ubiquitous post-translation modification arising from spontaneous
asparagine deamidation or aspartate isomerization. The formation of isoaspartate inserts a …

Purification and mechanism of human aldehyde oxidase expressed in Escherichia coli

JF Alfaro, CA Joswig-Jones, W Ouyang, J Nichols… - Drug metabolism and …, 2009 - ASPET
Human aldehyde oxidase 1 (AOX1) has been subcloned into a vector suitable for expression
in Escherichia coli, and the protein has been expressed. The resulting protein is active, …