Results 51 to 60 of about 54,906 (269)

Ornithine decarboxylase activity, a clinical biomarker for evaluating cancer chemopreventive efficacy of phytomolecules [PDF]

open access: yes, 2011
Biomarkers of cancer have made a strong traipse in predicting the disease pattern and contributed significantly to the understanding of tumour state, progression, characteristics and response to therapies.
Nusrat Masood   +2 more
core   +2 more sources

Biomedical aspects of pyridoxal 5 -phosphate availability

open access: yesFrontiers in Bioscience, 2012
The biologically active form of vitamin B6, pyridoxal 5'-phosphate (PLP), is a cofactor in over 160 enzyme activities involved in a number of metabolic pathways, including neurotransmitter synthesis and degradation. In humans, PLP is recycled from food and from degraded PLP-dependent enzymes in a salvage pathway requiring the action of pyridoxal kinase,
DI SALVO, Martino Luigi   +2 more
openaire   +3 more sources

Comparing the sensitivity of pyridoxal-5-phosphate, homocysteine and neopterin in coronary heart disease

open access: yesPteridines, 2002
Blood serum pyridoxal-5-phosphate, homocysteine and neopterin concentrations have been examined in 30 healthy individuals and 87 patients with coronary heart disease, verified by coronary angiography.
Rudzite Vera   +7 more
doaj   +1 more source

It takes two to tango: defining an essential second active site in pyridoxal 5'-phosphate synthase. [PDF]

open access: yesPLoS ONE, 2011
The prevalent de novo biosynthetic pathway of vitamin B6 involves only two enzymes (Pdx1 and Pdx2) that form an ornate multisubunit complex functioning as a glutamine amidotransferase.
Cyril Moccand   +2 more
doaj   +1 more source

Crystal structure of L-aspartate aminotransferase from Schizosaccharomyces pombe.

open access: yesPLoS ONE, 2019
L-aspartate aminotransferase is a pyridoxal 5'-phosphate-dependent transaminase that catalyzes reversible transfer of an α-amino group from aspartate to α-ketoglutarate or from glutamate to oxaloacetate.
Soo Yeon Jeong   +2 more
doaj   +1 more source

Structural Basis of the Substrate Specificity and Enzyme Catalysis of a Papaver somniferum Tyrosine Decarboxylase

open access: yesFrontiers in Molecular Biosciences, 2017
Tyrosine decarboxylase (TyDC), a type II pyridoxal 5′-phosphate decarboxylase, catalyzes the decarboxylation of tyrosine. Due to a generally high sequence identity to other aromatic amino acid decarboxylases (AAADs), primary sequence information is not ...
Huai Guan   +12 more
doaj   +1 more source

Identification of atropine-and P2X1 receptor antagonist-reistant, neurogenic contractions of the urinary bladder [PDF]

open access: yes, 2007
Acetylcholine and ATP are excitatory cotransmitters in parasympathetic nerves. We used P2X1 receptor antagonists to further characterize the purinergic component of neurotransmission in isolated detrusor muscle of guinea pig urinary bladder.
Gallagher, Gemma   +3 more
core   +1 more source

A loss of Pdxk model of Parkinson disease in Drosophila can be suppressed by Buffy

open access: yesBMC Research Notes, 2017
Background The identification of a DNA variant in pyridoxal kinase (Pdxk) associated with increased risk to Parkinson disease (PD) gene led us to study the inhibition of this gene in the Dopa decarboxylase (Ddc)-expressing neurons of the well-studied ...
P. Githure M’Angale, Brian E. Staveley
doaj   +1 more source

Functional Characterization of the Eukaryotic Cysteine Desulfurase Nfs1p from Saccharomyces cerevisiae [PDF]

open access: yes, 2004
Previous studies have indicated that the essential protein Nfs1 performs a crucial role in cellular iron-sulfur (Fe/S) protein maturation. The protein is located predominantly in mitochondria, yet low amounts are present in cytosol and nucleus.
Balk   +73 more
core   +3 more sources

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