Results 21 to 30 of about 681,049 (265)

Serum tryptophan, kynurenine, phenylalanine, tyrosine and neopterin concentrations in 100 healthy blood donors

Pteridines, 2015
Formation of neopterin, a biomarker of the activated human immune system, is linked with tryptophan (TRP) and phenylalanine (PHE) metabolism. To obtain normal values, in this study, serum concentrations of neopterin as well as of TRP, PHE and their ...
Geisler Simon, Mayersbach Peter, Becker Kathrin, Schennach Harald, Fuchs Dietmar, Gostner Johanna M.   +5 more
doaj   +1 more source

Structural basis of tubulin tyrosination by tubulin tyrosine ligase [PDF]

Journal of Cell Biology, 2013
Tubulin tyrosine ligase (TTL) catalyzes the post-translational retyrosination of detyrosinated α-tubulin. Despite the indispensable role of TTL in cell and organism development, its molecular mechanism of action is poorly understood. By solving crystal structures of TTL in complex with tubulin, we here demonstrate that TTL binds to the α and β subunits
Prota Andrea E., Magiera Maria M., Kuijpers Marijn, Bargsten Katja, Frey Daniel, Wieser Mara, Jaussi Rolf, Hoogenraad Casper C., Kammerer Richard A., Janke Carsten, Steinmetz Michel O.   +10 more
openaire   +4 more sources

Phosphorylation of (Ser 291) in the linker insert of Syk negatively regulates ITAM signaling in platelets

Platelets
Receptor-induced tyrosine phosphorylation of spleen tyrosine kinase (Syk) has been studied extensively in hematopoietic cells. Metabolic mapping and high-resolution mass spectrometry, however, indicate that one of the most frequently detected ...
Carol Dangelmaier, Hymavathi Reddy Vari, Dhruv N Vajipayajula, Manal Elzoheiry, Monica Wright, Ashvin Iyer, Alexander Y Tsygankov, Satya P Kunapuli   +7 more
doaj   +1 more source

Hawkinsinuria With Direct Hyperbilirubinemia in Egyptian-Lebanese Boy

Frontiers in Pediatrics, 2019
Tyrosinemia type III is the rarest type of tyrosinemia, because of a mutation in 4-OH-phenylpyruvate dioxygenase (HPD). This causes two different types of diseases with different modes of inheritance: tyrosinemia type III and hawkinsinuria. Hawkinsinuria
Hassan El Khatib, Bilal Asaad, Aisha Zaylaa, Farah Awad, Mariam Sbeity, Sirin Mneimneh, Georges Haber, Zeina Naja, Mariam Rajab   +8 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Detection of tyrosine phosphorylated proteins in trichinella spiralis L1 larvae

Parasite, 2001
Western-blotting analysis showed the presence of tyrosine phosphorylated proteins in crude extracts of T. spiralis larvae and these phosphorylated proteins were located by immunofluorescence on the striations of the larval cuticle.
Allegretti S., Beaumont V., Robert-Gangneux F., Creuzet C., Roisin M.P., Dupouy-Camet J.   +5 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Biosynthesis of food constituents: Amino acids: 2. The alanine-valine-leucine, serine-cysteine-glycine, and aromatic and heterocyclic amino acids groups - a review

Czech Journal of Food Sciences, 2006
This review article gives a survey of principal pathways that lead to the biosynthesis of the proteinogenic amino acids of the alanine-valine-leucine group starting with pyruvic acid from the glycolytic pathway and serine-cysteine-glycine group starting ...
Jan Velíšek, Karel Cejpek
doaj   +1 more source

Determination of Tyrosine in Artificial Urine Using a Screen-Printed Electrode Modified with tetrathiafulvalene-tetracyanoquinodimethane/ionic Liquid Conductive Gel

International Journal of Electrochemical Science, 2020
In this study, the screen-printed electrode (SPE) was developed for detection of tyrosine based on tetrathiafulvalene-tetracyanoquinodimethane/ionic liquid conductive gel.
Xiaoping Zhang, Xiatong Li, Xinyue Pei, Ting Shu, Qing Min, Shi Wang   +5 more
doaj   +1 more source

Tyrosine-Dependent Phenotype Switching Occurs Early in Many Primary Melanoma Cultures Limiting Their Translational Value

Frontiers in Oncology, 2021
The use of patient-derived primary cell cultures in cancer preclinical assays, including drug screens and genotoxic studies, has increased in recent years.
Ahmad Najem, Jasper Wouters, Jasper Wouters, Mohammad Krayem, Florian Rambow, Florian Rambow, Malak Sabbah, François Sales, François Sales, Ahmad Awada, Ahmad Awada, Stein Aerts, Stein Aerts, Fabrice Journe, Fabrice Journe, Jean-Christophe Marine, Jean-Christophe Marine, Ghanem E. Ghanem   +17 more
doaj   +1 more source