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Journal of Psychiatric Research, 1982
The catecholamine hypothesis of affective disorders postulates that depression reflects inadequate norepinephrine activity at unspecified brain centers that regulate mood. In light of experimental data showing that the oral administration of tyrosine, precursor of the catecholamine series of neurotransmitters, can increase brain norepinephrine ...
Joanne Wojcik +3 more
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The catecholamine hypothesis of affective disorders postulates that depression reflects inadequate norepinephrine activity at unspecified brain centers that regulate mood. In light of experimental data showing that the oral administration of tyrosine, precursor of the catecholamine series of neurotransmitters, can increase brain norepinephrine ...
Joanne Wojcik +3 more
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Radiation Physics and Chemistry (1977), 1982
Abstract Blue fluorescence characteristics of dityrosine appeared in y -irradiated solutions of tyrosine, glycyl- L -tyrosine or polytyrosine (MW 110,000). The intensity of fluorescence was used for the determination of the dityrosine concentration in hydrolysed samples.
Grzegorz Boguta, Antoni M. Dancewicz
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Abstract Blue fluorescence characteristics of dityrosine appeared in y -irradiated solutions of tyrosine, glycyl- L -tyrosine or polytyrosine (MW 110,000). The intensity of fluorescence was used for the determination of the dityrosine concentration in hydrolysed samples.
Grzegorz Boguta, Antoni M. Dancewicz
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Regulation of Tyrosine Kinases by Tyrosine Phosphorylation [PDF]
, 1991 Protein kinases can be classified according to whether they phosphorylate phenolic (tyrosine) or aliphatic (serine and threonine) hydroxyl groups (Hunter and Cooper, 1985). Although there are now a few examples of kinases that seemingly break the rule (Howell et al., 1990), most tyrosine kinases differ from the serine/threonine kinases in their primary
Alasdair MacAuley +2 more
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Effect of the phosphonic analogue of tyrosine on tyrosine iodination
Amino Acids, 1994Depositing ofDL-1-amino-2-(p-hydroxyphenyl)-ethylphosphonic acid (Tyr-P) on the chicken embryo induced a dose dependent decrease of the iodine uptake by the embryonic thyroid. Tyr-P interfered on iodination of tyrosine when tested with hog thyroid peroxidase (TPO) and with bovine lactoperoxidase (LPO); the analogue was recognized by the two enzymes but
Eugène Neuzil, A. Iron, A. Cassaigne
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Inhibition of tyrosine phenol-lyase by tyrosine homologues
Amino Acids, 2016We have designed, synthesized, and evaluated tyrosine homologues and their O-methyl derivatives as potential inhibitors for tyrosine phenol lyase (TPL, E.C. 4.1.99.2). Recently, we reported that homologues of tryptophan are potent inhibitors of tryptophan indole-lyase (tryptophanase, TIL, E.C.
Giang T. Nguyen +2 more
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Biochimica et Biophysica Acta (BBA) - General Subjects, 1972
Abstract 1. 1. An enzyme: tyrosine α,β-amino mutase was isolated from cells of Bacillus brevis Vm4. 2. 2. Tyrosine α,β-amino mutase forms β-tyrosine from L -α-tyrosine. 3. 3. The optimal conditions for the reaction are at pH 8.5 and 37°C. 4. 4. ATP is the only cofactor required for the enzyme activity. 5. 5.
Z. Kurylo-Borowska, Tessa Abramsky
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Abstract 1. 1. An enzyme: tyrosine α,β-amino mutase was isolated from cells of Bacillus brevis Vm4. 2. 2. Tyrosine α,β-amino mutase forms β-tyrosine from L -α-tyrosine. 3. 3. The optimal conditions for the reaction are at pH 8.5 and 37°C. 4. 4. ATP is the only cofactor required for the enzyme activity. 5. 5.
Z. Kurylo-Borowska, Tessa Abramsky
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PHOSPHORYLATION OF TYROSINE AND THE REACTIVITY OF DIALKYL PHOSPHITES WITH TYROSINE [PDF]
Phosphorus, Sulfur, and Silicon and the Related Elements, 1995 Abstract New methods of synthesizing N-phosphoryltyrosine and N,O-bisphosphoryl tyrosine ester were studied. The reactivity of dialkyl phosphites with tyrosine was also studied.
Yong Jin +3 more
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Tyrosine phosphatases and their possible interplay with tyrosine kinases.
Ciba Foundation symposium, 1992Protein tyrosine phosphatases represent a new family of intracellular and receptor-linked enzymes. They are totally specific toward tyrosyl residues in proteins, and, with specific activities 10-1000-fold greater than those of the protein tyrosine kinases, they can be expected to tightly control the level of phosphotyrosine within the cell.
Fischer, E. H. +3 more
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Current Cancer Drug Targets, 2010
Over the last ten years, several new and therapeutically relevant cancer drugs targeting tyrosine kinases signaling pathways have been developed. Tyrosine kinase inhibitors (TKIs) are a pharmaceutical class of small molecules, orally available, well-tolerated, worldwide approved drugs for the treatment of several neoplasms, including lung, breast ...
NATOLI, Clara +5 more
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Over the last ten years, several new and therapeutically relevant cancer drugs targeting tyrosine kinases signaling pathways have been developed. Tyrosine kinase inhibitors (TKIs) are a pharmaceutical class of small molecules, orally available, well-tolerated, worldwide approved drugs for the treatment of several neoplasms, including lung, breast ...
NATOLI, Clara +5 more
openaire +4 more sources