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Related to Tyrosin: tryptophan, phenylalanin


n.1.(Physiol. Chem.) A white crystalline nitrogenous substance<-amino acid-=""> present in small amount in the pancreas and spleen, and formed in large quantity from the decomposition of proteid matter by various means, - as by pancreatic digestion, by putrefaction as of cheese, by the action of boiling acids, etc. Chemically, it consists of oxyphenol and amidopropionic acid, and by decomposition yields oxybenzoic acid, or some other benzol derivative.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Nessler's reagent, Tyrosin 99%, Carboxy Methyl Cellulose (CMC), phenol red and foline phenol reagent were purchased from Sigma Aldrich, USA.
an enzyme that catalyzes the oxidation of phenolic compounds, such as tyrosin, which originates a complex molecular cascade that culminates with the formation of a dark pigment (melanin).
Bahjat, Quantum Chemical QSAR Study of 1- phenyl- X-benzimidazoles as Inhibitors of PDGFRT Tyrosin Kinase, Int.
Spengler, "Uber die Bildung von Isochinolinderivaten durch Einwirkung von Methylal auf Phenylothylamin, Phenyl-alanin und Tyrosin," Berichte der Deutschen Chemischen Gesellschaft, vol.
Upon the activation of JAK2, the tyrosin residues on the catalytic sites were phosphorylated, which subsequently recruited the STAT3 protein containing the SH2 domain [33, 34].
Unlike CD3zeta, Fc[epsilon]R[gamma] does not bind the protein kinase associated with the zeta chain (ZAP[zeta]), but conversely connects with spleen tyrosin kinase (Syk), which results in the increase of calcium level after binding with TCR [31].
In addition PTPN22 (protein tyrosin phosphatase), CTLA4, and IL2RA genes have also been shown as candidates for T1DM due to their role in T-cell signaling.
Upon the results, the obvious whitening effect of salidroside in vivo was observed which reminded that the proposed mechanism of action might be associated with the inhibition of oxidation of tyrosin and L-DOPA followed by synthesis of melanin and skin tanning (Olivares and Solano 2009).
[12] Anson, M.L., 1938, "The estimation of papain, tyrosin, papain and cathepsin with haemoglobin," J.