A combined experimental and quantum mechanical investigation on some selected metal complexes of l-serine with first row transition metal cations

Mandal, Shilpi; Das, Gunajyoti; Askari, Hassan

doi:10.1016/j.molstruc.2014.10.048

Cited by 6 publications

(2 citation statements)

References 56 publications

(79 reference statements)

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Section: Resultsmentioning

confidence: 90%

“…The tyrosinase-inhibitory effect observed for serine-containing peptides may be because of their capacity to bind copper ions, which are needed for tyrosinase activity. The mechanism of copper binding by serine residues was reported by Mandal et al 47 who found that serine binds to copper ions through the oxygen and nitrogen atoms of its carboxylate and amino groups, respectively. As shown in Table 3, sulfur-containing amino acids (cysteine and methionine) in RBAlbH fractions tend to correlate with tyrosinase-inhibitory and copper-chelating activities (Figure 5a,b).…”

Section: ■ Results and Discussionmentioning

confidence: 90%

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Isolation and Identification of Tyrosinase-Inhibitory and Copper-Chelating Peptides from Hydrolyzed Rice-Bran-Derived Albumin

Kubglomsong

Theerakulkait

Reed

et al. 2018

J. Agric. Food Chem.

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Rice-bran albumin (RBAlb), which shows higher tyrosinase-inhibitory activity than other protein fractions, was hydrolyzed with papain to improve the bioactivity. The obtained RBAlb hydrolysate (RBAlbH) was separated into 11 peptide fractions by RP-HPLC. Tyrosinase inhibition and copper chelation activities decreased with increasing retention times of the peptide fractions. RBAlbH fraction 1, which exhibited the greatest activity, contained 13 peptides whose sequences were determined by using LC-MS/MS. Most of the peptide sequences contained features of previously reported tyrosinase-inhibitory and metal-chelating peptides, especially peptide SSEYYGGEGSSSEQGYYGEG. RBAlbH fraction 1 showed more effective tyrosinase inhibition (IC = 1.31 mg/mL) than citric acid (IC = 9.38 mg/mL), but it was less effective than ascorbic acid (IC = 0.03 mg/mL, P ≤ 0.05). It showed copper-chelating activity (IC = 0.62 mg/mL) stronger than that of EDTA (IC = 1.06 mg/mL, P ≤ 0.05). These results suggest that RBAlbH has potential as a natural tyrosinase inhibitor and copper chelator for application in the food and cosmetic industries.

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Section: Resultsmentioning

confidence: 90%

Section: ■ Results and Discussionmentioning

confidence: 90%

Isolation and Identification of Tyrosinase-Inhibitory and Copper-Chelating Peptides from Hydrolyzed Rice-Bran-Derived Albumin

Kubglomsong

Theerakulkait

Reed

et al. 2018

J. Agric. Food Chem.

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Crossed PtCoCu Alloy Nanocrystals with High‐Index Facets as Highly Active Catalyst for Methanol Oxidation Reaction

Xia

Zhang

Feng

et al. 2018

Adv Materials Inter

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Nanocrystals with high‐index facets are arousing growing attention in terms of rational design of efficient electrocatalysts. Herein, ternary PtCoCu alloys with distinct crossed and dendritic structure are prepared via one‐pot approach simply by tuning the amount of serine. The electrocatalytic performances for methanol oxidation reaction by these PtCoCu alloys are examined. It turns out that the {hk0} high‐index facets‐covered surfaces endow the crossed PtCoCu alloy with 4.2‐fold improvement of specific activity relative to commercial Pt/C and with superior stability. This work provides a facile and feasible route for synthesizing tri‐ or multimetallic alloys for electrocatalytic applications.

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Tyrosinase inhibitory peptides: Structure-activity relationship study on peptide chemical properties, terminal preferences and intracellular regulation of melanogenesis signaling pathways

Yap,

Gan

2024

Biochimica et Biophysica Acta (BBA) - General Subjects

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A combined experimental and quantum mechanical investigation on some selected metal complexes of l-serine with first row transition metal cations

Cited by 6 publications

References 56 publications

Isolation and Identification of Tyrosinase-Inhibitory and Copper-Chelating Peptides from Hydrolyzed Rice-Bran-Derived Albumin

Isolation and Identification of Tyrosinase-Inhibitory and Copper-Chelating Peptides from Hydrolyzed Rice-Bran-Derived Albumin

Crossed PtCoCu Alloy Nanocrystals with High‐Index Facets as Highly Active Catalyst for Methanol Oxidation Reaction

Tyrosinase inhibitory peptides: Structure-activity relationship study on peptide chemical properties, terminal preferences and intracellular regulation of melanogenesis signaling pathways

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