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      Identifikasi Senyawa Aktif Teh Hitam dan Kunyit dalam Meningkatkan Aktivitas Enzim Superoksida Dismutase secara In Silico

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      Date
      2021
      Author
      Huda, Aziz Syamsul
      Hasan, Akhmad Endang Zainal
      Saithri, Mega
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      Abstract
      Superoksida dismutase (SOD) merupakan antioksidan penting dalam melindungi sel terhadap kerusakan yang timbul akibat stres oksidatif. Berbagai bahan alternatif telah terbukti meningkatkan aktivitas SOD sebagai agen antioksidan termasuk teh hitam dan kunyit, namun belum diketahui senyawa aktif yang berperan dalam meningkatkan aktivitas enzim SOD. Penelitian ini bertujuan menentukan senyawa aktif teh hitam dan kunyit yang berperan dalam meningkatkan aktivitas enzim superoksida dismutase dengan metode penapisan virtual dan penambatan molekuler terhadap reseptor Cu/Zn SOD (PDB ID: 1CB4). Penelitian dilakukan dengan analisis bioavaibilitas dan toksisitas 20 senyawa aktif teh hitam serta 29 senyawa aktif kunyit, dilanjutkan penapisan virtual dan penambatan molekuler. Hasil penambatan molekuler dianalisis melalui parameter energi bebas Gibbs (∆G) dan kesamaan situs ikat (BSS). Epicatechin gallate (teh hitam) dan curcumin (kunyit) memiliki potensi terbaik dalam meningkatkan aktivitas enzim Cu/Zn SOD dengan nilai energi afinitas masing-masing sebesar -9,5 dan -7,4 Kkal/mol serta nilai BSS yang sama besar yaitu 81,8% terhadap beta amyrin sebagai ligan pembanding. Epicatechin gallate dan curcumin diprediksi dapat diserap dengan baik oleh tubuh karena memenuhi aturan Lipinski dan aman dikonsumsi karena tidak bersifat toksik.
       
      Superoxide dismutase (SOD) a re regarded as important antioxidants for protecting cells against damage arising from oxidative stress. Various alternative materials have been shown to increase the activity of SOD as an antioxidant agent, including black tea and turmeric, but the active compounds that increasing the activity of the SOD enzyme is still unknwon. This study aims to determine the active compounds of black tea and turmeric that play a role in increasing the activity of the SOD enzyme by virtual screening methods and molecular docking of the Cu/Zn SOD receptor (ID: 1CB4). The study analyzes the bioavailability and toxicity of 20 active compounds of black tea and 29 active compounds of turmeric followed by virtual screening and molecular docking. The results were analyzed by Gibbs free energy (∆G) and binding site similarity (BSS) parameters. Epicatechin gallate (black tea) and curcumin (turmeric) are best potential compound to increase the activity of Cu/Zn SOD enzymes with ∆G values of -9.5 and -7.4 Kcal/mol and same BSS value that is 81.8% against beta amyrin as control ligand. Epicatechin gallate and curcumin can be well absorbed because comply with Lipinski’s rule and safe for consumption because they are not toxic.
       
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      http://repository.ipb.ac.id/handle/123456789/107484
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      • UT - Biochemistry [1466]

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