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Simulasi Dinamika Molekuler Senyawa Asam Ferulat dan Turunannya dari Kulit Buah Nanas (Ananas comosus) sebagai Inhibitor Enzim Tirosinase Fakih, Taufik Muhammad; Wisnuwardhani, Hilda Aprilia; Dewi, Mentari Luthfika; Ramadhan, Dwi Syah Fitra; Hidayat, Aulia Fikri; Prayitno, Robby
JSFK (Jurnal Sains Farmasi & Klinis) Vol 8 No 2 (2021): J Sains Farm Klin 8(2), Agustus 2021
Publisher : Fakultas Farmasi Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsfk.8.2.208-220.2021

Abstract

Enzim tirosinase merupakan enzim utama pada proses pembentukan pigmen melanin. Penghambatan aktivitas enzim tirosinase secara kompetitif maupun non-kompetitif menjadi kunci utama pengembangan agen pencerah kulit. Asam ferulat merupakan salah satu senyawa antioksidan yang kuat dan mampu melindungi kulit dari dampak buruk sinar UV yang menginduksi stress oksidatif. Penelitian ini bertujuan untuk mengidentifikasi interaksi molekuler antara senyawa asam ferulat dari kulit buah nanas (Ananas comosus) dan turunannya dengan enzim tirosinase menggunakan motode dinamika molekuler. Molekul senyawa uji dimodelkan menggunakan perangkat lunak Quantum ESPRESSO v.6.6. Model terbaik dipilih untuk dilakukan studi interaksi menggunakan perangkat lunak MGLTools 1.5.6 yang dilengkapi dengan AutoDock 4.2. Konformasi terbaik hasil penambatan molekuler kemudian dikonfirmasi stabilitasnya dengan simulasi dinamika molekuler menggunakan perangkat lunak Gromacs 2016.3. Berdasarkan hasil dari penambatan molekuler, senyawa asam iso-ferulat memiliki afinitas yang paling baik, yaitu dengan nilai energi bebas ikatan −25,06 kJ/mol dan memilki ikatan dengan logam seng (Zn) pada sisi aktif enzim tirosinase. Kemudian senyawa tersebut memiki stabilitas interaksi yang baik berdasarkan grafik RMSD, RMSF, Rg, SASA, RDF, dan H-Bond. Dengan demikian, senyawa asam iso-ferulat diprediksi dapat digunakan sebagai kandidat inhibitor kompetitif dan non-kompetitif enzim tirosinase
Studi Molecular Docking Senyawa Ircinianin Terhadap Reseptor Sodium-Glukose Co-Transporter 2 (SGLT-2) ramadhan, dwi syah fitra; Dewi, Ratnasari; Ibrahim, Ismail; Rachmawati Daswi, Dwi; Nurisyah, Nurisyah; Asyikin, Asyhari; Abdullah, Tajuddin
FASKES : Jurnal Farmasi, Kesehatan, dan Sains Vol. 2 No. 2 (2024): Bulan November 2024 Faskes : Jurnal Farmasi, Kesehatan, dan Sains
Publisher : Program Studi Farmasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32665/faskes.v2i2.3514

Abstract

Latar Belakang: Sodium-glucose cotransporter 2 (SGLT-2) merupakan target potensial dalam pengobatan diabetes tipe 2, dengan inhibitor SGLT-2 yang bekerja menghambat reabsorpsi glukosa di ginjal. Penelitian ini bertujuan untuk mengevaluasi potensi ircinianin, senyawa alami yang diisolasi dari spons Ircinia sp., sebagai inhibitor SGLT-2 menggunakan pendekatan molecular docking. Tujuan: Penelitian ini bertujuan untuk menganalisis interaksi antara ircinianin dan protein SGLT-2 serta mengevaluasi potensi penghambatan ircinianin terhadap reseptor SGLT-2. Metode: Metode yang digunakan adalah molecular docking dengan perangkat lunak AutoDock4. Prosedur dilakukan dengan docking ligan pada situs aktif SGLT-2. Ligan didocking dengan 100 iterasi untuk memperoleh konformasi ikatan yang optimal. Interaksi dianalisis berdasarkan energi ikatan dan visualisasi dilakukan menggunakan Discovery Studio. Hasil: Ircinianin menunjukkan energi ikatan sebesar -10,76 kcal/mol, sedikit lebih tinggi dibandingkan native ligand (-11,46 kcal/mol). Ircinianin membentuk dua ikatan hidrogen dengan residu PHE:98 dan TRP:291. Kesimpulan dan Saran: Ircinianin memiliki potensi sebagai inhibitor SGLT-2, meskipun ikatan hidrogennya lebih sedikit dibandingkan ligan asli. Penelitian lebih lanjut diperlukan untuk mengeksplorasi potensi terapeutik ircinianin dalam pengobatan diabetes tipe 2.
Identifikasi Metabolit Bioaktif pada Asam Jawa (Tamarindus indica L.) menggunakan Komputasi Dinamika Molekuler untuk Penargetan HER-2 Kanker Payudara Ramadhan, Dwi Syah Fitra; Indraswari, Ni Luh Astri; Hakim, Supartina; Rusli, Rusli; Nurisyah, Nurisyah; Asikin, Asyhari; Fakih, Taufik Muhammad; Aksar, M
Jurnal Mandala Pharmacon Indonesia Vol. 10 No. 1 (2024): Jurnal Mandala Pharmacon Indonesia
Publisher : Program Studi Farmasi Universitas Mandala Waluya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35311/jmpi.v10i1.520

Abstract

The HER-2 (Human EGF Receptor-2) receptor is a receptor known to be strongly correlated with carcinogenesis and a worse prognosis in breast cancer patients. One of the native Indonesian plants that has been reported to inhibit breast cancer growth is tamarind (Tamarindus indica L.) which is known to contain various active metabolites. However, until now, the molecular activity of each of these metabolites has not been known. and one of the highly accurate simulation methods commonly used is molecular dynamics simulation. This study aims to understand the binding stability of active metabolites in tamarind computationally using molecular dynamics. The simulation begins with the preparation of 3D structures of ligands and receptors. The ligand of active metabolite from tamarind tree was obtained from KnapSack natural compound database, and the 3D structure of HER-2 receptor was obtained from PDB site with code 3PP0 and resolution of 2.25 Å. Furthermore, molecular tethering was performed using Autodock4 software. A high-performance computer was used for molecular dynamics simulation with Gromacs 2016 software for 100 nanoseconds (ns). Afterwards, molecular affinity analysis was performed, including RMSD (Root Mean Square Deviation) and RMSF (Root Mean Square Fluctuation). The analysis results showed that of the 6 compounds found in tamarind plants, the orientin compound showed the most favorable molecular Tethering activity with a value of -8.41 Kcal/mol. Although still higher than the natural ligand, the value is close to the value of the natural ligand with a difference of 1.8 Kcal/mol, which is -10.21 Kcal/mol. Furthermore, orientin showed very similar stability to the native ligand, as observed from the RMSD and RMSF analysis. In conclusion, the compound orientin found in tamarind has the potential to be a lead compound for inhibiting HER-2 in breast cancer.
In Silico Activity Identification of Cyclo Peptide Alkaloids from Zizyphus Spina-Christi Species Against Sars-Cov-2 Main Protease Fakih, Taufik Muhammad; Ramadhan, Dwi Syah Fitra; Darusman, Fitrianti
Jurnal Biodjati Vol 6 No 1 (2021): May
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v6i1.10603

Abstract

The COVID-19 has spread worldwide and become an international pandemic. The promising target for drug discovery of COVID-19 was SARS-CoV-2 Main Protease (Mpro), that has been successfully crystallized along with its inhibitor. The discovery of peptide-based inhibitors may present better options than small molecules for inhibitor SARS-CoV-2 Mpro. Natural compounds have such a wide potential and still few explored, Zizyphus spina-christi is one of the medicinal plants that have many pharmacological activities and contains a peptide compound from alkaloids class, i.e. cyclopeptide alkaloids, that is interesting to explore as SARS-CoV-2 Mpro inhibitor. The compound structure was drawn and optimized using density functional theory 3-21G method. The protein chosen was the high resolution of SARS-CoV-2 MPro receptor (1.45 Å) with PDB ID: 6WNP, in complex with boceprevir. Molecular docking simulation was performed using Autodock4 with 100 numbers of GA run, the validation methods assessed by RMSD calculation. Furthermore, the prediction of pharmacological activity spectra was carried out using the PASS Prediction server. The results showed RMSD value was 1.98 Å, this docking method was valid. The binding energy of all compounds showed better results than the native ligand (Boceprevir). The in silico PASS prediction results indicated that all compounds showed antiviral activity. Some compounds showed protease inhibitory activity, i.e Ambiphibine-H, Franganine, and Mauritine-A, and the highest Pa (Predicted activity) value showed by Mauritine-A compounds. It can be concluded that the cyclopeptide compounds of Zizyphus spina-christi were indicated to have a potential as COVID-19 therapy targeting SARS-CoV-2 Mpro.