STUDI IN SILICO PENAMBATAN MOLEKUL PIPERIN TERHADAP PROTEIN PEMBENTUKAN BIOFILM PADA Methicillin-resistant Staphylococcus aureus (MRSA)

MIFTAH ELFREDA ALSEPKY HADI, - (2026) STUDI IN SILICO PENAMBATAN MOLEKUL PIPERIN TERHADAP PROTEIN PEMBENTUKAN BIOFILM PADA Methicillin-resistant Staphylococcus aureus (MRSA). Skripsi thesis, Sekolah Tinggi Farmasi Indonesia.

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Abstract

Methicillin-resistant Staphylococcus aureus (MRSA) merupakan bakteri patogen yang mampu membentuk biofilm sehingga meningkatkan resistensi terhadap antibiotik. Piperin sebagai senyawa aktif utama pada Piper nigrum L. diketahui memiliki aktivitas antibiofilm dan berpotensi dikembangkan sebagai inhibitor pembentukan biofilm. Penelitian ini bertujuan menganalisis nilai energi ikatan piperin terhadap protein target pembentuk biofilm MRSA serta mengevaluasi potensinya sebagai inhibitor berdasarkan interaksi molekuler. Penelitian dilakukan secara in silico menggunakan metode penambatan molekul terhadap sembilan protein target pembentuk biofilm MRSA, yaitu ClfA, FnbA, SarA, IcaA, IcaB, IcaC, IcaD, ArgB, dan ArgC. Struktur protein diperoleh dari UniProt dan AlphaFold, sedangkan struktur ligan diperoleh dari PubChem. Penambatan molekul dilakukan menggunakan AutoDock Vina dengan pendekatan blind docking, sedangkan visualisasi interaksi dilakukan menggunakan BIOVIA Discovery Studio. Piperin mampu berikatan dengan seluruh protein target dengan nilai energi ikatan antara −6,4 hingga −8,5 kkal/mol. Nilai energi ikatan terbaik diperoleh pada protein IcaA, yaitu −8,5 kkal/mol. Visualisasi interaksi menunjukkan bahwa piperin membentuk ikatan hidrogen, interaksi hidrofobik, dan interaksi elektrostatik pada sisi pengikatan. Berdasarkan hasil tersebut, piperin berpotensi sebagai kandidat senyawa antibiofilm terhadap MRSA, dengan protein IcaA sebagai target yang paling potensial untuk menghambat sintesis polysaccharide intercellular adhesin (PIA) yang berperan penting dalam pembentukan biofilm. -------- Methicillin-resistant Staphylococcus aureus (MRSA) is a pathogenic bacterium capable of forming biofilms, thereby increasing resistance to antibiotics. Piperine, the major bioactive compound of Piper nigrum L., is known to possess antibiofilm activity and has the potential to be developed as a biofilm formation inhibitor. This study aimed to analyze the binding energy of piperine against MRSA biofilmforming target proteins and evaluate its potential as an inhibitor based on molecular interactions. An in silico molecular docking approach was conducted on nine MRSA biofilm-forming target proteins, namely ClfA, FnbA, SarA, IcaA, IcaB, IcaC, IcaD, ArgB, and ArgC. Protein structures were obtained from UniProt and AlphaFold, while the ligand structure was retrieved from PubChem. Molecular docking was performed using AutoDock Vina with a blind docking approach, and interaction visualization was carried out using BIOVIA Discovery Studio. Piperine bound to all target proteins with binding energy values ranging from −6.4 to −8.5 kcal/mol. The lowest binding energy was observed for IcaA (−8.5 kcal/mol). Interaction visualization revealed hydrogen bonds, hydrophobic interactions, and electrostatic interactions at the binding site. These findings suggested that piperine has the potential to serve as an antibiofilm candidate against MRSA, with IcaA identified as the most promising target for inhibiting the synthesis of polysaccharide intercellular adhesin (PIA), which plays an essential role in biofilm formation.

Item Type:	Thesis (Skripsi)
Uncontrolled Keywords:	biofilm, MRSA, penambatan molekul, piperin. ------- biofilm, MRSA, molecular docking, piperine.
Subjects:	Q Science > Q Science (General) Q Science > QH Natural history > QH301 Biology
Divisions:	Program Studi S1 Farmasi
Depositing User:	pustakawan - -
Date Deposited:	24 Sep 2026 02:21
Last Modified:	24 Sep 2026 02:21
URI:	http://repository.stfi.ac.id/id/eprint/4304

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