Prediksi Struktur 3D L-Asparaginase Bakteri Laut Vibrio sp. AND4 dengan Metode Homology Modelling
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Abstract
L-asparaginase merupakan enzim yang menghidrolisis L-asparagin menjadi L-aspartat dan ammonia yang dapat digunakan dalam terapi pengobatan Leukemia Limfoblastik Akut. Penentuan struktur 3D L-asparaginase dari berbagai sumber dapat memberikan informasi penting dalam memahami sifat dan fungsi biokimia L-asparaginase di level molekuler untuk penelusuran L-asparaginase alternatif sebagai protein teurapetik. Tujuan penelitian ini adalah memprediksi struktur 3D enzim L-asparaginase II dari bakteri laut Vibrio sp. AND4 dengan E.coli L-asparaginase II mutant (T12V) in complex with L-Asn at pH 7.0 [Escherichia coli K-12] (PDB ID: 6PA9) sebagai templat struktur, menggunakan metode pemodelan homologi dengan program SWISS-MODEL. Penelitian ini menghasilkan model struktur 3D dengan Sequence identity 70,55%, memiliki nilai QMEANDisCo 0,86±0,05 dan nilai GMQE sebesar 0,86. Terdapat 93,1% residu berada di daerah the most favored regions dan 0,3% residu berada di daerah disallowed regions pada Ramachandran plot, dengan G-Factors sebesar -0.08 yang memenuhi syarat-syarat kualitas struktur ideal.
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