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All Journal Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Transformasi: Jurnal Pengabdian Masyarakat Jurnal Kimia Riset Indonesia Natural Research Pharmaceutical Journal (INRPJ) Borneo Journal of Pharmacy Jurnal Sains dan Kesehatan
Meray, Nishia Waya
Universitas Mulia
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Medicine & Pharmacology Public Health

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Journal : Jurnal Kimia Riset

 1 
STUDI BIOINFORMASI URUTAN ASAM AMINO DAN STRUKTUR 3D PROTEIN ALDOLASE KELAS II (AldII) DARI Uncultured Acidilobus sp. Nishia Waya Meray; Suharti Suharti; Akhmaloka Akhmaloka
Jurnal Kimia Riset Vol. 6 No. 2 (2021): Desember
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v6i2.31097

Abstract

Pada penelitian sebelumnya fragmen gen 1,9 kb telah berhasil diisolasi dari Kawah Domas, Jawa Barat melalui pendekatan metagenom. Fragmen tersebut diketahui mengandung daerah Open Reading Frame (ORF) utuh dari gen pengkode aldolase kelas II dari uncultured Acidilobus sp. yang kemudian disebut sebagai aldII. Fragmen gen aldII tersebut berhasil diekspresikan menjadi protein termostabil aldolase kelas II yang kemudian disebut sebagai AldII. Penelitian ini bertujuan untuk melakukan studi bioinformasi terhadap protein AldII tersebut. Protein AldII kemudian diketahui memiliki massa molekul ~21,2 kDa dengan rumus molekul C940H1539N261O281S8. Total residu bermuatan negatif (Asp + Glu) sebanyak 22 residu, sedangkan total residu bermuatan positif (Arg + Lys) adalah 18 residu. Nilai pI teoritis AldII sebesar 5,86. Hasil perhitungan indeks kestabilan protein ini adalah 36,61 dan diklasifikasikan sebagai protein yang stabil. Lewat penjajaran dengan homologi terdekat, ditemukan daerah lestari yang dapat menunjukan residu yang mungkin berperan dalam pengikatan logam dan sisi aktif. Prediksi struktur 3D dilakukan secara ab initio, menunjukan adanya 6 struktur β-sheet dan 6 struktur α-heliks. Dengan demikian dapat disimpulkan bahwa protein AldII dari uncultured Acidilobus sp. diduga memiliki aktivitas enzimatik.
3D STRUCTURE AND FUNCTION ANALYSIS OF RECOMBINANT ALDII PROTEIN FROM Uncultured Acidilobus sp. USING I-TASSER Meray, Nishia Waya; Suharti, Suharti; Akhmaloka, Akhmaloka
Jurnal Kimia Riset Vol. 9 No. 1 (2024): June
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v9i1.56154

Abstract

The AldII protein is a new recombinant protein produced from a novel gene obtained via a metagenome approach. Previous studies showed that this protein is strong and has the same metal binding aspect as the class II Aldolase enzyme. Aldolase is a valuable enzyme used in pharmaceuticals, food processing, and biochemistry. Further investigation is required to comprehend the structure and function of the AldII protein due to its potential. Researchers will conduct sophisticated bioinformatic analysis on the 3D shape and function prediction of AldII using the I-TASSER webserver from Zhanglab. The AldII protein is a new recombinant protein produced from a novel gene obtained via a metagenome approach. Previous studies showed that this protein is strong and has the same metal binding aspect as the class II Aldolase enzyme. Aldolase is a valuable enzyme used in pharmaceuticals, food processing, and biochemistry. Further investigation is required to comprehend the structure and function of the AldII protein due to its potential. Researchers will conduct sophisticated bioinformatic analysis on the 3D shape and function prediction of AldII using the I-TASSER webserver from Zhanglab. The I-TASSER server is an online tool for the automated prediction of protein structure and annotation of functions based on structure. Analysis of the AldII protein using the I-TASSER webserver shows that this protein has a stable structure with the closest structural homology to deoxyribose-phosphate aldolase from Bacillus thuringiensis with PDB code 6btdA. Additionally, the biological structure analysis shows that this protein shares the biological function of the enzyme L-fuculose-1-phosphate aldolase, which is part of the class II Aldolase enzyme that plays a role in the catabolism of arabinose, L-Fuculose, and Rhamnose. The results align with prior research that states the AldII protein is a stable protein with a catalytic side that is homologous to the class II Aldolase enzyme.
EXPLORATION OF BIOACTIVE COMPOUNDS OF RAMBUSA (Passiflora foetida L.) ROOT EXTRACT FROM EAST KALIMANTAN COAL RECLAMATION LAND AS ANTIOXIDANT Meray, Nishia Waya; Utami, Indah Woro; Nurazizah
Jurnal Kimia Riset Vol. 9 No. 2 (2024): December
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v9i2.63620

Abstract

The rambusa plant (Passiflora foetida L.) is a species utilized as a cover crop due to its capacity to undergo a natural regeneration process in the context of former coal mining operations in East Kalimantan. Rambusa plants have many phytochemical properties, one of which is as an antioxidant. Nevertheless, there is currently a paucity of scientific data regarding the potential antioxidant properties of bioactive compounds in Rambusa roots utilized as cover crop plants. The objective of this study is to investigate the composition of bioactive compounds in the root extract of Rambusa plants that are cultivated on land previously utilized for coal mining in East Kalimantan, with a particular focus on their antioxidant properties. In this study, the exploration was carried out by conducting phytochemical tests using three types of solvents, namely ethanol, ethyl acetate and n-hexane and antioxidant activity tests using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) method on the extracted samples. Phytochemical screening results showed the presence of alkaloid, phenolic, flavonoid, terpenoid and saponin bioactive compounds in ethanol extract; alkaloid, phenolic and steroid bioactive compounds in ethyl acetate extract. At the same time, alkaloids and steroids are contained in the n-hexane extract. The DPPH test carried out on the three extracts showed very strong antioxidant activity with IC50 values respectively for ethanol, ethyl acetate and n-hexane extracts are 6.55 ppm, 3.51 ppm and 28.71 ppm. Based on previously reported antioxidant activity data, the antioxidant activity of Rambusa (Passiflora foetida L.) roots growing on coal reclamation land is proven to have much higher activity compared to Rambusa plants growing on fertile land. Thus, the root of the Rambusa plant (Passiflora foetida L.) has enormous potential as an antioxidant and natural medicinal raw material.
Co-Authors Akhmaloka Akhmaloka Canrika, Rezia Elok Eka Kumala Retno Garaika Hamdana Indah Woro Utami Linda Fauziyah Ariyani Murtiyana Sari Nurazizah Retno, Eka Kumala sapri sapri Suharti Suharti Utami, Indah Woro Vidy Warrantia Citta Citti Putri Wury Damayantie Yamani