Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

2.319

P-Index

This Author published in this journals

All Journal HAYATI Journal of Biosciences Indonesian Journal of Pharmaceutical Science and Technology Indonesian Journal of Biotechnology Health Notions Jurnal Biodjati Al-Kimia Chimica et Natura Acta Jurnal Pendidikan Kimia (JPKim) Indonesian Journal of Chemistry Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Sains dan Teknologi Farmasi Indonesia al Kimiya : Jurnal Ilmu Kimia dan Terapan Journal of Tropical Pharmacy and Chemistry Jurnal Sains dan Kesehatan

Muhammad Yusuf

Departemen Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Padjadjaran

Author-ID : 2681087

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Dentistry Earth & Planetary Sciences Education Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health

Published : 27 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3

Immunoinformatics Study on Early 4 Protein of Human Papillomavirus Type 16 for Cervical Cancer Vaccine Peptide Candidate Yani Suryani; Opik Taupiqurrohman; Muhammad Yusuf; Toto Subroto; Sukma Nuswantara
Jurnal Biodjati Vol 4, No 2 (2019): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v4i2.5414

The aims of this study were to carry out testing of the early 4 protein of type 16 HPV through immunoinformatics meth-ods in an effort to get the peptide vaccine candidate for cervical cancer. The software used are IEDB-AR, CABSdock and Accelrys Discovery Study 4.5. Based on the analysis that sequence of ami-no acid lysine, leucine, leucine, glycine, serine, threonine, tryp-tophan, proline and threonine (KLLGSTWPT) and the sequence of amino acid tyrosine, tyrosine, valine, leucine, histidine, leucine, cysteine, leucine, alanine, alanine, threonine, lysine, tyrosine, pro-line and leucine (YYVLHLCLAATKYPL) are peptide vaccine can-didate for cervical cancer from the early 4 protein of HPV type 16

Penggunaan Enzim α-Amilase dari Saccharomycopsis fibuligera R64 untuk Peningkatan Kualitas Roti Komposit Terigu-Ubi Jalar Ungu Agus Safari; Safri Ishmayana; Sylvi Qurrotul Aini; Saadah D. Rachman; Muhammad Yusuf; Muhammad Fadhlillah; Endah Wulandari; Idar Idar
Al-Kimia Vol 5 No 2 (2017): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v5i2.3861

Purple sweet potato (Ipomoea batatas var. Ayamurasaki) is one of typical sweet tubers which is also commonly well known as Ipomoea blackie due to blackish purple (solid purple) tuber skin and flesh. The sweet potato can be transformed into flour or pasta and used to substitute wheat flour in the production of composite bread. Instead of synthetic chemical compounds, α-amylase isolated from the yeast Saccharomycopsis fibuligera can be added to the flour or dough of the composite bread to improve its quality. The purpose of the present study was to investigate the effect of α–amylase addition on the quality of the purple sweet potato flour and pasta composite bread. The observed properties of the bread were crumbs morphology of the bread, volume increment, bread height, texture, and organoleptic test. The results showed that addition of the α-amylase to the dough of the composite bread increased the volume increment value from 155.0% to 177.1% and from 335.7% to 342.1% for the sweet potato flour and pasta bread composite, respectively. While height of the bread increased from 4.7 to 5.1 cm and from 6.9 to 7.8 cm after addition of the enzyme for the sweet potato flour and pasta bread composite, respectively. Composite bread with α-amylase addition has softer texture and higher preference. Morphology examination result showed that starch granules in the bread crums with α-amylase treatment were disrupted. Most plausibly, the enzymes degrade the starch granules and produced dextrin which inhibited the cross linking formation between starch and protein, and therefore, the speed of hardening process of the bread can be reduced.

Optimisasi Produksi α-Amilase dari Saccharomycopsis fibuligera R64 dengan Response Surface Method-Central Composite Design (RSM-CCD) Agus Safari; Ahsanul Chaliqin Gayo; Saadah Diana Rachman; Muhammad Yusuf; Safri Ishmayana
Al-Kimia Vol 7 No 1 (2019): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v7i1.8117

α-Amilase (EC 3.2.1.1) is an endoamylase that hydrolyze α-1,4 glycosidic bond in amylose and amylopectin molecules yielding simpler carbohydrate. This enzyme is used to replace starch acid hydrolysis in industrial process. α-Amilase is used in many industrial processes including food, paper, bioethanol, and desizing in textile industries. This enzyme can be found in human, plants and microbes. Most industries use microbes due to their flexibility and require less space and time to culture. In the present study we use Saccharomycopsis fibuligera R64 since this yeast has high amylolytic activity and known as food borne microorganisms. Extrinsic factors are easy to manipulate in the process of enzyme production. The present study intended to determine the optimum condition for α-amylase production by S. fibuligera R64 with agitation speed, pH, and time of incubation as independent variable in the present experiment. The experiment was initiated by rejuvenation of S. fibuligera culture, design of experiment using response surface method, analysis of amylase activity, and determination of protein content. The result of the present study showed that optimum condition for amylase production using S. fibuligera R64 is at pH, agitation speed and incubation time of 3.82, 156 rpm and 49 hours, respectively. The specific activity achieved was 423.8 U/mg based on Fuwa assay.

Development of Predictive Model for Helper T Lymphocyte Epitope Binding to HLADRB1* 01:01 Ari Hardianto; Muhammad Yusuf
Chimica et Natura Acta Vol 7, No 2 (2019)
Publisher : Departemen Kimia

Epitopes are essential peptides for immune system stimulation, such as governing helper T lymphocyte (HTL) activation via antigen presentation and recognition. Current predictive models for epitope selection mainly rely on the antigen presentation, although HTLs only recognize 50% of the presented peptides. Thus, we developed a HTL epitope predictor which involves the antigen recognition step. The predictor is specific for epitopes presented by Human Leukocyte Allele (HLA)-DRB1*01:01, which is protective against developing multiple sclerosis and association with autoimmune diseases. As the data set, we used binding register of immunogenic and non-immunogenic HTL peptides related to HLA-DRB1*01:01. The binding registers were obtained from consensus results of two current HLA-binder predictors. Amino acid descriptors were extracted from the binding registers and subjected to random forest algorithm. A threshold optimization were applied to overcome data set imbalance class. In addition, descriptors were screened by using a recursive feature elimination to enhance the model performance. The obtained model shows that the hydrophobicity, steric, and electrostatic properties of epitopes, mainly at center of binding registers, are important for the TCR recognition as well as the HTL epitopes predictive model. The model complements current HLA-DRB1*01:01-binder prediction methods to screen immunogenic HTL epitopes.

Pola Perubahan Urutan Asam Amino pada Hemaglutinin Virus H5N1 Indonesia Idar Idar; Soni Muhsinin; Umi Baroroh; Muhammad Yusuf
Chimica et Natura Acta Vol 7, No 3 (2019)
Publisher : Departemen Kimia

Wabah virus flu burung tipe A, H5N1 yang memiliki patogenisitas tinggi diketahui telah menginfeksi dan mematikan jutaan unggas di Indonesia sehingga menimbulkan kerugian yang besar secara ekonomi pada peternakan unggas. Hemaglutinin pada virus ini merupakan salah satu faktor penentu patogenisitas virus. Selain itu, komponen virus ini rentan mengalami mutasi dan dapat menyebabkan pergeseran dan penataan ulang antigen virus sehingga tercipta clade virus yang baru. Kemudian peranan HA dalam penempelan virus ke sel inang menyebabkan HA ini menjadi target untuk pengembangan obat maupun vaksin. Dengan demikian, penelitian ini bertujuan mencari pola urutan asam amino hemaglutinin yang khas pada H5N1 yang memiliki patogenisitas tinggi di Indonesia. Penelitian ini dilakukan dengan cara mengumpulkan urutan asam amino hemaglutinin H5N1 yang menginfeksi unggas di Indonesia mulai 2006 sampai 2016. Kemudian untuk mengetahui pola urutan asam amino hemaglutinin yang khas pada H5N1, dilakukan analisis penjajaran. Berdasarkan analisis tersebut dikethui bahwa urutan asam amino bagian loop hemagglutinin yang berada pada daerah asam amino posisi 341-346 memiliki pola –RRK-.

Analisis In Silico Capsid Scaffold Protein Virus Herpes Simpleks-1 Untuk Pengembangan Vaksin Herpes Opik Taupiqurrohman; Anneke Noviyanti; Muhammad Yusuf; Toto Subroto
Chimica et Natura Acta Vol 5, No 1 (2017)
Publisher : Departemen Kimia

Capsid scaffold protein merupakan salah satu protein virus herpes simpleks 1 yang potensial sebagai sumber kandidat vaksin peptida untuk penyakit herpes. Hal ini dikarenakan Capsid scaffold protein bersifat lestari pada semua jenis virus herpes manusia. Penelitian ini bertujuan untuk mendapatkan urutan peptida kandidat vaksin herpes dari Capsid scaffold protein. Metode yang digunakan pada penelitian ini adalah analisis in silico melalui pendekatan vaksinologi terbalik menggunakan program Vaxign dan Autodock Vina. Hasil analisis menunjukkan bahwa urutan peptida GLSQHYPPHV dari Capsid scaffold protein merupakan kandidat yang terbaik sebagai vaksin herpes berbasis peptida.

Studi In Silico Gadolinium(III)-Diethylene Triamine Pentaacetic Acid-Folat Dan Modifikasinya Terhadap Reseptor Folat Sebagai Senyawa Pengontras Untuk Deteksi Kanker Muhammad Yusuf; Bayu Shiddiq Widhi Pratama; Umi Baroroh; Shabarni Gaffar; Ukun M.S. Soedjanaatmadja
Chimica et Natura Acta Vol 9, No 3 (2021)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v9.n3.36035

Tumor ganas atau kanker merupakan salah satu masalah utama kesehatan di dunia. Pendeteksian dini sel kanker dengan menggunakan Magnetic Resonance Imaging (MRI) memungkinkan penanganan yang lebih baik. Pemilihan senyawa kontras yang tepat dapat meningkatkan akurasi diagnosa terhadap penyakit kanker. Sel kanker banyak mengekspresikan reseptor folat α yang mampu mengikat asam folat dalam tubuh. Penambahan asam folat ke dalam senyawa pengontras Gadolinium (III)-diethylene triamine pentaacetic acid (Gd-DTPA) berguna untuk meningkatkan spesifisitas diagnostik sel kanker. Penelitian ini bertujuan untuk mengetahui interaksi senyawa pengontras dengan molekul target reseptor folat α dengan penambatan molekul dan simulasi dinamika molekul (MD). Struktur Gd-DTPA-folat dimodelkan dari struktur kristal Gd-DTPA dan folat. Hasil penambatan molekul dan simulasi MD menunjukkan interaksi Gd-DTPA-folat menurunkan afinitas folat terhadap reseptornya. Hasil perhitungan energi reseptor folat dengan folat dan Gd-DTPA-folat pada simulasi MD masing-masing -47,65 kkal/mol dan -43,78 kkal/mol. Modifikasi dilakukan pada struktur asam folat dengan penambahan gugus formil dan diuji kembali dengan penambatan molekul dan simulasi MD. Hasil simulasi menunjukkan bahwa modifikasi berpengaruh terhadap peningkatan afinitas folat dengan reseptor folat α melalui interaksi elektrostatik, dengan energi yang dihasilkan pada penambatan molekul dan MD masing-masing sebesar -7,04 kkal/mol dan -60,04 kkal/mol. Hasil penelitian ini diharapkan dapat bermanfaat untuk menghasilkan senyawa pengontras yang spesifik terhadap sel kanker.

Optimisasi pH dan Agitasi pada Produksi Glukoamilase dari Saccharomycopsis fibuligera R64 Menggunakan Response Surface Method Agus Safari; Rudi Hartono; Shabarni Gaffar; Muhammad Yusuf; Saadah D. Rachman; Safri Ishmayana
Chimica et Natura Acta Vol 6, No 1 (2018)
Publisher : Departemen Kimia

Glukoamilase adalah salah satu enzim esktraseluler yang dihasilkan oleh ragi Saccharomycopsis fibuligera. Enzim ini mampu memecah ikatan α-1,4 dan α-1,6 glikosidik pada molekul amilosa dan amilopektin. Pada penelitian ini telah dilakukan produksi enzim glukoamilase dalam media fermentasi yang mengandung sumber karbon yang berbeda, yaitu tepung beras, dedak dan pati. Fermentasi dilakukan dengan sistem lompok pada suhu kamar dengan kecepatan agitasi 150 rpm selama 3 hari. Nilai OD dan aktivitas glukoamilase ditentukan setiap 24 jam. Hasil penelitian menunjukkan bahwa tepung beras menghasilkan aktivitas glukoamilase tertinggi. Aktivitas glukoamilase tertinggi pada tepung beras terdeteksi pada jam ke-48 dengan nilai 28,48 unit/mL. Dengan kondisi waktu yang sama nilai aktivitas enzim glukoamilase pada media dedak dan pati berturut-turut yaitu 18,08 dan 18,67 unit/mL. Selanjutnya media tepung beras digunakan untuk mengoptimisasi produksi enzim glukoamilase dengan variasi agitasi dan pH menggunakan desain Response Surface Method. Hasil penelitian menunjukkan bahwa pH berpengaruh signifikan terhadap produksi enzim glukoamilase. Kondisi optimum produksi glukoamilase diperoleh pada agitasi dan pH berturut-turut yaitu 250 rpm dan 5. Nilai aktivitas enzim glukoamilase pada kondisi optimum yaitu 56,22 unit/mL.

Aplikasi Desain Eksperimen Plackett-Burman dan Response Surface Methodology Box-Behnken pada Produksi Senyawa Pengontras Magnetic Resonance Imaging Gadolinium Dietilentriaminpentaasetat-Folat Retna Putri Fauzia; Abdul Mutalib; Ukun M.S. Soedjanaatmadja; Anni Anggraeni; Muhammad Yusuf; Husein H. Bahti
Chimica et Natura Acta Vol 5, No 1 (2017)
Publisher : Departemen Kimia

Desain Plackett-Burman digunakan untuk menyeleksi variabel yang memiliki pengaruh utama dalam produksi Gadolinium Dietilentriaminpentaasetat-Folat (Gd-DTPA-Folat) sebagai senyawa pengontras Magnetic Resonance Imaging (MRI). Tujuh variabel seperti rasio mol Gadolinium (Gd) dan ligan Dietilentriaminpentaasetat-Folat (DTPA-Folat), suhu, laju pengadukan, pH, waktu reaksi dan volume pelarut diseleksi dalam proses produksi. Faktor dummy yang tidak memiliki pengaruh secara kimia ditambahkan juga dalam eksperimen. Dari ketujuh variabel, rasio mol Gd dan DTPA-Folat, laju pengadukan dan volume pelarut memiliki pengaruh yang positif terhadap persentase hasil rendemen Gd-DTPA-Folat. Tahapan selanjutnya adalah mengetahui interaksi antara faktor-faktor yang berpengaruh positif dalam eksperimen dan menghasilkan respon optimum untuk keseluruhan variabel menggunakan Response Surface Methodology Box-Behnken. Pendekatan statistik dalam studi untuk eksperimen desain menggunakan Software Design Expert 9.0.6.2. Kesimpulan dalam hasil penelitian adalah bahwa kondisi reaksi optimum dalam produksi Gd-DTPA-Folat, yaitu rasio mol Gd dan DTPA-Folat 10:1, laju pengadukan 500 RPM dan volume pelarut sebanyak 20 mL (untuk 2,5 x 10-4 mmol ligan). Prediksi hasil rendemen Gd-DTPA-Folat pada kondisi optimum adalah 87,3296%.

Molecular Docking Studies of Compounds from Brucea javanica (L.) Merr. Towards The Discovery of Potential H5N1 Neuraminidase Inhibitors Rina Fajri Nuwarda; Zelika Mega Ramadhania; Imam Adi Wicaksono; Muhammad Yusuf; Ade Rizqi Ridwan Firdaus; Muchtaridi Muchtaridi
Indonesian Journal of Pharmaceutical Science and Technology Vol 7, No 1 (2020)
Publisher : Indonesian Journal of Pharmaceutical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/ijpst.v7i1.25643

The occurrences of a highly pathogenic avian influenza virus (HPAI) type A H5N1 has caused infections in millions of poultry as well as hundreds of human cases and even mortalities. Indonesia has become one of the world’s highest casualty rates of H5N1 human infections, with the number of deaths was 167 from a total of 199 cases. The development of viral resistance towards the available anti-influenza drugs neuraminidase (NA) inhibitors required the discovery of new inhibitors. In the recent advance of drug discovery, natural products have been considered as one of the essential sources of medicinal agents, and Brucea javanica has been found to possess antiviral activity against H5N1 NA. Thus, this research aimed to investigate the in silico activities of compounds from B. javanica using molecular docking methods against H5N1 NA. In this study, docking-based virtual screening of compounds from B. javanica to quickly select in silico hits to be potential NA inhibitors was performed. Subsequently, the intermolecular interactions of the inhibitor compounds with the H5N1 NA were analysed to examine the most preferred interactions. The results showed that brucein G and bruceoside C were found having the lowest binding energy and most preferred interactions with H5N1 NA and therefore, can be proposed for further study as potential NA inhibitors.Keyword: antiviral, Brucea javanica, H5N1, molecular docking, neuraminidase

Co-Authors Abdul Mutalib Abdul Mutalib Abdul Mutalib Abdul Mutholib Ade Rizki Ridwan Firdaus Ade Rizqi Ridwan Firdaus Agus Safari Agus Safari Agus Safari Ahmad Fariz Maulana Ahsanul Chaliqin Gayo Anceu Murniati Angga Himas Setyawan Anita Yuwita Anneke Noviyanti Anni Anggraeni Anni Anggraeni Anni Anggraeni Annisyaban Fatiha Azzahra Ari Hardianto Arum Kurnia Sari Ashary Fathul Hafidh Bachti Alisjahbana Bacthi Alisjahbana Baroroh, Umi Basti Andriyoko Bayu Shiddiq Widhi Pratama Bevi Lidya Clara Claudia Desy Linasari Dewi Astriany Dewi Astriany Dewi Ratih Handayani Dhiya Salsabila Elsa Destiana Endah Wulandari Farhan Azhwin Maulana Fauzian Giansyah Fauziyah, Hanifa Ghina Nur Fadhilah Henry Chandra Herman Herman Hesein H. Bahti Hesti Lina Wiraswati Husein Hernadi Bahti Idar Idar Idar Idar Ika Wiani Imam Adi Wicaksono Iman Permana Maksum Iman Rahayu Irkham Irkham Irma Mardiah Khomaini Hasan Khomairi Hasan Korry Novitriani Korry Novitriani, Korry Leonardus Wiydatmoko Mamlikatu Ilmi Azizah Martalena Ramli Mia Tria Novianti Mia Widyaningsih Muchtaridi Muchtaridi Muhamad Abidin Muhamad Abidin Muhammad Fadhlillah Nisa Fauziah Novianti, Mia Tria Nur Asni Setiani Nurul Aida Fathya Opik Taupiqurrohman R. Ukun M.S. Soedjanaatmadja Rahmaniar Mulyani Ratna Sari Dewi Ratna Sari Dewi Regaputra Satria Janitra Retna Putri Fauzia Rima Handiyani Rina Fajri Nuwarda Rista Awalia Rudi Hartono Saadah D. Rachman Saadah D. Rachman Saadah Diana Rachman Safri Ishmayana Safri Ishmayana Safri Ishmayana Safri Ishmayana Safri Ishmayana Santhy Wyantuti Sari Syahruni Sari Syahruni Saronom Silaban Shabarni Gaffar Shabarni Gaffar Shabarni Gaffar Shabarni Gaffar Shabarni Gaffar Shinta Kusumawardani Shinta Kusumawardani Siti Soidah Soni Muhsinin Sukma Nuswantara Sylvi Qurrotul Aini Taufik Ramdani Tohari Toto Subroto Toto Subroto Toto Subroto Toto Subroto Toto Subroto Umi Baroroh Umi Baroroh Wahyu Widayat Wanda Destiarani Yani Suryani Yeni Wahyuni Hartati Yeni Wahyuni Hartati Yurika Sastyarina Yurika Sastyarina Zelika Mega Ramadhania Zuhrotun Nafisah Zuhrotun Nafisah

Title

Found 27 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 27 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 27 Documents
Search