Muhammad Saifur Rohman
Laboratorium Biokimia Fakultas Kedokteran Universitas Brawijaya

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Identification of Protease Producing Halophilic Bacteria from Bledug KuwuMud Volcano Rohman, Muhammad Saifur; Prijambada, Irfan Dwidya; Indriyani, Yohanna Anisa; Hendrosatriyo, Heri
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (221.147 KB) | DOI: 10.22146/ijbiotech.15995

Abstract

The objective of this research was to isolate and identify the halophilic bacteria from Bledug Kuwu-mudvolacano having an ability to produce proteolytic enzyme. From this work, 6 bacterial isolates were obtainedfrom mud and water samples using artificial sea water media after incubation at room temperature. Threeout of the 6 isolates (BKL-3, BKL-5, and BKA-1) were selected for further analysis. BKL-3, BKL-5 and BKA-1exhibited an ability to grow at salt concentration greater than 10%. BKL-3 could grow on media supplementedwith 15% of salt, meanwhile BKL-5 and BKA-1 could grow at 20% of salt, respectively. Furthermore, thoseisolates also exhibited proteolytic activity when they were grown on casein media. The phylogenetic analysisbased on the 16SrRNA gene sequences showed that the BKL-3 belong to the group of Bacillaceae, whilst BKL-5and BKA-1 isolates were relatively distance from the group of Halomonadaceae. Therefore, BKL-5 and BKA-1could be considered as the allegedly new species that were separated from Halomonadaceae
Konstruksi Open Reding Frames (ORF) Artifisial Berukuran 798-bp yang Menyandi Protein dengan Urutan Asam Amino Acak Prijambada, Irfan Dwidya; Al-Awally, Khotibul Umam; Rohman, Muhammad Saifur; Artama, Wayan
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 9, No 1 (2004): February 2004
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (221.472 KB) | DOI: 10.24002/biota.v9i1.2828

Abstract

Penyusunan pustaka dari open reading frames (ORF) buatan yang tersusun atas 798 bp (pasangan basa), 576  di antaranya tersusun secara acak, yang mampu menyandi 266 asam amino telah berhasil dilakukan. Dalam upaya penyusunan tersebut diperoleh 32 transforman,  lima di antaranya membawa ORF buatan. Dari kelima transforman yang membawa ORF buatan tersebut, hanya satu transforman yang mampu berekspresi dan menyandi suatu protein. Protein yang dihasilkan memiliki ukuran 17 kDa, berukuran lebih kecil daripada ukuran yang diharapkan yaitu 29 kDa.
Identification of 1-Aminocyclopropane-1-Carboxilid Acid (ACC)-Deaminase Producing Endophytic Bacteria from Local Agricultural Plantation Based on 16S Ribosomal RNA Gene as Genetic Marker Simarmata, Rumella; Ngadiman, Ngadiman; Rohman, Muhammad Saifur; Simanjuntak, Partomuan
Biotropic : The Journal of Tropical Biology Vol 3 No 1 (2019): Biotropic, Volume 3, Nomor 1, 2019
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Islam Negeri Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (796.319 KB) | DOI: 10.29080/biotropic.2019.3.1.13-23

Abstract

The objective of this work was to isolate and identify of 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase producing endophytic bacteria from root of local agricultural plantation by using 16S rRNA gene as genetic marker. Twelve root samples were collected from local agricultural plantation in Java area.  After surface sterilization, each root sample was inoculated in nutrient agar media and the grown colonies were further purified and tested for the ability to grow in N-free minimal medium containing AIB as a sole of nitrogen source. The selected colonies were further tested for their ACC deaminase activity by measuring the rate of conversion of ACC into ?-ketobutyrate. From this work, 12 bacterial strains that exhibited the ACC deaminase activity by 123.75 to 1461.44 nmol ?-ketobutyrate/mg/hour were successfully isolated. Based on the 16SrRNA gene sequences, those bacterial isolates were identified as Sphingobacterium multivorum BK1, Bacillus mycoides CB2, Pantoea dispersa CK4, Pantoea agglomerans KD6.2, Enterobacter ludwigii KW3, Bacillus aryabhattai TW7, Pseudomonas monteilii KS12, Pseudomonas plecoglossicida KS16.2, Pseudomonas putida PIR3C, Stenotrophomonas maltophilia PIR5, Lysinibacillus pakistanensis PIC5, and Raoultella terrigena PCM8.  Pseudomonas putida PIR3C and Pseudomonas monteilii KS12 showed promising ACC deaminase activity and therefore it could be as a good candidate for further application in plant growth promoting in stress conditions.