نتایج جستجو برای: thiobacillus ferrooxidans

تعداد نتایج: 1363  

Journal: :Applied and environmental microbiology 1989
Renato Arredondo Carlos A Jerez

A specific and very sensitive dot-immunobinding assay for the detection and enumeration of the bioleaching microorganism Thiobacillus ferrooxidans was developed. Nitrocellulose spotted with samples was incubated with polyclonal antisera against whole T. ferrooxidans cells and then in I-labeled protein A or I-labeled goat antirabbit immunoglobulin G; incubation was followed by autoradiography. S...

Journal: :FEMS microbiology letters 1992
J Acuña J Rojas A M Amaro H Toledo C A Jerez

Ni2+, Fe2+ and Cu2+ were attractants and aspartate was an apparent repellent for Leptospirillum ferrooxidans, a behaviour opposite to that for Escherichia coli. Membranes from L. ferrooxidans contained proteins with a molecular mass in the range of 80 kDa which were methylated in vitro. Methylation was stimulated in the presence of a membrane-free extract from E. coli, showing the response patt...

Journal: :Applied and environmental microbiology 1996
J Pizarro E Jedlicki O Orellana J Romero R T Espejo

The composition of bacterial populations in copper bioleaching systems was investigated by analysis of DNA obtained either directly from ores or leaching solutions or after laboratory cultures. This analysis consisted of the characterization of the spacer regions between the 16 and 23S genes in the bacterial rRNA genetic loci after PCR amplification. The sizes of the spacer regions, amplified f...

Journal: :Applied and environmental microbiology 1994
T Sugio S Uemura I Makino K Iwahori T Tano R C Blake

When grown on iron-salt medium supplemented with the bisulfite ion, Leptospirillum ferrooxidans was much more sensitive to the ion than was Thiobacillus ferrooxidans. The causes of the sensitivity of L. ferrooxidans to the bisulfite ion were studied. The bisulfite ion completely inhibited the iron-oxidizing activities of L. ferrooxidans and T. ferrooxidans at 0.02 and 0.2 mM, respectively. A tr...

Journal: :Journal of bacteriology 1985
M E Barros D E Rawlings D R Woods

The glutamine synthetase (GS) gene glnA of Thiobacillus ferrooxidans was cloned on recombinant plasmid pMEB100 which enabled Escherichia coli glnA deletion mutants to utilize (NH4)2SO4 as the sole source of nitrogen. High levels of GS-specific activity were obtained in the E. coli glnA deletion mutants containing the T. ferrooxidans GS gene. The cloned T. ferrooxidans DNA fragment containing th...

Journal: :Microbiology 1996
R Powles S Deane D Rawlings

The gene for gamma-glutamylcysteine synthetase (gshA) from Thiobacillus ferrooxidans was isolated from a family of cosmids by its ability to complement an Escherichia coli gshA trxA double mutant which was unable to grow on minimal medium lacking glutathione. The predicted sequence of the gamma-glutamylcysteine synthetase was found to have only 18% amino acid sequence identity to the equivalent...

Journal: :Applied and Environmental Microbiology 1992

Journal: :Journal of General Microbiology 1978

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
farahnaz eghbali mohammad reza ehsani

sulfur emission from coal combustion presents many environmental problems. the techniques used to reduce the amount of sulfur in coal before combustion, include physical, chemical and biological processes.biological processes based on degradation of sulfur compounds by microorganisms offer many advantages over the conventional physical and chemical processes. the processes are performed under m...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید