Transcriptional Organization and Regulation of Magnetosome Operons in Magnetospirillum gryphiswaldense
نویسندگان
چکیده
منابع مشابه
Transcriptional organization and regulation of magnetosome operons in Magnetospirillum gryphiswaldense.
Genes involved in magnetite biomineralization are clustered within the genomic magnetosome island of Magnetospirillum gryphiswaldense. Their transcriptional organization and regulation were studied by several approaches. Cotranscription of genes within the mamAB, mamDC, and mms clusters was demonstrated by reverse transcription-PCR (RT-PCR) of intergenic regions, indicating the presence of long...
متن کاملGenetic dissection of the mamAB and mms6 operons reveals a gene set essential for magnetosome biogenesis in Magnetospirillum gryphiswaldense.
Biosynthesis of bacterial magnetosomes, which are intracellular membrane-enclosed, nanosized magnetic crystals, is controlled by a set of >30 specific genes. In Magnetospirillum gryphiswaldense, these are clustered mostly within a large conserved genomic magnetosome island (MAI) comprising the mms6, mamGFDC, mamAB, and mamXY operons. Here, we demonstrate that the five previously uncharacterized...
متن کاملBiochemical and proteomic analysis of the magnetosome membrane in Magnetospirillum gryphiswaldense.
We analyzed the biochemical composition of the magnetosome membrane (MM) in Magnetospirillum gryphiswaldense. Isolated magnetosomes were associated with phospholipids and fatty acids which were similar to phospholipids and fatty acids from other subcellular compartments (i.e., outer and cytoplasmic membranes) but were present in different proportions. The binding characteristics of MM-associate...
متن کاملFeoB 2 functions in magnetosome formation and oxidative stress 2 protection in Magnetospirillum gryphiswaldense strain
24 Magnetotactic bacteria (MTB) synthesize unique organelles, the magnetosomes, 25 which are intracellular nanometer-sized, membrane-enveloped magnetite. The 26 biomineralization of magnetosomes involves the uptake large amounts of iron. 27 However, the iron metabolism of MTB is not well understood. The genome of the 28 magnetotactic bacterium Magnetospirillum gryphiswaldense strain MSR-1 conta...
متن کاملFeoB2 Functions in magnetosome formation and oxidative stress protection in Magnetospirillum gryphiswaldense strain MSR-1.
Magnetotactic bacteria (MTB) synthesize unique organelles, the magnetosomes, which are intracellular nanometer-sized, membrane-enveloped magnetite. The biomineralization of magnetosomes involves the uptake of large amounts of iron. However, the iron metabolism of MTB is not well understood. The genome of the magnetotactic bacterium Magnetospirillum gryphiswaldense strain MSR-1 contains two ferr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 2006
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.00201-06