Nanobacterium sanguineum: Difference between revisions

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==Description and significance==
==Description and significance==
Describe the appearance, habitat, etc. of the organism, and why it is important enough to have its genome sequencedDescribe how and where it was isolated.
The genus ''Nanobacterium'' is said to contain a group of microbes that, like the name suggests, have dimensions considerably lower than that of regular bacteria, and perhaps even rival those of viruses. Since its discovery, nanobacteria have been the subject of consistent controversy; due to the significant size difference, some researchers have debated whether or not the so-called microorganisms are even alive, much less realOnly recently has it subsided, due to new studies being released.
Include a picture or two (with sources) if you can find them.
 
The first discernable species of nanobacteria was dubbed ''Nanobacterium sanguineum'' in 1998 by Finnish researchers E. Olavi Kajander and Nev Ciftcioglu; together they found evidence of self-replicating nanobacteria in the blood of humans and cows, along with the presence of 16S ribosomal RNA, evidence that the microbes are indeed alive. In addition, they discovered a unique characteristic among nanobacteria; they all seemed to produce a thick cell envelope of sorts consisting of either calcium compounds or apatite.  Due to this property, nanobacteria was hypothesized to be the causes of calcification in certain parts of the body (i.e. kidney stones, plaques in various organs).
 
However, a couple years later, it was theorized that the particles discovered may not have actually been alive or self-replicating at all.  According to a paper published in 2000, the replication witnessed by Kajander and Ciftcioglu may have been due to the properties of apatite itself


==Genome structure==
==Genome structure==
Describe the size and content of the genome.  How many chromosomes?  Circular or linear?  Other interesting features?  What is known about its sequence?
Due to the relatively controversial nature of nanobacteria, the genome of any of the species within the genus have yet to be sequencedHowever, now that new evidence has been seen of nanobacteria truly being alive, extracting the 16S ribosomal RNA of any of its species may be the first step to sequencing the genome.
Does it have any plasmids?  Are they important to the organism's lifestyle?


==Cell structure and metabolism==
==Cell structure and metabolism==

Revision as of 10:10, 29 August 2007

A Microbial Biorealm page on the genus Nanobacterium sanguineum

Classification

Higher order taxa

cellular organisms; Bacteria; unclassified Bacteria; Nanobacterium

Species

NCBI: Taxonomy

Nanobacterium sanguineum

Description and significance

The genus Nanobacterium is said to contain a group of microbes that, like the name suggests, have dimensions considerably lower than that of regular bacteria, and perhaps even rival those of viruses. Since its discovery, nanobacteria have been the subject of consistent controversy; due to the significant size difference, some researchers have debated whether or not the so-called microorganisms are even alive, much less real. Only recently has it subsided, due to new studies being released.

The first discernable species of nanobacteria was dubbed Nanobacterium sanguineum in 1998 by Finnish researchers E. Olavi Kajander and Nev Ciftcioglu; together they found evidence of self-replicating nanobacteria in the blood of humans and cows, along with the presence of 16S ribosomal RNA, evidence that the microbes are indeed alive. In addition, they discovered a unique characteristic among nanobacteria; they all seemed to produce a thick cell envelope of sorts consisting of either calcium compounds or apatite. Due to this property, nanobacteria was hypothesized to be the causes of calcification in certain parts of the body (i.e. kidney stones, plaques in various organs).

However, a couple years later, it was theorized that the particles discovered may not have actually been alive or self-replicating at all. According to a paper published in 2000, the replication witnessed by Kajander and Ciftcioglu may have been due to the properties of apatite itself

Genome structure

Due to the relatively controversial nature of nanobacteria, the genome of any of the species within the genus have yet to be sequenced. However, now that new evidence has been seen of nanobacteria truly being alive, extracting the 16S ribosomal RNA of any of its species may be the first step to sequencing the genome.

Cell structure and metabolism

Describe any interesting features and/or cell structures; how it gains energy; what important molecules it produces.

Ecology

Describe any interactions with other organisms (included eukaryotes), contributions to the environment, effect on environment, etc.

Pathology

How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.

Application to Biotechnology

Does this organism produce any useful compounds or enzymes? What are they and how are they used?

Current Research

Enter summaries of the most recent research here--at least three required

References

[Sample reference] Takai, K., Sugai, A., Itoh, T., and Horikoshi, K. "Palaeococcus ferrophilus gen. nov., sp. nov., a barophilic, hyperthermophilic archaeon from a deep-sea hydrothermal vent chimney". International Journal of Systematic and Evolutionary Microbiology. 2000. Volume 50. p. 489-500.

Edited by student of Rachel Larsen