Volume 1 Issue 8
Aug.  2010
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Baoli Zhu, Xin Wang, Lanjuan Li. Human gut microbiome: the second genome of human body[J]. Protein&Cell, 2010, 1(8): 718-725. doi: 10.1007/s13238-010-0093-z
Citation: Baoli Zhu, Xin Wang, Lanjuan Li. Human gut microbiome: the second genome of human body[J]. Protein&Cell, 2010, 1(8): 718-725. doi: 10.1007/s13238-010-0093-z

Human gut microbiome: the second genome of human body

doi: 10.1007/s13238-010-0093-z
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The research grant is supported by the National Basic Research Program (973 Program) "The metagenomic study on HBV infected human intestinal tract" with Grant No. 2007CB513000.

  • Received Date: 2010-06-04
  • Rev Recd Date: 2010-07-01
  • The human body is actually a super-organism that is composed of 10 times more microbial cells than our body cells. Metagenomic study of the human microbiome has demonstrated that there are 3.3 million unique genes in human gut, 150 times more genes than our own genome, and the bacterial diversity analysis showed that about 1000 bacterial species are living in our gut and a majority of them belongs to the divisions of Firmicutes and Bacteriodetes. In addition, most people share a core microbiota that comprises 50-100 bacterial species when the frequency of abundance at phylotype level is not considered, and a core microbiome harboring more than 6000 functional gene groups is present in the majority of human gut surveyed till now. Gut bacteria are not only critical for regulating gut metabolism, but also important for host immune system as revealed by animal studies.
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