The Collinsella-1 RNA motif denotes a particular conserved RNA

RNA

Ribonucleic acid , or RNA, is one of the three major macromolecules that are essential for all known forms of life....

 structure discovered by bioinformatics

Bioinformatics

Bioinformatics is the application of computer science and information technology to the field of biology and medicine. Bioinformatics deals with algorithms, databases and information systems, web technologies, artificial intelligence and soft computing, information and computation theory, software...

. Of the six sequences belonging to this motif that were originally identified, five are from uncultivated bacteria

Bacteria

Bacteria are a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals...

 residing in the human

Human

Humans are the only living species in the Homo genus...

 gut

Gut (zoology)

In zoology, the gut, also known as the alimentary canal or alimentary tract, is a tube by which bilaterian animals transfer food to the digestion organs. In large bilaterians the gut generally also has an exit, the anus, by which the animal disposes of solid wastes...

, while only the sixth is in a cultivated species, Collinsella aerofaciens. The evidence supporting the stem-loop

Stem-loop

Stem-loop intramolecular base pairing is a pattern that can occur in single-stranded DNA or, more commonly, in RNA. The structure is also known as a hairpin or hairpin loop. It occurs when two regions of the same strand, usually complementary in nucleotide sequence when read in opposite directions,...

s designated as "P1" and "P2" is ambiguous.

See also

• Acido-Lenti-1 RNA motif
  Acido-Lenti-1 RNA motif
  The Acido-Lenti-1 RNA motif describes a predicted non-coding RNA that is found in bacteria within the phyla acidobacteria and lentisphaerae. It is sometimes found nearby to group II introns, but the reason for this apparent association is unknown.-See also:...
  
  
• Bacteroidales-1 RNA motif
  Bacteroidales-1 RNA motif
  The Bacteroidales-1 RNA motif is a conserved RNA structure identified by bioinformatics. It has been identified only in bacteria within the order Bacteroidales...
  
  
• Chloroflexi-1 RNA motif
  Chloroflexi-1 RNA motif
  The Chloroflexi-1 RNA motif is a conserved RNA structure detected by bioinformatics within the species Chloroflexus aggregans. C. aggregans has three predicted Chloroflexi-1 RNAs, which are located nearby to one another. This arrangement might suggest a repetitive element. C...
  
  
• Flavo-1 RNA motif
  Flavo-1 RNA motif
  The Flavo-1 RNA motif is a conserved RNA structure that was identified by bioinformatics. The vast majority of Flavo-1 RNAs are found in Flavobacteria, but some were detected in the phylum Bacteroidetes, which contains Flavobacteria, or the phylum Spirochaetes, which is evolutionarily related to...