Katanobacteria

{{Short description|Phylum of bacteria}}

{{Taxobox

|name = Katanobacteria

|domain = Bacteria

|unranked_phylum = CPR group

|phylum = "Katanobacteria"

|phylum_authority = Hug et al. 2016b

}}

Katanobacteria is a bacterial phylum formerly known as WWE3. It has candidate status, meaning there are no cultured representatives, and is a member of the Candidate Phyla Radiation (CPR).

The Katanobacteria phylum was first proposed in 2008 following the analysis of 16S rRNA gene sequences from a mesophilic anaerobic digester.{{Cite journal|last1=Guermazi|first1=Sonda|last2=Daegelen|first2=Patrick|last3=Dauga|first3=Catherine|last4=Rivière|first4=Delphine|last5=Bouchez|first5=Théodore|last6=Godon|first6=Jean Jacques|last7=Gyapay|first7=Gábor|last8=Sghir|first8=Abdelghani|last9=Pelletier|first9=Eric|last10=Weissenbach|first10=Jean|last11=Le Paslier|first11=Denis|date=August 2008|title=Discovery and characterization of a new bacterial candidate division by an anaerobic sludge digester metagenomic approach|journal=Environmental Microbiology|volume=10|issue=8|pages=2111–2123|doi=10.1111/j.1462-2920.2008.01632.x|issn=1462-2920|pmc=2702496|pmid=18459975}} The name "Katanobacteria" comes from the Hebrew word "katan", which translates to "small".{{Cite journal|last1=Hug|first1=Laura A.|last2=Baker|first2=Brett J.|last3=Anantharaman|first3=Karthik|last4=Brown|first4=Christopher T.|last5=Probst|first5=Alexander J.|last6=Castelle|first6=Cindy J.|last7=Butterfield|first7=Cristina N.|last8=Hernsdorf|first8=Alex W.|last9=Amano|first9=Yuki|last10=Ise|first10=Kotaro|last11=Suzuki|first11=Yohey|date=2016-04-11|title=A new view of the tree of life|journal=Nature Microbiology|language=en|volume=1|issue=5|page=16048|doi=10.1038/nmicrobiol.2016.48|pmid=27572647|issn=2058-5276|doi-access=free}} This is presumably a nod to the small cell size and/or genome size of members of this phylum (and most members of the CPR).