{{Short description|Genus of Gram-positive anaerobic bacteria}} {{Italic title}} {{Automatic_taxobox | taxon = Ellagibacter | authority = Beltrán ''et al.'' 2018 | type_species = ''Ellagibacter isourolithinifaciens'' | type_species_authority = Beltrán ''et al.'' 2018 }}
'''''Ellagibacter''''' is a genus of Gram-positive and strictly anaerobic bacteria in the family Eggerthellaceae, within the phylum Actinomycetota. The type and only species, ''Ellagibacter isourolithinifaciens'', was isolated from a fecal sample of a healthy human.<ref name="Beltran2018" />
== Etymology == The genus name ''Ellagibacter'' is derived from modern Latin: ''acidum ellagicum'' (ellagic acid) and ''bacter'' (rod), meaning "ellagic acid-transforming rod."
== Characteristics == Members of this genus are obligate anaerobes that play a role in polyphenol metabolism in the human gut microbiome. ''E. isourolithinifaciens'' is known to convert ellagic acid into isourolithin A, a urolithin metabolite with potential health benefits including anti-inflammatory and antioxidant effects.<ref name="Beltran2018" /><ref name="Iglesias2023" />
== Species == As of 2025, the genus ''Ellagibacter'' includes only one validly published species: * ''Ellagibacter isourolithinifaciens''
== References == <references> <ref name="Beltran2018">{{cite journal |last1=Beltrán |first1=D. |last2=Romo-Vaquero |first2=M. |last3=Espín |first3=J.C. |last4=Tomás-Barberán |first4=F.A. |last5=Selma |first5=M.V. |title='''Ellagibacter isourolithinifaciens''' gen. nov., sp. nov., a new member of the family Eggerthellaceae, isolated from human gut |journal=International Journal of Systematic and Evolutionary Microbiology |volume=68 |issue=5 |pages=1707–1712 |date=May 2018 |doi=10.1099/ijsem.0.002735 |pmid=29583112 }}</ref>
<ref name="Iglesias2023">{{cite journal |last1=Iglesias-Aguirre |first1=C.E. |last2=García-Villalba |first2=R. |last3=Beltrán |first3=D. |last4=Frutos-Lisón |first4=M.D. |last5=Espín |first5=J.C. |last6=Tomás-Barberán |first6=F.A. |last7=Selma |first7=M.V. |title=Gut Bacteria Involved in Ellagic Acid Metabolism To Yield Human Urolithin Metabotypes Revealed |journal=Journal of Agricultural and Food Chemistry |volume=71 |issue=9 |pages=4029–4035 |date=March 8, 2023 |doi=10.1021/acs.jafc.2c08889 |pmid=36840624 |pmc=9999415 |bibcode=2023JAFC...71.4029I }}</ref> </references>
== External links == * [https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=2137577 NCBI Taxonomy Browser: ''Ellagibacter''] * [https://lpsn.dsmz.de/genus/ellagibacter LPSN entry for ''Ellagibacter'']
{{Taxonbar|from=Q63364854}}
Category:Gram-positive bacteria Category:Anaerobes Category:Bacteria genera Category:Monotypic bacteria genera Category:Bacteria described in 2018 Category:Actinomycetota