title: Acidaminococcus intestini sp. nov., isolated from human clinical samples.
abstract: Eleven strains of a hitherto unknown, Gram-negative, anaerobic coccus were recovered from various human clinical samples of patients hospitalized in two geographically distant French hospitals. These strains displayed the morphology and growth characteristics of those related to the genus Acidaminococcus. The clinical isolates shared at least 99.9 and 99.7 % of their nucleotide positions in the 16S and 23S rRNA gene sequences, respectively. They displayed 95.6 and 88.9 % 16S and 23S rRNA gene sequence similarities, respectively, with Acidaminococcus fermentans. The 16S rRNA-based phylogeny revealed that all the clinical isolates grouped in a statistically well supported cluster separate from A. fermentans. Enzymic activity profiles as well as metabolic end product patterns, including propionic acid production, differentiated the novel bacteria from A. fermentans. Finally, phenotypic, genotypic and phylogenetic data, including large-scale chromosome structure and DNA G+C content, supported the proposal of a novel species of the genus Acidaminococcus, for which the name Acidaminococcus intestini sp. nov. is proposed. The type strain is ADV 255.99(T) (=AIP 283.01(T)=CIP 108586(T)=CCUG 50930(T)).
authors.affiliation: Université Montpellier 1, Faculté de Pharmacie, Laboratoire de Bactériologie-Virologie, 15 Avenue Charles Flahault, BP 14491, 34060 Montpellier Cedex 5, France.
authors.forename: Estelle
authors.initials: E
authors.lastname: Jumas-Bilak
authors.affiliation: Institut Pasteur, Centre National de Référence des Bactéries Anaérobies et du Botulisme, 25 rue du Dr Roux, 75724 Paris Cedex 15, France.
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Carlier
authors.affiliation: Centre Hospitalier et Universitaire de Montpellier, Hôpital Arnaud de Villeneuve, Laboratoire de Bactériologie, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier Cedex 5, France.
authors.forename: Hélène
authors.initials: H
authors.lastname: Jean-Pierre
authors.affiliation: Centre Hospitalier et Universitaire de Nancy, Hôpital Central, Laboratoire de Bactériologie, 29 avenue du Maréchal de Lattre de Tassigny, 54035 Nancy Cedex, France.
authors.forename: Francine
authors.initials: F
authors.lastname: Mory
authors.affiliation: Université Montpellier 1, Faculté de Pharmacie, Laboratoire de Bactériologie-Virologie, 15 Avenue Charles Flahault, BP 14491, 34060 Montpellier Cedex 5, France.
authors.forename: Corinne
authors.initials: C
authors.lastname: Teyssier
authors.affiliation: Centre Hospitalier et Universitaire de Montpellier, Hôpital Arnaud de Villeneuve, Laboratoire de Bactériologie, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier Cedex 5, France.
authors.forename: Bernard
authors.initials: B
authors.lastname: Gay
authors.affiliation: Centre Hospitalier et Universitaire de Montpellier, Hôpital Arnaud de Villeneuve, Laboratoire de Bactériologie, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier Cedex 5, France.
authors.forename: Josiane
authors.initials: J
authors.lastname: Campos
authors.affiliation: Centre Hospitalier et Universitaire de Montpellier, Hôpital Arnaud de Villeneuve, Laboratoire de Bactériologie, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier Cedex 5, France.
authors.forename: Hélène
authors.initials: H
authors.lastname: Marchandin
mesh_terms: D045850:Acidaminococcus / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification* / Q000502:physiology; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000693:Anaerobiosis / Q000502:physiology; D001426:Bacterial Proteins / Q000378:metabolism; D015373:Bacterial Typing Techniques; D001482:Base Composition; D002876:Chromosomes, Bacterial / Q000235:genetics; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D004798:Enzymes / Q000378:metabolism; D005260:Female; D005602:France; D020459:Genes, rRNA; D016905:Gram-Negative Bacterial Infections / Q000382:microbiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012338:RNA, Ribosomal, 23S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid
chemical_list: D001426:Bacterial Proteins; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D004798:Enzymes; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D012338:RNA, Ribosomal, 23S