Selenomonas ruminantium GA192

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Bacillota (firmicutes)- Negativicutes - Selenomonadales - Selenomonadaceae

Introduction

Pseudoselenomonas ruminantium GA192T

Pseudoselenomonas ruminantium GA192T (DSM 2150) formerly Selenomonas ruminantium was isolated from bovine rumen contents from an animal fed fresh alfalfa in the USA [1]. GA192 is the type species of the genus Pseudoselenomonas within the family Selenomonadaceae and the type stain of the P. ruminantium species [2, 3]. GA192 is an anaerobic bacterium that ferments a broad range of carbohydrates and produces primarily propionate, lactate, and CO₂ [1, 2]. Lactate is not fermented [1], sulfate and fumarate but not nitrate are reduced.

The draft genome for PC 18 (3,387,070 bp) was generated through the Hungate1000 project with JGI [4]. A20,067 bp plasmid has been predicted from the genome sequence.

LPSN: Pseudoselenomonas ruminantium (Certes 1889) Heng and Kittelmann 2026

NCBI: Pseudoselenomonas ruminantium.

GTDB: Selenomonas_A ruminantium.

Risk group: 1.

Genome

Methylome

Methylome Motifs
motif # site methylated total sites % methylated
G(6mA)TC Example Example Example
G(6mA)CNNNNNCTC/
G(6mA)GNNNNNGTC
Example Example Example
GA(6mA)YNNNNNAATC/
G(6mA)TTNNNNRTTC
Example Example Example
CC(6mA)GNNNNNTCG/
CG(6mA)NNNNNCTGG
Example Example Example
GA(6mA)GNNNNNCTC/
G(6mA)GNNNNNCTTC
Example Example Example
GA(6mA)CNNNNNACT/
(6mA)GTNNNNNGTTC
Example Example Example

E.coli methylation strain

Completed, AG22058

Antibiotic MIC tests

MIC test strip result

MIC test strip result
Antibiotic MIC
Ampicillin 0.016ug/ml
Tetracycline 0.094ug/ml
Trimethoprim 8 ug/ml
Streptomycin 2 ug/ml
Spectinomycin 16ug/ml
Kanamycin 3 ug/ml
Chloramphenicol 0.5 ug/ml
Gentamicin 2 ug/ml
Erythromycin 0.2ug/ml

Defensefinder prediction

Defense Systems
Type / Subtype Mechanism Note
PD-Lambda-1 (PD-Lambda-1)
PrrC (PrrC)
RM (RM_Type_IV)
Abi2 (Abi2)
VP1839 (VP1839)
Wadjet (Wadjet_I) Lacks JetD (endonuclease)
Eleos (Eleos)
Cas (CAS_Class1-Subtype-I-F)
SspBCDE (SspBCDE) Lacks SspA & SspE (endonuclease)
Cas (CAS_Class1-Subtype-III-D)
AbiD (AbiD)
Mokosh (Mokosh_Type_I_B)
VP1851 (VP1851)
Cas (CAS_Cluster)

[1] Bryant MP. 1956. The characteristics of strains of Selenomonas isolated from bovine rumen contents. J Bacteriol 72: 162-7. doi: 10.1128/jb.72.2.162-167.1956.

[2] Heng YC, Kittelmann S. 2026. Taxonomic reclassification and expansion of the family Selenomonadaceae. Int J Syst Evol Microbiol 76: 7178. doi: 10.1099/ijsem.0.007178.

[3] https://bacdive.dsmz.de/strain/17156.

[4] Seshadri R, Leahy SC, Attwood GT, Teh KH, Lambie SC, Cookson AL, Eloe-Fadrosh EA, Pavlopoulos GA, Hadjithomas M, Varghese NJ, Paez-Espino D; Hungate1000 project collaborators; Perry R, Henderson G, Creevey CJ, Terrapon N, Lapebie P, Drula E, Lombard V, Rubin E, Kyrpides NC, Henrissat B, Woyke T, Ivanova NN, Kelly WJ. 2019. Cultivation and sequencing of rumen microbiome members from the Hungate1000 Collection. Nature Biotechnol 36: 359-367. doi: 10.1038/nbt.4110.e