Electrothrix gigas


Formal styling
Electrothrix gigas Geelhoed et al., 2023
Effective publication
Geelhoed et al., 2023
SeqCode status
Valid (SeqCode)
Register List
seqco.de/r:wjq117qc (validated)
Cannonical URL


N.L. masc. n. gigas, a giant (nominative in apposition), referring to its very large cell diameter
Nomenclatural type
NCBI Assembly: GCA_022766165.1
Reference strain
AU1_5 (TS)
Nomenclatural status
Validly published under the SeqCode


Filamentous bacteria of centimeter length that inhabit the surface of marine and coastal sediment and conduct electrons from sulfide-oxidizing cells to oxygen-reducing cells. Cell diameters >2.5 µm (commonly 2.5-8 µm). Gliding motility. Gram-negative, with distinct ridges running longitudinally along the filament. Can assimilate acetate and propionate; CO2 fixation via the Wood-Ljungdahl pathway. Contains c-type cytochromes and type IV pili (PilA). Polyphosphate and polyglucose storage. Distinguishable by size, 16S rRNA gene sequence and genome.
Originally proposed as Ca. Electrothrix gigas by Geelhoed et al. 2023.
Additional high-quality genome by Sereika et al. 2023.
Proposed as valid species under the SeqCode by Plum-Jensen et al., in revision
Bacteria » Desulfobacterota » Desulfobulbia » Desulfobales » Desulfobulbaceae » Electrothrix » Electrothrix gigas
Electrothrix gtdb


NCBI Assembly:GCA_022766165.1
Metagenome-Assembled Genome (MAG)
Estimated Quality Metrics
  • Completeness: 94.04%
  • Contamination: 1.54%
  • Quality: 86.34
Ribosomal and transfer RNA genes
  • 1 16S rRNA (up to 100.0%)
  • 1 23S rRNA (up to 100.0%)
  • tRNAs for 20 amino acids
Sequencing depth
83.0 ×
Other features
  • G+C Content: 46.21%
  • Coding Density: 88.16%
  • Codon Table: 11
  • N50: 42,968 bp
  • Contigs: 162
  • Largest Contig: 161,489 bp
  • Assembly Length: 3,590,544 bp
  • Ambiguous Assembly Fraction: 2.8e-05%
Submitter comments
Illumina sequencing of DNA from 5 single filaments after WGA.
Since these 5 genomes were 99.85% identical (ANI) and came from the same marine sediment enrichment, they were co-assembled. Quality checks were by CheckM2.
Automated checks
See additional details


Outside links and data sources
Search sequences
Local history
Registered by
Schramm, Andreas 7 months ago
Submitted by
Schramm, Andreas 6 months ago
Validated by
Palmer, Marike 4 months ago
Date of priority
2023-12-22 10:46 PM (UTC)


Citation Title
Plum-Jensen et al., 2024, Systematic and Applied Microbiology First single-strain enrichments of Electrothrix cable bacteria, description of E. aestuarii sp. nov. and E. rattekaaiensis sp. nov., and proposal of a cable bacteria taxonomy following the rules of the SeqCode
Geelhoed et al., 2023, Microbiology Spectrum Indications for a genetic basis for big bacteria and description of the giant cable bacterium Candidatus Electrothrix gigas sp. nov
Effective publication
Sereika et al., 2023, The ISME Journal Closed genomes uncover a saltwater species of Candidatus Electronema and shed new light on the boundary between marine and freshwater cable bacteria

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