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Table 1 Genome statistics

From: Comparative genomics highlights the unique biology of Methanomassiliicoccales, a Thermoplasmatales-related seventh order of methanogenic archaea that encodes pyrrolysine

Feature Ca. M. alvus” Ca. M. intestinalis” M. luminyensis
Genome sizea 1,666,795 1,931,651 2,637,810d
(2,620,233)
DNA G + C content 55.6% 41.3% 60.5%
% DNA coding region 89.5% 88.4% 87.6%
Intergenic regions mean size (SD)a 102 (175) 119 (264) 121 (238)
Genes mean G + C content 56.3% 42.4% 61.0%
Putative replicons 1(+1)b 1(+1)b 1 (+1)b
Extrachromosomal elements NAc NAc NAc
Total genes 1,705 1,882 2,713
RNA genes 52 50 52
rRNA genes (5S-16S-23S) 4 (2 - 1 - 1) 4 (2 - 1 - 1) 4 (2 - 1 - 1)
tRNA genes 48 46 48
Protein coding genes 1,653 1,832 2,661
Mean size of protein coding genes (SD)a 901 (667) 930 (890) 859 (676)
Median size of protein coding genesa 771 780 732
Gene products with function prediction 1,335 1,476 2,002
Gene products assigned to arCOGs 1,271 1,438 2,065
Gene products assigned Pfam domains 123 125 204
Gene products with signal peptides 247 336 512
Gene products with transmembrane helices 281 389 585
CRISPR repeats 1e 1 1
  1. aSizes are given in bp.
  2. bPresence of two different cdc6 genes per genome. See the text for more information.
  3. cNot available.
  4. dData from [8]: in bracket stands the total bp (26 contigs) available from database [GenBank: CAJE01000001 to CAJE01000026], analyzed in this study.
  5. ePresence of CRISPR repeats split into two neighboring loci (see Additional file 1: Table S3) surrounding a DNA sequence containing one gene encoding a putative transposase.