. 2006 Aug 24;4:29. doi: 10.1186/1741-7007-4-29

Table 3.

PEP-CTERM domain abundance in environmental metagenome datasets

ID	Environmental source	Size (MB)	# PEP-CTERM	Relative abundance^a
13694	Sargasso sea: planktonic (filtered) marine	670	2	0.01
13696	Iron Mountain, CA: acid mine drainage biofilm	10	1	0.4
	Yellowstone hot spring microbial mats	168	150	4
13700	Whale Fall Community: microbial mat & rib bone	9	18	8
13699	Waseca County, MN: clay loam surface farm soil	12	84	29

^aData was normalized to results from the Comprehensive Microbial Resource which showed 256 hits from a database size of 1048 MB of DNA.