TABLE 4.

Distribution of clones in the fresh and mature sludge archaeal clone libraries

Putative divisionNo. of clones (no. of phylotypes)Closest cultured species or environmental clone (accession no.)a% Sequence identity
F-AM-A
Methanomicrobiales177 (2)201 (3)Methanoculleus bourgensis (AY196674)96-98
Methanobacteriales1 (1)0Methanothermobacter thermautotrophicus (EF100758)98
Uncertain17 (1)0Clone GZK24 (AJ576219)99
  • a Environmental clones are given for sequences not closely related to any cultured species.