TABLE 3.

Comparison of Pirellula- and Planctomyces-specific 16S rRNA signature nucleotides for Pirellula-like and Planctomyces-like clones^a

Taxon	Nucleotide at positionb:
	114	115	312	313	680	710	948	1100	1233
Planctomyces	G	U	A	C	C	G	C	G, A	G
Group I	G	U	A	C	C	G	G	U	C
Group II	G	U	A	C	A	U	G	U	C
Pirellula	A	G	C	U	A	U	G	U	C
Group III	A	G (C)	C (G)	U	A (C)	G (U)	G	U	C
Group IV	A	U	A	U	G	C	G	U	C

^aSignature nucleotides were obtained from reference 16. Nucleotide differences are underlined. Bases present in a minority of the clones are in parentheses.

^bE. coli numbering (5).