TABLE 1.

PHAT probe candidates used for the calculation of Simpson's diversity index and entropy calculations^a

Fragment	Prevalence (%)	No. of rectal isolatesb	Homology	Locus identifier
sJX198	43.7	547	Putative C4-dicarboxylate-binding periplasmic protein in CFT073	NP_757279
sJX210	44.6	547	Protein YjgK from CFT073	NP_757200
sSU32	40.0	88	Hypothetical protein from CFT073	NP_755106
sJX76	49.0	547	Hypothetical outer membrane usher protein precursor from CFT073	NP_756076
sJX83	50	88	Putative iron compound receptor from CFT073	NP_755646
sJX150	53.0	547	No known homology
sRB19	54.3	313	Conserved hypothetical protein from Salmonella enterica serovar Typhi strain CT18	NP_458920
sLZ13	42.7	350	Usher protein
sJX80	40.9	88	Hypothetical protein YadM precursor from CFT073	NP_752119
sJX206	54.7	547	Nucleoside-specific channel-forming protein TSX in CFT073	NP_756748
sJX208	57.8	547	Putative conserved protein from CFT073	NP_751977

^aProbes are listed in the order used for the entropy calculation.

^bThe number of rectal isolates in which the prevalence of different gene fragments was determined. sLZ-, sJX-, sRB-, and sSU-prefixed gene fragments were derived from different genomic subtraction experiments that are published elsewhere (4, 23, 28, 30).