Indication for Co-evolution of Lactobacillus johnsonii with its hosts

BMC Microbiology

Table 2 Number of alleles and diversity index values at the studied 14 loci among L. johnsonii isolates

Locus	Core motif size (bp) and no. of repeats^a,b	Gene product	No. of alleles or ST^c,d	Diversity index
SSR loci
LJ480	(480)₃	Hypothetical protein	5	0.47
LJ90	(90)₉	Hypothetical protein	7	0.56
LJ66	(66)₇	Hypothetical protein	5	0.50
LJ27	(27)₆	Hypothetical protein	10	0.76
LJ18	(18)₃	Hypothetical protein	2	0.28
LJ12	(12)₄	Signal recognition particle receptor FtsY	7	0.72
LJ9	(9)₃	Phosphoenolpyruvate-dependent sugar phosphotransferase system EIIC	3	0.66
LJ6	(6)₇	Putative tyrosine-protein kinase	6	0.74
LJ6_1	(6)₃	Cell-wall associated serine proteinase	3	0.29
LJ3	(3)₅	Hypothetical protein	4	0.64
LJ_mono	(1)₁₁	Noncoding	5	0.44
MLST	Sequence length^b (bp)
LJ0017^e	1113	‘Conserved hypothetical’ gene	23
LJ0648	522	‘Conserved hypothetical’ gene	24
LJ1632	286	‘Conserved hypothetical’ gene	10

^a Subscript numbers are numbers of motif repeats. SSR loci have non-perfect repeats except for loci LJ3 and LJ_mono.
^b Based on the genome sequence of L. johnsonii NCC 533.
^c Allele: number of repeat variant at SSR; ST: number of sequence types at ‘Conserved hypothetical’ genes.
^d No. of alleles or ST: MLST genes and SSR loci, except for the locus LJ3, included a null allele.
^e Isolates: LJ_352, LJ_353, LJ_363, LJ_365, LJ_ch1, LJ_c2-8, LJ_c5-1, LJc_3-4 and LJ_c6-5 had a deletion of 903 bp.

ISSN: 1471-2180