However, when amino acid sequence alignment

analysis was carried out, the putative cadF (-like) ORFs from all 17 C. lari isolates examined in the present study showed amino acid residues of FALG (50% identity) within the amino acid positions 137 – 140, instead of the FRLS residues (Figure 4). No FRLS residues were also detected within any other regions of the cadF (-like) ORF from all 17 C. lari isolates examined. Interestingly, FNLG residues within AdpB (Ad-adhesin in p-Prevotella, B-second identified PI3K Inhibitor Library order adhesin) in Prevotella intermedia (a black-pigmented gram-negative anaerobe) [32] was 75% identical to the FALG from C. lari (Figure 4). Therefore, it may be important to clarify if the CadF (-like) protein from C. lari isolates can bind to fibronectin or not. An experiment is now in Daporinad progress to resolve this. In the present study, for the first time, we have described the cloning, ALK tumor sequencing and characterization of full-length Cla_0387 from the 16 C. lari isolates. The CMW values were estimated to be 23,689 – 23,875 Da

for the 16 C. lari isolates and C. lari RM2100 strain and these values were also equivalent to those from two C. jejuni and a C. coli reference strains (Table 2). In addition, the cadF (-like) gene and the Cla_0387 gene may possibly be functional within C. lari isolates, based on the present northern blot hybridization and RT-PCR observations, as shown in Figure 2A and 2B. Thus, the cadF (-like) gene and the Cla_0387 gene could be co-transcribed within C. lari organisms, consisting of an operon.

Since the Cla_0387 showed a high deduced amino acid sequence similarity to the Escherichia coli haloacid dehalogenase-like phosphatase [33], these two may have an important biological relationship within the C. lari cells. In the present study, the authors designed two novel primer pairs (f-/r-cadF1 and f-/r-cadF2) in silico for amplification of an approximate 2.3 kbp region, including the full-length cadF (-like) gene and its adjacent genetic loci, based on sequence information of C. lari RM2100, C. jejuni RM1221 and C. coli RM2228 strains, resulting in successful SPTLC1 amplification, TA-cloning and sequencing of those from the 16 C. lari isolates isolated from differencet sources and in several countries. Therefore, the present novel PCR primer pairs would be likely of value for, C. jejuni and C. coli organisms, as well as for other C. lari isolates. A dendrogram showing phylogenetic relationships was constructed by the NJ method [29], based on nucleotide sequence information of full-length cadF (-like) gene from 16 C. lari isolates and C. lari RM2100 and other thermophilic Campylobacter reference strains. As shown in Figure 5, the 17 C. lari isolates form a major cluster separating from the other three thermophilic Campylobacter spp. In addition, the 17 C. lari isolates form some minor clusters, respectively, based on nucleotide sequence information from cadF (-like) gene (Figure 5).