Sequence Variation in HSP40 Gene among 16 Toxoplasma gondii Isolates from Different Hosts and Geographical Locations

Figure 1

Sequence analysis of HSP40 gene among different Toxoplasma gondii strains. Color boxes indicate 12 extrons of HSP40 gene and the gray one stands for the region of 3′-UTR. Black triangle and asterisk () indicate the translation start condon (ATG) and the stop one (TAG), respectively. Three pairs of specific primers (F40A/R40A, F40B/R40B, and F40C/R40C) used in this study were marked with arrows. Upper or lower case, respectively, indicates different nucleotide of extron or intron/3′-UTR. Point (.) and stub (–) among different nucleotides indicate identical or no nucleotide here compared with that of CTG strain (bottom line). The number beside the sequence stands for the variable sequence position for nucleotide, and black bar indicates 500 bp in length.