DNA sequencing and analysis. The DNA sequencing was
performed using the MegaBACE 1000 DNA analysis system
(GE Healthcare, Piscataway, NJ), and the sequence obtained
was analyzed using software programs including BLAST
(www.ncbi.nlm.nih.gov), Multalin (http://bioinfo.genotoul.fr/
multalin/multalin.html), BioEdit version 7.0.9 (www.mbio.ncsu
.edu/BioEdit/BioEdit.html), and Compute pI/Mw tool (http://
web.expasy.org/compute_pi/).