Identification and characterization of membrane receptor protein YueB in Bacillus subtilis isolated from Thua Nao (Thai fermented soybean)
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Creator Pornthip Chawapun
Title Identification and characterization of membrane receptor protein YueB in Bacillus subtilis isolated from Thua Nao (Thai fermented soybean)
Contributor Pornthip Chawapun, Padchanee Sangthong, Pairote Wongputtisin, Keitarou Kimura, Supawadee Sriyam6
Publisher Asia-Pacific Journal of Science and Technology
Publication Year 2562
Journal Title Asia-Pacific Journal of Science and Technology
Journal Vol. 24
Journal No. 4
Page no. 1-11
Keyword Thua Nao, 16S-23S rRNAs, Bacillus subtilis, yueB gene, YueB membrane receptor protein
URL Website https://www.tci-thaijo.org/index.php/APST
Website title https://www.tci-thaijo.org/index.php/APST/article/view/176067/161172
ISSN 2539-6293
Abstract Thua nao (Thai fermented soybean) is a conventional and spontaneously fermented soybean in northern Thailand. The fermentation process relies on certain microbial activities, especially the Bacillus species. Bacteriophage contamination on Thua nao can rapidly decrease the Bacillus growth and the quality of any related products. The bacteriophage infection occurred through the YueB membrane receptor protein (coded by yueB gene) on the bacterial surface. Twenty isolates including Bacillus spp. were isolated from Thua nao. Phylogenetic analysis of Bacillus was determined using 16S-23S rRNAs nucleotide sequencing and compared with those obtained from the GenBankฎ database. Twenty Bacillus spp. isolated were classified into six clusters, which included Bacillus amyloliquefaciens, B. aryabhattai, B. cereus, B. licheniformis, B. sonorensis, B. subtilis and B. vallismortis. B. subtilis isolate TM4, TM5, TK7 and MR4 were selected to determine the variation of nucleotide sequences of yueB gene. Approximately 3.2 kb of yueB gene were amplified by Polymerase chain reaction (PCR) and directly sequencing. The translation of proteins retrieved 1,059 amino acid residues in all the isolate strains. The similarity alignment protein sequence of B. subtilis 168 as a reference strain revealed maximum identity scores of 81% and 1% of the gaps on the protein BLASTX alignment tools. The secondary structure of YueB protein indicated that the six transmembrane domain regions at one N-terminal and five C-terminal from B. subtilis isolate MR4, TK7, TM4 and TM5 were similar to that of B. subtilis 168. At the position between 200 to 600 amino acid residues, four regions were folded as coiled coil structures.
Asia-Pacific Journal of Science and Technology

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