Volume 178, Issue 1 pp. 183-190

Sequence and transcriptional studies of five clustered flagellin genes from hyperthermophilic archaeon Pyrococcus kodakaraensis KOD1

Keisuke Nagahisa

Keisuke Nagahisa

Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

Search for more papers by this author
Satoshi Ezaki

Satoshi Ezaki

Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Yoshidahonmachi, Sakyo-ku, Kyoto 606-8501, Japan

Search for more papers by this author
Shinsuke Fujiwara

Shinsuke Fujiwara

Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

Search for more papers by this author
Tadayuki Imanaka

Tadayuki Imanaka

Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Yoshidahonmachi, Sakyo-ku, Kyoto 606-8501, Japan

Search for more papers by this author
Masahiro Takagi

Corresponding Author

Masahiro Takagi

Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

*Corresponding author. Tel.: +81 (6) 6879-7442; Fax: +81 (6) 6879-7441, E-mail address: [email protected]Search for more papers by this author
First published: 17 January 2006
Citations: 3

Abstract

Five clustered genes (flaB1, flaB2, flaB3, flaB4 and flaB5) for multiple subunits of flagellar filaments from hyperthermophilic archaeon Pyrococcus kodakaraensis KOD1 were cloned and sequenced. Deduced amino acid sequences were aligned and it was revealed that five flagellin genes are homologous especially in the N-terminal hydrophobic region which might be important for interaction among flagellin subunits. Phylogenetic analysis was performed among archaeal flagellins from methanogens, an extreme halophile and our hyperthermophile, indicating that KOD1 flagellins were grouped together with methanogenic counterparts and were distinguishable from halophilic flagellins. Northern analysis of transcripts from flagellin genes from P. kodakaraensis KOD1 revealed that four major transcripts (0.98, 3.7, 5.4 and 9.2 kb) initiating from immediately upstream of flaB1 encode different combinations of five flagellins.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.