PMID- 19394244 OWN - NLM STAT- MEDLINE DCOM- 20090910 LR - 20200930 IS - 1873-2690 (Electronic) IS - 0981-9428 (Linking) VI - 47 IP - 9 DP - 2009 Sep TI - Molecular cloning and biochemical characterization of alpha- and beta-tubulin from potato plants (Solanum tuberosum L.). PG - 761-8 LID - 10.1016/j.plaphy.2009.04.001 [doi] AB - Few studies have investigated microtubules from plants that host pathogenic fungi. Considerable efforts are underway to find an antimitotic agent against plant pathogens like Phytophthora infestans. However, screening the effects of antifungal agents on plant tubulin in vivo or using purified native microtubule in vitro is a time consuming process. A recombinant, correctly folded, microtubule-like structure forming tubulin could accelerate research in this area. In this study, we cloned full length cDNAs isolated from potato leaves using reverse-transcribed polymerase chain reaction (RT-PCR). Solanum tuberosum (Stub) alpha-tubulin and beta-tubulin were predicted to encode 449 and 451 amino acid long proteins with molecular masses of 57 kDa and 60 kDa, respectively. Average yields of alpha- and beta-tubulin were 2.0-3.5 mg l(-1) and 1.3-3.0 mg l(-1) of culture, respectively. The amino acids, His6, Glu198, and Phe170 involved in benomyl sensitivity were conserved in Stub tubulin. The dimerization of tubulin monomers was confirmed by western blot analysis. When combined under appropriate conditions, these recombinant alpha- and beta-tubulins were capable of polymerizing into microtubules. Accessibility of cysteine residues of tubulin revealed that important ligand binding sites were folded correctly. This recombinant tubulin could serve as a control of phytotoxicity of selected antimitotic fungicide compounds during in vitro screening experiments. FAU - Koo, Bon-Sung AU - Koo BS AD - Fermentation and Food Processing Division, Department of Korean Food Research for Globalization, National Academy of Agricultural Science, Suwon 441 857, South Korea. FAU - Kalme, Satish AU - Kalme S FAU - Yeo, Soo-Hwan AU - Yeo SH FAU - Lee, Su-Jae AU - Lee SJ FAU - Yoon, Moon-Young AU - Yoon MY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090409 PL - France TA - Plant Physiol Biochem JT - Plant physiology and biochemistry : PPB JID - 9882449 RN - 0 (Tubulin) RN - K848JZ4886 (Cysteine) SB - IM MH - Amino Acid Sequence MH - Cloning, Molecular MH - Computational Biology MH - Cysteine/genetics MH - Dimerization MH - Genes, Plant MH - Microtubules/metabolism MH - Mitosis MH - Molecular Sequence Data MH - Reverse Transcriptase Polymerase Chain Reaction MH - Sequence Homology, Amino Acid MH - Software MH - Solanum tuberosum/*genetics MH - Tubulin/*genetics EDAT- 2009/04/28 09:00 MHDA- 2009/09/11 06:00 CRDT- 2009/04/28 09:00 PHST- 2008/09/30 00:00 [received] PHST- 2009/03/30 00:00 [revised] PHST- 2009/04/01 00:00 [accepted] PHST- 2009/04/28 09:00 [entrez] PHST- 2009/04/28 09:00 [pubmed] PHST- 2009/09/11 06:00 [medline] AID - S0981-9428(09)00104-1 [pii] AID - 10.1016/j.plaphy.2009.04.001 [doi] PST - ppublish SO - Plant Physiol Biochem. 2009 Sep;47(9):761-8. doi: 10.1016/j.plaphy.2009.04.001. Epub 2009 Apr 9.