GrassTFDB :: Browse Family::Maize

Displaying TUB Family from Maize


The small genome of Arabidopsis contains at least nine expressed beta-tubulin (TUB) genes, in contrast to the large genomes of vertebrate animals, which contain a maximum of seven expressed beta-tubulin genes. In this study, we report the structures of seven new TUB genes (TUB2, TUB3, TUB5, TUB6, TUB7, TUB8, and TUB9) of Arabidopsis. The sequences of TUB1 and TUB4 had been reported previously. Sequence similarities and unique structural features suggest that the nine TUB genes evolved by way of three branches in the plant beta-tubulin gene evolutionary tree. Two genes (TUB2 and TUB3) encode the same beta-tubulin isoform; thus, the nine genes predict eight different beta-tubulins. In contrast to the alpha-tubulin (TUA) genes with their divergent intron patterns, all nine TUB genes contain 2 introns at conserved positions. Noncoding 3' gene-specific hybridization probes have been constructed for all nine TUB genes and used in RNA gel blot analyses to demonstrate that all nine genes are transcribed. Two-dimensional protein immunoblot analyses have resolved at least seven different beta-tubulin isoforms in Arabidopsis, indicating that most, if not all, of the TUB transcripts are translated.

Protein Name
accepted / suggested
Gene Locus Synonym/
Gene Name
Clone in TFome Genome Browser
ZmTUB1 GRMZM2G068586 TUBTF1 pUT1397 View in Browser
ZmTUB2 GRMZM5G866954 TUBTF2 pUT3040 View in Browser
ZmTUB3 GRMZM2G046816 TUBTF3 pUT6073 View in Browser
ZmTUB4 GRMZM2G108228 TUBTF4 pUT5884 View in Browser
ZmTUB5 GRMZM2G435445 TUBTF5 View in Browser
ZmTUB6 GRMZM2G176340 TUBTF6 pUT3042 View in Browser
ZmTUB7 GRMZM2G163726 TUBTF7 pUT3142 View in Browser
ZmTUB8 GRMZM2G472945 TUBTF8 pUT6095 View in Browser
ZmTUB9 GRMZM2G115701 TUBTF9 View in Browser
ZmTUB10 GRMZM2G129288 TUBTF10 View in Browser
ZmTUB11 GRMZM2G378907 TUBTF11 View in Browser
ZmTUB12 GRMZM5G871407 TUBTF12 View in Browser
ZmTUB13 GRMZM2G349376 TUBTF13 View in Browser
ZmTUB14 GRMZM2G001272 TUBTF14 pUT6123 View in Browser
ZmTUB15 GRMZM2G062154 TUBTF15 View in Browser