An unrooted phylogenetic tree of GGPP synthases from filamentous fungi calculated by the neighbor joining method. Proteins predicted to be peroxisomal or mitochondrial are labeled red or green, respectively. P. paxilli PaxG and GgsA are in bold. The accession numbers of the corresponding sequences are as follows: P. paxilli PaxG, AAK11531, GgsA, AAK11525; A. flavus AtmG, AAT65717; A. fumigatus AFUA_8G02400, EAL84928, AFUA_1G13160, EAL90648; A. nidulans AN8143.2, EAA59165, AN0654.2, EAA65430; A. niger An03g00860, CAK38059, An08g06160, CAK45586; A. oryzae AO090113000170, BAE63215, AO090012000573, BAE60729; F. fujikuroi Ff Ggs2, CAA75568, Ff Ggs1, CAA65644; F. graminearum FG04591.1, EAA72205, FG10097.1, EAA68323; M. grisea MGG_00758, EDK02589; N. crassa Al-3, P24322; N. lolii LtmG, AAW88510, Nl Ggs1, AAW88513