Amino acid and phylogenetic analysis of LreEF1A4. (A) Deduced amino acid sequence of LreEF1A4 from Lilium regale. The central regions (G-1 to G-4) involved in guanosine 5′-diphosphate/ guanosine 5′-triphosphate (GDP/GTP) exchange and GTP hydrolysis are boxed in blue, red, orange, and purple, respectively. The conserved three elements GXXXXGK (G14–K20), DXPG (D91–G94), and NKXD (N153–D156) in the GTP-binding domain are shaded in grey. Asterisks indicate the GTP-binding elongation factor signature. (B) Phylogenetic tree of LreEF1A4 with three other L. regale LreEF1As, Petunia hybrida PheEF1A (Peaxi162Scf00351g00321, Sol Genomics Network database), Lycopersicum esculentum LeeEF1A (P17786), Solanum tuberosum SteEF1A (XP_006340223), Nicotiana tabacum NteEF1A (XP_016492900), Glycine max GmeEF1A (P25698), Triticum aestivum TaeEF1A (AQU14666), Arabidopsis AteEF1A1 (At1g07920), AteEF1A2 (At1g07930), AteEF1A3 (At1g07940), and AteEF1A4 (At5g60390), Oryza sativa OseEF1A1 (BAA23657), OseEF1A2 (BAA23658), OseEF1A3 (BAA23659), and OseEF1A4 (BAA23660), Gossypium hirsutum GheEF1A1 (ABA12217), GheEF1A2 (ABA12218), GheEF1A3 (ABA12219), GheEF1A4 (ABA12220), GheEF1A5 (ABA12221), GheEF1A6 (ABA12222), GheEF1A7 (ABA12223), GheEF1A8 (ABA12224), and GheEF1A9 (ABA12225), and Zea mays ZmeEF1A1 (AAF42976), ZmeEF1A2 (AAF42977), ZmeEF1A3 (AAF42978), ZmeEF1A4 (AAF42979), ZmeEF1A5 (AAF42980), ZmeEF1A6 (AAF42981), and ZmeEF1A7 (AAF42982). LreEF1A4 and PheEF1A are highlighted by solid and hollow circles. Boot-strap values were determined as a percentage of 1000 replicates and shown at corresponding branch nodes. Scale bar denotes the number of amino acid substitutions per site.