Fig. 1

A Amino acid sequence alignment of AmelOBP4 with OBP4 from other species. TbasOBP4: OBP4 of Trissolcus basalis; OcorOBP1: OBP1 of Osmia cornuta; LhetOBP56d: OBP56d of Leptopilina heterotoma. Red box represents conserved amino acids domains including six highly conserved cysteines (labeled by green numbers below). The predicted secondary structures (e.g., α-helix) are shown above the corresponding sequences. B The phylogenetic tree of AmelOBPs family with other homologous proteins based on the method of Neighor-Joining (Bootstrap = 1000 times) using MEGA 6.0 software