Structure-Based Analysis of the Ligand-Binding Mechanism for DhelOBP21, a C-minus Odorant Binding Protein, from Dastarcus helophoroides (Fairmaire; Coleoptera: Bothrideridae).

Hence THP12 (1C3Y) might represent a more reasonable template for DhelOBP21 than other proteins from Hymenoptera, Lepidoptera, or Dipterans, such as AmelOBP14, BmorGOBP2, or AgamOBP1, respectively (3) The sequence similarity between 1C3Y and DhelOBP21 is 42% (E-value: 2e-21), which is the significantly higher than the others (27% or lower) and this difference may be significant.

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