Fig. 3From: TMalphaDB and TMbetaDB: web servers to study the structural role of sequence motifs in α-helix and β-barrel domains of membrane proteinsϕ and ψ dihedral angles of TM β-strands. Average ϕ and ψ dihedral angles in TM β-strands containing P (n = 172 search=“P”) and G (n = 1031, search=“G”)Back to article page