Figure 1
Crystal structure of BT_3984 from B. thetaiotaomicron VPI-5482. (a) Stereo ribbon diagram of the BT_3984 monomer color-coded from the N-terminus (blue) to the C-terminus (red). Helices H1–H25 and β-strands (β1–β4) are indicated. (b) Ribbon diagram in the same orientation as (a) showing the two subdomains of BT-3984 colored in blue and red for the N- and C-terminal regions, respectively. (c) Ribbon diagram in the same orientation as in (a) showing the four TPRs present in BT_3984: from the N- to C-terminus, TPR1 (blue), TPR2 (green), TPR3 (orange) and TPR4 (red). (d) Diagram showing the secondary-structure elements of BT_3984 superimposed on its primary sequence. The labeling of secondary-structure elements is in accord with PDBsum (https://www.ebi.ac.uk/pdbsum
), where α-helices are labeled H1, H2, H3 etc., β-strands are labeled and β-turns and γ-turns are designated by their respective Greek letters (β, γ). For BT_3984, the α-helices (H1–H8, H10–H11, H14, H16–H17 and H19–H25), 310-helices (H9, H12–H13, H15 and H18) and β-strands (β1–4) are indicated. |