BIOINORGANIC CHEMISTRY A Short Course Second Edition

da+1

M 1

potassium ions

magnesium ions

dt-1 ΩG in spacefill

P2 tetraloop

(stick format)

P8 receptor

U1A loop

gray

P6

greenP3 green

P8

blue

P7

blue

P4

green

P9.0

blue

P9

blue

P5

green

P10

orange

P1

orange

P2

orange

Figure 6.7 A bacterial self - splicing group I intron with both exons (PDB: 1U6B).
Visualized using CambridgeSoft Chem3D Ultra 10.0 with notations in ChemDraw
Ultra 10.0.(Printed with permission of CambridgeSoft Corporation.)