Table 2.

Atomic Distances of 3.0 Å or Less between the Oxygen Atoms of TetraGalpA and Amino Acids, Ca2+ Ions, or Water Molecules

GalpA AtomsaInteracting AtomsbDistance (Å)
GalpA1
Ring interactionTyr-268
O-6AGA1Wat12.9
O-6B1Ca2+2.9
GalpA2
O-2Asp-162 O-δ22.7
O-2GA2Wat12.7
O-32Ca2+2.6
O-51Ca2+2.9
O-6A1Ca2+2.6
O-6AArg-245 NH-12.8
O-6BArg-245 NH-23.0
O-6BGA2Wat22.8
GalpA3
O-2Arg-223 NH-22.9
O-3Ser-196 O2.8
O-3Arg-223 NH-12.9
O-52Ca2+2.5
O-52CaWat23.0
O-6ALys-190 N-ζ2.8
O-6A2Ca2+2.3
O-6A2CaWat22.9
O-6B3Ca2+2.4
O-6B3CaWat32.8
GalpA4
O-22CaWat22.9
O-3GA4Wat12.8
O-4GA4Wat22.7
O-4Ser-308 O2.8
O-53Ca2+2.4
O-6A4Ca2+2.5
O-6A3Ca2+2.4
O-6AGA4Wat22.9
O-6B4CaWat12.6
  • a The positions of the atoms are indicated in Figure 4.

  • b xWaty refers to the Y water molecule associated with the X GalpA unit. zCa2+ refers to the Z position of the Ca2+ ion as defined in Figure 4.