Table 1.

Δχ-tensor parameters for lanthanide ions in complex with LBT-Grb2^a

	Dy3+	Tb3+	Er3+	Tm3+
Δχ bax	22.7 ± 1.3	29.2 ± 1.7	−7.7 ± 0.7	−17.5 ± 1.6
Δχ brh	17.6 ± 0.7	16.9 ± 0.5	−7.3 ± 0.2	−17.1 ± 0.5
αc	106	97	104	99
βc	57	52	57	65
γc	53	34	36	27

^aΔχ-tensor parameters were determined relative to the conformer 1 of the family of NMR structures of Grb2 SH2 (1x0n.pdb). Metal ion coordinates were x = − 12.9, y = − 5.3, z = − 4.9

^bΔχ _ax and Δχ _rh values are in 10⁻³² (m³) and error estimates were obtained by the Monte-Carlo protocol using 100 partial PCS data sets in which 30% of the input data were randomly deleted

^cEuler angle rotations in ZYZ convention (degrees)