. Author manuscript; available in PMC: 2011 Nov 1.

Published in final edited form as: Inorg Chem. 2010 Nov 1;49(21):9921–9927. doi: 10.1021/ic101173b

Table 2.

Comparison of the Co coordination sphere in GSCbl and other Co-S bonded Cbls.

Cobalamin	Co-S (Å)	Co-NB3 (Å)	Fold angle (°)	Reference
X-ray crystallography
GSCbl	2.295(1)	2.074(3)	24.7(1)	This work
Na[γ-GluCysCbl]	2.267(2)	2.049(6)	24.2	11
Na[N-AcCysCbl]	2.25	2.06	17.5	3
CapSCbl-1 (trans isomer)	2.282(3)	2.106(5)	14.9	38
CapSCbl-2 (cis isomer)	2.261(4)	2.094(9)	14.2	38
NH₄[SO₃Cbl]	2.231(1)	2.134(4)	16.3	39
[(NH₂)₂CSCbl]Cl	2.300(2)	2.032(5)	14.8	40
NCSCbl	2.250(4)	1.994(4)	14.9	31
EXAFS
GSCbl	2.28±0.05	2.15±0.03	ND	9
CysCbl	2.34±0.03	2.13±0.04	ND	9
SO₃Cbl	2.35±0.02	2.16±0.04	ND	9