Table 1.

Calculated and measured masses for the intact complex and dissociation products of MtGim C

	Subunit composition	Calculated mass/Da	Measured mass/Da
MtGimC	MtGimα2MtGimβ4	86,848.6	86,909.8  ± 17
Pentamer	MtGimα2MtGimβ3	72,985.9	72,999.4  ± 10
Tetramer	MtGimα2MtGimβ2	59,123.2	59,140.4  ± 13
Trimer	MtGimα2MtGimβ1	45,260.5	45,271.6  ± 11
	MtGimα1MtGimβ2	43,424.3	43,446.9  ± 14
Dimer	MtGimα2	31,397.8	31,399.4  ±  2
Monomer	MtGimα	15,698.9	15,699.8  ±  1
	MtGimβ	13,862.7	13,861.9  ±  0.8

All masses have been measured from peak series containing at least four charge states. The broad nature of the peaks for the higher oligomers, most likely caused by an association of counterions or water molecules, decreases the accuracy of the m/z values, leading to an increase in the standard deviation (16).