6.3.1.8	?	x * 90000, SDS-PAGE	
6.3.1.8	dimer	2 * 70000, analytical ultracentrifugation	
6.3.1.8	monomer	1 * 90000, SDS-PAGE	
6.3.1.8	monomer	1 * 86000, SDS-PAGE	
6.3.1.8	additional information	in vivo a complex between EC 6.3.1.8 and EC 6.3.1.9 exists that persists during purification