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Gel filtration chromatography of the water-eluted and Ni2+-nitrilotriacetic acid agarose-purified cellulosome fraction on a Superdex 75 preparation-grade column. Fractions I, II, and III are shown as solid lines, and standards are shown as dotted lines; (a, aldolase [158 kDa]; b, bovine serum albumin [67 kDa]).
