| X-RAY DIFFRACTION |
4.5 |
293 |
CRYSTALLISATION TOOK PLACE IN
THE EUROPEAN SPACE AGENCY (ESA) ADVANCED PROTEIN
CRYSTALLISATION FACILITY (APCF) ONBOARD THE NASA SPACE
SHUTTLE'S STS-95 MISSION. A NEW APCF REACTOR WITH A LONG
PROTEIN CHAMBER (67 MM) WAS DESIGNED TO PERFORM
CRYSTALLIZATION USING THE COUNTER-DIFFUSION METHOD UNDER
MICROGRAVITY CONDITIONS. THE PROTEIN CHAMBER WAS FILLED
WITH A SOLUTION OF 99 MG/ML OF HEN EGG WHITE LYSOZYME
(SUPPLIED BY SEIKAGAKU, BATCH NUMBER 100940, LOT E96302)
DISSOLVED IN 0.05 M ACETATE BUFFER (PH 4.5). THE SALT
CHAMBER CONTAINED 20% W/V NACL AND 0.05 M ACETATE BUFFER
(PH 4.5). THE ROTATORY PLUG CONNECTING THE PROTEIN AND
THE SALT CHAMBERS WAS FILLED WITH 10% W/V NACL, 0.5% W/V
AGAROSE GEL AND 0.05 M ACETATE BUFFER. CRYSTALLISATION
TOOK PLACE IN MICROGRAVITY AT 20+/-0.1 C., Counter-Diffusion in modified APCF reactors, temperature 293K |
