The Catalase tetramer is around there (232 kD according to the Table 1 in Mylonas and Svergun, J. Applied Cryst. 2007). The shape of the tetramer in the PDB (4BLC) seems reasonably globular.
Cheers, Kushol Kushol Gupta, Ph.D. Research Associate Van Duyne Laboratory - HHMI/Univ. of Pennsylvania School of Medicine [email protected] 215-573-7260 / 267-259-0082 -----Original Message----- From: CCP4 bulletin board [mailto:[email protected]] On Behalf Of Alexandra Deaconescu Sent: Saturday, February 19, 2011 7:47 PM To: [email protected] Subject: [ccp4bb] 250 kDa standard Dear ccp4bb enthusiasts: A question unrelated to ccp4: can anyone recommend a good 250 kDa standard for gel filtration that is commercially available? It could be a single polypeptide or an oligomer too... Thanks a lot! Bests, Alex
