   2.1.2.10 | aminomethyltransferase/T-protein in complex with dihydrolipoate-bearing H-protein and 5-methyltetrahydrofolate, a complex mimicking the ternary complex in the reverse reaction, purified recombinant wild-type and mutant T-proteins, hanging drop vapor diffusion method, mixing of 22-25 mg/ml proteins, T-protein and H protein, with an equal volume of reservoir solution containing 0.095 M 2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulfonic acid, pH 7.5, 0.19 M calcium chloride, 26.6% v/v PEG 400, and 5% v/v glycerol, at 15°C, 4-5 days to 2 weeks, soaking of the native crystals in mother liquid containing 1 mM (6S)-5-methyltetrahydrofolate at 15°C for 4 h, X-ray diffraction structure determination and analysis at 2.0 A resolution, molecular replacement |
