Surface is packed

YhdA, a thermostable NADPH:FMN oxidoreductase fromBacillus subtil-is, reduces quinones via a ping-pong bi-bi mechanism with a pronounced preference for NADPH. The enzyme occurs as a stable tetramer in solu-tion. The two extended dimer surfaces are packed against each other by a 90rotation of one dimer with respect to the other.

12p vinaphone15 25-02-2013 46 4   Download

The degree of conservation of three-dimensional folds in protein superfami-lies is greater than that of amino acid sequences. Therefore, very different groups of residues (and schemes of residue packing) can be found displayed upon similar structural scaffolds.

13p viettel02 22-02-2013 43 3   Download