Non-canonical active site architecture of the radical SAM thiamin pyrimidine synthase.
Fenwick, M.K., Mehta, A.P., Zhang, Y., Abdelwahed, S.H., Begley, T.P., Ealick, S.E.(null) Nat Commun 6: 6480-6480
- PubMed: 25813242 
- DOI: 10.1038/ncomms7480
- Primary Citation of Related Structures:  
4S25, 4S26, 4S27, 4S28, 4S29, 4S2A - PubMed Abstract: 
Radical S-adenosylmethionine (SAM) enzymes use a [4Fe-4S] cluster to generate a 5'-deoxyadenosyl radical. Canonical radical SAM enzymes are characterized by a β-barrel-like fold and SAM anchors to the differentiated iron of the cluster, which is located near the amino terminus and within the β-barrel, through its amino and carboxylate groups ...