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Information on EC - 2-(3-amino-3-carboxypropyl)histidine synthase

for references in articles please use BRENDA:EC2.5.1.108
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IUBMB Comments
A [4Fe-4S] enzyme that modifies a histidine residue of the translation elongation factor 2 (EF2) via a 3-amino-3-carboxypropyl radical. The enzyme is present in archae and eukaryotes but not in eubacteria. The enzyme is a member of the 'AdoMet radical' (radical SAM) family and generates the 3-amino-3-carboxypropyl radical by an uncanonical clevage of S-adenosyl-L-methionine. The relevant histidine of EF2 is His715 in mammals, His699 in yeast and His600 in Pyrococcus horikoshii. Part of diphthamide biosynthesis.
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The expected taxonomic range for this enzyme is: Eukaryota, Archaea, Bacteria
diphthamide biosynthesis protein 2, diphthine synthase, Dph1-Dph2, Dph2, DPH4, PhDph2, S-adenosyl-L-methionine:L-histidine 3-amino-3-carboxypropyltransferase, more
S-adenosyl-L-methionine + L-histidine-[translation elongation factor 2] = S-methyl-5'-thioadenosine + 2-[(3S)-3-amino-3-carboxypropyl]-L-histidine-[translation elongation factor 2]
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