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Information on EC 2.5.1.108 - 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.

The expected taxonomic range for this enzyme is: Eukaryota, Archaea, Bacteria

Synonyms
dph1-dph2, phdph2, more

REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
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]
show the reaction diagram
PATHWAY SOURCE
PATHWAYS
MetaCyc
diphthamide biosynthesis I (archaea), diphthamide biosynthesis II (eukaryotes)
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