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ATP phosphoribosyltransferase (EC 18.104.22.168) is the enzyme that catalyzes the
first step in the biosynthesis of histidine in bacteria, fungi and plants. It
is a protein of about 23 to 32 Kd. As a signature pattern we selected a region
located in the C-terminal part of this enzyme.
April 2006 / Pattern revised.
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