v5.1.0.3
Glycine data from LIS
Type | Family |
Description | Members of this group are eukaryotic bifunctional enzymes with glutamine amidotransferase ( ) and cyclase activities ( ) that catalyse the fifth and sixth steps of the histidine biosynthetic pathway. In eubacteria, these steps are catalysed by a complex formed by two subunits, namely the glutamine amidotransferase HisH ( ) and the cyclase HisF which are encoded in the same operon [ ].The catalytic activity has been assessed for many members, mainly by complementation assays. The Saccharomyces cerevisiae (Baker's yeast) member is able to suppress His auxotrophy of corresponding Escherichia coli hisH and hisF mutants [ ]. In plants, hisHF cDNA from Emericella nidulans (Aspergillus nidulans) and Arabidopsis thaliana (Mouse-ear cress) complemented a S. cerevisiae his7Deltastrain [ , ]. In addition, A. nidulans cDNA complemented E. coli hisHand hisFmutant strains [ ]. |
Short Name | IGPS_HisHF |