AT-HF (ARABIDOPSIS THALIANA HISF PROTEIN). Identical to Imidazole glycerol phosphate synthase hisHF, chloroplast precursor [Arabidopsis Thaliana] (GB:Q9SZ30;GB:O80330); similar to unnamed protein product [Vitis vinifera] (GB:CAO38924.1); similar to predicted protein [Physcomitrella patens subsp. patens] (GB:EDQ74695.1); similar to hypothetical protein OsI_010537 [Oryza sativa (indica cultivar-group)] (GB:EAY89304.1); contains InterPro domain Glutamine amidotransferase superfamily; (InterPro:IPR011702); contains InterPro domain Glutamine amidotransferase, class I, active site (InterPro:IPR012998); contains InterPro domain Histidine biosynthes