Gene: arginase VIIR

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arginase

locus: aga

locus_name: arginase

organism_type: B

chromosome_number: VII

chromosome_side: R

link_group: VIIR

cultural_requirements: VIIR. Between wc-1 (2%) and arg-10 (24 to 27%) (240, 697). Presumed structural gene for arginase (240, 697) (see Fig. 10). Unable to form ornithine from arginine; arginine is thus unable to satisfy the proline requirement of pro-3 in a pro-3 aga double mutant. Prototrophic single mutants develop polyamine requirement in the presence of arginine. This is due to feedback inhibition of ornithine biosynthesis by arginine, combined with a catabolic block in ornithine formation from arginine (240). Siderophore production is severely reduced in the absence of ornithine in the triple mutant aga arg-5 ota, which has been used to study iron transport (1146, 1147) and to obtain mutants defective in siderophore uptake (G.W. Charlang and N.P. Williams, personal communication); see sit.

enzyme_id: 66

Enzyme: arginase

anid_name: agaA

near_l: wc-1 (2%)

near_r: arg-10 (24 to 27%)

neu_name:

supplement:

image_url:

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