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aminodeoxychorismate synthase, component I, bacterial clade Members of this family, aminodeoxychorismate synthase, component I (PabB), were designated para-aminobenzoate synthase component I until it was recognized that PabC, a lyase, completes the pathway of PABA synthesis. This family is closely related to anthranilate synthase component I (trpE), and both act on chorismate. The clade of PabB enzymes represented by this model includes sequences from Gram-positive and alpha and gamma Proteobacteria as well as Chlorobium, Nostoc, Fusobacterium and Arabidopsis. A closely related clade of fungal PabB enzymes is identified by TIGR01823, while another bacterial clade of potential PabB enzymes is more closely related to TrpE (TIGR01824). [Biosynthesis of cofactors, prosthetic groups, and carriers, Folic acid]
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Jiyao W et al.(2023). "The conserved domain database in 2023.",