Orotidine 5'-phosphate decarboxylase; Catalyzes the decarboxylation of orotidine 5'-monophosphate (OMP) to uridine 5'-monophosphate (UMP); Belongs to the OMP decarboxylase family. Type 1 subfamily.

Uridylate kinase; Catalyzes the reversible phosphorylation of UMP to UDP, with ATP or dATP as the most efficient phosphate donors. Is also able to phosphorylate 5-fluoro-UMP and 6-aza-UMP.

Ribose 5-phosphate epimerase; Evidence 1a: Function experimentally demonstrated in the studied strain; Product type e: enzyme.

Transcriptional attenuator and uracil phosphoribosyltransferase activity; Regulates transcriptional attenuation of the pyrimidine nucleotide (pyr) operon by binding in a uridine-dependent manner to specific sites on pyr mRNA. This disrupts an antiterminator hairpin in the RNA and favors formation of a downstream transcription terminator, leading to a reduced expression of downstream genes; Belongs to the purine/pyrimidine phosphoribosyltransferase family. PyrR subfamily.

Serine hydroxymethyltransferase; Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism (By similarity); Belongs to the SHMT family.

Pyrimidine-nucleoside phosphorylase; Catalyzes phosphorolysis of the pyrimidine nucleosides uridine, thymidine and 2'-deoxyuridine with the formation of the corresponding pyrimidine base and ribose-1-phosphate.

Exported 2',3'-cyclic-nucleotide 2'-phosphodiesterase, 2' (or 3') nucleotidase and 5' nucleotidase; Catalyzes the release of inorganic phosphate from 2',3'- cyclic nucleotides through consecutive 2',3'-phosphodiesterase and 3'- (or 2') nucleotidase activities. Also possesses a 5'-nucleotidase activity. Does not catalyze the release of inorganic phosphate from 3',5'-cyclic nucleotides. Probably plays a role in the cellular reprocessing of nucleotides present in the medium, under conditions of phosphate shortage.

Septum formation DNA-binding protein; Nucleoside triphosphate pyrophosphatase that hydrolyzes dTTP and UTP. Can also hydrolyze CTP and the modified nucleotides pseudo- UTP, 5-methyl-CTP (m(5)CTP) and 5-methyl-UTP (m(5)UTP). May have a dual role in cell division arrest and in preventing the incorporation of modified nucleotides into cellular nucleic acids.

Uracil permease; Transport of uracil in the cell; Belongs to the xanthine/uracil permease family. Nucleobase:cation symporter-2 (NCS2) (TC 2.A.40) subfamily.