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PRO1 | Glutamate 5-kinase; Gamma-glutamyl kinase; catalyzes the first step in proline biosynthesis; required for nitrogen starvation-induced ribophagy but not for nonselective autophagy; PRO1 has a paralog, YHR033W, that arose from the whole genome duplication; Belongs to the glutamate 5-kinase family. (428 aa) | ||||
PRO3 | Delta 1-pyrroline-5-carboxylate reductase; catalyzes the last step in proline biosynthesis. (286 aa) | ||||
ARG5,6 | Acetylglutamate kinase and N-acetyl-gamma-glutamyl-phosphate reductase; N-acetyl-L-glutamate kinase (NAGK) catalyzes the 2nd and N-acetyl-gamma-glutamyl-phosphate reductase (NAGSA), the 3rd step in arginine biosynthesis; synthesized as a precursor which is processed in the mitochondrion to yield mature NAGK and NAGSA; enzymes form a metabolon complex with Arg2p; NAGK C-terminal domain stabilizes the enzymes, slows catalysis and is involved in feed-back inhibition by arginine. (863 aa) | ||||
ARG4 | Argininosuccinate lyase; catalyzes the final step in the arginine biosynthesis pathway; Belongs to the lyase 1 family. Argininosuccinate lyase subfamily. (463 aa) | ||||
YHR033W | Uncharacterized protein YHR033W; Putative protein of unknown function; epitope-tagged protein localizes to the cytoplasm; YHR033W has a paralog, PRO1, that arose from the whole genome duplication. (423 aa) | ||||
PUT2 | Delta-1-pyrroline-5-carboxylate dehydrogenase; nuclear-encoded mitochondrial protein involved in utilization of proline as sole nitrogen source; deficiency of human homolog ALDH4A1 causes type II hyperprolinemia (HPII), an autosomal recessive inborn error of metabolism; human homolog ALDH4A1 can complement yeast null mutant. (575 aa) | ||||
ARG2 | Amino-acid acetyltransferase, mitochondrial; Acetylglutamate synthase (glutamate N-acetyltransferase); mitochondrial enzyme that catalyzes the first step in the biosynthesis of the arginine precursor ornithine; forms a complex with Arg5,6p. (574 aa) | ||||
ARG3 | Ornithine carbamoyltransferase; also known as carbamoylphosphate:L-ornithine carbamoyltransferase; catalyzes the biosynthesis of the arginine precursor citrulline. (338 aa) | ||||
URA2 | Glutamine-dependent carbamoyl-phosphate synthase; Bifunctional carbamoylphosphate synthetase/aspartate transcarbamylase; catalyzes the first two enzymatic steps in the de novo biosynthesis of pyrimidines; both activities are subject to feedback inhibition by UTP; In the central section; belongs to the metallo-dependent hydrolases superfamily. DHOase family. CAD subfamily. (2214 aa) | ||||
CPA2 | Carbamoyl-phosphate synthase arginine-specific large chain; Large subunit of carbamoyl phosphate synthetase; carbamoyl phosphate synthetase catalyzes a step in the synthesis of citrulline, an arginine precursor. (1118 aa) | ||||
PUT3 | Proline utilization trans-activator; Transcriptional activator; binds specific gene recruitment sequences and is required for DNA zip code-mediated targeting of genes to nuclear periphery; regulates proline utilization genes, constitutively binds PUT1 and PUT2 promoters as a dimer, undergoes conformational change to form active state; binds other promoters only under activating conditions; differentially phosphorylated in presence of different nitrogen sources; has a Zn(2)-Cys(6) binuclear cluster domain. (979 aa) | ||||
PUT1 | Proline oxidase; nuclear-encoded mitochondrial protein involved in utilization of proline as sole nitrogen source; PUT1 transcription is induced by Put3p in the presence of proline and the absence of a preferred nitrogen source. (476 aa) | ||||
CAR2 | L-ornithine transaminase (OTAse); catalyzes the second step of arginine degradation, expression is dually-regulated by allophanate induction and a specific arginine induction process; not nitrogen catabolite repression sensitive; protein abundance increases in response to DNA replication stress; human homolog OAT complements yeast null mutant. (424 aa) | ||||
ARG7 | Mitochondrial ornithine acetyltransferase; catalyzes the fifth step in arginine biosynthesis; also possesses acetylglutamate synthase activity, regenerates acetylglutamate while forming ornithine; Belongs to the ArgJ family. (441 aa) | ||||
ARG1 | Argininosuccinate synthase; Arginosuccinate synthetase; catalyzes the formation of L-argininosuccinate from citrulline and L-aspartate in the arginine biosynthesis pathway; potential Cdc28p substrate. (420 aa) | ||||
ARG8 | Acetylornithine aminotransferase, mitochondrial; Acetylornithine aminotransferase; catalyzes the fourth step in the biosynthesis of the arginine precursor ornithine; Belongs to the class-III pyridoxal-phosphate-dependent aminotransferase family. (423 aa) | ||||
ORT1 | Ornithine transporter of the mitochondrial inner membrane; exports ornithine from mitochondria as part of arginine biosynthesis; functionally complemented by human ortholog, SLC25A15, which is associated with hyperammonaemia-hyperornithinaemia-homocitrullinuria (HHH) syndrome, but HHH-associated variants fail to complement. (292 aa) | ||||
CPA1 | Carbamoyl-phosphate synthase arginine-specific small chain; Small subunit of carbamoyl phosphate synthetase; carbamoyl phosphate synthetase catalyzes a step in the synthesis of citrulline, an arginine precursor; translationally regulated by an attenuator peptide encoded by YOR302W within the CPA1 mRNA 5'-leader; Belongs to the CarA family. (411 aa) | ||||
PRO2 | Gamma-glutamyl phosphate reductase; catalyzes the second step in proline biosynthesis. (456 aa) | ||||
CAR1 | Arginase, catabolizes arginine to ornithine and urea; expression responds to both induction by arginine and nitrogen catabolite repression; disruption decreases production of carcinogen ethyl carbamate during wine fermentation and also enhances freeze tolerance. (333 aa) |