Hypothetical protein; Product name confidence: Class 4 (Homologs of previously reported genes of unknown function, or no similarity to any previously reported sequences).

Conserved hypothetical protein; Product name confidence: Class 4 (Homologs of previously reported genes of unknown function, or no similarity to any previously reported sequences).

Probable transporter; Product name confidence: Class 3 (Function proposed based on presence of conserved amino acid motif, structural feature or limited sequence similarity to an experimentally studied gene).

Xanthine phosphoribosyltransferase; Converts the preformed base xanthine, a product of nucleic acid breakdown, to xanthosine 5'-monophosphate (XMP), so it can be reused for RNA or DNA synthesis.

Probable transporter (membrane subunit); Involved in the import of serine and threonine into the cell, with the concomitant import of sodium (symport system). Belongs to the dicarboxylate/amino acid:cation symporter (DAACS) (TC 2.A.23) family.

succinyl-CoA synthetase beta chain; Succinyl-CoA synthetase functions in the citric acid cycle (TCA), coupling the hydrolysis of succinyl-CoA to the synthesis of either ATP or GTP and thus represents the only step of substrate-level phosphorylation in the TCA. The beta subunit provides nucleotide specificity of the enzyme and binds the substrate succinate, while the binding sites for coenzyme A and phosphate are found in the alpha subunit. Can also generate UTP or CTP, although it preferentially synthesizes ATP and/or GTP.

succinyl-CoA synthetase alpha chain; Succinyl-CoA synthetase functions in the citric acid cycle (TCA), coupling the hydrolysis of succinyl-CoA to the synthesis of either ATP or GTP and thus represents the only step of substrate-level phosphorylation in the TCA. The alpha subunit of the enzyme binds the substrates coenzyme A and phosphate, while succinate binding and nucleotide specificity is provided by the beta subunit. Can also generate UTP or CTP, although it preferentially synthesizes ATP and/or GTP.

Branched-chain amino acid transport protein BraD; Component of the high affinity leucine, isoleucine, valine, transport system (LIV-I), which is operative without Na(+) and is specific for alanine and threonine, in addition to branched-chain amino acids; Belongs to the binding-protein-dependent transport system permease family. LivHM subfamily.

Hcp1; Required for assembly of the protein secretion apparatus HSI- I. Actively secreted during chronic infection of cystic fibrosis patients; Belongs to the hcp1 family.