PFAM: protein kinase; protein phosphatase 2C domain protein; SMART: tyrosine protein kinase; serine/threonine protein kinase; KEGG: hch:HCH_05817 serine/threonine protein kinase.

23S rRNA m(2)A-2503 methyltransferase; Specifically methylates position 2 of adenine 2503 in 23S rRNA and position 2 of adenine 37 in tRNAs. m2A2503 modification seems to play a crucial role in the proofreading step occurring at the peptidyl transferase center and thus would serve to optimize ribosomal fidelity; Belongs to the radical SAM superfamily. RlmN family.

DNA ligase (NAD(+)); DNA ligase that catalyzes the formation of phosphodiester linkages between 5'-phosphoryl and 3'-hydroxyl groups in double- stranded DNA using NAD as a coenzyme and as the energy source for the reaction. It is essential for DNA replication and repair of damaged DNA.

SSU ribosomal protein S10P; Involved in the binding of tRNA to the ribosomes. Belongs to the universal ribosomal protein uS10 family.

23S rRNA Um-2552 2'-O-methyltransferase; Specifically methylates the uridine in position 2552 of 23S rRNA at the 2'-O position of the ribose in the fully assembled 50S ribosomal subunit.

tRNA pseudouridine synthase B; Responsible for synthesis of pseudouridine from uracil-55 in the psi GC loop of transfer RNAs; Belongs to the pseudouridine synthase TruB family. Type 1 subfamily.

LSU ribosomal protein L24P; One of two assembly initiator proteins, it binds directly to the 5'-end of the 23S rRNA, where it nucleates assembly of the 50S subunit.

TIGRFAM: phenylalanyl-tRNA synthetase, beta subunit; KEGG: sde:Sde_1582 phenylalanine--tRNA ligase.

LSU ribosomal protein L13P; This protein is one of the early assembly proteins of the 50S ribosomal subunit, although it is not seen to bind rRNA by itself. It is important during the early stages of 50S assembly.