RNA polymerase III subunit B
Last updated 18 Aug 2020
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The POLR3B gene provides instructions for making one part (subunit) of an enzyme called RNA polymerase III. This enzyme is involved in the production (synthesis) of ribonucleic acid (RNA), a chemical cousin of DNA. The RNA polymerase III enzyme attaches (binds) to DNA and synthesizes RNA in accordance with the instructions carried by the DNA, a process called transcription. RNA polymerase III helps synthesize several forms of RNA, including ribosomal RNA (rRNA) and transfer RNA (tRNA). Molecules of rRNA and tRNA assemble protein building blocks (amino acids) into working proteins; this process is essential for the normal functioning and survival of cells.
Normal function
The POLR3B gene provides instructions for making one part (subunit) of an enzyme called RNA polymerase III. This enzyme is involved in the production (synthesis) of ribonucleic acid (RNA), a chemical cousin of DNA. The RNA polymerase III enzyme attaches (binds) to DNA and synthesizes RNA in accordance with the instructions carried by the DNA, a process called transcription. RNA polymerase III helps synthesize several forms of RNA, including ribosomal RNA (rRNA) and transfer RNA (tRNA). Molecules of rRNA and tRNA assemble protein building blocks (amino acids) into working proteins; this process is essential for the normal functioning and survival of cells.
Conditions referring to this gene or chromosome
Other names
C128
DNA-directed RNA polymerase III 127.6 kDa polypeptide
DNA-directed RNA polymerase III subunit B
DNA-directed RNA polymerase III subunit RPC2
DNA-directed RNA polymerase III subunit RPC2 isoform 1
DNA-directed RNA polymerase III subunit RPC2 isoform 2
FLJ10388
HLD8
polymerase (RNA) III (DNA directed) polypeptide B
polymerase (RNA) III subunit B
RNA polymerase III subunit C2
RPC2
RPC2_HUMAN
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Further reading and references
- RNA polymerase III subunit B; MedlinePlus, National Library of Medicine.
- Daoud H, Tetreault M, Gibson W, Guerrero K, Cohen A, Gburek-Augustat J, Synofzik M, Brais B, Stevens CA, Sanchez-Carpintero R, Goizet C, Naidu S, Vanderver A, Bernard G. Mutations in POLR3A and POLR3B are a major cause of hypomyelinating leukodystrophies with or without dental abnormalities and/or hypogonadotropic hypogonadism. J Med Genet. 2013 Mar;50(3):194-7. doi: 10.1136/jmedgenet-2012-101357. Epub 2013 Jan 25.
- Saitsu H, Osaka H, Sasaki M, Takanashi J, Hamada K, Yamashita A, Shibayama H, Shiina M, Kondo Y, Nishiyama K, Tsurusaki Y, Miyake N, Doi H, Ogata K, Inoue K, Matsumoto N. Mutations in POLR3A and POLR3B encoding RNA Polymerase III subunits cause an autosomal-recessive hypomyelinating leukoencephalopathy. Am J Hum Genet. 2011 Nov 11;89(5):644-51. doi: 10.1016/j.ajhg.2011.10.003. Epub 2011 Oct 27.
- Tetreault M, Choquet K, Orcesi S, Tonduti D, Balottin U, Teichmann M, Fribourg S, Schiffmann R, Brais B, Vanderver A, Bernard G. Recessive mutations in POLR3B, encoding the second largest subunit of Pol III, cause a rare hypomyelinating leukodystrophy. Am J Hum Genet. 2011 Nov 11;89(5):652-5. doi: 10.1016/j.ajhg.2011.10.006. Epub 2011 Oct 27.
- Vanderver A, Tonduti D, Bernard G, Lai J, Rossi C, Carosso G, Quezado M, Wong K, Schiffmann R. More than hypomyelination in Pol-III disorder. J Neuropathol Exp Neurol. 2013 Jan;72(1):67-75. doi: 10.1097/NEN.0b013e31827c99d2.
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