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- *************************************************************
- * Eukaryotic RNA polymerases 30 to 40 Kd subunits signature *
- *************************************************************
-
- In eukaryotes, there are three different forms of DNA-dependent RNA
- polymerases (EC 2.7.7.6). Each class of RNA polymerase is assembled from ten
- to twelve different polypeptides.
-
- It has recently been shown [1,2] that small subunits of about 30 to 40 Kd
- found in all three types of polymerases are highly conserved. Subunits known
- to belong to this family are:
-
- - Yeast RPC5 subunit (or RPC40) from RNA polymerases I and III.
- - Yeast RPB3 subunit from RNA polymerase II.
- - Mammalian RPB33 (gene POLR2C) from RNA polymerase II.
- - Conjugation stage-specific protein cnjC from Tetrahymena thermophila [3],
- which may be a stage-specific RNA polymerase subunit.
-
- As a signature pattern for these subunits, we selected a highly conserved
- region in their N-terminal part.
-
- -Consensus pattern: D-E-[LIVMFY](2)-A-H-R-[LIVM]-G-[LIVM](2)-P-L
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: June 1994 / Text revised.
-
- [ 1] Kolodziej P., Young R.A.
- Mol. Cell. Biol. 9:5387-5394(1989).
- [ 2] Pati U.K., Weissman S.M.
- J. Biol. Chem. 265:8400-8403(1990).
- [ 3] Martindale D.W.
- Nucleic Acids Res. 18:2953-2960(1990).
-