Protein
Pre-mRNA-splicing ATP-dependent RNA helicase prp28
Organism
Neosartorya fischeri (strain ATCC 1020 / DSM 3700 / CBS 544.65 / FGSC A1164 / JCM 1740 / NRRL 181 / WB 181)
Function
ATP-dependent RNA helicase involved in mRNA splicing. May destabilize the U1/5'-splice site duplex to permit an effective competition for the 5'-splice site by the U6 snRNA, resulting in the switch between U1 and U6 at the 5'-splice site. May also act to unwind the U4/U6 base-pairing interaction in the U4/U6/U5 snRNP, facilitating the first covalent step of splicing (By similarity).
Similarity
Belongs to the DEAD box helicase family. DDX23/PRP28 subfamily.
Sequence
MDGIISNGSPGASVTRPLPEPLEKPPTPPPPPPEDSAAPPPPPDTSVPPPPPEDAPPAPPPEKKKKVGWGAKRPAATPLSVEELVRKKREADAAAAKPKFLSKAERERIALEKRAKEVEAGRRFKSEPSTNGTDRSGTQSPSVYSETPNGDERSIPTGPRAMRNSEVPTGPAAMRNKNYDMSPPPPPKPMSFSLTDGKGDSKRQAEEDEAAAQAALIKQKYMGTEKTSSFSAKKKRKRTTDRKFNFEWNAEEDTSGDYNPLYQQRHEANFYGRGRLAGFGDDVADTLAQKYARALEDRDREAGSIRAREILEMERRRREESTRNQLDKHWSEKKLEHMRERDWRIFKEDFNISTKGGSVPNPMRSWEESGLPKRLLELVDQVGYKEPTPIQRAAIPIALQSRDLIGVAVTGSGKTASFLLPLLVYISELPRIDEFEWRKNDGPYAIVLAPTRELAQQIEIEARKFTQPLGFNVVSIVGGHSFEEQAYSLRNGAEIIIATPGRLVDCIERRLLVLSQCCYVIMDEADRMIDLGFEEPVNKILDALPVTNEKPDTEEAENSAAMRSHRYRQTMMYTATMPSAVERIARKYLRRPAIVTIGSAGEAVDTVEQRVEMIAGEDKRKKRLADILSSGEFRPPIIVFVNIKRNCDAIAREIKQMGFSSVTLHGSKTQEQREAALASVRNGSTDVLVATDLAGRGIDVPDVSLVVNFNMANSIESYTHRIGRTGRAGKSGVAITFLGNEDADVMYDLKQMLMKSPISRVPEELRKHEAAQSKPNRGFAKKSDDSSGFGNKSGWQ