Protein
Pre-mRNA-splicing factor ISY1
Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Function
Involved in pre-mRNA splicing and cell cycle control. As a component of the NTC complex (or PRP19-associated complex), associates to the spliceosome to mediate conformational rearrangement or to stabilize the structure of the spliceosome after U4 snRNA dissociation, which leads to spliceosome maturation. The cell cycle arrest of SYF2 defective cells may be due to the inefficient splicing of TUB1. Also involved in DNA repair.
Similarity
Belongs to the ISY1 family.
Sequence
MSRNVDKANSVLVRFQEQQAESAGGYKDYSRYQRPRNVSKVKSIKEANEWKRQVSKEIKQKSTRIYDPSLNEMQIAELNDELNNLFKEWKRWQWHIDHTLMEKKTKRKRLEDSHVLMNSGKLINGKRYFGRALELPEVKEWLKQSQRQNDGGSINTKCIPKDRNDFYYHGKVTAALTEFEANWTSILKAHYNVPVNEDEEEMSRQTQEIHVPTLADMEHWLVQRRKKKLMDELNL