PUF60, FIR, ROBPI, SIAHBP1, Poly(U)-binding-splicing factor PUF60, 60kD poly(U)-binding-splicing factor, FUSE-binding protein-interacting repressor, Ro-binding protein 1, Siah-binding protein 1

The protein encoded by this gene is a Ro RNP-binding protein. It interacts with Ro RNPs and their interaction is thought to represent a gain of function for Ro RNPs. This protein also forms a ternary complex with far upstream element (FUSE) and FUSE-binding protein. It can repress a c-myc reporter via the FUSE. It is also known to target transcription factor IIH and inhibit activated transcription. This gene is implicated in the xeroderma pigmentosum disorder. There are two alternatively spliced transcript variants of this gene encoding different isoforms. There seems to be evidence of multiple polyadenylation sites for this gene.