background:
HCC1 is a member of the U2AF65 family of proteins. The encoded protein is found in the nucleus, where it co-localizes with core spliceosomal proteins. It has been shown to play a role in both steroid hormone receptor-mediated transcription and alternative splicing, and it is also a transcriptional coregulator of the viral oncoprotein v-Rel. Multiple transcript variants have been observed for this gene. A related pseudogene has been identified on chromosome X. [provided by RefSeq, Aug 2011].
Function:
Transcriptional coactivator for steroid nuclear receptors ESR1/ER-alpha and ESR2/ER-beta, and JUN/AP-1 (By similarity). May be involved in pre-mRNA splicing process.
Subunit:
Interacts with NCOA6 (By similarity). Interacts with RSRC1 (via Arg/Ser-rich domain).
Subcellular Location:
Nucleus speckle. Note=Concentrated in nuclear speckles. Colocalizes with the core spliceosomal snRNP proteins.
Tissue Specificity:
Widely expressed. Highly expressed in pancreas, skeletal muscle, lung and brain. Expressed at intermediate level in kidney, liver and heart.
Similarity:
Belongs to the splicing factor SR family.
Contains 3 RRM (RNA recognition motif) domains.
Database links:
UniProtKB/Swiss-Prot: Q14498.2
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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