THOC3

TEX1 is part of the TREX (transcription/export) complex, which includes THO2 (MIM 300395), HPR1 (MIM 606930), ALY (MIM 604171), and UAP56 (MIM 606390).[supplied by OMIM

THO complex 3

Required for efficient export of polyadenylated RNA and spliced mRNA. Acts as component of the THO subcomplex of the TREX complex which is thought to couple mRNA transcription, processing and nuclear export, and which specifically associates with spliced mRNA and not with unspliced pre-mRNA. TREX is recruited to spliced mRNAs by a transcription-independent mechanism, binds to mRNA upstream of the exon-junction complex (EJC) and is recruited in a splicing- and cap-dependent manner to a region near the 5' end of the mRNA where it functions in mRNA export to the cytoplasm via the TAP/NFX1 pathway. The TREX complex is essential for the export of Kaposi's sarcoma-associated herpesvirus (KSHV) intronless mRNAs and infectious virus production.

Biological Process mRNA export from nucleusSource:UniProtKB1 Publication
Biological Process mRNA processingSource:UniProtKB-KW
Biological Process RNA splicingSource:UniProtKB-KW
Biological Process viral mRNA export from host cell nucleusSource:UniProtKB1 Publication

Nucleus
Nucleus speckle