Table 1.

Proteins associated with TβRI in transformed cells with a known function in RNA posttranscriptional regulation^a

Symbol	Entrez name	Location	Type(s)	Function annotation
DDX5	DEAD (Asp-Glu-Ala-Asp) box polypeptide 5	Nucleus	Enzyme	rRNA processing
DDX17	DEAD (Asp-Glu-Ala-Asp) box polypeptide 17	Nucleus	Enzyme	RNA modification, unwinding, and processing
DDX21	DEAD (Asp-Glu-Ala-Asp) box polypeptide 21	Nucleus	Enzyme	RNA modification and unwinding
DDX50	DEAD (Asp-Glu-Ala-Asp) box polypeptide 50	Nucleus	Enzyme	RNA modification and unwinding
DHX15	DEAH (Asp-Glu-Ala-His) box polypeptide 15	Nucleus	Enzyme	RNA modification and processing
EIF4A1	Eukaryotic translation initiation factor 4A, isoform 1	Cytoplasm	Translation regulator	mRNA binding, unwinding, and modification
FBL	Fibrillarin	Nucleus	Other	rRNA processing
HNRNPA1	Heterogeneous nuclear ribonucleoprotein A1	Nucleus	Other	RNA modification, processing, and splicing
HNRNPH3	Heterogeneous nuclear ribonucleoprotein H3 (2H9)	Nucleus	Other	RNA modification, processing, and splicing
HNRNPR	Heterogeneous nuclear ribonucleoprotein R	Nucleus	Other	RNA modification and processing
HNRNPL	Heterogeneous nuclear ribonucleoprotein L	Nucleus	Other	RNA modification, processing, and splicing
HNRNPM	Heterogeneous nuclear ribonucleoprotein M	Plasma membrane	Transmembrane receptor	RNA splicing
NPM1	Nucleophosmin (nucleolar phosphoprotein B23, numatrin)	Nucleus	Transcription regulator	rRNA processing
SF3B3	Splicing factor 3b, subunit 3, 130 kDa	Nucleus	Other	RNA modification, processing, and splicing
SYNCRIP	Synaptotagmin binding, cytoplasmic RNA interacting protein	Nucleus	Other	RNA modification, processing, and splicing
WDR43	WD repeat domain 43	Nucleus	Other	rRNA processing

^aProteins associate with TβRI only in MCF10A/HER2 and MDA-MB-231 cells and not in MCF10A cells.