A phosphoprotein adapter involved in the XPO1-mediated U snRNA export from the nucleus. Bridge components required for U snRNA export, the cap binding complex (CBC) bound snRNA on the one hand and the GTPase Ran in its active GTP-bound form together with the export receptor XPO1 on the other. Its phosphorylation in the nucleus is required for U snRNA export complex assembly and export, while its dephosphorylation in the cytoplasm causes export complex disassembly. It is recycled back to the nucleus via the importin alpha/beta heterodimeric import receptor. The directionality of nuclear export is thought to be conferred by an asymmetric distribution of the GTP-and GDP-bound forms of Ran between the cytoplasm and nucleus. Its compartmentalized phosphorylation cycle may also contribute to the directionality of export. Binds strongly to m7G-capped U1 and U5 small nuclear RNAs (snRNAs) in a sequence-unspecific manner and phosphorylation-independent manner (By similarity). Plays also a role in the biogenesis of U3 small nucleolar RNA (snoRNA). Involved in the U3 snoRNA transport from nucleoplasm to Cajal bodies. Binds strongly to m7G-capped U3, U8 and U13 precursor snoRNAs and weakly to trimethylated (TMG) capped U3, U8 and U13 snoRNAs. Binds also to telomerase RNA.
Target
Phosphorylated Adapter RNA Export Protein (PHAX)
Clonality
Polyclonal
Reactivity
Human
Tested Applications
ELISA, WB, IHC
Host
Rabbit
Recommended dilutions
WB: 1/1000, IHC-P: 1/10 - 1/50. Not tested in IHC-F. Optimal dilutions/concentrations should be determined by the end user.
Conjugation
Unconjugated
Immunogen
KLH-conjugated synthetic peptide between 297-326 amino acids from the C-terminal region of human PHAX.
Isotype
IgG
Form
Liquid
Purification
Purified through a protein A column, followed by peptide affinity purification.
Storage
Aliquot and store at 2-8°C for up to 2 weeks, or at -20°C for long term storage. Avoid repeated freeze/thaw cycles.
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