Application
"Western blot analysis of DDX3 (arrow) using rabbit polyclonal DDX3 Antibody (N-term) .293 cell lysates (2 ug/lane) either nontransfected (Lane 1) or transiently transfected with the DDX3 gene (Lane 2) (Origene Technologies)."Application
Formalin-fixed and paraffin-embedded human lung carcinoma tissue reacted with DDX3 antibody (N-term) , which was peroxidase-conjugated to the secondary antibody, followed by DAB staining. This data demonstrates the use of this antibody for immunohistochemistry; clinical relevance has not been evaluated.| Product Name | DDX3 Antibody (N-term) |
|---|---|
| Antibody Type | Primary Antibodies |
| Antigen Alias | DDX3X; DBX; DDX3; ATP-dependent RNA helicase DDX3X; DEAD box protein 3, X-chromosomal; DEAD box, X isoform; Helicase-like protein 2 |
| Clonality | Polyclonal |
|---|---|
| Isotype | Ig |
| Host Species | Rabbit |
| Tested Applications | WBIHC |
| WB:1:50~100 IHC |
|
| Species Reactivity | Human |
| Concentration | 1mg/ml |
| Gene Synonyms | DBX DDX3 |
|---|---|
| Alternative Names | DDX3X DBX DDX3 ATP-dependent RNA helicase DDX3X DEAD box protein 3 X-chromosomal DEAD box X isoform Helicase-like protein 2 |
| Molecular Weight(MW) | 73243 Da |
| Function | Multifunctional ATP-dependent RNA helicase. The ATPase activity can be stimulated by various ribo- and deoxynucleic acids indicative for a relaxed substrate specificity. In vitro can unwind partially double stranded DNA with a preference for 5'- single stranded DNA overhangs. Is involved in several steps of gene expression, such as transcription, mRNA maturation, mRNA export and translation. However, the exact mechanisms are not known and some functions may be specific for a subset of mRNAs Involved in transcriptional regulation. Can enhance transcription from the CDKN1A/WAF1 promoter in a SP1-dependent manner. Found associated with the E-cadherin promoter and can down-regulate transcription from the promoter. Involved in regulation of translation initiation. Proposed to be involved in positive regulation of translation such as of cyclin E1/CCNE1 mRNA and specifically of mRNAs containing complex secondary structures in their 5'UTRs; these functions seem to require RNA helicase activity. Specifically promotes translation of a subset of viral and cellular mRNAs carrying a 5'proximal stem-loop structure in their 5'UTRs and cooperates with the eIF4F complex. Proposed to act prior to 43S ribosomal scanning and to locally destabilize these RNA structures to allow recognition of the mRNA cap or loading onto the 40S subunit. After association with 40S ribosomal subunits seems to be involved in the functional assembly of 80S ribosomes; the function seems to cover translation of mRNAs with structured and non-structured 5'UTRs and is independent of RNA helicase activity. Also proposed to inhibit cap-dependent translation by competetive interaction with EIF4E which can block the EIF4E:EIF4G complex formation. Proposed to be involved in stress response and stress granule assembly; the function is independent of RNA helicase activity and seems to involve association with EIF4E. May be involved in nuclear export of specific mRNAs but not in bulk mRNA export via interactions with XPO1 and NXF1. Also associates with polyadenylated mRNAs independently of NXF1. Associates with spliced mRNAs in an exon junction complex (EJC)-dependent manner and seems not to be directly involved in splicing. May be involved in nuclear mRNA export by association with DDX5 and regulating its nuclear location. Involved in innate immune signaling promoting the production of type I interferon (IFN-alpha and IFN-beta); proposed to act as viral RNA sensor, signaling intermediate and transcriptional coactivator. Involved in TBK1 and IKBKE-dependent IRF3 activation leading to IFN-beta induction. Also found associated with IFN-beta promoters; the function is independent of IRF3. Can bind to viral RNAs and via association with MAVS/IPS1 and DDX58/RIG-I is thought to induce signaling in early stages of infection. Involved in regulation of apoptosis. May be required for activation of the intrinsic but inhibit activation of the extrinsic apoptotic pathway. Acts as an antiapoptotic protein through association with GSK3A/B and BIRC2 in an apoptosis antagonizing signaling complex; activation of death receptors promotes caspase-dependent cleavage of BIRC2 and DDX3X and relieves the inhibition. May be involved in mitotic chromosome segregation. Appears to be a prime target for viral manipulations Hepatitis B virus (HBV) polymerase and possibly vaccinia virus (VACV) protein K7 inhibit IFN-beta induction probably by dissociating DDX3X from TBK1 or IKBKE. Is involved in hepatitis C virus (HCV) replication; the function may involve the association with HCV core protein. HCV core protein inhibits the IPS1- dependent function in viral RNA sensing and may switch the function from a INF-beta inducing to a HCV replication mode Involved in HIV-1 replication. Acts as a cofactor for XPO1- mediated nuclear export of incompletely spliced HIV-1 Rev RNAs |
| Tissue Specificity | This DDX3 antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 82~112 amino acids from the N-terminal region of human DDX3. |
| Cellular Localization | Nucleus speckle. Cytoplasm. Mitochondrion outer membrane. Note=Located predominantly in nuclear speckles and, at low levels, throughout the cytoplasm. Located to the outer side of nuclear pore complexes (NPC). Shuttles between the nucleus and the cytoplasm in a XPO1 and may be also in a NFX1-dependent manner. Associated with polyadenylated mRNAs in the cytoplasm and the nucleus. Predominantly located in nucleus during G(0) phase and in the cytoplasm during G1/S phase |
| Entrez Gene | 1654 |
|---|
Application
"Western blot analysis of DDX3 (arrow) using rabbit polyclonal DDX3 Antibody (N-term) .293 cell lysates (2 ug/lane) either nontransfected (Lane 1) or transiently transfected with the DDX3 gene (Lane 2) (Origene Technologies)."
Application
Formalin-fixed and paraffin-embedded human lung carcinoma tissue reacted with DDX3 antibody (N-term) , which was peroxidase-conjugated to the secondary antibody, followed by DAB staining. This data demonstrates the use of this antibody for immunohistochemistry; clinical relevance has not been evaluated.| Application Notes | WB:1:50~100 IHC |
|---|
| Form | Liquid |
|---|---|
| Storage Instructions | For short-term storage, store at 4° C. For long-term storage, aliquot and store at -20ºC or below. Avoid multiple freeze-thaw cycles. |
| Storage Buffer | Purified polyclonal antibody supplied in PBS with 0.09% (W/V) sodium azide. This antibody is prepared by Saturated Ammonium Sulfate (SAS) precipitation followed by dialysis against PBS. |
