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Product Name
NELFB Polyclonal Antibody
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Description
Polyclonal antibody to NELFB
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Tested applications
WB
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Species reactivity
Human, Mouse
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Alternative names
NELFB antibody; COBRA1 antibody; NELF-B antibody; negative elongation factor B antibody
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Isotype
Rabbit IgG
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Preparation
Antigen: Recombinant fusion protein containing a sequence corresponding to amino acids 349-628 of human NELFB (NP_056271.3).
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Clonality
Polyclonal
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Formulation
PBS with 0.02% sodium azide, 50% glycerol, pH7.3.
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Storage instructions
Store at -20℃. Avoid freeze / thaw cycles.
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Applications
WB 1:500 - 1:2000
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Validations
Western blot - NELFB Polyclonal Antibody
Western blot analysis of extracts of various cell lines, using NELFB antibody at 1:3000 dilution.Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) at 1:10000 dilution.Lysates/proteins: 25ug per lane.Blocking buffer: 3% nonfat dry milk in TBST.Detection: ECL Basic Kit .Exposure time: 5s.
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Background
Essential component of the NELF complex, a complex that negatively regulates the elongation of transcription by RNA polymerase II. The NELF complex, which acts via an association with the DSIF complex and causes transcriptional pausing, is counteracted by the P-TEFb kinase complex. May be able to induce chromatin unfolding. Essential for early embryogenesis; plays an important role in maintaining the undifferentiated state of embryonic stem cells (ESCs) by preventing unscheduled expression of developmental genes (By similarity). Plays a key role in establishing the responsiveness of stem cells to developmental cues; facilitates plasticity and cell fate commitment in ESCs by establishing the appropriate expression level of signaling molecules (By similarity). Supports the transcription of genes involved in energy metabolism in cardiomyocytes; facilitates the association of transcription initiation factors with the promoters of the metabolism-related genes (By similarity).; (Microbial infection) The NELF complex is involved in HIV-1 latency possibly involving recruitment of PCF11 to paused RNA polymerase II. In vitro, binds weakly to the HIV-1 TAR RNA which is located in the long terminal repeat (LTR) of HIV-1.
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