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Primary Antibodies  >  Transcription Factor Antibodies

TAF1 Antibody

Rabbit Polyclonal


100 µg


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Immunohistochemistry of rabbit anti-TAF1 antibody.  
Tissue:  prostate.  
Fixation:  formalin fixed paraffin embedded.  
Antigen retrieval:  not required.
Primary antibody:  Anti-TAF1 at 10 µg/mL  for 1 h at RT.
Secondary antibody:  Peroxidase rabbit secondary antibody at 1:10,000 for 45 min at RT.
Staining: TAF-1 as precipitated red signal with hematoxylin purple nuclear counterstain.
Western blot using Rockland's affinity purified anti-TAF1 to detect TAF1 in HeLa nuclear extract (arrowhead). The membrane was probed with the primary antibody at  dilutions of 1:100 (lane 1), 1:250 (lane 2), 1: 500 (Lane 3 and 1:1,000 (Lane 4). The identity of the bands at ~95 kDa is unknown, but may be degraded TAF1.  Personal Communication, Anne Gegonne, CCR-NCI, Bethesda, MD.
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$20.00 to United States
Synonyms: Transcription Initiation Factor TFIID Subunit 1, TAF1

TAF1 Antibody Properties

Anti-Transcription Initiation Factor TFIID Subunit 1 (TAF1) (RABBIT) Antibody - 600-401-995
Target Species
Known Cross Reactivity
human, mouse, rat
ELISA : 1:10,000 - 1:50,000
ChIP : Yes
Western Blot : 1:100 - 1:2,000
Immunohistochemistry: 10µg/ml
ImmunoPrecipitation: Yes
Other Dilution: User Optimized
Physical State
Liquid (sterile filtered)
Shipping condition
Dry Ice
1.15 mg/mL by UV absorbance at 280 nm
0.02 M Potassium Phosphate, 0.15 M Sodium Chloride, pH 7.2
0.01% (w/v) Sodium Azide
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TAF1 Antibody Description

Anti-TAF1 antibody is designed, produced, and validated as part of a collaboration between Rockland and the National Cancer Institute (NCI) and is suitable for Cancer, Immunology and Nuclear Signaling research. Transcription Initiation Factor TFIID Subunit 1 (TAF1) is the largest component and core scaffold of the TFIID basal transcription factor complex, which also includes TATA-binding protein (TBP) and a variety of TBP-associated factors.  TFIID nucleates the formation of transcription pre-initiation complexes and plays a key role in the regulation of gene expression by RNA polymerase II.  TAF1 possesses DNA-binding activity and also contains novel N- and C-terminal Ser/Thr kinase domains which can auto-phosphorylate or trans-phosphorylate other transcription factors. For example, TAF1 interacts with the C-terminus of TP53 and phosphorylates the T55 residue, leading to MDM2-mediated degradation of TP53.  TAF1 also catalyzes Ser phosphorylation of general transcription factor IIA (GTF2A1) and IIF (GTF2F1).  The retinoblastoma tumor suppressor protein, RB1, interacts with the N-terminal domain of TAF1 and inhibits its intrinsic kinase activity.  TAF1 is essential for progression through the G1 phase of the cell cycle and has been reported to be indispensable for expression of 18% of mammalian genes.
This affinity purified antibody was prepared from whole rabbit serum produced by repeated immunizations with a synthetic peptide corresponding to amino acids near the carboxyl terminus of human TAF1.
Immunogen Type
Storage Condition
Store vial at -20° C prior to opening. Aliquot contents and freeze at -20° C or below for extended storage. Avoid cycles of freezing and thawing. Centrifuge product if not completely clear after standing at room temperature. This product is stable for several weeks at 4° C as an undiluted liquid. Dilute only prior to immediate use.
Application Note
This affinity purified antibody has been tested for use in ELISA, Immunohistochemistry, and western blotting. Specific conditions for reactivity should be optimized by the end user.  Expect a band approximately 213 kDa in size corresponding to TAF1 protein by western blotting in the appropriate cell lysate or extract.
This affinity purified antibody is directed against human TAF1 protein. The product was affinity purified from monospecific antiserum by immunoaffinity chromatography.  A BLAST analysis was used to suggest cross-reactivity with TAF1 protein from human, mouse and rat based on 100% homology with the immunizing sequence.  Reactivity against homologues from other sources is not known.
Disclaimer Note-General
This product is for research use only and is not intended for therapeutic or diagnostic applications. Please contact a technical service representative for more information. All products of animal origin manufactured by Rockland Immunochemicals are derived from starting materials of North American origin. Collection was performed in United States Department of Agriculture (USDA) inspected facilities and all materials have been inspected and certified to be free of disease and suitable for exportation. All properties listed are typical characteristics and are not specifications. All suggestions and data are offered in good faith but without guarantee as conditions and methods of use of our products are beyond our control. All claims must be made within 30 days following the date of delivery. The prospective user must determine the suitability of our materials before adopting them on a commercial scale. Suggested uses of our products are not recommendations to use our products in violation of any patent or as a license under any patent of Rockland Immunochemicals, Inc. If you require a commercial license to use this material and do not have one, then return this material, unopened to: Rockland Inc., P.O. BOX 5199, Limerick, Pennsylvania, USA.
General Reference
Ruppert, S., Wang, E.H. and Tjian, R. (1993) Cloning and expression of human TAFII250: a TBP-associated factor  implicated in cell-cycle regulation. Nature 362 (6416), 175-179. Hisatake, K., Hasegawa, S., Takada, R., Nakatani, Y., Horikoshi, M. and Roeder, R.G. (1993) The p250 subunit of native TATA box-binding factor TFIID is the cell-cycle regulatory protein CCG1.  Nature 362 (6416), 179-181. O'Brien, T. and Tjian, R. (1998) Functional analysis of the human TAFII250 N-terminal kinase domain. Mol. Cell 1 (6), 905-911.
Specific Reference
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Product Type
Primary Antibodies;
ELISA, WB, GS, Other
Reacts With
human, mouse, rat
Catalog Number

Product Type
Primary Antibodies;
Reacts With
human, mouse, rat
Catalog Number

Product Type
Primary Antibodies;
Reacts With
Catalog Number

Product Type
Primary Antibodies;
Reacts With
Catalog Number

Product Label


Conjugation Reference
Molecular Weight
Excitation Wavelength
Conjugation Chemistry