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ATF4 Polyclonal antibody

ATF4 Polyclonal Antibody for FC, IF, IHC, IP, WB, ELISA

Host / Isotype

Rabbit / IgG


human, rat, mouse and More (3)





Cat no : 10835-1-AP


ATF4, CREB 2, CREB2, DNA binding protein TAXREB67, TAXREB67, TXREB

Tested Applications

Positive WB detected inA431 cells, HEK-293 cells, rat brain tissue
Positive IP detected inHEK-293 cells
Positive IHC detected inhuman breast cancer tissue, mouse colon tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
Positive IF detected inTunicamycin treated HeLa cells, HepG2 cells, HeLa cells
Positive FC detected inHepG2 cells

Recommended dilution

Western Blot (WB)WB : 1:500-1:1000
Immunoprecipitation (IP)IP : 0.5-4.0 ug for 1.0-3.0 mg of total protein lysate
Immunohistochemistry (IHC)IHC : 1:50-1:500
Immunofluorescence (IF)IF : 1:200-1:800
Flow Cytometry (FC)FC : 0.20 ug per 10^6 cells in a 100 µl suspension
It is recommended that this reagent should be titrated in each testing system to obtain optimal results.
Sample-dependent, Check data in validation data gallery.

Product Information

10835-1-AP targets ATF4 in WB,IP,IHC,IF,FC,ELISA applications and shows reactivity with human, rat, mouse samples.

Tested Reactivity human, rat, mouse
Cited Reactivityhuman, rat, zebrafish, hamster, pig
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen ATF4 fusion protein Ag1279
Full Name activating transcription factor 4 (tax-responsive enhancer element B67)
Calculated Molecular Weight 39 kDa
Observed Molecular Weight45-50 kDa
GenBank Accession NumberBC022088
Gene Symbol ATF4
Gene ID (NCBI) 468
Conjugate Unconjugated
Form Liquid
Purification MethodAntigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

What is the molecular weight of ATF4?

The molecular weight of ATF is 38.6 kD.


What is ATF4?

Activating transcription factor 4 (ATF4), also known as cAMP-response element-binding protein 2 (CREB2), is a substrate of RSK2 and a basic leucine-zipper transcription factor (PMIDs: 16000305, 17485283).


What the function of ATF4?

ATF4 its a transcription factor that controls the transcriptional activity of mature osteoblasts. ATF4 is particularly critical for their timely onset and terminal differentiation, as well as expression of Bsp and osteocalcin. Knockout animals displayed reduction or delay in bone mineralization and have severely reduced bone volume. ATF4 is also part of the PERK-eIF2α-ATF4-CHOP apoptosis pathway, which is activated by ER stress, and it likely plays a role related to tumor cell survival (PMIDs: 18083928, 16000305, 30134550).


What is the effect of ATF4 interaction with RSK2?

ATF4 and RSK2 posttranscriptionally regulate type I collagen synthesis. Lack of RSK2 phosphorylation of AFT4 may contribute to skeletal phenotypes associated with Coffin-Lowry Syndrome (PMID: 17485283).


Where is ATF4 expressed?

ATF4 protein is predominantly expressed in osteoblasts, although its corresponding Atf4 mRNA is ubiquitously expressed (PMID: 16000305).


What regulates ATF4 expression?

ATF4 is regulated by a ubiquitin/proteasomal pathway, which is less active in osteoblasts by inhibition with MG115 (PMID: 16000305).


How does ATF4 expression affect Ocn mRNA?

Inhibition of the degradation pathway leads to ATF4 accumulation and induces Ocn mRNA expression in non-osteoblastic cells (PMID: 16000305).


Does ATF4 have the ability to induce osteoblast-specific gene expression even in non-osteoblastic cells?

Yes, ATF4, as well as other osteoblast differentiation factors, has this ability. AFT4 interactions with Runx2 can stimulate osteoblast-specific osteocalcin gene expression. (PMIDs: 16000305, 17485283)


Product Specific Protocols
WB protocol for ATF4 antibody 10835-1-APDownload protocol
IHC protocol for ATF4 antibody 10835-1-APDownload protocol
IF protocol for ATF4 antibody 10835-1-APDownload protocol
IP protocol for ATF4 antibody 10835-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols




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The reviews below have been submitted by verified Proteintech customers who received an incentive forproviding their feedback.


Xu-Qiao (Verified Customer) (10-24-2023)

Although there is a band at 50 kd, many other non-specific bands.

  • Applications: Western Blot
  • Primary Antibody Dilution: 1:1000
  • Cell Tissue Type: mouse brain lysate
ATF4 Antibody Western Blot validation (1:1000 dilution) in mouse brain lysate (Cat no:10835-1-AP)

Lucile (Verified Customer) (08-01-2023)

The ATF4 antibody worked well for immunoprecipitation, western blotting (1:1000 but based on initial results could dilute further) and gave a very bright IF signal on fixed smooth muscle cells.

  • Applications: Western Blot, Immunofluorescence, Immunoprecipitation
  • Primary Antibody Dilution: 1:1000

SU (Verified Customer) (03-22-2022)

  • Applications: Western Blot
  • Cell Tissue Type: H9C2
ATF4 Antibody Western Blot validation ( dilution) in H9C2 (Cat no:10835-1-AP)

Natalie (Verified Customer) (12-11-2018)

Antibody worked well, although does detect some non-specific bands which appear to be dimers from the molecular weight.

  • Applications: Western Blot,
  • Primary Antibody Dilution: 1:750
  • Cell Tissue Type: Rat DRG & Sciatic nerve