ATF4 Polyclonal antibody

ATF4 Polyclonal Antibody for IHC, WB, ELISA

Host / Isotype

Rabbit / IgG


Human and More (2)





Cat no : 28657-1-AP


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

Tested Applications

Positive WB detected inA431 cells, HeLa cells
Positive IHC detected inhuman breast cancer tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0

Recommended dilution

Western Blot (WB)WB : 1:1000-1:4000
Immunohistochemistry (IHC)IHC : 1:50-1:500
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.

Published Applications

WBSee 5 publications below

Product Information

28657-1-AP targets ATF4 in WB, IHC, ELISA applications and shows reactivity with Human samples.

Tested Reactivity Human
Cited Reactivityhuman, mouse
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen ATF4 fusion protein Ag29844
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

ATF4 is a transcription factor, that accumulates predominantly in osteoblasts, where it regulates terminal osteoblast differentiation and bone formation[PMID: 19016586]. As a basic leucine-zipper (bZip) transcription factor, ATF4 can regulate amino acid metabolism, cellular redox state, and anti-stress responses. It also regulates age-related and diet-induced obesity and glucose homeostasis in mammals, and has conserved metabolic functions in flies[PMID: 19726872]. Due to its location at chromosome 22q13, a region linked to schizophrenia, ATF4 is considered as a positional candidate gene for schizophrenia[PMID: 18163433]. Otherwise, since ATF4 is induced by tumour microenvironmental factors, and regulates processes relevant to cancer progression, it might serve as a potential therapeutic target in cancer. Endogenous ATF4 protein has a molecular mass of 50kd. [PMID: 17726049]. ATF4 can bind DNA as a homodimer and as a heterodimer. ATF4 is ubiquitinated by SCF(BTRC) in response to mTORC1 signal, followed by proteasomal degradation and leading to down-regulate expression of SIRT4, so the molecular weight of ATF4 may be 70 kDa.


Product Specific Protocols
WB protocol for ATF4 antibody 28657-1-APDownload protocol
IHC protocol for ATF4 antibody 28657-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols




Epg5 deficiency leads to primary ovarian insufficiency due to WT1 accumulation in mouse granulosa cells.

Authors - Wenwen Liu

J Hazard Mater

Endoplasmic reticulum stress manipulates autophagic response that antagonizes polybrominated diphenyl ethers quinone induced cytotoxicity in microglial BV2 cells.

Authors - Qiushuang Zhu


CCAAT/Enhancer-Binding Protein Homologous Protein (CHOP) Deficiency Attenuates Heatstroke-Induced Intestinal Injury

Authors - Yan Cao

Mol Neurobiol

Deficiency of RAB39B Activates ER Stress-Induced Pro-apoptotic Pathway and Causes Mitochondrial Dysfunction and Oxidative Stress in Dopaminergic Neurons by Impairing Autophagy and Upregulating α-Synuclein

Authors - Ching-Chi Chiu


Sculponeatin A promotes the ETS1-SYVN1 interaction to induce SLC7A11/xCT-dependent ferroptosis in breast cancer

Authors - Peng Peng