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  • KD/KO Validated

KRAS Polyclonal antibody

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

Host / Isotype

Rabbit / IgG


human, mouse, rat





Cat no : 12063-1-AP


C K RAS, c Ki ras, GTPase KRas, K Ras 2, K RAS2A, K RAS2B, K RAS4A, K RAS4B, KI RAS, KRAS, KRAS1, KRAS2, KRAS2B speicifc, Krasa, Krasb, NS3, RASK2

Tested Applications

Positive WB detected inHEK-293 cells, A549 cells, mouse kidney tissue, human brain tissue, human kidney tissue, rat kidney tissue, rat liver tissue
Positive IP detected inHeLa cells
Positive IHC detected inhuman lung cancer tissue, human pancreas cancer 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 inHeLa cells
Positive FC detected inHeLa cells

Recommended dilution

Western Blot (WB)WB : 1:2000-1:10000
Immunoprecipitation (IP)IP : 0.5-4.0 ug for IP and 1:500-1:2000 for WB
Immunohistochemistry (IHC)IHC : 1:400-1:1600
Immunofluorescence (IF)IF : 1:50-1:500
Sample-dependent, check data in validation data gallery

Product Information

12063-1-AP targets KRAS in WB, IP, IHC, IF, FC, CoIP applications and shows reactivity with human, mouse, rat samples.

Tested Reactivity human, mouse, rat
Cited Reactivity human, mouse, rat
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen KRAS fusion protein Ag2700
Full Name v-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog
Calculated molecular weight 188 aa, 21 kDa
Observed molecular weight 21 kDa
GenBank accession numberBC013572
Gene symbol KRAS
Gene ID (NCBI) 3845
Conjugate Unconjugated
Form Liquid
Purification Method Antigen 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.

Background Information

KRAS, also called p21, is a member of the Ras superfamily of proteins. It is located on human chromosome 12, and contains four coding exons and a 5' non-coding exon (PMID: 12778136). KRAS is a membrane-anchored guanosine triphosphate/guanosine diphosphate (GTP/GDP)-binding protein and is widely expressed in most human cells. Like other members of the Ras family, the KRAS protein is a GTPase, and it is involved in intracellular signal transduction and mainly responsible for EGFR-signaling activation (PMID: 19117687). KRAS mutations have been found in various malignancies, including lung adenocarcinoma, mucinous adenoma, ductal carcinoma of the pancreas and colorectal carcinoma. KRAS has two isoforms, a and b. This KRAS antibody (12063-1-AP) has weaker cross reaction to HRAS and NRAS.


Product Specific Protocols
WB protocol for KRAS antibody 12063-1-APDownload protocol
IHC protocol for KRAS antibody 12063-1-APDownload protocol
IF protocol for KRAS antibody 12063-1-APDownload protocol
IP protocol for KRAS antibody 12063-1-APDownload protocol
FC protocol for KRAS antibody 12063-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



Cell Chem Biol

HTiP: High-Throughput Immunomodulator Phenotypic Screening Platform to Reveal IAP Antagonists as Anti-cancer Immune Enhancers.

Authors - Xiulei Mo

Cell Death Differ

MEK nuclear localization promotes YAP stability via sequestering β-TrCP in KRAS mutant cancer cells.

Authors - Huanji Xu

Front Pharmacol

PMID: 30967777

Authors - ZiSheng Chen

Nat Commun

Lung cancer deficient in the tumor suppressor GATA4 is sensitive to TGFBR1 inhibition.

Authors - Lei Gao

Food Chem Toxicol

Final-2 targeted glycolysis mediated apoptosis and autophagy in human lung adenocarcinoma cells but failed to inhibit xenograft in nude mice.

Authors - Zisheng Chen

Cancer Cell Int

UBN2 promotes tumor progression via the Ras/MAPK pathway and predicts poor prognosis in colorectal cancer.

Authors - Ya-Li Zhao


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


Usman Shah (Verified Customer) (11-29-2021)

Enables specific detection of KRAS in WBs.

  • Applications: Western Blot

Kishor (Verified Customer) (12-13-2018)

I am very much satisfied with this antibody. I got good results for cells and rat liver tissue protein.

  • Applications: Western Blot,
  • Primary Antibody Dilution: 1:1000
  • Cell Tissue Type: H69, HUCCT-1, and Rat Liver tissues

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

Antibody is much better than comparable antibodies. Because of weak expression an very low differences between K-Ras/H-Ras/N-Ras it's quite difficult to detect only K-Ras in a specific way. That is also the problem of this antibody. Please look at my attached blot. 1. Fermentas prestained marker2. PANC-1 whole cell lysate3. PANC-1/EGFP-K-Ras4. HEK293/EGFP-K-Ras5. HEK293/EGFP-H-Ras6.HEK293/EGFP-N-Ras7. 20 ng recombinant K-Ras (His-tagged)Unfortunately, K-Ras (12063-1-AP) recognizes also H-Ras and in less amounts N-Ras. Looking at endogenous K-Ras detection, you have to keep in mind, that the upper band is K-Ras and the lower one H-Ras. Because of the fact, that N-Ras is only recognized in very low amounts (probably almost not on endogenous level) this antibody is great detecting endogenous K-Ras in whole cell lysates with some little problems

  • Applications: Western Blot, Immunofluorescence, Immunoprecipitation,
  • Primary Antibody Dilution: 1:1000
  • Cell Tissue Type: pancreatic cancer cells (PANC-1) and HEK293 overexpressing EGFP-tagged K-Ras, H-Ras and N-Ras
KRAS Antibody Western Blot,Immunofluorescence,Immunoprecipitation, validation (1:1000 dilution) in pancreatic cancer cells (PANC-1) and HEK293 overexpressing EGFP-tagged K-Ras, H-Ras and N-Ras (Cat no:12063-1-AP)