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HPA010978 Sigma-Aldrich

Anti-CDCP1 antibody produced in rabbit

Antibody Enhanced Validation

Prestige Antibodies® Powered by Atlas Antibodies, affinity isolated antibody, buffered aqueous glycerol solution

Synonym: Anti-CD318 antigen, Anti-CUB domain-containing protein 1 precursor, Anti-Membrane glycoprotein gp140, Anti-SIMA135, Anti-Subtractive immunization M plus HEp3-associated 135 kDa protein, Anti-Transmembrane and associated with src kinases



Related Categories Alphabetical Index, Antibodies, CD-CL, CD0-CDC, Prestige Antibodies,
species reactivity   human
application(s)   immunohistochemistry: 1:20- 1:50
clone   polyclonal
antibody form   affinity isolated antibody
form   buffered aqueous glycerol solution
grade   Prestige Antibodies® Powered by Atlas Antibodies
shipped in   wet ice
storage temp.   −20°C
Gene Information   human ... CDCP1(64866)
biological source   rabbit
antibody product type   primary antibodies
enhanced validation   orthogonal RNAseq
Learn more about Antibody Enhanced Validation
conjugate   unconjugated
UniProt accession no.   Q9H5V8



CUB domain-containing protein 1 precursor recombinant protein epitope signature tag (PrEST)

General description

CUB-domain-containing protein 1 (CDCP1) is a type I transmembrane protein which functions as a substrate for Src kinases. It has a molecular weight of 140kDa, and has a proteolytically cleaved form of molecular weight 85kDa. It has an intracellular region made of five tyrosines, and a large extracellular region containing the CUB (C1r/C1s, Uegf, Bmp1) domain. Both the isoforms of CDCP1 are expressed in varying ratios in epithelial cells. This gene is localized to human chromosome 3p21.31. CDCP1 protein is composed of 836 amino acids, with a signal peptide of 29 amino acids, and the cytoplasmic domain consists of 150 amino acids.

Physical form

Solution in phosphate-buffered saline, pH 7.2, containing 40% glycerol and 0.02% sodium azide


All Prestige Antibodies Powered by Atlas Antibodies are developed and validated by the Human Protein Atlas (HPA) project (www.proteinatlas.org)and as a result, are supported by the most extensive characterization in the industry.

The Human Protein Atlas project can be subdivided into three efforts: Human Tissue Atlas, Cancer Atlas, and Human Cell Atlas. The antibodies that have been generated in support of the Tissue and Cancer Atlas projects have been tested by immunohistochemistry against hundreds of normal and disease tissues and through the recent efforts of the Human Cell Atlas project, many have been characterized by immunofluorescence to map the human proteome not only at the tissue level but now at the subcellular level. These images and the collection of this vast data set can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. To view these protocols and other useful information about Prestige Antibodies and the HPA, visit sigma.com/prestige.

Legal Information

Prestige Antibodies is a registered trademark of Sigma-Aldrich Co. LLC


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.


Corresponding Antigen APREST72141.

Biochem/physiol Actions

CUB domain-containing protein 1 (CDCP1) is phosphorylated by Src kinases and mediates resistance to anoikis, promotes degradation of extracellular matrix, tumor invasion and metastasis. It is a cancer associated gene and is up-regulated in multiple cancers such as, lung, pancreas and kidney. Its overexpression in these cancers is related to poor prognosis. CDCP1 inhibits integrin-mediated cell adhesion by acting as a substrate of Src-kinases. It also facilitates the metastasis of melanoma, and is associated with poor prognosis of renal cell carcinoma. CDCP1 aids bone morphogenetic protein 4 (BMP4) in initiating epithelial-mesenchymal transition, and suppresses the epithelial phenotype of pancreatic cancer cells. It confers anoikis resistance to lung cancer cells, by participating in protein kinase Cδ (PKCδ) signaling.

Safety & Documentation

Safety Information

Personal Protective Equipment  Eyeshields, Gloves, half-mask respirator (US), multi-purpose combination respirator cartridge (US)
RIDADR  NONH for all modes of transport
WGK Germany  1
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


Prestige Antibody® Immunofluorescence Procedure

Prestige Antibodies® have been used for subcellular localization studies by immunocytochemistry (ICC) - immunofluorescence (IF) using the protocol described below. In addition to the primary antibodi...
Keywords: Immunocytochemistry, Immunofluorescence, Immunostaining, Sample preparations

Prestige Antibody® Immunohistochemistry Procedure

Prestige Antibodies® developed for immunohistochemistry based expression profiling are recommended to be used according to the standard IHC staining protocol described below.
Keywords: Buffers, Dehydration reaction, Gene expression, Hydration reaction, Immunohistochemistry, Immunostaining, Tissue microarrays

Prestige Antibody® Protein Immunoblotting Procedure

Prestige Antibodies® recommended for Western Blot are recommended to be used according to the standard WB protocol described below. Western blot standard protocol optimized for
Keywords: Catalytic combustion detector, Electrophoresis, Gene expression, Sample preparations, Western blot

Prestige Antigens™-Blocking Protocol

Prestige Antigens and the corresponding Prestige Antibodies are recommended to be used according to the standard blocking protocol described below.
Keywords: Immunocytochemistry, Immunohistochemistry, Immunostaining, Titrations, Western blot

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