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Human CD66e protein (active)

Human CD66e protein (active). GTX00181-pro
Human CD66e protein (active). GTX00181-pro

Cat No. GTX00181-pro

Application Functional Assay
Species Human
10 μg ($249)

Application Note

Carcinoembryonic antigen (CEA) which are characterized as members of the CD66 cluster of differentiation have highly related glycoproteins involved in cell adhesion. It also can be used as a tumor marker in clinical tests. CEA are glycosyl phosphatidyl inositol (GPI) cell-surface-anchored glycoproteins whose specialized sialofucosylated glycoforms serve as functional colon carcinoma L-selectin and E-selectin ligands. Besides, Galectin 4 (GAL4) has been identified as an interactor of CEA, thus a binding ELISA assay was conducted to detect the interaction of recombinant human CEA and recombinant human GLA4. Briefly, CEA were diluted serially in PBS, with 0.01% BSA (pH 7.4). Duplicate samples of 100 μl were then transferred to GLA4-coated microtiter wells and incubated for 2h at 37ºC. Wells were washed with PBST and incubated for 1h with anti-CEA pAb, then aspirated and washed 3 times. After incubation with HRP labelled secondary antibody, wells were aspirated and washed 3 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37ºC. Finally, add 50 μl stop solution to the wells and read at 450nm immediately. The binding activity of CEA and GLA4 was in a dose dependent manner.

Observed MW

16/25 kDa.


Lyophilized powder


Lyophilized from 20 mM Tris (pH 8.0) with 150 mM NaCl, 1 mM EDTA, 1 mM DTT, 0.01% SKL, 5% Trehalose, Proclin300. Reconstitute with 20 mM Tris and 150 mM NaCl (pH 8.0) to a concentration of 0.1-1.0 mg/mL. Do not vortex.


For short-term storage (1-2 weeks), store at 4ºC. For long-term storage, store at -20ºC or below. After reconstitution, keep as concentrated solution.Avoid freeze-thaw cycles.


N-terminal His-Tag; Ala566~Gly698 (NP_001278413.1)

Expression System

E. coli


> 97%


< 1 EU/μg




For laboratory use only. Not for any clinical, therapeutic, or diagnostic use in humans or animals. Not for animal or human consumption.


carcinoembryonic antigen related cell adhesion molecule 5,CD66e,CEA


This gene encodes a cell surface glycoprotein that represents the founding member of the carcinoembryonic antigen (CEA) family of proteins. The encoded protein is used as a clinical biomarker for gastrointestinal cancers and may promote tumor development through its role as a cell adhesion molecule. Additionally, the encoded protein may regulate differentiation, apoptosis, and cell polarity. This gene is present in a CEA family gene cluster on chromosome 19. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2015]


Research Area

Human CD66e protein (active). GTX00181-pro

GTX00181-pro Functional Assay Image

Functional ELISA analysis of GTX00181-pro Human CD66e protein (active) which can bind immobilized GLA4 protein.

Human CD66e protein (active). GTX00181-pro

GTX00181-pro Image

SDS-PAGE analysis of GTX00181-pro Human CD66e protein (active).

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Package List Price ($)
$ 249