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Human CD66e protein (active)

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

Cat No. GTX00181-pro


Functional Assay


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