Thermo Fisher Scientific TRA-1-81 Monoclonal Antibody (cl.26)

Applications

Tested Dilution

Publications

Western Blot (WB)

1-5 µg/mL

View 1 publication 1 publication

Immunohistochemistry (IHC)

-

View 1 publication 1 publication

Immunocytochemistry (ICC/IF)

2 µg/mL

View 11 publications 11 publications

Flow Cytometry (Flow)

-

View 2 publications 2 publications

ELISA (ELISA)

Assay-dependent

-

Immunoprecipitation (IP)

2-3 µg/mL

-

Miscellaneous PubMed (Misc)

-

View 1 publication 1 publication

Product Specifications

Species Reactivity

Human

Published species

Human, Mouse

Host/Isotype

Mouse / IgM

Class

Monoclonal

Type

Antibody

Clone

cl.26

Immunogen

2102Ep cl.2A6 human embryonal carcinoma cells

Conjugate

Unconjugated Unconjugated Unconjugated

Form

Liquid

Concentration

0.5 mg/mL

Purification

Protein A

Storage buffer

PBS, pH 7.4

Contains

0.1% sodium azide

Storage conditions

-20°C

Shipping conditions

Wet ice (domestic); Dry ice (international)

RRID

AB_2533495

Product Specific Information

TRA-1-81 recognizes an antigen of similar size detected as by TRA-1-60, GCTM2, K4, and K21, and all these antibodies detect similar but distinct patterns of expression on panels of tumor-derived cell lines. TRA-1-81 and TRA-1-60 epitopes are associated with distinct molecular species. TRA-1-81, TRA-1-60, GCTM2, and K21 antibodies all recognize distinct epitopes formed by modifications of a common keratan sulfate core molecule that is characteristically expressed by human EC cells. TRA-1-81, clone cl.26, likely recognizes the carbohydrate part of the molecule as TRA-1-60 activity is enhanced by neuraminidase.

This antibody is specific for the TRA-1-81 antigen. On western blots, it identifies the target band at ~200-400 kDa. Reactivity has been confirmed with human EC1003.7 and NTERA-2 cell lysates by western blotting, with smooth muscle cells in frozen normal human arterioles and arteries, intestine, lung, skin, and uterus, as well as epithelial cells of the mammary ducts, stomach, small and large intestine tissues by indirect immunofluorescence, and with lysates from 125I surface-labeled 2102Ep cl.2A6 human EC cells by immunoprecipitation.

Target Information

TRA-1-81 is a cell surface antigen expressed along with SSEA-3, SSEA-4 and TRA-1-60 in human embryonic stem cells, embryonal carcinoma cells and induced pluripotent stem cells (iPS). These surface markers are down-regulated during the differentiation process. In contrast, SSEA-1 is absent in undifferentiated human stem cells but is present on the cell surface after retinoic acid mediated differentiation.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.