Pricing and availability is not currently available.

Quality Level

biological source

human female bone (Source Disease: Osteosarcoma)

OMIM accession no.

storage temp.


Gene Information

human ... alpha tubulin 1B(10376)

General description

This product was derived from ATCC Cat. No. HTB-96.
U2OS RFP-TUBA1B are osteosarcoma, epithelial cells, from a human caucasian female (aged 15 years), with a RFP-tagged modification.


This product is a human U2OS cell line in which the genomic TUBA1B gene has been endogenously tagged with a Red Fluorescent Protein (RFP) gene using CompoZr® Zinc Finger Nuclease technology. Integration resulted in endogenous expression of the fusion protein in which RFP is attached to the N-terminus of tubulin. Fluorescence imaging shows that the tubulin can polymerize to form the characteristic pattern of microtubules. This stable cell line was expanded from a single clone. The target′s gene regulation and corresponding protein function are preserved in contrast to cell lines with overexpression via an exogenous promoter.
To learn more, please visit the Cellular Reporter Cell Line webpage

Features and Benefits

The U2OS cells are adherent, with a doubling time of approx. 29 hours.
RFP-tagged on chromosome 12q13.12




Tested for Mycoplasma, sterility, post-freeze viability, short terminal repeat (STR) analysis for cell line identification, PCR assay for cell line species confirmation.

Preparation Note

Media Renewal changes two to three times per week.

Rapidly thaw vial by gentle agitation in 37°C water bath (~2 minutes), keeping vial cap out of the water. Decontaminate with 70% ethanol, add 9 mL culture media and centrifuge 125 x g (5-7 minutes). Resuspend in complete culture media and incubate at 37°C in a 5% CO2 atmosphere.

Subculture Ratio: approx. 1:3-1:6

The base medium for this cell line is McCoy′s 5A1 Medium Modified, Cat. No. M9309. To make the complete growth medium, add the following components to the base medium: fetal bovine serum, Cat. No. F4135, to a final concentration of 10%.

The cell freezing medium is DMSO 1X (Cat. No. C6164).

Legal Information

CompoZr is a registered trademark of Sigma-Aldrich Co. LLC

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin

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