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BL21(λDE3) ΔserC ΔycdX Chemically Competent Cells for In Vivo Incorporation of Phosphothreonine I Amid Biosciences | Protein Phosphorylation | Protein Expression | Phosphothreonine

Amid Biosciences| Competent Cells and Protein Expression Vectors

BL21(λDE3) ΔserC ΔycdX Chemically Competent Cells for In Vivo Incorporation of Phosphothreonine

$ 2,600.00

The BL21(λDE3) ΔserC ΔycdX is an engineered strain for efficient co-translational incorporation of phosphothreonine (pThr) into recombinant proteins by an Escherichia coli. In this strain, deletion of serC gene which is responsible for the intracellular levels of phosphoserine along with deletion of a putative phosphatase, ycdX, enables homogeneous pThr incorporation at different sites  in different proteins (Zhang et al.,2017).

BL21(λDE3)ΔserC ΔycdX chemically competent cells are supplied as a pack of 10 convenient 100 μl/tube aliquots.  The transformation efficiency is ≥ 1x106 cfu/μg pBR322 plasmid DNA.

E. coli genotype: fhuA2 [lon] ompT gal (λ DE3) [dcm] ∆hsdS ΔserC ΔycdX

[λ DE3 = λ sBamHIo ∆EcoRI-B int::(lacI::PlacUV5::T7 gene1) i21 ∆nin5]

Catalog # BLPCY-201

Storage: - 80°C. 

Shipping:  Product requires shipping on dry ice. Please contact for shipment estimates. 

Usage: This product is intended for LABORATORY RESEARCH USE ONLY. Not for diagnostic or therapeutic use.

Important Note: This product is subject to a Material Transfer Agreement (MTA), Amid Biosciences will generate the agreements and email them to you or your institution’s MTA coordinator. The cells are available only for academic institutions in the US for research use only. 

Purchase of BL21(λDE3) ΔserC ΔycdX cells includes research use limited license for use only at site of purchase. This license prohibits the purchaser from selling, assigning or transferring this product to any third party without the express written consent of Amid Biosciences, LLC. Please review this license at our Legal Communique Section before purchasing this product.

In the absence of a license from Amid Biosciences, purchase of the Products does not grant any rights whatsoever to use the Products, either directly or indirectly, for any Commercial Purpose. Commercial Purpose means any and all uses of the Products and derivatives thereof by a party for monetary or other consideration and may include but is not limited to use (1) to manufacture a product; (2) to provide a service, information or data; (3) to develop, claim, patent or license another composition, kit or method; and/or (4) to transfer or re-sell the Products or their derivatives.

A license from Amid Biosciences is required by any person at a for-profit organization and by any person at a not-for-profit organization who wishes to use the Products for any Commercial Purpose or who wishes to transfer the Products, components of Products, or derivatives of the Products, or to provide services, information, or data derived thereby or therefrom for any Commercial Purpose.

Product Description and Manual

Safety Data Sheet_EU


Zhang MS,et al. Biosynthesis and genetic encoding of phosphothreonine through parallel selection and deep sequencing. Nat Methods. 2017 Jul;14(7):729-736. doi: 10.1038/nmeth.4302. Epub 2017 May 29.

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