Recombinant Human Cytidine Deaminase

Synonyms    Cytidine deaminase, Cytidine aminohydrolase, CDA, CDD. 

Introduction    Cytidine deaminase (CDA) is an enzyme that scavenges exogenous and endogenous cytidine and 2'-deoxycytidine for UMP synthesis. CDA is one of several deaminases responsible for maintaining the cellular pyrimidine pool. CDA also catalyzes the deamination of chemotherapeutic cytosine nucleoside analogs such as Ara-C and 5-azacytidine, which results in the loss of their cytotoxic and antitumor function. CDA can form homotetramers and is generally expressed in granulocytes. Mutations in the CDA gene are linked to decreased sensitivity to the cytosine nucleoside analogue cytosine arabinoside used in the treatment of certain childhood leukemias. 

Recombinant Human Cytidine DeaminaseDescription    CDA Human Recombinant fused with a 20 amino acid His tag at N-terminus produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 166 amino acids (1-146 a.a.) and having a molecular mass of 18.3kDa. The CDA is purified by proprietary chromatographic techniques. 

Source    Escherichia Coli. 

Physical Appearance    Sterile Filtered colorless solution. 

Formulation    The CDA solution (0.5 mg/ml) contains 20 mM Tris-HCl Buffer (pH 8.0), 1 mM DTT,

2mM EDTA, 100 mM NaCl and 40% Glycerol. 

Recombinant Human Cytidine DeaminaseStability    CDA should be stored desiccated below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).

Please prevent freeze-thaw cycles. 

Purity    Greater than 90.0% as determined by SDS-PAGE. 

Amino acid sequence MGSSHHHHHH SSGLVPRGSH MAQKRPACTL KPECVQQLLV CSQEAKQSAY CPYSHFPVGA ALLTQEGRIF KGCNIENACY PLGICAERTA IQKAVSEGYK DFRAIAIASD MQDDFISPCG ACRQVMREFG TNWPVYMTKP DGTYIVMTVQ ELLPSSFGPE DLQKTQ.