SRP4835
PCNA human
recombinant, expressed in baculovirus infected Sf9 cells, ≥90% (SDS-PAGE), ≥90% (HPLC)
别名:
Cyclin, MGC8367, PCNA, Proliferating cell nuclear antigen
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关于此项目
NACRES:
NA.32
UNSPSC Code:
12352202
Biological source:
human
Recombinant:
expressed in baculovirus infected Sf9 cells
Assay:
≥90% (HPLC), ≥90% (SDS-PAGE)
Form:
liquid
Mol wt:
~29.8 kDa
Impurities:
endotoxin, tested
biological source
human
recombinant
expressed in baculovirus infected Sf9 cells
assay
≥90% (HPLC), ≥90% (SDS-PAGE)
form
liquid
mol wt
~29.8 kDa
packaging
pkg of 5 μg
impurities
endotoxin, tested
NCBI accession no.
shipped in
dry ice
storage temp.
−70°C
Gene Information
human ... PCNA(5111)
General description
PCNA (proliferating cell nuclear antigen) gene is mapped to human chromosome 20p12.3 and encodes a scaffolding protein. PCNA is a homotrimeric protein known to localize in the nucleus. The PCNA ring has a central cavity that is large enough to allow the dsDNA to slide freely along it.
Biochem/physiol Actions
Proliferating cell nuclear antigen (PCNA) has its main function in DNA replication and repair mechanism. Itsignificantly maintains the longevity of mature neutrophil granulocytes. Upregulation of the PCNA gene is observed in cervical squamous cell carcinoma. PCNA supports cell survival by elevating metabolism flux. This gene expression is known to offer resistance to chemotherapy. Expression of PCNA or cyclin or polymerase delta auxiliary protein is elevated in the nucleus during late G1 phase immediately before the onset of DNA synthesis, becoming maximal during S-phase and declining during G2 and M phases. PCNA/cyclin may act as an auxiliary protein of DNA polymerase-delta to play a fundamental role in the initiation of cell proliferation. Recombinant PCNA was expressed with a 6x His tag in sf9 insect cells and purified by proprietary chromatographic techniques.
Physical form
Sterile filtered; 5 μg/5 μl in 50 mM Tris-Acetate, pH 7.5, 1 mM EDTA, and 20% Glycerol.
Preparation Note
Centrifuge the vial prior to opening. Avoid freeze-thaw cycles.