Recombinant Human Centromere Protein A His

Store at 2-4C for up to 4 weeks or in working aliquots at -20C for longer storage. Avoid repeated freeze-thaw cycles.

Centromere proteins are a group of proteins which form and/or mediate the function of centromeres, the central structures of chromosomes to which spindle fibers/microtubuli attach and pull the chromosomes apart in cell division. Currently, 9 centromere proteins are known and designated CENPA to CENP-I. Most of the centromere proteins are targets of autoantibodies, the anti-centromere antibodies. CENPA is another important centromeric autoantigen in addition to CENPB: it has a molecular weight of approx. 20 kDa and is incorporated into centromeric chromatin due to its histone-like properties. CENPA antibodies are an important marker for correct diagnosis of Scleroderma / CREST syndrome in CENPB-autoantibody negative patients. CENPA Human Recombinant produced in SF9 is a glycosylated, polypeptide chain having a MW = 17, 015 Dalton. CENPA is expressed with a -6x His tag and purified by proprietary chromatographic techniques.