Scl-70 (Scleroderma, DNA Topoisomerase I)

Topoisomerase I changes the topology of DNA via cleavage of single strand only. Suitable for use in DNA conformational analysis and topology as well as DNA repair, drug resistance, cell proliferation and leukemia studies. The double-helical configuration that DNA strands naturally reside in makes them difficult to separate, and yet they must be separated if enzymes are to transcribe the sequences that encode proteins, or if chromosomes are to be replicated. In so-called circular DNA, in which double helical segment is bent around and joined in a circle, the two strands are topologically linked, or knotted. They cannot be separated by any process that does not involve the breaking of strands. Topoisomerases catalyze and guide the unknotting of DNA.\n\nApplications: \nSuitable for use in ELISA. Other applications not tested.\n\nRecommended Dilution: \nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nLyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Reconstituted product is stable for 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

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SPECIFICATIONS

Catalog Number

S0500

Size

2ml

Applications

ELISA

Reactivities

Hum

Form

Supplied as a lyophilized powder in PBS, 0.02% sodium azide. Reconstitute with 2ml ddH2O.

P Type

Pab

Purity

Purified by double immunodiffusion against rabbit thymus extract.

Isotype

IgG

Additional Info

Undiluted antibody shows a strong Scl-70 precipitin band. Specificity is verified by a precipitin line of identity with the CDC-AF reference serum. This product shows no reactivity at a dilution of 1:100 when tested against purified Sm/RNP, SS-A, SS-B, Sm or Jo-1 antigens in an ELISA system designed to detect all IgG subclasses. Exhibits strong positive in an Anti-Scl-70 ELISA system.