Scl-70 (Human DNA Topoisomerase I)
Origin:
Recombinant
Cat. No.:
41630
Tag:
N-terminal 6xHis
Size:
0.1 mg
Source:
Spodoptera frugiperda Sf9
Purity:
>90%
Other Names:
TOP1, Scl 70, Scl-70
Species:
Human
INTRODUCTION
Type I topoisomerase, also called as TOP1 and Scl-70, is an enzyme responsible for cutting one of the two strands of double-stranded DNA, which interconverts supercoiled DNA to the necessary topological conformations for standard DNA replication and transcription. Scl-70 is a target antigen for anti-Scl-70 autoantibody, which is a specific marker in scleroderma patients (specificity 98-100%) and are related with the existence of diffuse skin involvement and pulmonary fibrosis.
IMMUNOLOGICAL FUNCTION
As an autoantigen, Scl-70 binds with IgG-type human auto-antibodies.
AMINO ACID SEQUENCE
MSYYHHHHHHDYDIPTTENLYFQGASGDHLHNDSQIEADFRLNDSHKHKDKHKDREHRHKEHKKEKDREKSKHSNSEHKDSEKKHKEKEKTKHKDGSSEKHKDKHKDRDKEKRKEEKVRASGDAKIKKEKENGFSSPPQIKDEPEDDGYFVPPKEDIKPLKRPRDEDDADYKPKKIKTEDTKKEKKRKLEEEEDGKLKKPKNKDKDKKVPEPDNKKKKPKKEEEQKWKWWEEERYPEGIKWKFLEHKGPVFAPPYEPLPENVKFYYDGKVMKLSPKAEEVATFFAKMLDHEYTTKEIFRKNFFKDWRKEMTNEEKNIITNLSKCDFTQMSQYFKAQTEARKQMSKEEKLKIKEENEKLLKEYGFCIMDNHKERIANFKIEPPGLFRGRGNHPKMGMLKRRIMPEDIIINCSKDAKVPSPPPGHKWKEVRHDNKVTWLVSWTENIQGSIKYIMLNPSSRIKGEKDWQKYETARRLKKCVDKIRNQYREDWKSKEMKVRQRAVALYFIDKLALRAGNEKEEGETADTVGCCSLRVEHINLHPELDGQEYVVEFDFLGKDSIRYYNKVPVEKRVFKNLQLFMENKQPEDDLFDRLNTGILNKHLQDLMEGLTAKVFRTYNASITLQQQLKELTAPDENIPAKILSYNRANRAVAILCNHQRAPPKTFEKSMMNLQTKIDAKKEQLADARRDLKSAKADAKVMKDAKTKKVVESKKKAVQRLEEQLMKLEVQATDREENKQIALGTSKLNYLDPRITVAWCKKWGVPIEKIYNKTQREKFAWAIDMADEDYEF
APPLICATIONS
Standard ELISA test, line/dot assay and microarray assay with positive/negative sera panels.
FORMULATION
Liquid in storage buffer (50mM Tris, 300-500mM NaCl, 10% Glycerol, Protease inhibitor, pH8.0).
DESCRIPTION
Expressed in insect Sf9 cells with a total of 789 AA.
Mw: 93.7 KDa (calculated).
N-terminal 6xHis-tag and TEV cleavage site, 25 extra AA (highlighted).
Recombinant antigen for research use or manufacturing only.
STORAGE
Store at –80°C. Avoid repeated freezing /thawing cycles.
QUALITY CONTROL TEST
BCA to determine quantity of the protein.
SDS PAGE to determine purity of the protein.