Detection Method:Sandwich
Test principle:This assay employs a two-site sandwich ELISA to quantitate PARP1 in samples. An antibody specific for PARP1 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anyPARP1 present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for PARP1 is added to the wells. After washing, Streptavidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of PARP1 bound in the initial step. The color development is stopped and the intensity of the color is measured.
Product Overview:PARP is a protein involved in a number of cellular processes involving mainly DNA repair and programmed cell death.RP, a 116 kDa nuclear poly (ADP-ribose) polymerase, appears to be involved in DNA repair in response to environmental stress . This protein can be cleaved by many ICE-like caspases in vitroand is one of the main cleavage targets of caspase-3 in vivo . In human PARP, the cleavage occurs between Asp214 and Gly215, which separates the PARP amino-terminal DNA binding domain (24 kDa) from the carboxy-terminal catalytic domain (89 kDa) .
PARP1 is a chromatin-associated enzyme, poly-ADP ribose polymerase-1, which modifies various nuclear proteins by poly(ADP-ribosyl)ation. PARP1 has a role in repair of single-stranded DNA (ssDNA) breaks.
