Leishmania donovani is a protozoa parasite responsible for human visceral leishmaniasis. During their life cycle the parasites exist in 2 forms: as flagellated promastigote within the sandfly vector and as non-flagellated amastigote in the macrophage phagolysosomal compartment of the mammalian host. A2 protein is an amastigote-specific virulence factor that is required for Leishmania donovani parasite survival in a mammalian host.
The anti-A2 antibody recognizes only the amastigote form of the A2 protein. The anti-A2 antibody recognizes the sequence QSVGPLSVGP from the parasite, Leishmania donovani.
Lyophilized protein G purified in PBS pH7.4
Recommend starting dilution:
If reconstituted with deionized water in 100 µL: WB 1:100. Optimal dilution has to be determined by the user.
Lyophilized antibodies can be kept at 4ºC for up to 3 months and should be kept at -20ºC for long-term storage (2 years). To avoid freeze-thaw cycles, reconstituted antibodies should be aliquoted before freezing for long-term (1 year) storage (-80ºC) or kept at 4ºC for short-term usage (2 months). For maximum recovery of product, centrifuge the original vial prior to removing the cap. Further dilutions can be made with the assay buffer. After the maximum long-term storage period (2 years lyophilized or 1 year reconstituted) antibodies should be tested in your assay with a standard sample to verify if you have noticed any decrease in their efficacy.