SpecificityHuman; mouse; rat. Endomorphin-1 is highly conserved molecule so cross-reactivity with other species is expected. Cross-reactivity with other opioid peptides is as follows: with Endomorphin-2 = 70%; Met-enkephalin <0.03%; with Leu-enkephalin 0.01%; with beta-endorphin<0.1%.
Species ReactivityHuman, Mouse, Rat
Immunogen DescriptionAntibodies to human Endomorphins 1 and 2 were made by immunising rabbits with the human Endomorphin-1 peptide (YPWF) and then selecting those antibodies that cross-reacted with both human Endomorphins 1 and 2.
Application DetailsA dilution of 5-10 µg/mL is recommended for immunohistochemistry using formalin fixed and paraffin embedded tissues and for 4% paraformaldehyde fixed frozen tissues. A dilution of 5-15 µg/mL is recommended for immunofluorescence. Biosensis recommends optimal dilutions/concentrations should be determined by the end user.
TargetEndomorphin-1 and Endomorphin-2 (E-1/E-2)
SpecificityHuman; mouse; rat. Endomorphin-1 is highly conserved molecule so cross-reactivity with other species is expected. Cross-reactivity with other opioid peptides is as follows: with Endomorphin-2 = 70%; Met-enkephalin <0.03%; with Leu-enkephalin 0.01%; with beta-endorphin<0.1%.
Target Host SpeciesHuman
Species ReactivityHuman, Mouse, Rat
Antibody HostRabbit
Antibody TypePolyclonal
Antibody IsotypeIgG
ConjugateUnconjugated
Immunogen DescriptionAntibodies to human Endomorphins 1 and 2 were made by immunising rabbits with the human Endomorphin-1 peptide (YPWF) and then selecting those antibodies that cross-reacted with both human Endomorphins 1 and 2.
Purity DescriptionAffinity purified
FormatLyophilized with BSA
Reconstitution InstructionsSpin vial briefly before opening. Reconstitute in 0.05 mL of sterile-filtered PBS (pH 7.4) to achieve an antibody concentration of 1 mg/mL. Centrifuge to remove any insoluble material.
Storage InstructionsAt least 12 months after purchase at 2-8°C (lyophilized formulations). After reconstitution, aliquot and store at -20°C for a higher stability and at 2-8°C with an appropriate antibacterial agent.Avoid freeze-thaw cycles
Batch NumberPlease see item label.
Expiration Date12 months after date of receipt (unopened vial).
Alternative NamesEM 1; EM 2;
Scientific BackgroundEndomorphins 1 and 2 are endogenous opioid peptides which have the highest affinity for the mu-opioid receptors. Located in various parts of the brain and interacts with mu-opioid receptors and produces analgesia.
Immunohistochemical staining in rat ventral periaqueductal grey matter (PAG). 4% paraformaldehyde fixed rat brain crystostat sections (10 µm) were incubated overnight at 4°C with Rabbit polyclonal antibody to Endomorphin-1 and Endomorphin-2 (10 µg/mL) followed by incubation with donkey anti-rabbit Rhodamine Red conjugated secondary antibody (1:200).