The monoclonal antibody 7C2 can be used during various purification steps of IgY. The yolk of eggs laid by immunized chickens has been recognized as an excellent source of polyclonal antibodies (pAb). Specific antibodies produced in chickens offer several important advantages over producing antibodies in other mammals. Because a single egg contains as much antibody as an average bleed from a rabbit, this simple, non-invasive approach presents an appealing alternative to conventional pAb production methods. Purification of chicken egg yolk immunoglobulin Y (IgY), the 150 kDa IgG homolog, does not require animal bleeding. In addition, the eggs from immunized chickens provide a continual, daily source of pAb, and this convenient approach offers greater compatibility with animal protection regulations. Due to the phylogenetic distance between birds and mammals, there is greater potential of producing a higher percentage of specific antibody against mammalian antigens when using chickens. Highly conserved mammalian proteins sometimes fail to illicit a humoral response in animals, such as rabbits, that are traditionally used for generating pAb. Non-specific binding and need for cross-species immunoabsorptions is eliminated since chicken IgY does not cross-react with mammalian IgG and does not bind bacterial or mammalian Fc receptors. There are well defined structural differences of IgY-type immunoglobulins and the IgG of mammals. That includes the molar mass of the heavy chains of the immunoglobulins. The IgY-type immunoglobulins are much less flexible than IgG. Also, the structures of the Fc part of the immunoglobulin isotypes IgY and IgG are different. The 7C2 antibody is cross reactive for duck
The protein encoded by this gene is expressed only in Langerhans cells which are immature dendritic cells of the epidermis and mucosa. It is localized in the Birbeck granules, organelles present in the cytoplasm of Langerhans cells and consisting of superimposed and zippered membranes. It is a C-type lectin with mannose binding specificity, and it has been proposed that mannose binding by this protein leads to internalization of antigen into Birbeck granules and providing access to a nonclassical antigen-processing pathway. Mutations in this gene result in Birbeck granules deficiency or loss of sugar binding activity.
Product Type:
Antibodies Primary
Antibody Type:
monoclonal
Storage Temp:
4°C -20°C for long term storage
Host Animal:
mouse
Immunogen:
Purified recombinant fragment of human CD207 (AA: extra 155-328) expressed in E. Coli.
Clones AE1 and AE3 are specific for the 56.5, 50, 50', 48 and 40 kD acidic cytokeratins as well as the 65 to 67, 64, 59, 58, 56 and 52 kD basic cytokeratins. The cocktail of clones AE1 and AE3 exhibit broad reactivity with two families of cytokeratin, acidic and basic.
Antibody Isotype:
IgG1
Monosan Range:
MONXtra
Clone:
AE1/AE3
Concentration:
Greater than or equal to 225 mg/L
Storage buffer:
Tissue culture supernatant with sodium azide
Storage:
2-8°C
References 1:
Nadji M, Morales AR. Laboratory Medicine. 1983; 14:767
References 2:
Omata M et al. Am.J.of Clin. Pathol. 1980; 73:626
References 3:
Su T et al. Diagnostic Pathology. 2014; 9: 179
References 4:
Zhao W et al. Int.J. of Clin. and Exp.Pathol. 2014; 7(11): 7951-7956
References 5:
Hammers HJ et al. Molecular Cancer Therapeutics. 2010; 9(6): 1525-1535
The antibody is reactive with collagen type IV of basement membranes, and shows a homogeneous staining pattern in all tissues. As neoplastic cells of invasive carcinomas often lack a continuous basement membrane, the antiserum is useful to distinguish between non-invasive and invasive lesions. Additionally, it can be used for the differentiation of bullous lesions in dermatopathology. In immunohistochemistry no cross-reactivity with other collagens at optimal dilutions. In immunoblotting, a slight cross-reactivity with collagen type V is observed. Positive control: Skin, kidney.
Laminin is a glycoprotein (Mr 850 - 1.000 kD, consisting of 3 glycosylated polypeptide chains with molecular weights of 440 and 225 (2x) kD) produced by various human epithelial and mesenchymal cells, and forms an extracellular matrix of thin filaments. In normal tissues, laminin is invariably present in all basal laminas surrounding muscle, nerve, fat and decidua cells and separates epithelial and endothelial cells from abutting connective tissues. Laminin has also been identified within the cytoplasm of breast epithelia, stromal cells of the endometrium, and within endothelial, bile duct epithelial and mesenchymal cells of the liver. Laminin has been found to be involved in cellular activities such as adhesion, spreading, differentiation, polarization, proliferation, locomotion, tissue invasion and chemotactic responses. <br />No cross reaction was obtained with human type I, III, IV and V collagen in immunoblotting, whereas the antibody reacted with a distinct band of appr. 200-220 kD from a 8M Urea extract from amnion basement membrane. Positive control: skin, kidney.
The monoclonal antibody 7C2 can be used during various purification steps of IgY. The yolk of eggs laid by immunized chickens has been recognized as an excellent source of polyclonal antibodies (pAb). Specific antibodies produced in chickens offer several important advantages over producing antibodies in other mammals. Because a single egg contains as much antibody as an average bleed from a rabbit, this simple, non-invasive approach presents an appealing alternative to conventional pAb production methods. Purification of chicken egg yolk immunoglobulin Y (IgY), the 150 kDa IgG homolog, does not require animal bleeding. In addition, the eggs from immunized chickens provide a continual, daily source of pAb, and this convenient approach offers greater compatibility with animal protection regulations. Due to the phylogenetic distance between birds and mammals, there is greater potential of producing a higher percentage of specific antibody against mammalian antigens when using chickens. Highly conserved mammalian proteins sometimes fail to illicit a humoral response in animals, such as rabbits, that are traditionally used for generating pAb. Non-specific binding and need for cross-species immunoabsorptions is eliminated since chicken IgY does not cross-react with mammalian IgG and does not bind bacterial or mammalian Fc receptors. There are well defined structural differences of IgY-type immunoglobulins and the IgG of mammals. That includes the molar mass of the heavy chains of the immunoglobulins. The IgY-type immunoglobulins are much less flexible than IgG. Also, the structures of the Fc part of the immunoglobulin isotypes IgY and IgG are different. The antibody 7C2 is cross reactive for duck IgY.
Conglutin gamma, an oligomeric protein, is one of storage proteins of lupin seeds, called also lupin-specific globulin.
Product Type:
Antibody
Antibody Type:
Polyclonal
Format:
Lyophilized
Storage Temp:
Store lyophilized/reconstituted at -20 °C; once reconstituted make aliquots to avoid repeated freeze-thaw cycles. Please remember to spin the tubes briefly prior to opening them to avoid any losses that might occur from material adhering to the cap or sides of the tube.
No confirmed exceptions from predicted reactivity are currently known
Selected references:
Villa et al. (2020). Immunoreactivity of Lupine and Soybean Allergens in Foods as Aected by Thermal Processing. Foods. 2020 Feb 27;9(3). pii: E254. doi: 10.3390/foods9030254.Tomczak et al. (2019). Differences in the immunoreactivity of milk from local farms and from points of purchase. Eur Food Res Technol, Nov 2019.Foley et al. (2015). Analysis of conglutin seed storage proteins across lupin species using transcriptomic, protein and comparative genomic approaches. BMC Plant Biol. 2015 Apr 19;15:106. doi: 10.1186/s12870-015-0485-6.Czubiński et al. (2015). Digestion susceptibility of seed globulins isolated from different lupin species. European Food Research and Technology pp 1-13.
Research area:
Food Proteins/Allergens
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