|Tested species reactivity||Guinea pig|
|Published species reactivity||Not Applicable|
|Host / Isotype||Goat / IgG|
|Immunogen||Gamma Immunoglobins Heavy and Light chains|
|Conjugate||Alexa Fluor® 647|
|Storage buffer||PBS, pH 7.5|
|Contains||5mM sodium azide|
|Storage Conditions||4° C, store in dark|
|Cross Adsorption||Against bovine, chicken, goat, hamster, human, mouse, rabbit, rat and sheep sera prior to conjugation|
|Antibody Form||Whole Antibody|
|Tested Applications||Dilution *|
|Immunocytochemistry (ICC)||1-10 µg/ml|
|Immunofluorescence (IF)||1-10 µg/mL|
|Immunohistochemistry (IHC)||1-10 µg/ml|
* Suggested working dilutions are given as a guide only. It is recommended that the user titrate the product for use in their own experiment using appropriate negative and positive controls.
To minimize cross-reactivity, these goat anti-guinea pig IgG (H+L) whole secondary antibodies have been affinity purified and cross-adsorbed against bovine, chicken, goat, hamster, human, mouse, rabbit, rat, and sheep sera prior to conjugation. Cross-adsorption or pre-adsorption is a purification step to increase specificity of the antibody resulting in higher sensitivity and less background staining. The secondary antibody solution is passed through a column matrix containing immobilized serum proteins from potentially cross-reactive species. Only the nonspecific-binding secondary antibodies are captured in the column, and the highly specific secondaries flow through. The benefits of this extra step are apparent in multiplexing/multicolor-staining experiments (e.g., flow cytometry) where there is potential cross-reactivity with other primary antibodies or in tissue/cell fluorescent staining experiments where there are may be the presence of endogenous immunoglobulins.
Alexa Fluor dyes are among the most trusted fluorescent dyes available today. Invitrogen™ Alexa Fluor 647 dye is a near-infrared-fluorescent dye with excitation ideally suited to the 647 nm laser line. For stable signal generation in imaging and flow cytometry, Alexa Fluor 647 dye is pH-insensitive over a wide molar range. Probes with high fluorescence quantum yield and high photostability allow detection of low-abundance biological structures with great sensitivity. Alexa Fluor 647 dye molecules can be attached to proteins at high molar ratios without significant self-quenching, enabling brighter conjugates and more sensitive detection. The degree of labeling for each conjugate is typically 2-8 fluorophore molecules per IgG molecule; the exact degree of labeling is indicated on the certificate of analysis for each product lot.
Using conjugate solutions: Centrifuge the protein conjugate solution briefly in a microcentrifuge before use; add only the supernatant to the experiment. This step will help eliminate any protein aggregates that may have formed during storage, thereby reducing nonspecific background staining. Because staining protocols vary with application, the appropriate dilution of antibody should be determined empirically. For the fluorophore-labeled antibodies a final concentration of 1-10 µg/mL should be satisfactory for most immunohistochemistry and flow cytometry applications.
We offer an extensive line of Invitrogen™ secondary antibody conjugates with well-characterized specificity and labeled with a wide selection of premium fluorescent dyes, including Invitrogen™ Alexa Fluor™ fluorescent dyes. Fluorescent secondary antibody conjugates are useful in the detection, sorting, or purification of its specified target and ideal for fluorescence microscopy and confocal laser scanning microscopy, flow cytometry, and fluorescent western detection. The breadth of fluorescent markers we offer allows our reagents to be tailored to almost any fluorescent detection system.
Secondary antibodies may be provided in three formats: whole IgG, divalent F(ab')2 fragments, and monovalent Fab fragments. Because of the high degree of conservation in the structure of many immunoglobulin domains, most class-specific secondary antibodies must be affinity-purified and cross-adsorbed to achieve minimal cross-reaction with other immunoglobulins.
Our secondary antibody conjugates are most commonly prepared by immunizing the host animal with a pooled population of immunoglobulins from the target species and can be further purified and modified (e.g., immunoaffinity chromatography, antibody fragmentation, label conjugation, etc.) to generate highly specific reagents. In the first round of purification, whole immunoglobulins binding to the immunizing antibody are recovered and mainly consist of the ~150-kDa IgG class. Further purification, for example, with Protein A or G, removes all unwanted immunoglobulin classes except the affinity-purified antibodies that react with the target-specific immunoglobulin heavy and/or light chains.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Regulating the dorsal neural tube expression of Ptf1a through a distal 3' enhancer.
A-21450 was used in immunohistochemistry - frozen section to assess dorsalneural tube expression of Ptf1a regulated through a distal 3' enhancer
|Mona B,Avila JM,Meredith DM,Kollipara RK,Johnson JE||Developmental biology (418:216)||2016|
Inhibitory effects of endomorphin-2 on excitatory synaptic transmission and the neuronal excitability of sacral parasympathetic preganglionic neurons in young rats.
A-21450 was used in immunohistochemistry - paraffin section to study inhibition on excitatory synaptic transmission andn neuronal excitability of sacral parasympathetic preganglionic neurons in young rats by endomorphin-2
|Chen YB,Huang FS,Fen B,Yin JB,Wang W,Li YQ||Frontiers in cellular neuroscience (9:null)||2015|
|Not Applicable||Not Cited||Nuclear pore scaffold structure analyzed by super-resolution microscopy and particle averaging.||Szymborska A,de Marco A,Daigle N,Cordes VC,Briggs JA,Ellenberg J||Science (New York, N.Y.) (341:655)||2013|
|Not Applicable||Not Cited||Transsynaptic tracing with vesicular stomatitis virus reveals novel retinal circuitry.||Beier KT,Borghuis BG,El-Danaf RN,Huberman AD,Demb JB,Cepko CL||The Journal of neuroscience : the official journal of the Society for Neuroscience (33:35)||2013|
|Not Applicable||Not Cited||Purified human pancreatic duct cell culture conditions defined by serum-free high-content growth factor screening.||Hoesli CA,Johnson JD,Piret JM||PloS one (7:null)||2012|
|Not Applicable||Not Cited||Demonstration of islet-autoreactive CD8 T cells in insulitic lesions from recent onset and long-term type 1 diabetes patients.||Coppieters KT,Dotta F,Amirian N,Campbell PD,Kay TW,Atkinson MA,Roep BO,von Herrath MG||The Journal of experimental medicine (209:51)||2012|
|Not Applicable||Not Cited||Protective role of endogenous gangliosides for lysosomal pathology in a cellular model of synucleinopathies.||Wei J,Fujita M,Nakai M,Waragai M,Sekigawa A,Sugama S,Takenouchi T,Masliah E,Hashimoto M||The American journal of pathology (174:1891)||2009|
|Not Applicable||Not Cited||Beta cells cannot directly prime diabetogenic CD8 T cells in nonobese diabetic mice.||de Jersey J,Snelgrove SL,Palmer SE,Teteris SA,Mullbacher A,Miller JF,Slattery RM||Proceedings of the National Academy of Sciences of the United States of America (104:1295)||2007|