- Purified, liquid, small
- Mouse monoclonal
- Suitable for ICC/IF, IHC and WB
- Reacts with bovine, human, pig and sheep
- Isotype: IgG1
Product description
| Quantity | 200 µl (50 µg/ml) |
|---|---|
| Antibody Type | Monoclonal |
| Host | Mouse |
| Isotype | IgG1 |
| Conjugate | Unconjugated |
| Application | ICC/IF, IHC, WB |
| Purification | Affinity chromatography |
| Reactivity | Bovine, Human, Pig, Sheep |
| No reactivity | Dog, Mouse, Rabbit, Rat |
| Storage | Short term at 2-8°C; long term storage in aliquots at -20°C; avoid freeze/thaw cycles |
| Intended use | Research use only |
| Clone | Ks7.18 |
| Immunogen | Cytoskeletal proteins from cultured HeLa cells |
| Concentration | 50 µg/ml (10 µg) |
| Formulation | Contains 0.09% sodium azide, 0.5% BSA in PBS buffer, pH 7.4 |
| UniprotID | Q29S21 (Bovine), P08729 (Human), A0A287ASI0 (Pig), H0VIA2 (Guinea pig), A0A6P7DW90 (Sheep) |
| Synonym | Keratin, type II cytoskeletal 7, Cytokeratin-7, CK-7, Keratin-7, K7, Sarcolectin, Type-II keratin Kb7, KRT7, SCL |
Applications
| Tested applications | Tested dilutions |
|---|---|
| Immunocytochemistry (ICC)/ Immunofluorescence (IF) | Assay dependent |
| Immunohistochemistry (IHC) - frozen | 1:50-1:250 (0.2-1 µg/ml) |
| Immunohistochemistry (IHC) - paraffin | 1:50-1:250 (0.2-1 µg/ml, protease treatment and/or microwave treatment recommended) |
| Western Blot (WB) | 1:1,000-1:2,000 (25-50 ng/ml) |
Background
Ks7.18 represents an excellent marker for the discrimination of specific subtypes of adenocarcinoma: e.g. adenocarcinoma of pancreas, bile duct carcinoma and transitional carcinoma of bladder are stained, whereas hepatocellular and prostate carcinomas are negative.
Detects specific subtypes of adenocarcinomas: adenocarcimona of pancreas, gallbladder, lung, cervix; cholangio carcinoma of liver; ductal and lobular carcinoma of breast; carcinomas of ovary; transitional cell carcinoma of bladder; mesothelioma; negative with most cases of hepatocellular carcinoma. In colorectal carcinoma early stages are reported to be negative but advanced stages of tumor development are positive for keratin K7 expression. Occasionally, staining of blood vessel walls, particularly of endothelial cells may be observed.
Reacts with Mr 54,000 polypeptide (keratin K7; formerly also designated cytokeratin 7) of human glandular epithelia.
Reactivity on cultured cell lines: HeLa, RT 112, T24, BT-20, CAMA-1, Detroit 562, (MCF-7 and HT-29 are negative).
References/Publications (3)
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FAQs
The concentration of purified antibodies is mentioned on the datasheet.
For prediluted antibodies the concentration may vary from lot to lot. The concentration of these antibodies is not mentioned on the datasheet and can be requested at support@progen.com.
The supernatant format contains FCS proteins from cell culture medium supplemented with FCS.
The serum antibodies contain other proteins present in serum.
- Supernatant and supernatant concentrate: This format contains hybridoma cell culture supernatant. The antibody is not purified and the antibody concentration is not determined. The antibody concentration may vary from lot to lot. Therefore we recommend to titrate the optimal concentration for the application used for each new lot.
- Lyophilized, purified: This format contains purified antibody in lyophilized form. The reconstitution of this antibody is described in the datasheet. The buffer composition after reconstitution is also mentioned on the datasheet.
- Liquid, purified: This format contains purified antibody in liquid format. The concentration is mentioned on the datasheet.
- Prediluted, purified: This format contains purified antibody in liquid format. Most antibodies in this format are diluted to be ready-to-use for IHC with standard tissue. But some antibodies of this format need further dilution for IHC. This is mentioned on the datasheet.
Most of our liquid antibodies and reconstituted lyophilized antibodies may be stored for short term storage (up to 3 month) at 2-8°C. For long term storage we recommend to store the antibody at -20°C in aliquots. Please avoid freeze and thaw cycles.
Most of our conjugated antibodies should be stored at 2-8°C.
The individual storage conditions are mentioned on the datasheet.
Positive tissue: outer root sheath of hair follicle, sweat gland epithelium on the foot pads, filiform papillae of tongue.
- Homogenization (e.g. with polytron) of tissue samples in buffer L (140 mM NaCl, 5 mM EDTA, 5 mM EGTA, 10 mM Tris-HCl pH7.6) supplemented with protease inhibitors; use 1 ml buffer for approx. 0.1 g tissue.
- To reduce viscosity by high DNA contents, benzonase treatment can be included (30 min at 37°C).
- Centrifugation for 10 min (max. speed, table top centrifuge).
- Resuspend pellet in "Triton extraction buffer" (buffer L plus 1% Triton X-100) using e.g. a dounce homogenizer.
- Centrifugation for 10 min (max. speed, table top centrifuge).
- Resuspend pellet in "high salt extraction buffer" (buffer L plus 1.5 M KCl) using e.g. a dounce homogenizer.
- Centrifugation for 10 min (max. speed, table top centrifuge).
- Resuspend pellet in "Triton extraction buffer" (buffer L plus 1% Triton X-100) using e.g. a dounce homogenizer.
- Centrifugation for 10 min (max. speed, table top centrifuge).
- Resuspend pellet in Laemmli buffer and boil (5 min) for SDS-PAGE.
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