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- Table of Contents
Expect selective cytoplasmic staining in stomach parietal cells (HPA tissue IHC). This paraffin IHC guide pairs that pattern with the apical canalicular membrane location (UniProt) and the catalog antibody’s 2–5 μg/ml IHC range (datasheet A08719-2).
Expected localisation, validated protocols, controls and antibodies — the at-a-glance facts below, then the full design guide.
| Expected localisation | Parietal-cell cytoplasm (HPA tissue IHC) | |
| Staining pattern | Selective cytoplasmic staining in parietal cells (HPA tissue IHC) | |
| Antigen retrieval | EDTA pH 8.0 HIER, heat-mediated (datasheet A08719-2) | |
| Positive control | Stomach | |
| Negative control | Adipose tissue+4 more · see all |
| Fixation | Keep fixation consistent across sections (standard IHC practice; not target-specific). Selected-image fixative and duration unreported (datasheet A08719-2); verify before use. | |
| Caveat | Cytoplasmic IHC may not resolve apical canaliculi (HPA tissue IHC; UniProt) | |
| Regulation | Stomach-enriched RNA expression (HPA tissue IHC) | |
| Isoform / epitope | No isoforms annotated; epitope side matters across TM 37–57 (UniProt) |
The catalog antibody’s IHC-P protocol (datasheet A08719-2) is followed by two published ATP4B paraffin-section protocols (PMC12697849; PMC8128498).
| Sample | Paraffin-embedded mouse stomach tissue; fixative not specified (datasheet A08719-2) |
| Fixation | Image fixative and duration unreported (datasheet A08719-2); verify before use. |
| Sectioning | 4–5 µm sections on charged slides (standard) |
| Deparaffinisation | Xylene, graded ethanol series to water (standard) |
| Antigen retrieval | Heat retrieval: EDTA pH 8.0 (datasheet A08719-2); 20 min, 95–100 °C (standard) |
| Peroxidase block | 3% H2O2, 10 min, room temperature (standard) |
| Blocking | 10% goat serum (datasheet A08719-2) |
| Primary antibody | Rabbit anti-ATP4B, 2-5 μg/ml (datasheet A08719-2) |
| Primary incubation | Overnight at 4 °C (datasheet A08719-2) |
| Detection | HRP-conjugated secondary, DAB chromogen (datasheet A08719-2) |
| Counterstain | Hematoxylin, blue, dehydrate and mount (standard) |
| Expected result | ATP4B-positive staining in glandular cells of stomach (HPA tissue IHC: High). HPA tissue profile: Selective cytoplasmic expression in parietal cells. No signal in the no-primary control. |
ATP4B should stain stomach parietal cells selectively: HPA describes a cytoplasmic-appearing pattern with Enhanced tissue IHC reliability and high staining in stomach glandular cells (HPA tissue IHC). UniProt places ATP4B at the apical canalicular membrane of parietal cells and identifies one membrane-spanning segment at residues 37–57 (UniProt P51164 topology). Interpret the slide using both the observed HPA pattern and the membrane location.
| Strong, selective staining in stomach parietal cells, cytoplasmic-appearing with canalicular emphasis where visible. | This fits the observed parietal-cell pattern (HPA tissue IHC). Apical canalicular emphasis fits ATP4B localisation (UniProt P51164 subcellular location). |
| Predominantly nuclear staining, with little convincing parietal-cell staining. | Nuclear-only signal conflicts with the observed cytoplasmic-appearing pattern (HPA tissue IHC) and membrane location (UniProt P51164). Treat it as suspect; check controls before scoring. |
| Strong staining in other cell types or in a tissue listed as not detected. | This conflicts with selective parietal-cell expression (HPA tissue IHC). Cross-reactivity or endogenous detection activity is possible (standard IHC-P practice); examine the no-primary control. |
| Diffuse chromogen across cells and stroma obscures the glands. | A broad haze cannot establish the selective parietal-cell pattern (HPA tissue IHC). Assess background with a no-primary control and review blocking, antibody concentration and detection (standard IHC-P practice). |
| No staining in an adequately sampled stomach section. | Stomach is the expected high-staining tissue (HPA tissue IHC). Check that parietal cells are present, then review the IHC-P controls and reagent performance (standard IHC-P practice). |
| Cell identity and tissue | Use stomach sections containing identifiable parietal cells for the positive reference: HPA reports high glandular-cell staining and selective parietal-cell expression (HPA tissue IHC). |
| Membrane topology | ATP4B has one transmembrane segment at 37–57, a cytoplasmic N-terminus and an extracellular C-terminal region (UniProt P51164 topology). These facts do not identify the antibody epitope. |
| Glycosylation | UniProt annotates 7 glycosylation sites (UniProt P51164). Their effect on this antibody's IHC-P staining is unreported in the supplied sources; do not infer a retrieval requirement. |
| HPA validation | The tissue profile has Enhanced reliability through staining/RNA consistency (HPA tissue IHC). HPA045400 and HPA052649 each have Enhanced IHC status (HPA antibodies); that does not validate an unspecified catalog antibody. |
| Processing and isoforms | UniProt lists a 1–291 chain, no annotated propeptide and no isoforms (UniProt P51164). The supplied record gives no basis for predicting a processed-form-specific staining pattern. |
| Negative reference tissues | HPA lists adipocytes in adipose tissue and glandular cells in adrenal gland as not detected (HPA tissue IHC). Use such results as context; they do not replace controls for nonspecific staining. |
| Situation | Likely cause | Next action |
|---|---|---|
| Stomach section has no convincing positive cells. | Parietal cells may be absent from the sampled area, or the IHC-P run may have failed (HPA tissue IHC; standard IHC-P practice). | Confirm parietal-cell morphology on the counterstained section; review positive control, detection reagents and the antibody's stated IHC-P conditions (standard IHC-P practice). |
| Staining is weak despite visible parietal cells. | A weak run may obscure the high stomach staining reported by HPA (HPA tissue IHC). The supplied sources do not establish ATP4B-specific fixation or retrieval sensitivity. | Compare with a successful control and review the antibody's IHC-P retrieval and dilution instructions before adjusting conditions (standard IHC-P practice). |
| Chromogen is widespread or obscures cell boundaries. | Diffuse background prevents assessment of the selective pattern (HPA tissue IHC); excessive antibody or detection background are possible general causes (standard IHC-P practice). | Inspect the no-primary control, then review blocking, wash steps, antibody concentration and detection timing (standard IHC-P practice). |
| Signal is predominantly nuclear. | Nuclear-only staining conflicts with HPA's cytoplasmic-appearing observation and UniProt's membrane assignment (HPA tissue IHC; UniProt P51164). | Treat nuclear signal as unconfirmed; compare cell morphology, the no-primary control and a known-positive stomach section before scoring (standard IHC-P practice). |
| Nonparietal cells stain strongly, including cells in a listed negative tissue. | The distribution conflicts with selective parietal-cell expression and HPA not-detected results (HPA tissue IHC). Cross-reactivity or endogenous detection activity is possible (standard IHC-P practice). | Check the no-primary control and detection system; require a selective parietal-cell pattern in stomach before interpreting the signal as ATP4B (HPA tissue IHC; standard IHC-P practice). |
| What pattern should an IF/ICC image show? | HPA reports plasma-membrane localisation by ICC-IF, while UniProt specifies the parietal-cell apical canalicular membrane (HPA subcellular; UniProt P51164). | Assess membrane localisation in its cell context; use the separate IF/ICC guide for assay setup. An ICC-IF image alone does not establish the stomach IHC-P pattern (HPA subcellular; HPA tissue IHC). |
Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Enhanced — High consistency between antibody staining and RNA expression data.). Rows are taken directly from the HPA tissue chart — click any row's HPA link to view the source.
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Stomach | Glandular cells | High | Protein (IHC) | HPA → |
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Adipose tissue | Adipocytes | Not detected | Protein (IHC) | HPA → |
| Adrenal gland | Glandular cells | Not detected | Protein (IHC) | HPA → |
| Appendix | Glandular cells | Not detected | Protein (IHC) | HPA → |
| Bone marrow | Hematopoietic cells | Not detected | Protein (IHC) | HPA → |
| Breast | Adipocytes | Not detected | Protein (IHC) | HPA → |
Troubleshoot ATP4B staining in paraffin sections using the catalog antibody’s IHC conditions and the expected parietal-cell pattern.
The IHC-validated antibody has paraffin-section IHC and IF images from mouse and rat stomach (catalog IHC/IF captions).
Only A08719-2 will render; its listed applications include IHC and IF, with human, mouse and rat reactivity (catalog applications/reactivity). Its images show paraffin-section IHC and IF in mouse and rat stomach (catalog IHC/IF captions).
Which to pick: For chromogenic tissue IHC, choose A08719-2: its paraffin-section stomach captions document EDTA pH 8.0 retrieval and DAB detection in mouse and rat; the fixative is unreported (catalog IHC captions). For fluorescence, the same SKU has paraffin-section IF images in mouse and rat stomach, while ICC validation is unreported (catalog IF captions; catalog applications). For work across species, the catalog lists human, mouse and rat reactivity, but the pictured IHC and IF results cover mouse and rat only; it lists a rabbit host and does not report clonality (catalog reactivity/host/clone; catalog IHC/IF captions).