KTN1 / Kinectin · IHC design guide

Design Immunohistochemistry for KTN1

This guide covers KTN1 paraffin-section IHC using the catalog antibody's 2–5 μg/ml range (datasheet A05071-1). Plan controls around its cytoplasmic tissue staining (HPA tissue IHC) and interpret that pattern alongside its ER membrane location (UniProt).

Evidence assembled Oct 2026 · For research use; verify linked source records and product datasheet before use

Immunohistochemistry protocol sheet for KTN1 (IHC for KTN1): expected localisation Cytoplasmic tissue staining (HPA tissue IHC), antibody A05071-1, validated IHC image, and IHC protocol steps — Printable **KTN1** IHC protocol sheet — expected localisation Cytoplasmic tissue staining (HPA tissue IHC), antibody A05071-1, controls and protocol steps. Open the full KTN1 IHC guide →

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KTN1 Immunohistochemistry Experimental Design Guide

Expected localisation, validated protocols, controls and antibodies — the at-a-glance facts below, then the full design guide.

Must know before staining

	Expected localisation	Cytoplasmic tissue staining (HPA tissue IHC)
	Staining pattern	Cytoplasmic staining across diverse cell types (HPA tissue IHC)
	Antigen retrieval	EDTA pH 8.0 HIER, heat-mediated (datasheet A05071-1)
	Positive control ⓘ	Adrenal gland+4 more · see all
	Negative control ⓘ	None in HPA (detected in all 45 tissues); use no-primary + isotype controls

Important caveats

Reasons your staining may differ from the expected pattern.

	Fixation	Keep paraffin-section fixation consistent (standard IHC practice; not target-specific); Matched tissue-IHC evidence does not establish the fixation claim. Validate the specimen-specific method before use. (selected-SKU IHC image A05071-1)
	Caveat	Staining has medium consistency with RNA expression (HPA tissue IHC)
	Regulation	Integrin aggregation enriches adhesion complexes (UniProt)
	Isoform / epitope	4 isoforms; map epitopes to cytoplasmic or ER-luminal regions (UniProt)

Section 1

Recommended KTN1 IHC & IF Protocols

The catalog antibody’s IHC-P protocol uses EDTA pH 8.0 retrieval (datasheet: A05071-1). One published KTN1 IHC protocol provides a breast tissue microarray alternative (PMC9253731).

Recommended immunohistochemistry (IHC-P) protocol parameters
Sample	Paraffin-embedded human spleen tissue; fixative not specified (datasheet A05071-1)
Fixation	Image fixative and duration unreported (datasheet A05071-1); 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 A05071-1); 20 min, 95–100 °C (standard)
Peroxidase block	3% H2O2, 10 min, room temperature (standard)
Blocking	10% goat serum (datasheet A05071-1)
Primary antibody	Rabbit anti-KTN1, 2-5 μg/ml (datasheet A05071-1)
Primary incubation	Overnight at 4 °C (datasheet A05071-1)
Detection	Streptavidin-biotin complex (SABC), DAB chromogen (datasheet A05071-1)
Counterstain	Hematoxylin, blue, dehydrate and mount (standard)
Expected result	KTN1-positive staining in glandular cells of adrenal gland (HPA tissue IHC: High). HPA tissue profile: Ubiquitous cytoplasmic expression. No signal in the no-primary control.

💡Decision noteStart with heat-mediated EDTA pH 8.0 retrieval for the catalog antibody (datasheet: A05071-1); compare citrate pH 6.0 if needed (PMC9253731).

Section 2

What Is the Expected KTN1 Staining Pattern?

KTN1 should stain the cytoplasm of many cell types, consistent with its endoplasmic reticulum membrane location and single transmembrane segment at residues 7–29 (UniProt Q86UP2). HPA reports ubiquitous cytoplasmic tissue staining, with high signal in several glandular, epithelial and hematopoietic cell populations; its IHC reliability is Enhanced, although antibody staining and RNA expression have only medium consistency (HPA tissue IHC).

What am I looking at on my slide?
Cytoplasmic chromogen in glandular cells of adrenal gland, appendix or breast, or in bronchial epithelium.	This fits HPA's High staining in those cells and its ubiquitous cytoplasmic profile (HPA tissue IHC). In paraffin sections, an ER-associated pattern may appear broadly cytoplasmic; a fine reticular pattern need not be resolved to support the call (UniProt Q86UP2; HPA subcellular ICC-IF).
Predominantly nuclear, extracellular or sharply membrane-only staining, with little cytoplasmic signal.	That distribution conflicts with the reported cytoplasmic IHC profile and ER location (HPA tissue IHC; HPA subcellular ICC-IF). Treat it as suspect until controls and tissue morphology support a specific interpretation; the provided sources do not establish those compartments as expected KTN1 staining.
Strong staining in an unexpected cell population while adjacent expected cells remain weak.	Compare the cells with HPA's named populations before assigning a positive result: hematopoietic cells in bone marrow and glial cells in caudate are reported High, while heart cardiomyocytes are reported Low (HPA tissue IHC). An unexplained mismatch may reflect antibody cross-reactivity or endogenous detection activity (general IHC practice).
Chromogen spreads evenly across cells, stroma and section edges, obscuring cell boundaries.	This is background rather than a readable cytoplasmic distribution (general IHC interpretation). Review the no-primary control and staining workflow; HPA's ubiquitous cytoplasmic profile does not mean every section component should have uniform signal (HPA tissue IHC).
No cytoplasmic signal in a section expected to show high staining.	A blank result in adrenal glandular cells, bronchial respiratory epithelial cells or bone marrow hematopoietic cells conflicts with HPA's High observations (HPA tissue IHC). Check tissue identity, assay controls and reagent performance before concluding that KTN1 is absent; no target-specific fixation sensitivity is reported here.

💡Expected KTN1 appearanceCall a positive when intact cells show discernible cytoplasmic chromogen, including High signal in HPA-listed glandular, epithelial or hematopoietic populations; dominant nuclear or extracellular color is suspect (HPA tissue IHC; UniProt Q86UP2).

How each factor affects the staining
Cell and tissue choice	HPA reports High staining in adrenal, appendix and breast glandular cells, bronchial respiratory epithelium and bone marrow hematopoietic cells, but Low staining in heart cardiomyocytes (HPA tissue IHC). Use those observations to choose comparison sections; low is not an established negative.
Subcellular context	KTN1 is anchored to the ER by one transmembrane segment, with residues 30–1357 annotated as lumenal (UniProt Q86UP2 topology). HPA calls the ICC-IF location ER and the tissue IHC profile cytoplasmic (HPA subcellular ICC-IF; HPA tissue IHC). Interpret compartment at the resolution of the assay.
Antibody validation	HPA rates tissue IHC reliability Enhanced and describes medium agreement between antibody staining and RNA expression (HPA tissue IHC). Two listed antibodies have Enhanced IHC status; a third is Supported (HPA antibodies). These ratings support comparison with the reference pattern, not an assumption that every stained cell is specific.
Isoforms and epitope coverage	UniProt lists 4 KTN1 isoforms (UniProt Q86UP2). The supplied record gives no antibody epitope or isoform coverage, so differences between reagents cannot be assigned to a particular isoform. Check the catalog antibody's stated target region before interpreting discordant staining.
Post-translational features	UniProt annotates 8 glycosylation sites and several modified residues (UniProt Q86UP2). Their effect on this assay is unreported; they do not justify predicting tissue-specific staining, retrieval needs or fixation sensitivity from the supplied evidence.
IF/ICC: what pattern is expected?	Expect ER-associated signal: HPA reports an enhanced ER location and lists ICC-IF images from A-431, U-251MG and U2OS (HPA subcellular ICC-IF). This provides a compartment check for IF/ICC, while the primary interpretation here concerns chromogenic IHC in paraffin sections.

Why is my staining missing, weak or wrong?
Situation	Likely cause	Next action
Known high-staining cells are blank.	The result conflicts with HPA's High observations in several named cell populations; tissue identification or assay performance may be at issue (HPA tissue IHC; general IHC practice).	Confirm the expected cells are present, then review the catalog antibody's IHC-P instructions, detection reagents and positive control together. Avoid calling biological absence from a failed control (general IHC practice).
Signal is mostly nuclear or extracellular.	Those compartments do not match HPA's cytoplasmic IHC profile or ER location (HPA tissue IHC; HPA subcellular ICC-IF).	Compare a known high-staining section and a no-primary control, and inspect whether color follows intact cell cytoplasm rather than nuclei or section debris (general IHC practice).
Heart cardiomyocytes appear as strong as a high-staining comparator.	HPA records cardiomyocytes as Low, whereas several glandular and hematopoietic populations are High (HPA tissue IHC). Staining strength may reflect background or assay settings; the record alone cannot identify the cause.	Compare sections processed together, confirm cell identity and review the no-primary control. Treat the HPA Low observation as a comparator, not proof of complete absence (HPA tissue IHC; general IHC practice).
Every structure has similar diffuse color.	Uniform color can obscure the cell-specific cytoplasmic pattern reported by HPA (HPA tissue IHC); nonspecific detection or inadequate washing are general IHC possibilities.	Inspect the no-primary control, blocking and wash steps, then reassess whether cytoplasmic signal remains distinguishable from background (general IHC practice).
Unexpected cell types stain strongly.	HPA reports staining across many tissues, so an unfamiliar positive is not automatically erroneous (HPA tissue IHC). Cross-reactivity or endogenous detection activity remains possible when expected cells and controls disagree (general IHC practice).	Identify the stained cells, compare them with HPA's cell-level observations, and use a no-primary control to assess detection-derived color before assigning KTN1 positivity (HPA tissue IHC; general IHC practice).
Antibodies give different cytoplasmic patterns.	HPA lists different IHC validation levels, while the supplied record does not identify antibody epitopes or isoform coverage (HPA antibodies; UniProt Q86UP2).	Compare each antibody's catalog target information and IHC controls, then retain the interpretation that best matches HPA's cytoplasmic tissue pattern. Do not attribute the difference to an isoform without epitope evidence (HPA tissue IHC; UniProt Q86UP2).

Source: UniProt Q86UP2 Human Protein Atlas tissue Human Protein Atlas subcellular

Experiment evidence

IHC & IF images showing KTN1 staining

IHC analysis of Kinectin 1/KTN1 using anti-Kinectin 1/KTN1 antibody (A05071-1). Kinectin 1/KTN1 was detected in a paraffin-embedded section of human spleen tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 2 μg/ml rabbit anti-Kinectin 1/KTN1 Antibody (A05071-1) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC) (Catalog # SA1022) with DAB as the chromogen.

A05071-1 · IHCIHC analysis of Kinectin 1/KTN1 using anti-Kinectin 1/KTN1 antibody (A05071-1). Kinectin 1/KTN1 was detected in a paraffin-embedded section

IF analysis of Kinectin 1/KTN1 using anti-Kinectin 1/KTN1 antibody (A05071-1). Kinectin 1/KTN1 was detected in an immunocytochemical section of HEP3B cells. Enzyme antigen retrieval was performed using IHC enzyme antigen retrieval reagent (AR0022) for 15 mins. The cells were blocked with 10% goat serum. And then incubated with 5 μg/mL rabbit anti-Kinectin 1/KTN1 Antibody (A05071-1) overnight at 4°C. DyLight®488 Conjugated Goat Anti-Rabbit IgG (BA1127) was used as secondary antibody at 1:100 dilution and incubated for 30 minutes at 37°C. The section was counterstained with DAPI. Visualize using a fluorescence microscope and filter sets appropriate for the label used.

A05071-1 · IFIF analysis of Kinectin 1/KTN1 using anti-Kinectin 1/KTN1 antibody (A05071-1). Kinectin 1/KTN1 was detected in an immunocytochemical section

HPA · Cerebral cortexHuman Protein Atlas IHC, Cerebral cortex. Source: https://www.proteinatlas.org/ENSG00000126777-KTN1/tissue/cerebral+cortex#imid_5475328

HPA · ColonHuman Protein Atlas IHC, Colon. Source: https://www.proteinatlas.org/ENSG00000126777-KTN1/tissue/colon#imid_5475238

HPA · LiverHuman Protein Atlas IHC, Liver. Source: https://www.proteinatlas.org/ENSG00000126777-KTN1/tissue/liver#imid_5475255

HPA · KidneyHuman Protein Atlas IHC, Kidney. Source: https://www.proteinatlas.org/ENSG00000126777-KTN1/tissue/kidney#imid_5475248

HPA · ICC-IF A-431Human Protein Atlas immunofluorescence, A-431, antibody CAB015331; green = KTN1, blue = nucleus, red = microtubules.

← swipe / scroll for more images →

Real IHC / IF data behind the staining-pattern expectations in this section.

Sample controls for KTN1 IHC & IF

🧪Run adrenal gland first and score staining in glandular cells (HPA: High in adrenal gland glandular cells). HPA lists no negative tissue and detects KTN1 in all 45 scored tissues, so no-primary and isotype controls carry the negative; no cell population on the positive slide is established as KTN1-negative, and staining outside the glandular compartment should be interpreted against those controls (HPA: no negative rows).

Positive control tissue: Adrenal gland (Glandular cells, HPA High)

Negative control tissue: None in HPA: KTN1 is detected in all 45 scored tissues. Use a no-primary (secondary-only) and an isotype control instead.

ICC-IF cell lines (HPA subcellular resource): HPA ICC-IF images show KTN1 in A-431, U-251MG, U2OS, with annotated localisation: Endoplasmic reticulum (enhanced) (HPA subcellular).

Technical controls: Use a no-primary, secondary-only section and a matched nonimmune rabbit IgG isotype control, reflecting the rabbit catalog antibody (selected-SKU tissue-IHC caption); a matched KTN1 knockout sample would provide a biological negative if available. Quench endogenous peroxidase and check endogenous biotin background when using the caption’s streptavidin–biotin/DAB detection (selected-SKU tissue-IHC caption).

⚠️Feasibility: A target-specific fixation window or fixation effect is unreported, and the selected-SKU paraffin-section caption does not state a fixative (selected-SKU tissue-IHC caption). Heat retrieval in EDTA at pH 8.0 is reported for spleen IHC, but a retrieval dependency has not been established (selected-SKU tissue-IHC caption). Frozen-section performance is unreported; ICC-IF images support an ER-localization check, without establishing that IF is easier (HPA: endoplasmic reticulum, enhanced; ICC-IF images in A-431, U-251MG and U2OS).

HPA tissue IHC evidence for KTN1

Comprehensive Human Protein Atlas IHC scoring per tissue (reliability: Enhanced — Medium 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.

Positive expression · recommended positive controls

Tissue	Cell type	Level	Evidence	Source
Adrenal gland	Glandular cells	High	Protein (IHC)	HPA →
Appendix	Glandular cells	High	Protein (IHC)	HPA →
Bone marrow	Hematopoietic cells	High	Protein (IHC)	HPA →
Breast	Glandular cells	High	Protein (IHC)	HPA →
Bronchus	Respiratory epithelial cells	High	Protein (IHC)	HPA →

Undetected expression · recommended negative controls

Tissue	Cell type	Level	Evidence	Source
None in HPA: KTN1 is detected in all 45 scored tissues. Use a no-primary (secondary-only) and an isotype control instead.

Section 3

Advanced KTN1 IHC Tips

These troubleshooting checks center on paraffin-section, chromogenic KTN1 IHC and its expected endoplasmic reticulum staining (UniProt Q86UP2; HPA tissue IHC).

Which antigen retrieval should I try first for KTN1 in paraffin sections?

Use heat-mediated antigen retrieval in EDTA at pH 8.0 for KTN1 IHC in paraffin sections (datasheet A05071-1). The selected spleen image used this retrieval before 10% goat-serum blocking and 2 μg/ml primary antibody overnight at 4°C (datasheet A05071-1). If staining is weak, compare modest changes in heating duration on adjacent sections while holding antibody concentration and detection constant (general IHC practice). Check that tissue morphology and the expected cytoplasmic pattern remain intact, since stronger color alone does not establish specific staining (HPA tissue IHC; general IHC practice). Record the retrieval conditions alongside each comparison so the effect of heating can be distinguished from section variability (general IHC practice).

Could fixation explain weak or uneven KTN1 staining?

The selected KTN1 spleen caption identifies a paraffin-embedded section but does not state its fixative, so target-specific fixation sensitivity is unknown (datasheet A05071-1). Record the fixative, fixation duration, processing history, and section age for each specimen before comparing staining intensity (general IHC practice). Compare sections processed alike using the documented EDTA pH 8.0 retrieval and 2 μg/ml primary antibody conditions (datasheet A05071-1; general IHC practice). If an affected block stains poorly while a similarly processed control stains as expected, investigate specimen handling and preservation before changing the antibody conditions (general IHC practice). Do not infer a fixation effect from KTN1 topology or tissue-expression patterns alone (UniProt Q86UP2 topology; HPA tissue IHC).

Where should convincing KTN1 staining appear within cells?

Assess KTN1 as predominantly cytoplasmic staining in tissue sections, consistent with its endoplasmic reticulum localisation (HPA tissue IHC; HPA subcellular; UniProt Q86UP2). A membranous or perinuclear cytoplasmic distribution is plausible for this endoplasmic reticulum membrane protein, but morphology and the chromogenic method may limit resolution of individual membranes (UniProt Q86UP2; general IHC practice). Compare intact cells in the stained section with the expected cell populations rather than interpreting isolated dark deposits (HPA tissue IHC; general IHC practice). HPA reports high staining in bone-marrow hematopoietic cells and low staining in heart-muscle cardiomyocytes, which can inform tissue comparisons without replacing a matched control (HPA tissue IHC). Predominantly nuclear signal warrants a specificity and background check (HPA subcellular; general IHC practice).

How could the antibody epitope affect KTN1 IHC interpretation?

KTN1 has 4 annotated isoforms, so establish which sequence the catalog antibody recognises before interpreting a negative section as absence of every isoform (UniProt Q86UP2). The annotated transmembrane segment spans residues 7–29, with residues 30–1357 lumenal; epitope position therefore matters when considering accessibility (UniProt Q86UP2 topology). KTN1 also has 8 annotated glycosylation sites and several modified residues, but the supplied evidence does not show whether these alter this antibody’s tissue staining (UniProt Q86UP2). Compare staining across similarly processed sections under the documented EDTA pH 8.0 retrieval conditions before assigning differences to isoform expression (datasheet A05071-1; general IHC practice). Record the immunogen or mapped epitope if available, and keep isoform-level conclusions conditional until it is known (general IHC practice).

How can IF help check an ambiguous chromogenic KTN1 pattern?

Use IF as a separate localisation check for an ambiguous IHC pattern, since KTN1 is assigned to the endoplasmic reticulum by subcellular evidence (HPA subcellular; UniProt Q86UP2). Multiplex KTN1 with a marker for the expected cell type, then assess whether signal lies within those cells rather than in adjacent tissue (HPA tissue IHC; general IF practice). Choose spectrally distinct fluorophores and inspect unstained tissue channels to avoid mistaking tissue autofluorescence for KTN1 signal (general IF practice). Plan permeabilisation around the mapped epitope: access to residues 30–1357 would require access to the annotated lumenal side of the membrane, whereas residues 1–6 are annotated cytoplasmic (UniProt Q86UP2 topology; general IF practice). Optimise IF conditions independently of the paraffin-section IHC caption (datasheet A05071-1; general IF practice).

What should I adjust when KTN1 DAB staining is diffuse or widespread?

First compare the stained section with a no-primary control to identify signal arising from detection reagents or tissue rather than the KTN1 antibody (general IHC practice). The documented spleen workflow used 10% goat serum, 2 μg/ml primary antibody overnight at 4°C, and a biotin-based DAB detection system (datasheet A05071-1). Check blocking, washes, endogenous peroxidase blocking, and endogenous biotin effects where relevant to that detection system (datasheet A05071-1; general IHC practice). Reduce primary-antibody exposure only through controlled comparisons if background persists, while monitoring the expected cytoplasmic staining (HPA tissue IHC; general IHC practice). Widespread cytoplasmic staining alone is not proof of artefact because HPA describes KTN1 tissue expression as ubiquitous (HPA tissue IHC).

How should I score KTN1 staining across tissue samples? ⚠ ANSWER MARKED FOR VERIFICATION

Define the cell population and analysis region before scoring, then use an H-score for staining intensity and percentage of positive cells, or report percentage positive alone (general IHC practice). Where spatial distribution matters, count positive cells per mm² of viable tissue and report the measured viable area (general IHC practice). Normalise comparisons to the same cell type, tissue compartment, section quality, retrieval, antibody exposure, and image-acquisition settings (general IHC practice). The selected KTN1 protocol uses EDTA pH 8.0 retrieval and 2 μg/ml primary antibody; keep these constant across the series (datasheet A05071-1). Because HPA describes widespread cytoplasmic expression with cell-dependent intensity, report both the fraction stained and its distribution rather than a whole-section impression (HPA tissue IHC).

How do I distinguish true KTN1 signal from staining artefacts?

Favor staining in intact cell cytoplasm that fits KTN1’s endoplasmic reticulum localisation and the reported tissue pattern (UniProt Q86UP2; HPA subcellular; HPA tissue IHC). HPA reports high staining in appendix glandular cells and bone-marrow hematopoietic cells, but low staining in heart-muscle cardiomyocytes; identify the cell type before judging a field positive or negative (HPA tissue IHC). Treat predominantly nuclear deposits, stained section edges, and necrotic regions cautiously, and inspect a no-primary control for endogenous enzyme or detection-system signal (HPA subcellular; general IHC practice). Compare suspect fields with well-preserved regions under the documented EDTA pH 8.0 retrieval workflow (datasheet A05071-1; general IHC practice). Resolve persistent discrepancies with an independent specificity control before assigning biological meaning (general IHC practice).

Boster reagents

Best KTN1 / Kinectin IHC Antibodies

A05071-1 has IHC images from human spleen, tonsil and liver cancer paraffin sections and mouse brain paraffin sections, plus IF data from HEP3B cells (A05071-1 image captions).

Real IHC data

Anti-Kinectin 1/KTN1 Antibody ®

Cat # A05071-1

View product →

A05071-1 was demonstrated by IHC in paraffin sections of human spleen, tonsil and liver cancer and mouse brain (A05071-1 IHC image captions). The same SKU lists IF/ICC and shows IF staining in HEP3B cells (A05071-1 applications and IF image caption).

Which to pick: Choose A05071-1 for tissue IHC: its paraffin-section captions document EDTA retrieval at pH 8.0 and 2 μg/ml primary antibody; the fixative is unreported (A05071-1 IHC image captions). For IF/ICC, A05071-1 lists both applications and shows HEP3B staining at 5 μg/ml with DAPI counterstain (A05071-1 applications and IF image caption). For cross-species work, A05071-1 lists human, mouse, rat and monkey reactivity, but its IHC dilution guidance covers human, mouse and rat; no clone is reported (A05071-1 catalog reactivity, dilution guidance and clone field).

Each figure is that product's own IHC / IF validation image from its datasheet.

References

UniProt Consortium. UniProt entry Q86UP2 (KTN1_HUMAN, Kinectin).
Human Protein Atlas. KTN1 tissue IHC expression (reliability: Enhanced).
Human Protein Atlas. KTN1 subcellular location (ICC-IF): Localized to the endoplasmic reticulum..
Human Protein Atlas. KTN1 antibody validation summary (3 antibodies).
Yin Yang 1 promotes aggressive cell growth in high-grade breast cancer by directly transactivating kinectin 1. MedComm 2022 — PMC9253731.
The ER anchoring and abundance of the EEF1B complex is affected by tissue-specific alternative EEF1D splicing. Life science alliance 2026 — PMC13231004.
PubMed PMID:7787243 — UniProt-cited evidence.
PubMed PMID:8039706 — UniProt-cited evidence.
PubMed PMID:7584026 — UniProt-cited evidence.