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Home >> Antibodies >> TESMIN Antibody / Testis-expressed metallothionein-like protein

TESMIN Antibody / Testis-expressed metallothionein-like protein (FY12682)

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Image FY12682 Adding 0.2 ml of distilled water will yield a concentration of 500 ug/ml 100 ug 449
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Immunohistochemical staining of TESMIN using anti-TESMIN antibody. TESMIN was detected in a paraffin-embedded section of rat testis 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 ug/ml rabbit anti-TESMIN antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Western blot analysis of TESMIN using anti-TESMIN antibody. Electrophoresis was performed on a 10% SDS-PAGE gel at 80V (Stacking gel) / 120V (Resolving gel) for 2 hours. Lane 1: human THP-1 whole cell lysates, Lane 2: human K562 whole cell lysates, Lane 3: human MCF-7 whole cell lysates, Lane 4: human HEL whole cell lysates, Lane 5: rat heart tissue lysates, Lane 6: mouse heart tissue lysates. After electrophoresis, proteins were transferred to a nitrocellulose membrane at 150 mA for 50-90 minutes. Blocked the membrane with 5% non-fat milk/TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-TESMIN antibody at 0.5 ug/ml overnight at 4oC, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:5000 for 1.5 hour at RT. The signal was developed using an ECL Plus Western Blotting Substrate. A dominant band is observed at ~50 kDa with additional nearby bands, consistent with reported isoforms and phosphorylation-dependent mobility relative to the ~55 kDa calculated mass.
Flow Cytometry analysis of MCF-7 cells using anti-TESMIN antibody. Overlay histogram showing MCF-7 cells stained with (Blue line). To facilitate intracellular staining, cells were fixed with 4% paraformaldehyde and permeabilized with permeabilization buffer. The cells were blocked with 10% normal goat serum. And then incubated with rabbit anti-TESMIN antibody (1 ug/million cells) for 30 min at 20oC. DyLight 488 conjugated goat anti-rabbit IgG (5-10 ug/million cells) was used as secondary antibody for 30 minutes at 20oC. Isotype control antibody (Green line) was rabbit IgG (1 ug/million cells) used under the same conditions. Unlabelled sample without incubation with primary antibody and secondary antibody (Red line) was used as a blank control.
Availability 1-2 days
Species Reactivity Human, Mouse, Rat
Format Lyophilized
Host Rabbit
Clonality Polyclonal (rabbit origin)
Isotype Rabbit IgG
Purity Immunogen affinity purified
Buffer Each vial contains 4 mg Trehalose, 0.9 mg NaCl, 0.2 mg Na2HPO4.
UniProt Q9Y4I5
Localization Nuclear, possible Cytoplasmic
Applications Western Blot : 0.25-0.5ug/ml
Immunohistochemistry : 2-5ug/ml
Flow Cytometry : 1-3ug/million cells
ELISA : 0.1-0.5ug/ml
Limitations This TESMIN antibody is available for research use only.
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Description

TESMIN antibody recognizes Testis-expressed metallothionein-like protein, a zinc-binding transcriptional regulator implicated in germ cell differentiation and metal ion homeostasis. Encoded by the TESMIN gene located on chromosome 7q31.2, the protein contains two cysteine-rich metallothionein-like motifs near its C-terminus, which allow coordination of zinc and other metal ions that influence DNA-binding and protein-protein interactions. TESMIN expression is highly enriched in developing male germ cells, particularly during spermatogenesis, where it plays an essential role in meiotic progression and chromatin condensation. The protein localizes to the nucleus in pachytene spermatocytes and translocates to the cytoplasm in later spermatogenic stages, suggesting a regulatory role that depends on developmental timing.

TESMIN was first identified as a testis-specific gene expressed in pre-meiotic and early meiotic cells. Functional studies have shown that TESMIN is required for the transition through meiosis I, as its absence results in germ cell arrest and infertility in animal models. The metallothionein-like domains of TESMIN are proposed to sequester or deliver metal ions that regulate transcriptional complexes important for germ cell gene expression. Recent evidence also indicates that TESMIN interacts with cell cycle regulators, including cyclins and CDKs, linking its activity to the control of meiotic chromosomal events. Because of its restricted expression in germ cells, TESMIN has become a valuable biomarker for testicular development and reproductive biology research.

Outside the testis, TESMIN expression has been reported at lower levels in tissues such as kidney and brain, where it may contribute to metal ion buffering and stress response. The protein's capacity to bind zinc and cadmium suggests a role in detoxification pathways similar to classical metallothioneins. However, its regulatory domains and nuclear shuttling distinguish it as a transcriptional cofactor rather than a simple metal-binding protein. The TESMIN antibody is therefore a critical reagent for studies exploring the intersection of metal ion signaling, transcriptional regulation, and gametogenesis. Researchers use this antibody in western blot, immunohistochemistry, and immunofluorescence to detect TESMIN expression in testicular tissue and cultured germ cells. Immunolabeling reveals both nuclear and cytoplasmic distribution patterns depending on the stage of germ cell maturation.

TESMIN expression is also relevant to toxicology, as heavy metal exposure alters its expression levels, indicating potential use as a biomarker of metal-induced stress. In addition, transcriptomic data show TESMIN upregulation in certain tumors, including testicular germ cell carcinoma and renal cancers, suggesting its participation in stress adaptation and metal-responsive gene networks. Functional characterization of TESMIN continues to uncover connections between ion regulation and genome stability, as zinc is a cofactor for numerous DNA-binding proteins and enzymes involved in chromatin remodeling. The TESMIN antibody enables detailed visualization and quantification of TESMIN under physiological and stress conditions, providing insights into male fertility, toxicology, and tumor biology. NSJ Bioreagents offers this antibody validated for specificity and reproducibility across multiple assay types.

Application Notes

Optimal dilution of the TESMIN antibody should be determined by the researcher.

Immunogen

E.coli-derived human TESMIN recombinant protein (Position: E14-E508) was used as the immunogen for the TESMIN antibody.

Storage

After reconstitution, the TESMIN antibody can be stored for up to one month at 4oC. For long-term, aliquot and store at -20oC. Avoid repeated freezing and thawing.

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