YKL-HM140 | 价格

YKL-HM140-100μg / 询价

YKL-HM140-500μg / 询价

YKL-HM140-500μgx2 / 询价

Human YKL-40/CHI3L1 Protein

产品信息(Product Info)
表达区间及表达系统(Source)

Recombinant Human YKL-40/CHI3L1 Protein is expressed from HEK293 with His tag at the C-Terminus.
It contains Tyr22-Thr383 [Accession | P36222].

分子量大小(Molecular Weight)

The protein has a predicted MW of 41.6 kDa. Due to glycosylation, the protein migrates to 42-50 kDa based on Bis-Tris PAGE result.

纯度(Purity)

> 95% as determined by Bis-Tris PAGE
> 95% as determined by HPLC

内毒素(Endotoxin)

Less than 1EU per μg by the LAL method.

制剂(Formulation)

Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.

重构方法(Reconstitution)

Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.

存储(Storage)

-20 to -80°C for 12 months as supplied from date of receipt.
-80°C for 3 months after reconstitution.
Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.

产品数据(Assay Data)
Bis-Tris PAGE

Human YKL-40 on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.

SEC-HPLC

The purity of Human YKL-40 is greater than 95% as determined by SEC-HPLC.

ELISA Data

Immobilized Human YKL-40, His Tag at 2μg/ml (100μl/well) on the plate. Dose response curve for Anti-YKL-40 Antibody, hFc Tag with the EC50 of 38.2ng/ml determined by ELISA (QC Test).

背景(Background)

YKL-40 (also known as Chitinase 3-like 1) is a glycoprotein produced by inflammatory, cancer and stem cells. Its physiological role is not completely understood but YKL-40 is elevated in the brain and cerebrospinal fluid (CSF) in several neurological and neurodegenerative diseases associated with inflammatory processes. Yet the precise characterization of YKL-40 in dementia cases is missing. YKL-40 is a disease-specific marker of neuroinflammation showing its highest levels in prion diseases. Therefore, YKL-40 quantification might have a potential for application in the evaluation of therapeutic intervention in dementias with a neuroinflammatory component.

分子别名(Synonyms)

BRP39; CGP-39; GP-39; Chil1; ASRT7; FLJ38139; HC-gp39; YKL-40; YKL40; YYL-40; AW208766; CHI3L1; Chitinase 3 like 1

文献(References)

(1) Llorens F, Thüne K, Tahir W, Kanata E, Diaz-Lucena D, Xanthopoulos K, Kovatsi E, Pleschka C, Garcia-Esparcia P, Schmitz M, Ozbay D, Correia S, Correia Â, Milosevic I, Andréoletti O, Fernández-Borges N, Vorberg IM, Glatzel M, Sklaviadis T, Torres JM, Krasemann S, Sánchez-Valle R, Ferrer I, Zerr I. YKL-40 in the brain and cerebrospinal fluid of neurodegenerative dementias. Mol Neurodegener. 2017 Nov 10;12(1):83. doi: 10.1186/s13024-017-0226-4. PMID: 29126445; PMCID: PMC5681777.

Note: HPLC results always come from liquid protein, due to absorption peak interference of trehalose in lyophilized powder.