Recombinant Human FGF21 protein

• Cat.No.: FGF21-562H
• Product Overview: Recombinant Human FGF21 protein was expressed in Escherichia coli.

Specification

• Description: Fibroblast growth factor-21 (FGF-21) belongs to the large FGF family which is encoded by the FGF-21 gene and it is specifically induced by HMGCS2 activity. All FGF family members are heparin binding growth factors with a core 120 amino acid (a.a.) FGF domain that allows for a common tertiary structure and they are involved in a variety of biological processes including embryonic development, cell growth, morphogenesis, tissue repair, tumor growth and invasion. FGF-21 stimulates glucose uptake in differentiated adipocytes via the induction of glucose transporter SLC2A1/GLUT1 expression (but not SLC2A4/GLUT4 expression) and the activity depends on the presence of KLB. FGF-21 contains a 28 a.a. signal sequence and a 181 a.a. mature region but show limited binding to heparin. In addition, Mature human FGF-21 respectively shows 81 % a.a. identity to murine and rat FGF-21, and is known to be active on murine cells.
• Source: E.coli
• Species: Human
• Form: Lyophilized from a 0.2μm filtered concentrated solution in PBS, pH 7.4.
• Bio-activity: Fully biologically active when compared to standard. The ED50 as determined by thymidine uptake assay using FGF-receptors transfected BaF3 cells is less than 0.5 μg/ml, corresponding to a specific activity of > 2.0 × 10³ IU/mg in the presence of 5 µg/ml of rMuKlotho-β and 10 μg/ml of heparin.
• Molecular Mass: Approximately 19.4 kDa, a single non-glycosylated polypeptide chain containing 181 amino acids.
• Protein length: 181
• AA Sequence: HPIPDSSPLLQFGGQVRQRYLYTDD AQQTEAHLEIREDGTVGGAADQSPE SLLQLKALKPGVIQILGVKTSRFLC QRPDGALYGSLHFDPEACSFRELLL EDGYNVYQSEAHGLPLHLPGNKSPH RDPAPRGPARFLPLPGLPPALPEPP GILAPQPPDVGSSDPLSMVGPSQGR SPSYAS
• Endotoxin: Less than 1 EU/µg of rHuFGF-21 as determined by LAL method.
• Purity: >96% by SDS-PAGE and HPLC analysis.
• Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 centigrade as supplied. 1 month, 2 to 8 centigrade under sterile conditions after reconstitution. 3 months, -20 to -70 centigrade under sterile conditions after reconstitution.
• Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤-20 centigrade. Further dilutions should be made in appropriate buffered solutions.
• Tag: Non

Gene Information

• Gene Name: FGF21
• Official Symbol: FGF21
• Synonyms: FGF21; fibroblast growth factor 21; FGF-21
• Gene ID: 26291
• mRNA Refseq: NM_019113
• Protein Refseq: NP_061986
• MIM: 609436
• UniProt ID: Q9NSA1

Reviews

01/04/2022

The manufacturer's history of producing high-quality products contributed to our trust in this protein.

06/27/2021

Collaboration with other research groups was made easier by the product's standardized use in the scientific community.

03/03/2016

The product's role in promoting collaboration and teamwork positively impacted the quality of our research.

Q&As

How is FGF21 expression regulated in adipose tissue?

FGF21 expression in adipose tissue is regulated by various factors, including peroxisome proliferator-activated receptor gamma (PPARγ) activation.

What are the effects of FGF21 on lipid metabolism?

FGF21 influences lipid metabolism by promoting the utilization of fatty acids for energy, contributing to the regulation of lipid homeostasis.

Can FGF21 be a biomarker for metabolic health?

FGF21 levels are being explored as potential biomarkers for metabolic health, reflecting conditions such as insulin resistance and metabolic syndrome.

Is FGF21 involved in the regulation of insulin sensitivity?

Yes, FGF21 plays a role in improving insulin sensitivity, making it a potential target for interventions in insulin resistance-associated conditions.

Does FGF21 have roles in energy expenditure?

Yes, FGF21 influences energy expenditure by promoting thermogenesis in brown adipose tissue, contributing to overall metabolic regulation.

Are there gender-specific differences in FGF21 levels?

Gender-specific differences in FGF21 levels have been reported, with some studies suggesting higher circulating FGF21 concentrations in females.

What signaling pathways does FGF21 activate?

FGF21 activates signaling pathways such as the AMP-activated protein kinase (AMPK) pathway, which contributes to its metabolic effects.