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AB219368

Anti-FGF21 antibody [EPR8314(2)] - Low endotoxin, Azide free

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(3 Publications)

Rabbit Recombinant Monoclonal FGF21 antibody. Carrier free. Suitable for IHC-P, WB and reacts with Mouse, Rat, Human samples. Cited in 3 publications.

View Alternative Names

UNQ3115/PRO10196, FGF21, Fibroblast growth factor 21, FGF-21

4 Images
Western blot - Anti-FGF21 antibody [EPR8314(2)] - Low endotoxin, Azide free (AB219368)
  • WB

Lab

Western blot - Anti-FGF21 antibody [EPR8314(2)] - Low endotoxin, Azide free (AB219368)

False colour image of Western blot : Anti-FGF21 antibody [EPR8314(2)] staining at 1/1000 dilution, shown in black; Mouse anti-GAPDH antibody [6C5] (ab8245) loading control staining at 1/20000 dilution, shown in red. In Western blot, ab171941 was shown to bind specifically to FGF21. A band was observed at 21 kDa in treated wild-type HeLa cell lysates with no signal observed at this size in FGF21 knockout cell line ab265974 (knockout cell lysate ab256915). To generate this image, wild-type and FGF21 knockout HeLa cell lysates were analysed. First, samples were run on an SDS-PAGE gel then transferred onto a nitrocellulose membrane. Membranes were blocked in 5 % milk in TBS-0.1 % Tween® 20 (TBS-T) before incubation with primary antibodies overnight at 4 °C. Blots were washed four times in TBS-T, incubated with secondary antibodies for 1 h at room temperature, washed again four times before development and with high-sensitivity chemiluminescence substrate and imaged with 16 minutes exposure time. Secondary antibodies used were HRP conjugated Goat anti-Rabbit (H+L) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preabsorbed at 1/20000 dilution.

All lanes:

Western blot - Anti-FGF21 antibody [EPR8314(2)] (<a href='/en-us/products/primary-antibodies/fgf21-antibody-epr83142-ab171941'>ab171941</a>) at 1/1000 dilution

Lane 1:

Wild-type HeLa Treated BFA (5 ug/mL, 6 h) cell lysate at 20 µg

Lane 2:

FGF21 knockout HeLa Treated BFA (5 ug/mL, 6 h) cell lysate at 20 µg

Lane 3:

Wild-type HeLa Vehicle Control BFA (0 ug/mL, 6 h) cell lysate at 20 µg

Lane 4:

FGF21 knockout HeLa Vehicle Control BFA (0 ug/mL, 6 h) cell lysate at 20 µg

Lane 5:

HepG2 Treated BFA (5 ug/mL, 6 h) cell lysate at 20 µg

Lane 6:

HepG2 cell lysate at 20 µg

Lane 7:

Empty

Lane 8:

Human Liver cell lysate at 10 µg

Secondary

All lanes:

HRP conjugated Goat anti-Rabbit (H+L) and Goat anti-Mouse IgG H&L (IRDye® 680RD) at 1/20000 dilution

Predicted band size: 22 kDa

Observed band size: 21 kDa

false

Western blot - Anti-FGF21 antibody [EPR8314(2)] - Low endotoxin, Azide free (AB219368)
  • WB

Unknown

Western blot - Anti-FGF21 antibody [EPR8314(2)] - Low endotoxin, Azide free (AB219368)

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab171941).

Blocking buffer : 5% NFDM/TBST

Dilution buffer : 5% NFDM/TBST

All lanes:

Human fetal liver tissue lysate at 20 µg

Secondary

All lanes:

HRP goat anti-rabbit (H+L) at 1/1000 dilution

Predicted band size: 22 kDa

false

Western blot - Anti-FGF21 antibody [EPR8314(2)] - Low endotoxin, Azide free (AB219368)
  • WB

Unknown

Western blot - Anti-FGF21 antibody [EPR8314(2)] - Low endotoxin, Azide free (AB219368)

Blocking buffer : 5% NFDM/TBST

Dilution buffer : 5% NFDM/TBST

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab171941).

All lanes:

Mouse spleen tissue lysate at 10 µg

Secondary

All lanes:

HRP goat anti-rabbit (H+L) at 1/1000 dilution

Predicted band size: 22 kDa

false

Western blot - Anti-FGF21 antibody [EPR8314(2)] - Low endotoxin, Azide free (AB219368)
  • WB

Unknown

Western blot - Anti-FGF21 antibody [EPR8314(2)] - Low endotoxin, Azide free (AB219368)

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab171941).

Blocking buffer : 5% NFDM/TBST

Dilution buffer : 5% NFDM/TBST

All lanes:

Rat spleen tissue lysate at 20 µg

Secondary

All lanes:

HRP goat anti-rabbit (H+L) at 1/1000 dilution

false

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR8314(2)

Isotype

IgG

Carrier free

Yes

Reacts with

Mouse, Rat, Human

Applications

IHC-P, WB

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Specificity

The immunogen used for this product shares 6 continuous identical amino acids with SIKE1. Cross-reactivity with this protein has not been confirmed experimentally.

Expression levels of the target protein vary with sample type and some optimisation may be required (PMID: 27285327). For western blot using cell lines, it may be necessary to collect cell culture supernatant for endogenous FGF21 detection as the target protein is readily secreted (PMID: 24041694; PMID: 26691139).

ab219368 is not recommended for mouse WB or human IHC-P.

Reactivity data

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Product details

ab219368 is the carrier-free version of ab171941.

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Conjugation ready
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.

Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with 1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

Compatibility
This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.

What does low endotoxin mean?
Our low endotoxin, azide-free formats have low endotoxin level (1 EU/mg, determined by the TAL assay) and are free from azide, to achieve consistent experimental results in functional assays.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Protein A
Storage buffer
pH: 7.2 - 7.4 Constituents: PBS
Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C
Storage information
Do Not Freeze

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

FGF21 or fibroblast growth factor 21 is an important metabolic regulator. It is a member of the fibroblast growth factor family but unlike many others FGF21 functions mainly in endocrine signaling. The molecular weight of FGF21 is approximately 22 kDa. This protein is expressed in tissues such as the liver adipose tissue and pancreas. Because of its endocrine roles FGF21 travels through the bloodstream to exert its functions on distant organs.
Biological function summary

FGF21 influences glucose and lipid metabolism. It does not act as part of a larger protein complex. Instead it directly affects metabolic processes enhancing insulin sensitivity and lipid oxidation while reducing body weight. These actions help maintain energy balance and homeostasis making FGF21 an important player in metabolic control.

Pathways

FGF21 plays a significant role in the insulin signaling pathway and PPARγ coactivator 1α (PGC-1α) pathway. These pathways regulate cellular energy metabolism and mitochondrial biogenesis respectively. FGF21 interacts with other molecules such as PPARα (peroxisome proliferator-activated receptor alpha) to exert its effects demonstrating its integration into broader metabolic networks. FGF21's interaction with these pathways highlights its function in energy utilization and storage.

FGF21 has connections to conditions such as obesity and type 2 diabetes. Its role in improving insulin sensitivity and promoting lipid oxidation makes it a molecule of interest in combating metabolic syndrome. FGF21 also has a relationship with hepatic proteins such as insulin receptor substrates (IRS) which play roles in liver functioning. Understanding these relationships offers insights into potential therapeutic strategies targeting metabolic disorders.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

Stimulates glucose uptake in differentiated adipocytes via the induction of glucose transporter SLC2A1/GLUT1 expression (but not SLC2A4/GLUT4 expression). Activity requires the presence of KLB. Regulates systemic glucose homeostasis and insulin sensitivity.
See full target information FGF21

Publications (3)

Recent publications for all applications. Explore the full list and refine your search

Journal of cellular physiology 236:1345-1361 PubMed32657446

2020

FGF21 impedes peripheral myelin development by stimulating p38 MAPK/c-Jun axis.

Applications

Unspecified application

Species

Unspecified reactive species

Yunzhong Zhang,Ketao Jiang,Guoqing Xie,Jie Ding,Su Peng,Xiaoyu Liu,Cheng Sun,Xin Tang

Food & nutrition research 60:31304 PubMed27616737

2016

Chronic leucine supplementation improves lipid metabolism in C57BL/6J mice fed with a high-fat/cholesterol diet.

Applications

WB

Species

Mouse

Jun Jiao,Shu-Fen Han,Wei Zhang,Jia-Ying Xu,Xing Tong,Xue-Bin Yin,Lin-Xi Yuan,Li-Qiang Qin

Cell reports 16:1903-14 PubMed27498874

2016

Increased 4E-BP1 Expression Protects against Diet-Induced Obesity and Insulin Resistance in Male Mice.

Applications

Unspecified application

Species

Unspecified reactive species

Shih-Yin Tsai,Ariana A Rodriguez,Somasish G Dastidar,Elizabeth Del Greco,Kaili Lia Carr,Joanna M Sitzmann,Emmeline C Academia,Christian Michael Viray,Lizbeth Leon Martinez,Brian Stephen Kaplowitz,Travis D Ashe,Albert R La Spada,Brian K Kennedy
View all publications

Product promise

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For full details, please see our Terms & Conditions

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