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AIF-1/Iba1 Antibody

Catalog # NBP2-19019 | Novus Biologicals a Bio-Techne Brand
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Key Product Details

Species Reactivity

Human, Mouse, Rat, Monkey


Flow Cytometry, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry Free-Floating, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin, Simple Western, Western Blot



Antibody Source

Polyclonal Rabbit IgG


Concentrations vary lot to lot. See vial label for concentration. If unlisted please contact technical services.

Product Summary for AIF-1/Iba1 Antibody


This AIF-1/Iba1 Antibody was developed against a carrier-protein conjugated synthetic peptide encompassing a sequence within the C-terminus region of human Iba1. The exact sequence is proprietary.

Predicted Species

Porcine (100%), Rhesus Macaque (100%). Backed by our 100% Guarantee.

Reactivity Notes

Monkey reactivity reported in scientific literature (PMID: 30657788).


pan-Microglia Marker







Theoretical MW

16.7 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Scientific Data Images for AIF-1/Iba1 Antibody

Western Blot: AIF-1/Iba1 Antibody [NBP2-19019] - Various 50 ug tissue extracts (Molecular weight: 16.7 KDa) were separated by 15% SDS-PAGE, and the membrane was blotted with AIF-1/Iba1 Antibody diluted at 1:1000. The HRP-conjugated anti-rabbit IgG antibody (NBP2-19301) was used to detect the primary antibody.
Immunocytochemistry/Immunofluorescence: AIF-1/Iba1 Antibody [NBP2-19019] - THP-1 cells were fixed in 4% paraformaldehyde at RT for 15 min.Green: AIF-1/Iba1 stained by AIF-1/Iba1 Antibody diluted at 1:500. Blue: Hoechst 33342 staining.
Immunohistochemistry-Paraffin: AIF-1/Iba1 Antibody [NBP2-19019] - Mouse fore brain. Iba1 antibody dilution: 1:500. Antigen Retrieval: Trilogy™ (EDTA based, pH 8.0) buffer, 15min

Applications for AIF-1/Iba1 Antibody

Recommended Usage

Flow Cytometry


Immunocytochemistry/ Immunofluorescence




Immunohistochemistry Free-Floating

-Assay dependent.





Simple Western

-Reported by an internal validation

Western Blot

Application Notes
Simple Western Separated by Size, antibody dilution of 1:50, detects a band at 25 kDa.
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Reviewed Applications

Read 4 reviews rated 3.8 using NBP2-19019 in the following applications:

Published Applications

Read 27 publications using NBP2-19019 in the following applications:

Formulation, Preparation, and Storage


Immunogen affinity purified


PBS, 1% BSA, 20% Glycerol (pH7)


0.025% Proclin 300


Concentrations vary lot to lot. See vial label for concentration. If unlisted please contact technical services.


The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Aliquot and store at -20C or -80C. Avoid freeze-thaw cycles.

Background: AIF-1/Iba1

Allograft inflammatory factor (AIF-1) or ionized calcium-binding adapter molecule 1 (Iba1) is a cytosolic actin binding protein containing a calcium binding domain (EF-hand) and inducible by cytokines and IFN-gamma (1). AIF-1 (theoretical molecular weight 17kDa) was first cloned from rat and human cardiac allografts and macrophage cell lines. In cardiac allografts, expression of AIF-1 was specifically associated with infiltrated mononuclear cells (2, 3). AIF-1 is constitutively expressed and inducible in macrophages and microglia. Iba1, microglia response factor (MRF-1) and daintain were independently cloned and identified in rat and human tissues and share complete sequence identity with AIF-1. Additionally, several AIF-1 splice variants have been identified including IRT-1, BART-1, G1 and Hara-1 (2).

Several cellular functions have been associated with AIF-1/Iba1 expression including cell growth, cell migration, actin bundling, membrane ruffling, and phagocytic activity (2, 4). Iba1 induces Rac signaling through a PLC-gamma dependent pathway (1). Rac, a member of the Rho family of small GTPases, localizes with Iba1 and F-actin in membrane ruffles and phagocytic cups and plays a role in microglia activation. AIF-1/Iba1 induction in macrophages and microglia occur in association with immunological inflammatory processes in various disease states including endometriosis, cerebral infarction and rheumatoid arthritis (5). Immunodetection of Iba1 through flow cytometry, immunohistochemical or immunocytochemical applications is commonly used for identification and analysis of microglia.


1. Imai, Y., & Kohsaka, S. (2002). Intracellular signaling in M-CSF-induced microglia activation: Role of Iba1. GLIA.

2. Deininger, M. H., Meyermann, R., & Schluesener, H. J. (2002). The allograft inflammatory factor-1 family of proteins. FEBS Letters.

3. Utans, U., Quist, W. C., Mcmanus, B. M., Wilson, J. E., Arceci, R. J., Wallace, A. F., & Russell, M. E. (1996). Allograft inflammatory factor-1: A cytokine-responsive macrophage molecule expressed in transplanted human hearts. Transplantation.

4. Franco-Bocanegra, McAuley, Nicoll, & Boche. (2019). Molecular Mechanisms of Microglial Motility: Changes in Ageing and Alzheimer's Disease. Cells.

5. Kimura, M., Kawahito, Y., Obayashi, H., Ohta, M., Hara, H., Adachi, T., ... Yoshikawa, T. (2007). A Critical Role for Allograft Inflammatory Factor-1 in the Pathogenesis of Rheumatoid Arthritis. The Journal of Immunology.

Long Name

Allograft Inflammatory Factor 1

Alternate Names


Entrez Gene IDs

199 (Human)

Gene Symbol


Product Documents for AIF-1/Iba1 Antibody

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Product Specific Notices for AIF-1/Iba1 Antibody

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.


FAQs for AIF-1/Iba1 Antibody

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  • Q: For  prepared antibody NBP2-19019, what is the corresponding  amino acid sequence?

    A: The AIF-1/Iba1 antibody (NBP2-19019) was generated using a carrier-protein conjugated synthetic peptide encompassing a sequence within the C-terminus region of human Iba1. The exact sequence is proprietary, but we can share that it is within aa 97-147 (Isoform 1) -  The full-length human form for this one is 147aa total. Using the exact sequence, there is 100% identity to -

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