LC3A Antibody - BSA Free

Novus Biologicals, part of Bio-Techne | Catalog # NBP1-78964

Novus Biologicals, part of Bio-Techne

Key Product Details

Species Reactivity

Human, Mouse, Rat, Porcine, Bovine, Primate

Applications

Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Paraffin, Western Blot

Label

Unconjugated

Antibody Source

Polyclonal Rabbit IgG

Format

BSA Free

Concentration

1.09 mg/ml

View all LC3A Antibodies »

Product Specifications

Immunogen

This LC3A Antibody was prepared from a synthetic peptide made to a C-terminal region of the human LC3 protein (within residues 50-120). [Swiss-Prot Q9H492].

Localization

Cytoplasm.

Specificity

This LC3I antibody specifically detects the cytosolic form of LC3 before it gets converted into LC3II during autophagy.

Clonality

Polyclonal

Host

Rabbit

Isotype

IgG

Scientific Data Images for LC3A Antibody - BSA Free

Western Blot: LC3A AntibodyBSA Free [NBP1-78964]

Western Blot: LC3A AntibodyBSA Free [NBP1-78964]

Western Blot: LC3A Antibody [NBP1-78964] - Analysis of LC3I in Neuro2A cell lysate.
Immunocytochemistry/ Immunofluorescence: LC3A Antibody - BSA Free [NBP1-78964]

Immunocytochemistry/ Immunofluorescence: LC3A Antibody - BSA Free [NBP1-78964]

Immunocytochemistry/Immunofluorescence: LC3A Antibody [NBP1-78964] - IF Confocal analysis of A549 cells using LC3I antibody (NBP1-78964, 1:5). An Alexa Fluor 488-conjugated Goat to rabbit IgG was used as secondary antibody (green). Actin filaments were labeled with Alexa Fluor 568 phalloidin (red). DAPI was used to stain the cell nuclei (blue).
Immunohistochemistry: LC3A Antibody - BSA Free [NBP1-78964]

Immunohistochemistry: LC3A Antibody - BSA Free [NBP1-78964]

Immunohistochemistry: LC3A Antibody [NBP1-78964] - Analysis of LC3I in mouse testis using DAB with hematoxylin counterstain.

Applications for LC3A Antibody - BSA Free

Application
Recommended Usage

Immunocytochemistry/ Immunofluorescence

1:75

Immunohistochemistry

1:400

Immunohistochemistry-Paraffin

1:400

Western Blot

1:1000
Application Notes
This LC3I antibody is useful for Western Blot, Immunocytochemistry/Immunofluorescence, and IHC-paraffin embedded sections. In Western Blot, a band is seen ~15kDa representing LC3I. In ICC/IF, observed staining showed inactivated LC3 throughout the cytoplasm of Neuro2a cells. In IHC-P, staining was observed in the cytoplasm of mouse testes tissue. Prior to immunostaining paraffin tissues, antigen retrieval with sodium citrate buffer (pH 6.0) is recommended.

Reviewed Applications

Read 1 review rated 5 using NBP1-78964 in the following applications:

Formulation, Preparation, and Storage

Purification

Immunogen affinity purified

Formulation

PBS and 30% Glycerol

Format

BSA Free

Preservative

0.05% Sodium Azide

Concentration

1.09 mg/ml

Shipping

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

Stability & Storage

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: LC3A

Human Microtubule-associated Protein 1A/1B Light Chain 3A (MAP1LC3A), also called LC3A for short, is a 121 amino acid (aa) protein with a theoretic molecular weight of ~14 kDa. LC3A belongs to the LC3 subfamily of Autophagy-related 8 (Atg8) proteins, which also includes LC3B and LC3C (1). The process of autophagy is the bulk degradation of proteins and organelles. Whether these three proteins have distinct roles in autophagy remains unclear, but they do have unique subcellular expression (2). Specifically, LC3A shows perinuclear and nuclear localization (2). The Atg8 family members share a similar structure of two amino-terminal alpha-helices and a ubiquitin-like core but are unique in aa sequence (1). LC3 utilizes a ubiquitin-like conjugation system to covalently bind to phosphatidylethanolamine (PE), also called lipidation, which is mediated by a series of steps (1, 3). Briefly, unprocessed, cytosolic LC3 (pro-LC3) is cleaved by the cysteine protease Atg4 to expose a c-terminal glycine (Gly) residue (LC3-I); the Gly is activated by E1-like enzyme Atg7, transferred to E2-like enzyme Atg3, and an E3-like complex facilitates the conjugation of LC3 with PE (LC3-II), incorporating it into the phagophore membrane during autophagosome formation (1, 3). The recruitment of LC3 to the phagophore is thought to mediate membrane elongation and closure (1, 3). Additionally, LC3 plays a role in recruiting cargo (protein aggregates, pathogens, and organelles) to autophagosomes and delivery for lysosomal degradation (1).

The process of autophagy is associated with a variety of diseases including neurodegenerative diseases, neuromuscular, tumorigenesis, and viral and bacterial infections (4). LC3 is a useful marker of autophagy in both healthy and diseased cells (4). Interestingly, LC3A has two variants (v1 and v2) which differ in N-terminal sequence due to the varying transcriptional start sites (5). One particular study found that LC3Av1, but not v2 or LC3B, was silenced in various cancer cell lines due to aberrant DNA methylation and re-expression of LC3Av1 in LC3Av1-silenced cells inhibited tumor growth, where overall findings suggest a possible tumor-suppressive role (5).

Alternative names for LC3A include Apg8, APG8a, ATG8E, Autophagy-related protein LC3 A, Autophagy-related ubiquitin-like modifier LC3 A, MAP1A/1B light chain 3 A, microtubule-associated proteins 1A/1B light chain 3, and MLP3A.

References

1. Shpilka, T., Weidberg, H., Pietrokovski, S., & Elazar, Z. (2011). Atg8: an autophagy-related ubiquitin-like protein family. Genome biology. https://doi.org/10.1186/gb-2011-12-7-226

2. Koukourakis, M. I., Kalamida, D., Giatromanolaki, A., Zois, C. E., Sivridis, E., Pouliliou, S., Mitrakas, A., Gatter, K. C., & Harris, A. L. (2015). Autophagosome Proteins LC3A, LC3B and LC3C Have Distinct Subcellular Distribution Kinetics and Expression in Cancer Cell Lines. PloS one. https://doi.org/10.1371/journal.pone.0137675

3. Weidberg, H., Shvets, E., & Elazar, Z. (2011). Biogenesis and cargo selectivity of autophagosomes. Annual review of biochemistry. https://doi.org/10.1146/annurev-biochem-052709-094552

4. Tanida, I., Ueno, T., & Kominami, E. (2004). LC3 conjugation system in mammalian autophagy. The international journal of biochemistry & cell biology. https://doi.org/10.1016/j.biocel.2004.05.009

5. Schaaf, M. B., Keulers, T. G., Vooijs, M. A., & Rouschop, K. M. (2016). LC3/GABARAP family proteins: autophagy-(un)related functions. FASEB journal : official publication of the Federation of American Societies for Experimental Biology. https://doi.org/10.1096/fj.201600698R

Long Name

Microtubule-associated Protein 1 Light Chain 3 alpha

Alternate Names

Apg8, APG8a, Apg8p3, ATG8E, LC3, MAP1ALC3, MAP1LC3A, MLP3A

Entrez Gene IDs

84557 (Human)

Gene Symbol

MAP1LC3A

UniProt

Q9H492

Additional LC3A Products

Product Documents for LC3A Antibody - BSA Free

Product Datasheets

Certificate of Analysis

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Product Specific Notices for LC3A Antibody - BSA Free

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.

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