Recombinant Human LC3A Protein Standard (His tag) is a Human Fragment protein, expressed in Escherichia coli, with >=80% purity and suitable for sELISA, SDS-PAGE.
Images
Key facts
- Purity
- >=80% SDS-PAGE
- Expression system
- Escherichia coli
- Tags
- His tag C-Terminus
- Applications
- sELISA, SDS-PAGE
- Biologically active
- No
Reactivity data
| Application | Reactivity | Dilution info | Notes |
|---|---|---|---|
Application sELISA | Reactivity Reacts | Dilution info - | Notes - |
Application SDS-PAGE | Reactivity Reacts | Dilution info - | Notes - |
Target data
Function
Ubiquitin-like modifier involved in formation of autophagosomal vacuoles (autophagosomes) (PubMed:20713600, PubMed:24290141). While LC3s are involved in elongation of the phagophore membrane, the GABARAP/GATE-16 subfamily is essential for a later stage in autophagosome maturation (PubMed:20713600). Through its interaction with the reticulophagy receptor TEX264, participates in the remodeling of subdomains of the endoplasmic reticulum into autophagosomes upon nutrient stress, which then fuse with lysosomes for endoplasmic reticulum turnover (PubMed:31006537, PubMed:31006538).
Alternative names
Microtubule-associated proteins 1A/1B light chain 3A, Autophagy-related protein LC3 A, Autophagy-related ubiquitin-like modifier LC3 A, MAP1 light chain 3-like protein 1, MAP1A/MAP1B light chain 3 A, Microtubule-associated protein 1 light chain 3 alpha, MAP1A/MAP1B LC3 A, MAP1LC3A
Recombinant Human LC3A Protein Standard (His tag) is a Human Fragment protein, expressed in Escherichia coli, with >=80% purity and suitable for sELISA, SDS-PAGE.
Key facts
- Purity
- >=80% SDS-PAGE
- Expression system
- Escherichia coli
- Tags
- His tag C-Terminus
- Applications
- sELISA, SDS-PAGE
- Biologically active
- No
- Accession
- Q9H492-1
- Animal free
- Yes
- Species
- Human
- Concentration
- Storage buffer
pH: 7.3 - 7.5
Constituents: 12.6% Glycerol (glycerin, glycerine), 2.922% Sodium chloride, 1.742% L-Arginine, 0.64107% disodium;hydrogen phosphate;dodecahydrate, 0.02858% Potassium phosphate monobasic
Sequence info
Amino acid sequence
- Accession
- Q9H492
- Protein length
- Fragment
- Predicted molecular weight
- 15.6 kDa
- Nature
- Recombinant
- Tags
- His tag C-Terminus
Specifications
- Form
- Liquid
General info
- Function
Ubiquitin-like modifier involved in formation of autophagosomal vacuoles (autophagosomes) (PubMed:20713600, PubMed:24290141). While LC3s are involved in elongation of the phagophore membrane, the GABARAP/GATE-16 subfamily is essential for a later stage in autophagosome maturation (PubMed:20713600). Through its interaction with the reticulophagy receptor TEX264, participates in the remodeling of subdomains of the endoplasmic reticulum into autophagosomes upon nutrient stress, which then fuse with lysosomes for endoplasmic reticulum turnover (PubMed:31006537, PubMed:31006538).
- Sequence similarities
Belongs to the ATG8 family.
- Post-translational modifications
The precursor molecule is cleaved by ATG4 (ATG4A, ATG4B, ATG4C or ATG4D) to expose the glycine at the C-terminus and form the cytosolic form, LC3-I (PubMed:15187094, PubMed:30661429). The processed form is then activated by APG7L/ATG7, transferred to ATG3 and conjugated to phosphatidylethanolamine (PE) phospholipid to form the membrane-bound form, LC3-II (PubMed:15187094). During non-canonical autophagy, the processed form is conjugated to phosphatidylserine (PS) phospholipid (PubMed:33909989). ATG4 proteins also mediate the delipidation of PE-conjugated forms (PubMed:32686895, PubMed:33909989). In addition, ATG4B and ATG4D mediate delipidation of ATG8 proteins conjugated to PS during non-canonical autophagy (PubMed:33909989). ATG4B constitutes the major protein for proteolytic activation (PubMed:30661429, PubMed:33909989). ATG4D is the main enzyme for delipidation activity (By similarity).
- Subcellular localisation
- Cytoskeleton
Storage
- Shipped at conditions
- Dry Ice
- Appropriate short-term storage conditions
- -80°C
- Appropriate long-term storage conditions
- -80°C
- Aliquoting information
- Upon delivery aliquot
- Storage information
- Avoid freeze / thaw cycle
Notes
While the standard is the same as the one provided in the corresponding SimpleStep ELISA Kit, it cannot be treated as the consumable provided with our SimpleStep ELISA Kit due to differences in its concentration calibration.
Abcam guarantee that this protein standard is suitable for use in a sandwich ELISA. Individual results may vary due to differences in technique, laboratory equipment, buffers, and other experimental factors. The detection range provided for this protein standard is based on initial sandwich ELISA validation data.
The protein concentration is the concentration after validation on our sandwich ELISA platform. This Standard protein is guaranteed to work with our Capture and Detector antibodies in sELISA. Please contact our Scientific Support team to know which antibody pair is suitable for this protein.
Supplementary info
- This supplementary information is collated from multiple sources and compiled automatically.
- Activity summary
The protein LC3A also known as Microtubule-associated proteins 1A/1B light chain 3A plays an important role in the autophagy process. It exists in two forms LC3-I and LC3-II with the latter being lipidated and integrated into autophagosomal membranes. LC3A has a molecular mass of approximately 17 kDa. Researchers observe its expression in various tissues but most highly in muscle liver and brain. It is often studied along with LC3B due to their similar roles in autophagy.
- Biological function summary
LC3A participates in the formation of autophagosomes which are double-membraned vesicles that capture cellular waste for degradation. LC3A's conversion from LC3-I to LC3-II on the autophagosomal membrane signals the initiation of autophagy. It associates with proteins in the Atg family forming complexes that regulate the maturation of autophagosomes. The LC3 family including LC3A and LC3B acts as important components in the cell's ability to maintain homeostasis through autophagic activity.
- Pathways
LC3A plays a vital part in the autophagy pathway and is also linked to the mTOR signaling pathway. Autophagy is a process that helps with the recycling of cellular components and mTOR signaling inhibits autophagy when nutrients are abundant. LC3A's interactions with other proteins such as p62 and ULK1 are essential in modulating these processes and ensuring cell survival under stress conditions. LC3A and LC3B's roles are integral in coordinating the cellular response to nutrient status and stress highlighting their importance in cellular regulation.
- Associated diseases and disorders
LC3A has significant connections to cancer and neurodegenerative diseases. Altered autophagic activity where LC3A takes part appears in various forms of cancer indicating its role in tumor progression and apoptosis regulation. Additionally abnormal LC3A function has implications in disorders such as Alzheimer's disease where autophagic dysfunction leads to neurodegeneration. In these contexts LC3A's relationship with proteins like p62 which accumulate in neurodegenerative diseases provides insight into pathological mechanisms and potential therapeutic targets.
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2 product images
Sandwich ELISA - Recombinant Human LC3A Protein Standard (His tag) (ab316735)
Sandwich ELISA with the capture antibody dilution at 2 µg/mL and detector antibody dilution at 0.5 µg/mL.
SDS-PAGE - Recombinant Human LC3A Protein Standard (His tag) (ab316735)
SDS-PAGE analysis of ab316735 under reducing conditions for 2ug protein.
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