Revision 4

#26632

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Orders:

877-616-CELL (2355)

[email protected]

Support:

877-678-TECH (8324)

3 Trask Lane | Danvers | Massachusetts | 01923 | USA

For Research Use Only. Not for Use in Diagnostic Procedures.

Applications:
W, IF-IC, FC-FP

Reactivity:
H M R

Sensitivity:
Endogenous

MW (kDa):
14, 16

Source/Isotype:
Rabbit IgG

UniProt ID:
#Q9H0R8

Entrez-Gene Id:
23710

Product Usage Information

Application Dilution
Western Blotting 1:1000
Immunofluorescence (Immunocytochemistry) 1:200
Flow Cytometry (Fixed/Permeabilized) 1:100

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

For a carrier free (BSA and azide free) version of this product see product #37737.

Specificity/Sensitivity

GABARAPL1 (D5R9Y) XP® Rabbit mAb recognizes endogenous levels of total GABARAPL1 protein. This antibody does not cross react with other GABARAP family members.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the amino terminus of human GABARAPL1 protein.

Background

GABAA receptor associated protein (GABARAP) is an Atg8 family protein with a key role in autophagy, which was originally discovered as a protein associated with the GABAA receptor regulating receptor trafficking to the plasma membrane (1). Proteins in this family, including microtubule-associated protein light chain 3 (LC3) and GATE-16 (GABARAPL2), become incorporated into the autophagosomal membranes following autophagic stimuli such as starvation (2). Like the other family members, GABARAP is cleaved at its carboxyl terminus, which leads to conjugation by either of the phospholipids phosphatidylethanolamine or phosphatidylserine (3,4). This processing converts GABARAP from a type I to a type II membrane bound form involved in autophagosome biogenesis. Processing of GABARAP involves cleavage by Atg4 family members (5,6) followed by conjugation by the E1 and E2 like enzymes Atg7 and Atg3 (7,8). GABARAPL1/GEC1, a protein that is highly related to GABARAP, was identified as an estrogen inducible gene, and is also associated with autophagosomes (9-11).
Gamma-aminobutyric acid receptor-associated protein-like 1 (GABARAPL1) appears to be more highly expressed in the CNS as compared to other family members (12-14). Expression of GABARAPL1 is associated with prognosis of some cancers, including hepatocellular and breast cancer (15,16). Inhibition of GABARAPL1 expression in breast cancer cells attenuates autophagic flux, results in metabolic changes, and leads to cancer promoting activities (17).

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v BSA, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

W: Western Blotting IF-IC: Immunofluorescence (Immunocytochemistry) FC-FP: Flow Cytometry (Fixed/Permeabilized)

Cross-Reactivity Key

H: Human M: Mouse R: Rat

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

XP is a registered trademark of Cell Signaling Technology, Inc.

All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

Orders: 877-616-CELL (2355) [email protected] Support: 877-678-TECH (8324) [email protected] Web: cellsignal.com
For Research Use Only. Not for Use in Diagnostic Procedures.

Revision 4

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Western blot analysis of extracts from 293T cells, mock transfected (-) or transfected with constructs expressing Myc/DDK-tagged full-length human GABARAP protein (hGABARAP-Myc/DDK; +), human GABARAPL1 protein (hGABARAPL1-Myc/DDK; +), or human GABARAPL2 protein (hGABARAPL2-Myc/DDK; +) using GABARAPL1 (D5R9Y) XP® Rabbit mAb (upper) and β-Actin (D6A8) Rabbit mAb #8457 (lower).
Western Blotting Image 1: GABARAPL1 (D5R9Y) XP<sup>®</sup> Rabbit mAb
Western blot analysis of extracts from HeLa, C2C12, and C6 cells, untreated (-) or treated with chloroquine (50 μM, overnight; +), using GABARAPL1 (D5R9Y) XP® Rabbit mAb (upper) and β-Actin (D6A8) Rabbit mAb #8457 (lower).
Western Blotting Image 2: GABARAPL1 (D5R9Y) XP<sup>®</sup> Rabbit mAb
Confocal immunofluorescent analysis of HeLa cells, untreated (left) or treated with chloroquine (50 μM, 24 hr; right), using GABARAPL1 (D5R9Y) XP® Rabbit mAb (green) and β-Actin (8H10D10) Mouse mAb #3700 (red). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).
Immunofluorescence Image 1: GABARAPL1 (D5R9Y) XP<sup>®</sup> Rabbit mAb
Orders: 877-616-CELL (2355) [email protected] Support: 877-678-TECH (8324) [email protected] Web: cellsignal.com
For Research Use Only. Not for Use in Diagnostic Procedures.

Revision 4

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Flow cytometric analysis of HeLa cells using GABARAPL1 (D5R9Y) XP® Rabbit mAb (blue) compared to concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (red). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody.
Flow Cytometry Image 1: GABARAPL1 (D5R9Y) XP<sup>®</sup> Rabbit mAb
Orders: 877-616-CELL (2355) [email protected] Support: 877-678-TECH (8324) [email protected] Web: cellsignal.com
For Research Use Only. Not for Use in Diagnostic Procedures.