** is a human gene whose product dNA Damage Regulated Autophagy Modulator 2 (DRAM2) is a lysosomal protein that plays a critical role in autophagy and cell survival under stress conditions. DRAM2 is a member of the DRAM (Damage-Regulated Autophagy Modulator) family, which includes DRAM1 and DRAM2, both involved in p53-mediated autophagy induction. Variants in have been implicated in [Alzheimer's Disease](/diseases/alzheimers-disease), Parkinson's Disease, Cancer. This page covers the gene's normal function, disease associations, expression patterns, and key research findings relevant to neurodegeneration.
Function
DNA Damage Regulated Autophagy Modulator 2 (DRAM2) is a lysosomal protein that plays a critical role in autophagy and cell survival under stress conditions. DRAM2 is a member of the DRAM (Damage-Regulated Autophagy Modulator) family, which includes DRAM1 and DRAM2, both involved in p53-mediated autophagy induction.
** is a human gene whose product dNA Damage Regulated Autophagy Modulator 2 (DRAM2) is a lysosomal protein that plays a critical role in autophagy and cell survival under stress conditions. DRAM2 is a member of the DRAM (Damage-Regulated Autophagy Modulator) family, which includes DRAM1 and DRAM2, both involved in p53-mediated autophagy induction. Variants in have been implicated in [Alzheimer's Disease](/diseases/alzheimers-disease), Parkinson's Disease, Cancer. This page covers the gene's normal function, disease associations, expression patterns, and key research findings relevant to neurodegeneration.
Function
DNA Damage Regulated Autophagy Modulator 2 (DRAM2) is a lysosomal protein that plays a critical role in autophagy and cell survival under stress conditions. DRAM2 is a member of the DRAM (Damage-Regulated Autophagy Modulator) family, which includes DRAM1 and DRAM2, both involved in p53-mediated autophagy induction.
Autophagy Regulation
DRAM2 functions as a positive regulator of autophagy by:
Promoting the formation of autophagosomes
Facilitating the recruitment of LC3 to autophagic vesicles
Operating downstream of p53 tumor suppressor protein
Contributing to mitophagy (mitochondrial autophagy)
Cellular Localization
DRAM2 is primarily localized to:
Lysosomal membranes
Late endosomes
Cytoplasmic vesicles
The protein contains multiple transmembrane domains that target it to lysosomal compartments.
Disease Associations
Alzheimer's Disease
DRAM2 expression is altered in Alzheimer's disease brains. The protein participates in:
Clearance of damaged proteins via autophagy
Mitochondrial quality control through mitophagy
Protection against [amyloid-beta](/proteins/amyloid-beta) toxicity
Parkinson's Disease
DRAM2 is implicated in Parkinson's disease through:
Mitophagy regulation - PINK1/PARKIN-mediated clearance of damaged mitochondria
Protection against dopaminergic neuron degeneration
Regulation of [alpha-synuclein](/proteins/alpha-synuclein) aggregation via autophagy
Cancer
While primarily studied in neurodegeneration, DRAM2 also has roles in:
p53-dependent [apoptosis](/entities/apoptosis)
Tumor cell survival under stress
Expression
DRAM2 exhibits broad expression across tissues:
Brain: Moderate expression in [cortex](/brain-regions/cortex), [hippocampus](/brain-regions/hippocampus), and cerebellum
Heart: High expression
Liver: Moderate expression
Skeletal muscle: Low expression
In the brain, DRAM2 is expressed in [neurons](/entities/neurons) and glial cells, with elevated expression under cellular stress conditions.
Therapeutic Implications
DRAM2 represents a potential therapeutic target for:
Neurodegenerative diseases with autophagy defects
Mitochondrial dysfunction in PD
Enhancing cellular clearance mechanisms
Small molecules that upregulate DRAM2 expression may promote autophagy and protect against neurodegeneration.