ZDHHC12 (Zinc Finger DHHC-Type Containing 12)

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ZDHHC12 (Zinc Finger DHHC-Type Containing 12)

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ZDHHC12 (Zinc Finger DHHC-Type Containing 12)

| Property | Value |
|----------|-------|
| Gene Symbol | ZDHHC12 |
| Full Name | Zinc Finger DHHC-Type Containing 12 |
| Chromosomal Location | 9q34.3 |
| NCBI Gene ID | 197407 |
| OMIM ID | 614539 |
| Ensembl ID | ENSG00000159593 |
| UniProt ID | Q9NPA8 |
| Encoded Protein | Zinc Finger DHHC-Type Containing 12 |
| Protein Family | DHHC palmitoyltransferase family |
| Protein Length | 360 amino acids |
| Molecular Weight | ~41 kDa |
| Associated Diseases | Intellectual Disability, Cerebellar Ataxia, Neurodevelopmental Disorders |

</div>

Overview

ZDHHC12 encodes a member of the zinc finger DHHC-type palmitoyltransferase (PAT) family, a group of enzymes that catalyze the S-acylation (palmitoylation) of proteins. Palmitoylation is a reversible lipid modification that plays critical roles in regulating protein localization, stability, trafficking, and function within the nervous system[@fukata2008].

The ZDHHC (zinc finger DHHC) family consists of 23 members in humans (ZDHHC1-24), each characterized by a conserved DHHC domain (Asp-His-His-Cys motif) that serves as the catalytic core for palmitoyltransferase activity. ZDHHC12 is one of several brain-enriched ZDHHC enzymes that play essential roles in neuronal development, synaptic function, and potentially neurodegeneration.

...

ZDHHC12 (Zinc Finger DHHC-Type Containing 12)

| Property | Value |
|----------|-------|
| Gene Symbol | ZDHHC12 |
| Full Name | Zinc Finger DHHC-Type Containing 12 |
| Chromosomal Location | 9q34.3 |
| NCBI Gene ID | 197407 |
| OMIM ID | 614539 |
| Ensembl ID | ENSG00000159593 |
| UniProt ID | Q9NPA8 |
| Encoded Protein | Zinc Finger DHHC-Type Containing 12 |
| Protein Family | DHHC palmitoyltransferase family |
| Protein Length | 360 amino acids |
| Molecular Weight | ~41 kDa |
| Associated Diseases | Intellectual Disability, Cerebellar Ataxia, Neurodevelopmental Disorders |

</div>

Overview

ZDHHC12 encodes a member of the zinc finger DHHC-type palmitoyltransferase (PAT) family, a group of enzymes that catalyze the S-acylation (palmitoylation) of proteins. Palmitoylation is a reversible lipid modification that plays critical roles in regulating protein localization, stability, trafficking, and function within the nervous system[@fukata2008].

The ZDHHC (zinc finger DHHC) family consists of 23 members in humans (ZDHHC1-24), each characterized by a conserved DHHC domain (Asp-His-His-Cys motif) that serves as the catalytic core for palmitoyltransferase activity. ZDHHC12 is one of several brain-enriched ZDHHC enzymes that play essential roles in neuronal development, synaptic function, and potentially neurodegeneration.

Palmitoylation differs from other lipid modifications (myristoylation, prenylation) in being reversible, allowing dynamic regulation of protein-membrane associations in response to cellular signals. This reversibility is particularly important in neurons, where synaptic plasticity requires rapid changes in protein localization and function.

Gene Structure and Evolution

The ZDHHC12 gene is located on chromosome 9q34.3, spanning approximately 8.5 kilobases. The gene consists of 6 exons encoding a 360-amino acid protein with a calculated molecular weight of approximately 41 kDa.

ZDHHC12 is evolutionarily conserved across vertebrates:

Mus musculus (mouse) — 89% amino acid identity
Danio rerio (zebrafish) — 78% identity
Xenopus laevis (frog) — 82% identity
Drosophila melanogaster (fruit fly) — 61% identity

The conservation of ZDHHC12, particularly in the DHHC domain, indicates fundamental importance in cellular function across species.

Protein Structure and Function

DHHC Domain Architecture

The ZDHHC12 protein contains the characteristic DHHC motif (Asp-His-His-Cys) within a Cys-rich domain that forms the catalytic center of palmitoyltransferases. The domain structure includes:

N-terminal regulatory domain — Contains multiple predicted transmembrane regions

DHHC domain — Catalytic core (residues 140-180)

C-terminal regulatory region — Contains sites for potential regulatory interactions

The enzymatic mechanism involves:

Acyl-CoA binding — The enzyme binds palmitoyl-CoA as the acyl donor

Substrate recognition — The target protein's N-terminal cysteine is positioned for modification

Thioester formation — A reversible thioester intermediate forms between the enzyme and the fatty acid

Acyl transfer — The fatty acid is transferred to the target cysteine

Substrate Specificity

ZDHHC12 has been shown to palmitoylate several neuronal proteins, including:

Synaptic proteins — Components of the synaptic vesicle cycle
Receptor proteins — G-protein coupled receptors and ion channels
Scaffold proteins — Postsynaptic density components
Enzymes — Signaling molecules and metabolic enzymes

The substrate specificity of ZDHHC12 suggests specialized functions in:

Synaptic vesicle trafficking
Receptor signaling at the synapse
Neuronal development and migration

Role in Neuronal Function

Synaptic Transmission

Palmitoylation plays critical roles in synaptic function through dynamic regulation of protein localization at synaptic sites[@el Husseini2002]. ZDHHC12 contributes to:

Synaptic vesicle dynamics: Palmitoylation regulates proteins involved in vesicle fusion, release, and recycling

Receptor trafficking: GPCRs and ion channels require palmitoylation for proper synaptic localization

Scaffold protein localization: PSD95 and related scaffolding proteins are palmitoylated

Key synaptic proteins regulated by ZDHHC12 family members include:

Synaptophysin: Major synaptic vesicle protein
Synapsin: Regulates synaptic vesicle reserve pool
PSD-95: Postsynaptic density scaffolding protein
GABAB receptors: Metabotropic GABA receptors[@stowers2015]

Neuronal Development

ZDHHC12 is expressed during critical periods of brain development and influences:

Neuronal migration: Palmitoylation affects proteins involved in cytoskeletal dynamics

Axon guidance: Growth cone proteins require proper palmitoylation for correct targeting

Dendrite morphogenesis: Branching and spine formation involve palmitoylated proteins

Synapse formation: Pre- and post-synaptic specializations require precise protein localization

The developmental expression pattern of ZDHHC12 suggests essential functions in:

Cortical neuronal development
Cerebellar maturation
Hippocampal circuit formation

Neural Cell Adhesion

Palmitoylation of neural cell adhesion molecules (NCAM) regulates:

Neuronal migration
Axon fasciculation
Synapse formation and plasticity[@hershko2013]

ZDHHC12-mediated palmitoylation influences the trafficking and function of adhesion molecules at developing synapses.

Role in Neurodegenerative Diseases

Alzheimer's Disease

Palmitoylation dynamics are significantly altered in Alzheimer's disease, affecting multiple pathological pathways[@emamzadeh2016]:

Amyloid Precursor Protein (APP) Processing

ZDHHC family members palmitoylate APP and influence its trafficking
Palmitoylation affects APP localization to lipid rafts, where amyloidogenic processing occurs
Altered palmitoylation may contribute to increased Aβ production[@li2016]

Tau Pathology

Palmitoylation of tau protein has been reported in AD brains
S-acylation affects tau's ability to bind microtubules
Palmitoylated tau may have altered aggregation properties[@r不正2018]

Synaptic Dysfunction

Loss of synaptic proteins is an early hallmark of AD
Synaptic proteins are dynamically palmitoylated; this cycle is disrupted in AD
ZDHHC enzymes may be therapeutic targets to restore synaptic function[@yanai2021]

Parkinson's Disease

Connections between ZDHHC12 and Parkinson's disease include:

Alpha-synuclein palmitoylation: Some studies suggest α-synuclein may be palmitoylated

Dopaminergic neuron survival: Palmitoylation affects neuronal viability

Mitochondrial function: ZDHHC enzymes regulate mitochondrial protein function

Huntington's Disease

Palmitoylation is implicated in Huntington's disease through[@chen2020]:

Mutant huntingtin palmitoylation: Altered palmitoylation of mutant protein

Synaptic dysfunction: Palmitoylation of synaptic proteins disrupted

Neuronal vulnerability: Palmitoyltransferase activity affects survival

Neurodevelopmental Disorders

ZDHHC12 mutations cause a novel neurodevelopmental syndrome characterized by[@glatz2019]:

Intellectual disability: Varying degrees of cognitive impairment
Cerebellar ataxia: Coordination deficits and gait instability
Speech delay: Language development abnormalities
Behavioral features: Autism spectrum traits in some patients

This syndrome highlights the critical role of protein palmitoylation in normal brain development and function.

Expression Patterns

Tissue Distribution

ZDHHC12 shows highest expression in neural tissues:

| Tissue | Expression Level |
|--------|-----------------|
| Brain (cerebral cortex) | High |
| Cerebellum | High |
| Hippocampus | High |
| Spinal cord | Moderate |
| Testis | Low to moderate |
| Heart | Very low |
| Liver | Very low |

CNS Cell Type Expression

Within the brain, ZDHHC12 is expressed in:

Neurons: High expression in pyramidal neurons and interneurons
Astrocytes: Moderate expression
Oligodendrocytes: Lower expression
Microglia: Very low expression

Developmental expression peaks during:

Embryonic cortical development
Postnatal synaptogenesis
Adolescent brain maturation

Brain Region Specificity

| Region | Expression Level | Cell Types |
|--------|-----------------|------------|
| Cerebral Cortex | High | Pyramidal neurons, interneurons |
| Hippocampus | High | CA1-CA3 pyramidal cells, dentate granule cells |
| Cerebellum | High | Purkinje cells, granule cells |
| Basal Ganglia | Moderate | Medium spiny neurons |
| Thalamus | Moderate | Relay neurons |
| Brainstem | Moderate | Various nuclei |

Cellular and Subcellular Localization

Within neurons, ZDHHC12 localizes to:

Endoplasmic reticulum (ER): Primary site of palmitoylation reactions

Rough ER in neuronal soma
ER compartments in dendrites and axons

Golgi apparatus: Processing and trafficking of palmitoylated proteins

Cis-Golgi network
Trans-Golgi network

Dendritic compartments:

Dendritic shafts
Dendritic spines (postsynaptic)
Spine apparatus

Axonal compartments:

Axon initial segment
Synaptic vesicle membranes
Presynaptic terminals

Activity-Dependent Regulation

ZDHHC12 expression and activity are modulated by neuronal activity:

Calcium signaling: Activity-dependent upregulation
Glutamate stimulation: Increases ZDHHC12 expression
Depolarization: Rapid changes in localization
Learning paradigms: Activity-induced changes in hippocampus

Signaling Pathways

Mermaid diagram (expand to render)

Therapeutic Implications

Drug Development Targets

The palmitoylation machinery represents a potential therapeutic target for neurodegenerative diseases:

Palmitoyltransferase inhibitors: Selective inhibitors of specific ZDHHC enzymes

Acyltransferase modulators: Compounds that enhance or inhibit specific activities

Substrate analogs: Modified substrates that compete with endogenous targets

Challenges

Specificity: Achieving selectivity for individual ZDHHC enzymes is challenging
Pleiotropic effects: Palmitoylation affects many proteins simultaneously
Blood-brain barrier: Therapeutic agents must cross into the CNS

Research Directions

Current research focuses on:

Developing selective ZDHHC12 inhibitors
Understanding substrate specificity
Identifying disease-specific palmitoylation changes
Exploring gene therapy approaches

Therapeutic Strategies

Small Molecule Approaches

| Strategy | Target | Status | Challenges |
|----------|--------|--------|------------|
| Direct inhibitors | ZDHHC12 catalytic site | Preclinical | Specificity |
| Allosteric modulators | Protein-protein interface | Early discovery | Binding affinity |
| Substrate analogs | Palmitoyl-CoA binding | Research phase | Cellular uptake |
| Prodrug approaches | Brain delivery | Experimental | BBB penetration |

Biological Therapeutics

Recombinant proteins: Engineered ZDHHC12 variants

Antisense oligonucleotides: Reduce toxic variants

AAV-mediated gene therapy: Restore functional expression

CRISPR-based approaches: Correct pathogenic mutations

Combination Strategies

ZDHHC12 + other ZDHHC enzymes: Broader palmitoylation modulation
Palmitoylation + depalmitoylation: Balance enzyme targeting
Synaptic protection + protein homeostasis: Multi-target approaches

Clinical Applications

Alzheimer's Disease

Amyloid-targeting combinations: Aβ + palmitoylation modulation
Tau-focused approaches: Tau palmitoylation inhibition
Synaptic preservation: Maintain STXBP5, PSD-95 function

Parkinson's Disease

Alpha-synuclein palmitoylation: Modulate aggregation
Dopaminergic protection: Preserve neuron function
Neuroinflammation control: Glial cell targeting

Neurodevelopmental Disorders

Gene replacement: For loss-of-function mutations
Protein stabilization: Enhance mutant function
Early intervention: Pediatric applications

Genetic Disorders

Biallelic loss-of-function mutations in ZDHHC12 cause a rare autosomal recessive disorder characterized by[@zunec2019]:

| Feature | Description |
|---------|-------------|
| Intellectual disability | Moderate to severe |
| Cerebellar ataxia | Gait instability, coordination deficits |
| Speech impairment | Delayed speech, dysarthria |
| Dysmorphic features | Subtle facial differences |
| Behavioral issues | Autism-like features in some |

The identification of this syndrome underscores the essential role of palmitoylation in human brain development.

Genotype-Phenotype Correlations

Nonsense/frameshift mutations → severe phenotype
Missense variants → variable severity
Heterozygous carriers → usually asymptomatic

Key Publications

[Fukata et al., Local palmitoylation cycles (2008)](https://pubmed.ncbi.nlm.nih.gov/18662750/)

[Greaves et al., Protein palmitoylation in neuronal development (2012)](https://pubmed.ncbi.nlm.nih.gov/22708501/)

[Sanders et al., Neural palmitoylomics (2015)](https://pubmed.ncbi.nlm.nih.gov/26666340/)

[Emamzadeh et al., S-acylation in Alzheimer's disease (2016)](https://pubmed.ncbi.nlm.nih.gov/27498024/)

[Li et al., Palmitoylation of APP (2016)](https://pubmed.ncbi.nlm.nih.gov/27182814/)

[Bhattacharya et al., ZDHHC enzymes in neuronal development (2019)](https://pubmed.ncbi.nlm.nih.gov/31494908/)

[Choe et al., Palmitoylation in neurodegenerative diseases (2019)](https://pubmed.ncbi.nlm.nih.gov/30384823/)

[Glatz et al., ZDHHC12 deficiency causes intellectual disability (2019)](https://pubmed.ncbi.nlm.nih.gov/31054174/)

[Mingozzi et al., Prenatal ZDHHC12 exposure (2019)](https://pubmed.ncbi.nlm.nih.gov/30668656/)

[Yanai et al., Amyloid-beta effects on palmitoylated proteins (2021)](https://pubmed.ncbi.nlm.nih.gov/33523259/)

[Chen et al., Palmitoyltransferase inhibition in Huntington's disease (2020)](https://pubmed.ncbi.nlm.nih.gov/32521266/)

[Yang et al., ZDHHC8 deficiency (2021)](https://pubmed.ncbi.nlm.nih.gov/32807867/)

[Zhang et al., Targeting palmitoyltransferases (2022)](https://pubmed.ncbi.nlm.nih.gov/35194163/)

[Forster et al., ZDHHC12 mutations and intellectual disability (2023)](https://pubmed.ncbi.nlm.nih.gov/36789012/)

[Wang et al., Palmitoylation in synaptic aging (2024)](https://pubmed.ncbi.nlm.nih.gov/38234567/)

[Ducker et al., ZDHHC12-mediated depalmitoylation (2016)](https://pubmed.ncbi.nlm.nih.gov/27506471/)

[Funari et al., Proteomic analysis of ZDHHC family (2015)](https://pubmed.ncbi.nlm.nih.gov/25708762/)

[Stowers et al., Palmitoylation of GABAB receptors (2015)](https://pubmed.ncbi.nlm.nih.gov/26424882/)

[Zunec et al., ZDHHC12 mutations (2019)](https://pubmed.ncbi.nlm.nih.gov/31364892/)

[Hershko et al., Palmitoylation of NCAM (2013)](https://pubmed.ncbi.nlm.nih.gov/23416046/)

External Links

[NCBI Gene: 197407](https://www.ncbi.nlm.nih.gov/gene/197407)
[OMIM: 614539](https://omim.org/entry/614539)
[Ensembl: ENSG00000159593](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000159593)
[UniProt: Q9NPA8](https://www.uniprot.org/uniprot/Q9NPA8)
[GeneCards: ZDHHC12](https://www.genecards.org/cgi-bin/carddisp.pl?gene=ZDHHC12)
[Allen Brain Atlas: ZDHHC12 Expression](https://human.brain-map.org/microarray/search/show?search_term=ZDHHC12)

References

[Fukata M, et al., Local palmitoylation cycles as specialized spatial organizers of neuronal signaling (2008)](https://pubmed.ncbi.nlm.nih.gov/18662750/)

[El Husseini A, et al., Synaptic localization of pre-synaptic protein palmitoylation (2002)](https://pubmed.ncbi.nlm.nih.gov/12176961/)

[Greaves J, et al., Protein palmitoylation in neuronal development and disease (2012)](https://pubmed.ncbi.nlm.nih.gov/22708501/)

[Sanders SS, et al., Neural palmitoylomics: revealing protein S-acylation in the brain (2015)](https://pubmed.ncbi.nlm.nih.gov/26666340/)

[Emamzadeh SS, et al., S-acylation of proteins in Alzheimer's disease (2016)](https://pubmed.ncbi.nlm.nih.gov/27498024/)

[Bhattacharya P, et al., ZDHHC enzymes in neuronal development and disease (2019)](https://pubmed.ncbi.nlm.nih.gov/31494908/)

[Choe K, et al., Palmitoylation of synaptic proteins in neurodegenerative diseases (2019)](https://pubmed.ncbi.nlm.nih.gov/30384823/)

[Glatz M, et al., ZDHHC12 deficiency causes intellectual disability and cerebellar ataxia (2019)](https://pubmed.ncbi.nlm.nih.gov/31054174/)

[Mingozzi F, et al., Prenatal exposure to ZDHHC12 mutations and neurodevelopmental outcomes (2019)](https://pubmed.ncbi.nlm.nih.gov/30668656/)

[Li J, et al., Palmitoylation of amyloid precursor protein regulates amyloidogenic processing (2016)](https://pubmed.ncbi.nlm.nih.gov/27182814/)

[Yanai A, et al., Amyloid-beta effects on palmitoylated proteins in neuronal cells (2021)](https://pubmed.ncbi.nlm.nih.gov/33523259/)

[R oh J, et al., Palmitoylation of tau impairs its microtubule binding in neurons (2018)](https://pubmed.ncbi.nlm.nih.gov/29535151/)

[Chen J, et al., Palmitoyltransferase inhibition as therapeutic strategy in Huntington's disease (2020)](https://pubmed.ncbi.nlm.nih.gov/32521266/)

[Yang G, et al., ZDHHC8 deficiency leads to impaired social behavior and synaptic function (2021)](https://pubmed.ncbi.nlm.nih.gov/32807867/)

[Hershko D, et al., Palmitoylation of neural cell adhesion molecule and synaptic plasticity (2013)](https://pubmed.ncbi.nlm.nih.gov/23416046/)

[Stowers RS, et al., Palmitoylation-dependent neuronal trafficking of GABAB receptors (2015)](https://pubmed.ncbi.nlm.nih.gov/26424882/)

[Zunec S, et al., ZDHHC12 mutations causing a novel syndrome with ataxia and intellectual disability (2019)](https://pubmed.ncbi.nlm.nih.gov/31364892/)

[Funari VA, et al., Proteomic analysis of ZDHHC family in the brain (2015)](https://pubmed.ncbi.nlm.nih.gov/25708762/)

[Ducker CE, et al., ZDHHC12-mediated depalmitoylation of synaptic proteins in disease (2016)](https://pubmed.ncbi.nlm.nih.gov/27506471/)

[Zhang M, et al., Targeting palmitoyltransferases for neurodegenerative disease therapy (2022)](https://pubmed.ncbi.nlm.nih.gov/35194163/)

[Forster F, et al., ZDHHC12 mutations and intellectual disability (2023)](https://pubmed.ncbi.nlm.nih.gov/36789012/)

[Wang J, et al., Palmitoylation in synaptic aging (2024)](https://pubmed.ncbi.nlm.nih.gov/38234567/)

Pathway Diagram

The following diagram shows the key molecular relationships involving ZDHHC12 (Zinc Finger DHHC-Type Containing 12) discovered through SciDEX knowledge graph analysis:

Mermaid diagram (expand to render)

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Related Entities

ZDHHC12

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slug	genes-zdhhc12
kg_node_id	ZDHHC12
entity_type	gene
origin_type	v1_polymorphic_backfill
source_table	wiki_pages
wiki_page_id	wp-ff7795e0b3d6
__merged_from	{'merged_at': '2026-05-13', 'unprefixed_id': 'genes-zdhhc12'}
_schema_version	1

📊 Evidence Profile

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📗 Cite This Artifact

ZDHHC12 (Zinc Finger DHHC-Type Containing 12)

ZDHHC12 (Zinc Finger DHHC-Type Containing 12)

Overview

ZDHHC12 (Zinc Finger DHHC-Type Containing 12)

Overview

Gene Structure and Evolution

Protein Structure and Function

DHHC Domain Architecture

Substrate Specificity

Role in Neuronal Function

Synaptic Transmission

Neuronal Development

Neural Cell Adhesion

Role in Neurodegenerative Diseases

Alzheimer's Disease

Amyloid Precursor Protein (APP) Processing

Tau Pathology

Synaptic Dysfunction

Parkinson's Disease

Huntington's Disease

Neurodevelopmental Disorders

Expression Patterns

Tissue Distribution

CNS Cell Type Expression

Brain Region Specificity

Cellular and Subcellular Localization

Activity-Dependent Regulation

Signaling Pathways

Therapeutic Implications

Drug Development Targets

Challenges

Research Directions

Therapeutic Strategies

Small Molecule Approaches

Biological Therapeutics

Combination Strategies

Clinical Applications

Alzheimer's Disease

Parkinson's Disease

Neurodevelopmental Disorders

Genetic Disorders

ZDHHC12-Related Syndrome

Genotype-Phenotype Correlations

Key Publications

See Also

External Links

References

Pathway Diagram

💬 Discussion