| 2004 |
HIP14 (ZDHHC17) is a neuronal palmitoyl acyltransferase (PAT) that palmitoylates SNAP-25, PSD-95, GAD65, synaptotagmin I, and huntingtin, but not paralemmin or synaptotagmin VII, demonstrating substrate specificity. Exogenous HIP14 enhances palmitoylation-dependent vesicular trafficking, and knockdown of endogenous HIP14 reduces clustering of PSD-95 and GAD65 in neurons. |
Biochemical palmitoylation assays, overexpression and siRNA knockdown in heterologous cells and neurons, vesicular trafficking assays |
Neuron |
High |
15603740
|
| 2002 |
HIP14 (ZDHHC17) localizes to the Golgi and cytoplasmic vesicles, and functionally rescues temperature-sensitive lethality and endocytosis defects in akr1Δ yeast, establishing a role for HIP14 in intracellular trafficking and endocytosis. Its interaction with huntingtin is inversely correlated with polyglutamine tract length. |
Yeast two-hybrid, subcellular localization (co-localization with Golgi markers), yeast complementation assay (rescue of akr1Δ phenotype) |
Human molecular genetics |
High |
12393793
|
| 2006 |
Huntingtin (htt) is palmitoylated at cysteine 214 by HIP14 (ZDHHC17), which is essential for htt trafficking and function. Polyglutamine expansion reduces htt-HIP14 interaction and htt palmitoylation. Palmitoylation-resistant htt (C214 mutant) accelerates inclusion formation and increases neuronal toxicity. HIP14 overexpression reduces inclusions, while HIP14 downregulation increases them. |
Metabolic palmitoylation labeling, site-directed mutagenesis of htt Cys214, siRNA knockdown, overexpression in mouse neurons, inclusion body quantification |
Nature neuroscience |
High |
16699508
|
| 2008 |
HIP14 (ZDHHC17) mediates electrogenic, voltage-dependent, saturable Mg2+ uptake when expressed in Xenopus oocytes (Km ~0.87 mM). Inhibition of palmitoylation (2-bromopalmitate) or deletion of the DHHC motif reduces HIP14-mediated Mg2+ transport by ~50%, suggesting autopalmitoylation regulates its Mg2+ transport function. HIP14 localizes to Golgi and sub-plasma membrane vesicles, with redistribution under low-Mg2+ conditions. |
Xenopus oocyte electrophysiology (Mg2+ uptake assays), DHHC deletion mutagenesis, GFP-fusion localization in transfected epithelial cells, 2-bromopalmitate pharmacological inhibition |
The Journal of biological chemistry |
Medium |
18794299
|
| 2011 |
Wild-type HTT modulates HIP14 (ZDHHC17) enzymatic activity: HTT itself is palmitoylated by HIP14, and wild-type HTT in turn potentiates HIP14-mediated palmitoylation of SNAP25 in vitro. In mice with reduced HTT (hdh+/- or HTT-ASO knockdown), HIP14 palmitoylation and the palmitoylation of its substrates SNAP25 and GluR1 are reduced in vivo. Among 23 DHHC PATs, HIP14 and HIP14L (DHHC13) are the two major PATs that palmitoylate HTT. |
In vitro palmitoylation assay, HTT antisense oligonucleotide knockdown in cortical neurons, brain biochemistry from hdh+/- mice, acyl-RAC/ABE palmitoylation assay |
Human molecular genetics |
High |
21636527
|
| 2011 |
Hip14 (ZDHHC17) knockout mice exhibit behavioral, biochemical, and neuropathological defects reminiscent of Huntington disease. Palmitoylation of HIP14 substrates (other than HTT itself) is reduced in Hip14−/− brains. HIP14 is dysfunctional in YAC128 (mutant HTT) mice, indicating mutant HTT impairs HIP14 palmitoyl transferase activity in vivo. |
Hip14 gene-trap knockout mouse generation, palmitoylation assays in brain tissue, behavioral testing, neuropathological analysis, YAC128 mouse model comparison |
Human molecular genetics |
High |
21775500
|
| 2013 |
Constitutive loss of Hip14 (ZDHHC17) in mice produces marked alterations in synaptic function across multiple brain regions, and significantly impairs hippocampal long-term plasticity and memory, demonstrating that a single PAT has non-redundant roles in synaptic physiology. |
Hip14 knockout mouse, electrophysiology (LTP recordings), behavioral memory tests (hippocampus-dependent tasks) |
Proceedings of the National Academy of Sciences of the United States of America |
High |
24277827
|
| 2014 |
The ankyrin repeat (AR) domain of HIP14 (ZDHHC17) mediates its interaction with HTT. HTT amino acids 1–548 are sufficient for full interaction; partial interaction occurs with HTT 1–427 and HTT 224–548. Deletion of residues 257–315 reduces but does not abolish binding, suggesting two potential binding domains near residues 224 and 427. |
Co-immunoprecipitation with N- and C-terminal HTT deletion constructs, HIP14-GFP pulldown assays |
PloS one |
Medium |
24651384
|
| 2014 |
Yeast two-hybrid screening identified a large overlap between HIP14 (ZDHHC17) interactors and published HTT interactors. Three novel HIP14 substrates were confirmed: GPM6A, SPRED1, and SPRED3, each palmitoylated by HIP14. Optineurin co-immunoprecipitates with HIP14 but is not palmitoylated by it. |
Yeast two-hybrid screen, co-immunoprecipitation, palmitoylation assay (acyl-RAC) for substrate confirmation |
Human molecular genetics |
Medium |
24705354
|
| 2015 |
The ankyrin repeat (AR) domain of zDHHC17 (HIP14) and zDHHC13 recognizes a conserved short linear motif with consensus [VIAP][VIT]XXQP in substrates including SNAP25, SNAP23, cysteine string protein, huntingtin, CLIP-3, and MAP6, mediating substrate recruitment prior to S-acylation. |
Peptide array binding assays, mutational analysis, in vitro S-acylation assays, sequence motif analysis across substrate proteins |
The Journal of biological chemistry |
High |
26198635
|
| 2015 |
ZDHHC17 is required for proper TrkA-tubulin complex formation in PC12 cells, promoting ERK1/2 phosphorylation and axon outgrowth. Knockdown of ZDHHC17 in zebrafish results in motor dysfunction due to defective axon outgrowth in spinal motor neurons. The promotion of ERK1/2 phosphorylation by ZDHHC17 overexpression was independent of its palmitoyl transferase activity. |
ZDHHC17 siRNA knockdown in zebrafish (motor behavior, immunolabeling of axons), siRNA in NSCs and PC12 cells, co-immunoprecipitation of TrkA-tubulin, ERK1/2 phosphorylation western blot, overexpression experiments |
Molecular and cellular neurosciences |
Medium |
26232532
|
| 2016 |
Adult-specific deletion of Hip14 (ZDHHC17) in mice leads to rapid progressive paralysis and death within 10 weeks, accompanied by striatal synaptic deficits (reduced transmitter release probability, altered spontaneous postsynaptic currents), behavioral deficits, and cortical microgliosis/astrogliosis, demonstrating that HIP14 is essential for maintenance of neuronal integrity and life in the adult. |
Inducible conditional knockout (iHip14Δ/Δ) mice, electrophysiology (striatal synaptic recordings), behavioral tests, brain histology/immunohistochemistry |
BMC biology |
High |
27927242
|
| 2017 |
Using peptide arrays based on SNAP25 and CSPα zDHHC AR-binding motifs (zDABM), a position-specific scoring matrix was derived for zDHHC17 AR binding, predicting and validating 90 human proteins as putative zDHHC17 interactors via their zDABM sequences, including all SNAP25, sprouty, cornifelin, ankyrin, and SLAIN-motif family members. |
Peptide array binding assays (400 peptides), PSSM construction, in vitro binding validation of predicted interactors |
The Journal of biological chemistry |
Medium |
28882895
|
| 2020 |
ZDHHC17 interacts with MAP2K4 and p38/JNK to form a signaling module that activates JNK and p38 MAPK pathways, promoting GBM cell tumorigenicity and glioma stem cell self-renewal. Co-immunoprecipitation and GST pulldown confirmed the ZDHHC17-MAP2K4 interaction. A small molecule genistein disrupts ZDHHC17-MAP2K4 complex formation. |
Co-immunoprecipitation, GST pulldown, pharmacological inhibition (genistein), in vitro and in vivo tumor models, flow cytometry, transwell migration assay |
Theranostics |
Medium |
31938047
|
| 2020 |
ZDHHC17-dependent palmitoylation of DLK enables DLK-dependent somal degeneration after optic nerve crush (ONC), while ZDHHC17-dependent palmitoylation of NMNAT2 maintains distal axon integrity in healthy optic nerves. Conserved zDABM motifs in both DLK and NMNAT2 govern their ZDHHC17-dependent regulation. ZDHHC17 thus couples two previously considered independent pathways of somal and distal axon degeneration. |
Optic nerve crush in conditional ZDHHC17 knockout mice/RGCs, palmitoylation assays, motif mutagenesis, DRG neuron loss-of-function experiments |
Cell reports |
High |
33207199
|
| 2021 |
ZDHHC17 is required as a host factor for SADS-CoV genomic RNA replication. The DHHC domain (palmitoylation-active domain) of ZDHHC17 is specifically required for this function, as truncation mutagenesis removing the DHHC domain abolished virus-supporting activity. The palmitoylation inhibitor 2-bromopalmitate suppresses SADS-CoV infection. |
Genome-wide CRISPR knockout screen (HeLa cells), truncation mutagenesis of ZDHHC17, viral replication assays, 2-bromopalmitate pharmacological inhibition |
mBio |
Medium |
34700373
|
| 2022 |
zDHHC17 can S-acylate Sprouty-2 (Spry2) and SPRED3 via zDABM-independent mechanisms in addition to zDABM-dependent binding. The cysteine-rich SPR domain of SPRED3 (and Spry2) interacts with zDHHC17 independently of the ankyrin repeat domain, revealing a novel mode of enzyme-substrate recognition. |
Mutational analysis of zDABM and SPR domains, Co-IP, in vitro S-acylation assays, zDHHC17 ANK-deletion mutant binding experiments |
The Journal of biological chemistry |
High |
36442513
|
| 2023 |
ZDHHC17 is the major palmitoyl acyltransferase responsible for HSP90α palmitoylation in granulosa cells. ZDHHC17-mediated palmitoylation of HSP90α is required for CYP19A1 (aromatase) expression and androgen-to-estrogen conversion. Loss of ZDHHC17 reduces HSP90α palmitoylation, decreases CYP19A1 levels, and impairs estrogen production. |
siRNA knockdown of ZDHHC17 in granulosa cells, resin-assisted capture palmitoylation assay, CYP19A1 expression analysis, hormone measurement, in vivo PCOS model |
Molecular and cellular endocrinology |
Medium |
37769867
|
| 2024 |
zDHHC17 S-palmitoylates Smad7 at Cys202, Cys225, Cys415, and Cys417 in mammary epithelial cells. Palmitoylation at Cys415 and Cys417 promotes nuclear-to-cytoplasmic translocation of Smad7, enhances Smad7 protein stability, and enforces its inhibitory effect on TGF-β-induced Smad transcriptional responses. |
Resin-assisted capture (RAC) and metabolic palmitoylation labeling, site-directed mutagenesis of Smad7 cysteine residues, subcellular fractionation, TGF-β/Smad transcriptional reporter assays |
The Journal of biological chemistry |
High |
38876303
|
| 2026 |
ZDHHC17 palmitoylates CDK4, and this palmitoylation facilitates CDK4 interaction with cyclin D1. CDK4 palmitoylation depends on TRAF6-mediated K11-linked ubiquitination of CDK4. Blockade of either CDK4 palmitoylation or ubiquitination markedly reduces CDK4 kinase activity and causes cell cycle arrest. ZDHHC17 depletion reduces cell cycle progression and immune response in a high-fat-diet mouse model. |
2-BP palmitoylation inhibition, ZDHHC17 siRNA/depletion, Co-IP (CDK4-cyclin D1), ubiquitination assays (K11-linkage specificity), CDK4 kinase activity assay, in vivo mouse model |
Advanced science |
Medium |
42133178
|
| 2025 |
Drosophila Hip14 (ortholog of ZDHHC17) acts as a rate-limiting factor for lysosome formation and secretory granule-lysosome fusion, lysosomal acidification, and biosynthetic transport of lysosomal hydrolases in larval salivary glands and neurons. Hip14 overexpression accelerates these processes, and Hip14 loss in adult neurons impairs lysosome formation and neuromuscular function. Rab2 GTPase hyperactivation rescues lysosomal and neuronal defects caused by Hip14 or Patsas (HIP14L ortholog) loss. |
Drosophila Hip14 and patsas mutants/RNAi, larval salivary gland and neuron imaging, lysosomal acidification assays, hydrolase trafficking assays, genetic epistasis with constitutively active Rab2 |
bioRxivpreprint |
Medium |
bio_10.1101_2025.02.06.636816
|