| 2005 |
ZDHHC9 (DHHC9) forms a protein complex with GCP16 and together they function as a human protein palmitoyltransferase with specificity for H-Ras and N-Ras, but not myristoylated Gαi1 or GAP-43. DHHC9 is an integral membrane protein with a DHHC cysteine-rich domain; GCP16 is required for DHHC9 enzymatic activity and protein stability. The complex co-distributes in the Golgi apparatus. |
Co-immunoprecipitation, purified DHHC9·GCP16 in vitro palmitoylation assay, subcellular fractionation/co-distribution studies |
The Journal of biological chemistry |
High |
16000296
|
| 2007 |
Loss-of-function mutations in ZDHHC9 (frameshift, splice-site, and missense) cause X-linked intellectual disability associated with Marfanoid habitus, establishing ZDHHC9 as the first palmitoyltransferase whose disruption causes intellectual disability. The mechanism involves altered palmitoylation of NRAS and HRAS, affecting their subcellular localization. |
DNA sequencing of 250 XLID families identifying four independent mutations in ZDHHC9; functional interpretation based on known palmitoyltransferase activity |
American journal of human genetics |
Medium |
17436253
|
| 2014 |
Two XLID-associated missense variants of ZDHHC9, R148W and P150S, reduce the steady-state level of the palmitoyl-ZDHHC9 intermediate, demonstrating that these mutations impair the autopalmitoylation step (step 1) of the two-step palmitoyltransferase reaction mechanism. |
In vitro autopalmitoylation assay with purified mutant ZDHHC9 proteins; biochemical characterization of enzyme-palmitoyl intermediate |
The Journal of biological chemistry |
High |
24811172
|
| 2013 |
miR-134 directly interacts with DHHC9 mRNA in somatostatin interneurons. Activity-dependent stimulation (bicuculline treatment) decreases DHHC9 expression in a miR-134-dependent manner, reducing membrane localization of H-Ras, establishing a miR-134 → DHHC9 → H-Ras membrane targeting axis. |
miRNA-mRNA complex trapping assay (CLASH), ratiometric miRNA sensor, DHHC9 expression measurement after bicuculline treatment, H-Ras membrane localization reporter assay |
Proceedings of the National Academy of Sciences of the United States of America |
Medium |
24127608
|
| 2019 |
Loss of Zdhhc9 in hippocampal neurons causes shorter dendritic arbors (via impaired Ras palmitoylation) and fewer inhibitory synapses (via impaired TC10 palmitoylation), altering the excitatory-to-inhibitory balance. Zdhhc9 knockout mice exhibit seizure-like activity and altered synaptic currents. |
Hippocampal neuron cultures from Zdhhc9 KO mice; dendritic morphology quantification; inhibitory synapse immunostaining; electrophysiology (mEPSC/mIPSC recording); palmitoylation assay for Ras and TC10 substrates |
Cell reports |
High |
31747610
|
| 2021 |
ZDHHC9 palmitoylates GLUT1 at Cys207, and this S-palmitoylation is required to maintain GLUT1 plasma membrane localization. Knockout of ZDHHC9 or C207S mutation abrogates palmitoylation, causes GLUT1 mislocalization, impairs glycolysis, cell proliferation, and glioblastoma tumorigenesis in vivo. |
Acyl-biotin exchange (ABE) assay, ZDHHC9 knockout, site-directed mutagenesis (C207S), immunofluorescence for GLUT1 localization, glycolysis assay, xenograft tumor model |
Nature communications |
High |
34620861
|
| 2023 |
GCP16 stabilizes DHHC9 by preventing its aggregation through protein complex formation. Only properly folded DHHC9-GCP16 complex is enzymatically active in vitro. The C-terminal cysteine motif (CCM) conserved in the DHHC9 subfamily is required for DHHC9-GCP16 complex formation and activity. XLID mutations in ZDHHC9 reduce protein stability and complex formation with GCP16. |
Size-exclusion chromatography, in vitro palmitoyl acyltransferase assay, mutagenesis of CCM, co-expression stability assays |
Frontiers in physiology |
High |
37035671
|
| 2023 |
ZDHHC9 palmitoylates β-catenin, promoting its ubiquitination and degradation, thereby suppressing Wnt/β-catenin signaling. Acyl protein thioesterase 1 (APT1) depalmitoylates β-catenin and opposes this effect. DHHC9 ablation in tubular cells aggravates renal fibrosis, while DHHC9 overexpression is protective. |
Co-immunoprecipitation, ABE palmitoylation assay, ubiquitination assay, genetic knockout and overexpression in mouse UUO and IRI fibrosis models |
Nature communications |
High |
37865665
|
| 2023 |
ZDHHC9 palmitoylates Rab3gap1, which causes Rab3gap1 spatial segregation from Rab3a, elevates Rab3a-GTP levels, promotes formation of Rab3a-positive peripheral vesicles, and impairs exocytosis, thereby limiting atrial natriuretic peptide (ANP) release from cardiomyocytes. |
Palmitoylation assay, co-immunoprecipitation, subcellular localization imaging, Rab3a-GTP pull-down, ANP secretion assay in cardiomyocytes |
JACC. Basic to translational science |
Medium |
37325411
|
| 2024 |
ZDHHC9 binds to and palmitoylates Bip/GRP78 at Cys420, enhancing Bip protein stability and preserving its ER localization, thereby inhibiting the unfolded protein response (UPR). SP1 transcriptionally activates ZDHHC9 expression. |
Co-immunoprecipitation, ABE palmitoylation assay, site-directed mutagenesis (C420), subcellular localization imaging (ER marker), UPR reporter assays, ZDHHC9 knockdown |
Cancer letters |
Medium |
39002690
|
| 2025 |
ZDHHC9 localizes to Golgi outposts in oligodendrocyte (OL) processes and is the most highly expressed PAT in myelinating OLs. Zdhhc9 KO mice display myelin morphological and structural abnormalities and impaired MBP palmitoylation. ZDHHC9 palmitoylates Myelin Basic Protein (MBP) in heterologous cells, and MBP palmitoylation is reduced in Zdhhc9 KO brain. |
Cell-type-specific expression analysis, live imaging/immunofluorescence for Golgi outpost localization, OL fate tracing, sparse cell labeling morphology, MBP palmitoylation assay in heterologous cells and KO brain |
eLife |
Medium |
41031565
|
| 2025 |
ZDHHC9 palmitoylates STRN4 (a STRIPAK complex component) at Cys701. This palmitoylation reduces YAP phosphorylation, promotes YAP nuclear translocation, and activates Hippo pathway transcriptional targets (CCN1, CCN2, ANKRD1), driving cancer cell migration. |
Proteomic analysis, co-immunoprecipitation, site-directed mutagenesis (C701), YAP phosphorylation and nuclear localization assays, ZDHHC9 knockdown migration assays in vitro and in vivo metastasis assay |
Journal of cellular and molecular medicine |
Medium |
40903842
|
| 2025 |
ZDHHC9 palmitoylates LAMTOR1 at Cys3/4 residues, enhancing mTORC1 recruitment to the lysosomal surface and activating mTOR signaling in renal cell carcinoma. |
Co-immunoprecipitation, ABE palmitoylation assay, site-directed mutagenesis (Cys3/4), mTORC1 lysosomal recruitment assay, ZDHHC9 knockdown with mTOR signaling readouts |
Cell death & disease |
Medium |
41856969
|
| 2025 |
ZDHHC9 palmitoylates hnRNPU at Cys497 and Cys607, increasing its protein stability. This stabilization promotes SAT1 transcription, enhancing spermine catabolism, and contributes to prostate cancer proliferation. |
Mass spectrometry, co-immunoprecipitation, site-directed mutagenesis (Cys497/607), palmitoylation assay, RNA sequencing, xenograft model |
Journal of translational medicine |
Medium |
41419885
|
| 2025 |
ZDHHC9 palmitoylates ACSL4 at Cys595, enhancing ACSL4 enzymatic activity, promoting lipid peroxidation, and driving ferroptosis in corpus cavernosum fibroblasts. PI3K/AKT signaling is identified as an upstream regulator of ZDHHC9 expression in this context. |
ABE palmitoylation assay, site-directed mutagenesis (C595), ACSL4 enzymatic activity assay, lipid peroxidation measurement, ZDHHC9 knockdown with siRNA-LNPs in vivo mouse model |
Advanced science |
Medium |
42085610
|
| 2026 |
ZDHHC9 palmitoylates PCBP1 at Cys109, inhibiting PCBP1 ubiquitination and thereby stabilizing it. Stabilized PCBP1 promotes SLC7A11 RNA stability, suppressing ferroptosis and promoting gastric cancer liver metastasis. |
Co-immunoprecipitation, LC-MS, ABE palmitoylation assay, site-directed mutagenesis (C109), ubiquitination assay, RNA stability assay, in vivo metastasis model |
NPJ precision oncology |
Medium |
41535416
|
| 2026 |
ZDHHC9 palmitoylates KLF5 at Cys438, enhancing ADCY4 activity and elevating intracellular cAMP levels, thereby activating the cAMP/PKA/CREB signaling pathway to promote colorectal cancer cell proliferation and migration. |
ABE palmitoylation assay, site-directed mutagenesis (C438), RNA sequencing, ADCY4 activity assay, cAMP measurement, ZDHHC9 knockdown in vitro and in vivo |
Oncogene |
Medium |
41882103
|
| 2026 |
ZDHHC9 palmitoylates STAT1 at Cys577, and this palmitoylation competes with/converts to Tyr701 phosphorylation via the JAK1-STAT1 pathway, modulating STAT1 nuclear activity and downstream gene transcription to promote gastric cancer progression. |
ABE palmitoylation assay, co-immunoprecipitation, site-directed mutagenesis (Cys577), immunofluorescence, confocal imaging, Western blot for JAK1-STAT1 phosphorylation, ZDHHC9 knockdown |
Journal of gastroenterology |
Medium |
41711908
|
| 2025 |
ZDHHC9 interacts with KRAS by co-immunoprecipitation and promotes osteosarcoma progression by palmitoylating KRAS to activate the RAS/MAPK signaling pathway (Raf1, ERK1/2 activation). |
Co-immunoprecipitation, molecular docking, proteomic sequencing, Western blot for MAPK pathway, xenograft model, KRAS overexpression rescue experiment |
Scientific reports |
Medium |
41087383
|
| 2025 |
ZDHHC9 palmitoylates CD36 (binding confirmed by Co-IP), which promotes CD36 plasma membrane localization and formation of the CD36/Fyn/Lyn complex. This activates the JNK1 pathway and inhibits ERK1/2, impairing mammary epithelial cell proliferation under high-fat conditions. |
Co-immunoprecipitation, ABE palmitoylation assay, site-directed mutagenesis of CD36 cysteines, immunofluorescence for CD36 localization, DHHC9 knockdown, in vivo mouse HFD model |
Cellular & molecular biology letters |
Medium |
41087856
|
| 2023 |
ZDHHC9 knockdown reduces PD-L1 palmitoylation and promotes PD-L1 protein degradation in lung adenocarcinoma cells, establishing ZDHHC9 as the palmitoyl transferase that stabilizes PD-L1 through palmitoylation. |
ZDHHC9 knockdown/overexpression, palmitoylation assay, PD-L1 protein stability measurement, proliferation and migration assays |
In vitro cellular & developmental biology. Animal |
Low |
37002491
|
| 2025 |
ZDHHC9 palmitoylates CD38 at Cys16, which is required to maintain CD38 protein expression in tumor cells. APT1 acts as the opposing depalmitoylase. A competitive peptide blocking CD38 palmitoylation decreases CD38 expression and suppresses tumor progression in vivo. |
ABE palmitoylation assay, site-directed mutagenesis (Cys16), APT1 depalmitoylation assay, competitive peptide in vivo tumor model |
Communications biology |
Medium |
40121269
|
| 2025 |
ZDHHC9 palmitoylates PKG1 in osteoblasts, and this palmitoylation alters the distance between the ER and mitochondria and changes MAMs-related protein expression, contributing to osteoblast dysfunction in T2DM. |
Co-immunoprecipitation, fluorescence co-localization, Zdhhc9 knockdown and Prkg1 silencing in MC3T3-E1 cells and T2DM mouse model, MAMs distance measurement |
Journal of dental research |
Low |
40102769
|