| 2013 |
RAB7L1 (RAB29) deficiency in primary rodent neurons or Drosophila dopamine neurons recapitulated degeneration observed with familial PD mutant LRRK2, while RAB7L1 overexpression rescued LRRK2 mutant phenotypes; PD-associated defects in RAB7L1 or LRRK2 led to endolysosomal and Golgi apparatus sorting defects and deficiency of the VPS35 retromer component, placing RAB29 upstream of VPS35/retromer in a common pathway with LRRK2. |
Genetic epistasis in rodent primary neurons and Drosophila, loss-of-function and overexpression rescue experiments, cell biological assays |
Neuron |
High |
23395371
|
| 2017 |
Rab29 recruits LRRK2 to the trans-Golgi network via conserved residues in the LRRK2 ankyrin domain and greatly stimulates LRRK2 kinase activity; pathogenic LRRK2 R1441G/C and Y1699C mutants are more readily recruited and activated by Rab29 than wild-type LRRK2; knockout of Rab29 in A549 cells reduces endogenous LRRK2-mediated phosphorylation of Rab10; Rab29 interaction with LRRK2 also controls LRRK2 biomarker phosphorylation at Ser910/935/955/973. |
Co-immunoprecipitation, LRRK2 kinase activity assays, Rab29 knockout cells, domain mutagenesis (ankyrin domain residues), phosphorylation assays |
The EMBO journal |
High |
29212815
|
| 2018 |
GTP-bound and membrane-associated Rab7L1 (RAB29) interacts with LRRK2 and activates LRRK2 autophosphorylation at Ser1292 (required for LRRK2 toxicity); Rab7L1 controls the proportion of LRRK2 that is membrane-associated and mediates LRRK2 recruitment to the trans-Golgi network; PD mutations in LRRK2 enhance Rab7L1-mediated TGN recruitment and increase phosphorylation of Rab7L1 ~4-fold. |
In vitro phosphorylation assays, membrane/GTP-binding requirement studies, LRRK2 autophosphorylation assays, cell fractionation |
Human molecular genetics |
High |
29177506
|
| 2014 |
Rab29 localizes to the trans-Golgi network and is essential for maintaining TGN integrity; inhibition or depletion of Rab29 causes TGN fragmentation; dominant-negative Rab29T21N or shRNA-Rab29 alters mannose-6-phosphate receptor (M6PR) distribution and disrupts retrograde trafficking of M6PR from endosomes to TGN, without affecting anterograde VSV-G trafficking. |
Dominant-negative expression (Rab29T21N), shRNA knockdown, immunofluorescence, CD8-tagged M6PR endocytosis assay, VSV-G trafficking assay |
PloS one |
Medium |
24788816
|
| 2011 |
Rab29 is recruited to S. Typhi-containing vacuoles but not to broad-host Salmonella vacuoles; the type III secretion effector GtgE from broad-host Salmonella specifically cleaves Rab29 through proteolytic activity, and an S. Typhi strain engineered to express GtgE and cleave Rab29 exhibited increased intracellular replication in human macrophages, demonstrating Rab29 is required for typhoid toxin export. |
Screen for host factors required for typhoid toxin export, immunofluorescence localization, proteolytic cleavage assay with GtgE effector, genetic engineering of bacterial strains, intracellular replication assay |
Proceedings of the National Academy of Sciences of the United States of America |
High |
22042847
|
| 2016 |
In C. elegans neurons, LRRK2 and RAB7L1 orthologs act in an ordered genetic pathway to regulate axonal elongation; the AP-3 complex acts as a downstream effector of LRRK2 and RAB7L1 in intracellular protein trafficking to the lysosome; in mice, deficiency of either RAB7L1 or LRRK2 leads to age-associated lysosomal defects in kidney proximal tubule cells. |
C. elegans genetic epistasis, mouse knockout models, cell-based trafficking assays |
Scientific reports |
High |
27424887
|
| 2017 |
C9ORF72 interacts with RAB7L1 endogenously in SH-SY5Y neuroblastoma cells; C9orf72 haploinsufficiency leads to defective vesicle trafficking and dysfunctional trans-Golgi network phenotypes that are recapitulated by RAB7L1 knockout, and reversed by C9ORF72 overexpression or antisense oligonucleotide treatment. |
Co-immunoprecipitation of endogenous proteins, RAB7L1 genetic ablation, antisense oligonucleotides, patient-derived fibroblasts and iPSC-derived motor neurons |
Brain : a journal of neurology |
Medium |
28334866
|
| 2017 |
LRRK2 phosphorylates Golgi-localized Rab7L1 at Ser72 as a major site (identified by Phos-tag, metabolic labeling, alanine-scan mutagenesis, and phospho-specific antibody); phosphorylation requires Golgi localization of Rab7L1; pathogenic LRRK2 mutants markedly enhance Ser72 phosphorylation; modulation of Ser72 phosphorylation alters trans-Golgi network morphology and distribution. |
Phos-tag electrophoresis, metabolic 32P labeling, alanine-scan mutagenesis of all Ser/Thr residues, phospho-specific antibody, in vitro kinase assay |
Biochemical and biophysical research communications |
High |
29223392
|
| 2015 |
Rab29 colocalizes and interacts with Rab8, Rab11, and IFT20 at the trans-Golgi network in T cells; Rab29 depletion prevents TCR recycling to the immune synapse by blocking Rab11+ endosome polarization via defective recruitment of the dynein microtubule motor; Rab29 similarly promotes primary cilium growth and ciliary localization of Smoothened in ciliated cells. |
Co-immunoprecipitation, immunofluorescence colocalization, siRNA knockdown, TCR recycling assay, ciliogenesis assay |
Cell death and differentiation |
Medium |
26021297
|
| 2018 |
RAB7L1 recruits LRRK2 to the Golgi complex, causing accumulation of phosphorylated RAB8A in a pericentrosomal/centrosomal location and centrosomal deficits; centrosomal alterations depend on Golgi integrity when wild-type LRRK2 is involved, and are at least partly mediated by aberrant LRRK2-mediated RAB8A phosphorylation (blocked by kinase inhibitors and RAB8A knockdown). |
Immunofluorescence, LRRK2 kinase inhibitors, RAB8A knockdown, RAB7L1 overexpression, centrosomal morphology assay |
Frontiers in molecular neuroscience |
Medium |
30483055
|
| 2018 |
Mycobacterial PknG serine/threonine kinase interacts specifically with GDP-bound Rab7l1 at the Golgi complex, blocking the GDP-to-GTP transition of Rab7l1 in a kinase-activity-dependent manner, thereby preventing recruitment of active Rab7l1-GTP to bacilli-containing phagosomes and inhibiting phagosome-lysosome fusion; Rab7l1-GTP on phagosomes is required for subsequent recruitment of EEA1, Rab7, and LAMP2. |
Co-immunoprecipitation, immunofluorescence, GTPase activity assays, kinase-dead PknG mutant, Rab7l1 knockdown, intracellular survival assay |
Journal of immunology |
High |
30037848
|
| 2020 |
Knockout of Rab29 does not influence endogenous LRRK2 activity (as measured by Rab10 and Rab12 phosphorylation) in wild-type, LRRK2[R1441C], or VPS35[D620N] knock-in mouse tissues and primary cell lines; transgenic Rab29 overexpression in mice is also insufficient to stimulate basal LRRK2 activity; lysosomal stress-induced (nigericin, monensin, chloroquine, LLOMe) LRRK2 activation is not blocked in Rab29-deficient cells. |
Rab29 knockout mouse tissues, knock-in mouse models, phospho-Rab10/Rab12 immunoblot, LRRK2 inhibitor controls, transgenic mouse overexpression |
The Biochemical journal |
High |
33135724
|
| 2020 |
RAB29 knockdown does not recapitulate G2019S LRRK2-mediated EGFR trafficking defects (which are mediated by RAB10), but RAB29 overexpression rescues pathogenic LRRK2-mediated trafficking deficits independently of Golgi integrity, suggesting RAB29 positively modulates non-Golgi-related trafficking events. |
siRNA knockdown, EGFR trafficking assay, RAB10/RAB29 overexpression rescue, Golgi disruption experiments |
Cells |
Medium |
32709066
|
| 2023 |
Cryo-electron microscopy structures of Rab29-LRRK2 complexes in three oligomeric states reveal that Rab29 induces an unexpected tetrameric assembly of LRRK2, comprising two kinase-active central protomers and two kinase-inactive peripheral protomers; the central protomers adopt an active-like conformation resembling that trapped by clinical kinase inhibitor DNL201. |
Cryo-electron microscopy structural determination, three oligomeric states captured |
Science |
High |
38127736
|
| 2023 |
Rab29 is phosphorylated at Ser185 (not by LRRK2) under lysosomal overload stress, as identified by mass spectrometry; phosphomimetic Ser185 mutants counteract lysosomal enlargement; PKCα and PKCδ are involved in this phosphorylation and control lysosomal localization of Rab29 in concert with LRRK2. |
Mass spectrometry phosphorylation site identification, phosphomimetic mutant expression, PKC inhibitors/knockdown, lysosomal size assay, immunofluorescence |
Journal of cell science |
Medium |
37365944
|
| 1997 |
Rat Rab29 encodes a Ras-related GTP-binding protein with rapid nucleotide exchange but lacking detectable intrinsic GTPase activity; the C-terminus harbors a structural element essential for nucleotide exchange, as shown by a splice variant (Rab29Δ37) lacking the C-terminus that is loaded with GTP during biosynthesis but shows almost no nucleotide exchange. |
Recombinant protein expression, radiolabeled GTP exchange assay, GTPase activity assay, cDNA cloning of splice variants |
Biochimica et biophysica acta |
Medium |
9177482
|
| 2021 |
Rab29 does not bind GDI (GDP-dissociation inhibitor) in cytosol and has an unusually fast nucleotide exchange rate; conventional GTP-locked mutations do not have the expected activating effect; novel fast-exchange mutants (I64T and V156G) were characterized via fluorescence-based assay. |
Fluorescence-based nucleotide exchange assay, biochemical characterization of Rab29 mutants |
Methods in molecular biology |
Medium |
34453707
|
| 2022 |
Unlike typical Rab proteins, Rab29 is predominantly membrane-associated (by ultracentrifugation fractionation), resistant to extraction from membranes by GDP-dissociation inhibitors in vitro, and fails to interact with GDIs; GDI knockout does not affect Rab29 membrane localization; geranylgeranyltransferase knockout decreases Rab29 hydrophobicity confirming geranylgeranylation, but additional mechanisms beyond geranylgeranylation contribute to membrane association. |
Ultracentrifugation fractionation, in vitro GDI extraction assay, GDI knockout cells, geranylgeranyltransferase knockout cells, hydrophobicity analysis |
The Journal of biological chemistry |
Medium |
36116551
|
| 2022 |
Rab7l1 knockdown in THP-1 macrophages leads to higher surface expression of TLR2, TLR4, and CD14 (with lower intracellular levels), increased phospho-ERK1/2 and phospho-p38 MAPK, higher NF-κB nuclear translocation, and elevated TNF-α and IL-10 production upon LPS or Pam3CSK4 stimulation, indicating Rab7l1 regulates TLR surface expression and downstream MAPK/NF-κB signaling. |
shRNA knockdown, flow cytometry surface/intracellular receptor quantification, phospho-ERK/p38 immunoblot, NF-κB nuclear translocation assay, cytokine ELISA |
Biochemical and biophysical research communications |
Medium |
36502628
|
| 2025 |
RGDI-1 (Rho GDP dissociation inhibitor-1) acts as a GDI for Rab7l1; mycobacterial PknG interacts with both Rab7l1-GDP and RGDI-1 (using Rab7l1 as a scaffold), phosphorylates RGDI-1, and prevents RGDI-1 dissociation from Rab7l1, thereby reducing Rab7l1 GTPase activity and blocking phagosome-lysosome fusion; when RGDI-1 is absent, PknG cannot inhibit P-L fusion. |
Co-immunoprecipitation, in vitro kinase assay (PknG phosphorylating RGDI-1), GTPase activity assay, RGDI-1 knockout/knockdown, intracellular mycobacterial survival assay |
ACS infectious diseases |
Medium |
41439637
|
| 2025 |
TBC1D9, a Rab GTPase-activating protein (GAP), preferentially interacts with GTP-bound Rab29 (confirmed by co-immunoprecipitation) and co-localizes with Rab29 following stimulation; Rab29 overexpression inhibits NF-κB activation and IL-6 production, while Rab29 deficiency increases both, opposing TBC1D9's effect; thus TBC1D9 acts as a GAP for Rab29 to regulate homeostatic NF-κB signaling and selective IL-6 production. |
Co-immunoprecipitation (GTP-dependent interaction), depletion/overexpression assays, NF-κB reporter, proteomics, immunofluorescence co-localization, IL-6 ELISA |
Frontiers in cellular and infection microbiology |
Medium |
41306588
|
| 2018 |
Rab29 specifically interacts with LRRK2 with higher affinity than Rac1; mutant Rab29 (but not Rac1) alters endosome-to-TGN retrograde trafficking of CI-M6PR and its stability; wild-type Rab29 (but not Rac1) rescues altered retrograde trafficking induced by pathogenic LRRK2G2019S. |
Co-immunoprecipitation, domain binding preference analysis, CI-M6PR retrograde trafficking assay, rescue experiments |
Journal of biomedical research |
Low |
29336357
|