Creative Biolabs is offering the most comprehensive services for antibody development projects. With strict regulation and effective execution, we are dedicated to providing the most valuable solutions to complete your projects.
HighlightsCreative Biolabs is offering the most comprehensive services for antibody development projects. With strict regulation and effective execution, we are dedicated to providing the most valuable solutions to complete your projects.
HighlightsCreative Biolabs has established a broad range of platforms for developing novel antibodies or equivalents. These cutting-edge technologies enable our scientists to meet your demands from different aspects and tailor the most appropriate solution that contributes to the success of your projects.
HighlightsWith deep understanding in antibody-related realms and extensive project experience, Creative Biolabs offers a variety of references to help you learn more about our capacities and achievements, including infographic, flyer, case study, peer-reviewed publications, and all kinds of knowledge that can assist your projects. You are also welcome to contact us directly for more specific solutions.
HighlightsGet a real taste of Creative Biolabs, one of the most professional custom service providers in the world. We are committed to providing highly customized comprehensive solutions with the best quality to advance your projects.
Highlights
Loading...All listed services and products are For Research Use Only. Do Not use in any diagnostic or therapeutic applications.
HPS1 biogenesis of lysosomal organelles complex 3 subunit 1 (HPS1) is a soluble cytoplasmic polypeptide encoded by the HPS1 gene, forming stable heterodimers with HPS4 to constitute BLOC-3 complexes within perinuclear cytoplasmic compartments. The protein carries no transmembrane hydrophobic segments and lacks extracellular structural domains, functioning as a cytoplasmic subunit of BLOC-3. The HPS1-HPS4 BLOC-3 complex promotes GDP-GTP nucleotide exchange on Rab32 and Rab38, supporting membrane cargo sorting toward melanosomes and platelet dense granules under steady-state cellular metabolism. Insufficient functional BLOC-3 assembly disrupts trafficking of lysosome-related vesicles, and HPS1-containing BLOC-3 may tune overall Rab GTPase activation efficiency to maintain balanced specialized organelle formation across epithelial and hematopoietic cell populations. Distinct cell subtypes generate unique cargo transport demands, requiring intact HPS1-containing complexes to prevent aberrant vesicle aggregation in cytoplasmic perinuclear zones. Conserved central interaction regions of HPS1 sustain heterodimer contacts with HPS4, which is required for full BLOC-3 guanine nucleotide exchange activity.
Variants within HPS1 coding regions tend to impair heterodimer assembly and reduce BLOC-3-mediated Rab nucleotide exchange activity, correlating with defective lysosomal organelle maturation in human cell models. No other cytoplasmic cofactor fully reproduces all trafficking functions of HPS1-containing BLOC-3 assemblies, though partial functional compensation exists from unrelated sorting complexes. HPS1 localizes exclusively to soluble cytoplasmic pools without integrating into lipid bilayers, separated from integral vesicle membrane transporters. Its fully soluble localization grants dual roles in stabilizing BLOC-3 architecture and regulating Rab-dependent cargo shuttling to specialized organelles. Diminished HPS1 expression weakens vesicle sorting fidelity and leads to accumulation of unprocessed precursor vesicles, making this polypeptide a suitable research target for lysosomal organelle biogenesis analysis.
Fig. 1 Schematic cellular overview illustrating cytoplasmic BLOC‑3 heterodimer complex assembled by HPS1 and HPS4 subunits participating in intracellular vesicle‑sorting pathways.1
The biological functions of soluble cytoplasmic HPS1 BLOC-3 subunit are focused on heterodimer formation and contribution to BLOC-3-mediated Rab guanine nucleotide exchange:
Creative Biolabs offers purified HPS1 protein samples produced under unified preparation workflows, including full-length HPS1 constructs and isolated central interaction domain variants. Truncated fragments cannot support complete HPS4 heterodimerization or BLOC-3-mediated Rab exchange activity, while full-length forms fit lysosomal vesicle sorting research. All batches receive uniform quality screening. Functional assessments may only be performed under simulated cytoplasmic aqueous microenvironment setups. Central dimer interface structure is preserved across batches for comparative cofactor interaction testing. Full-length HPS1 samples retain intact HPS4 binding surfaces post-purification, supporting reliable detection of transient heterodimer complexes in functional comparative analysis.
Not finding the Protein product you need? Contact us to start your one-stop custom service!
Creative Biolabs provides cell research models with adjustable HPS1 expression levels, suitable for structural observation of soluble BLOC-3 cofactors and lysosomal vesicle trafficking research. Sample assessment covers sustained cytoplasmic target detection and HPS4 dimer binding analysis, enabling side-by-side comparison of BLOC-3-mediated Rab activation efficiency under varying HPS1 abundances. These cell models can be paired with vesicle staining schemes to track precursor accumulation shifts linked to HPS1 dosage changes.
Not finding the stable cell line product you need? Contact us to start your one-stop custom service!
Anti-HPS1 recombinant antibodies are generated via standardized workflows, compatible with cytoplasmic localization mapping and BLOC-3 complex identification. The antibody series supports multi-dimensional visualization of HPS1 distribution within perinuclear cell compartments.
Not finding the recombinant antibody product you need? Contact us to start your one-stop custom service!
Beyond catalog products, Creative Biolabs offers specialized custom services for HPS1 research:
HPS1 may act as a soluble cytoplasmic BLOC-3 subunit that heterodimerizes with HPS4; the HPS1-HPS4 complex facilitates Rab32/Rab38 guanine nucleotide exchange for vesicle sorting.
HPS1 expression status might alter lysosome-related organelle maturation efficiency, serving as a key mediator of cytoplasmic vesicle trafficking biological processes.
No, all HPS1 related products and services are strictly for research use only, and cannot be applied in clinical workflows. All material design and functional screening are optimized exclusively for basic laboratory research, without meeting clinical application criteria.
Offerings include full-length HPS1 protein, target-specific recombinant antibodies and tunable expression cell research models, supporting research on BLOC-3 complex assembly and Rab GTPase regulation.
Laboratory analysis schemes may include HPS4 co-binding assays to assess heterodimer interaction capacity under simulated cytoplasmic environments.
