Vacuolar protein sorting-associated protein 28 homolog (UniProt: Q9UK41; also known as H-Vps28, ESCRT-I complex subunit VPS28) is encoded by the VPS28 gene (Gene ID: 51160) in human. VPS28 is a component of the Endosomal Sorting Complex Required for Transport (ESCRT)-I complex that regulates the vesicular trafficking process. This complex forms the machinery driving protein sorting from endosomes to lysosomes. It is located in the cell membrane and late endosome membrane. Two isoforms of VPS28 have been described that are generated by alternative splicing. ESCRT complexes play a vital role in receptor down-regulation, lysosome biogenesis, and budding of HIV. In humans, ESCRT-I complex consists of TSG101, VPS28, and one of four potential human VPS37 homologues. The main role of ESCRT-I is to recognize ubiquitinated cargo via the UEV domain of the VPS23/TSG101 subunit. The N-terminal domain of VPS28 contains a conformationally dynamic hydrophobic binding site on its surface. The C-terminal domain of VPS28 is reported to bind the ESCRT-II complex. (Ref.: Kostelansky, MS et al. (2006). Cell 125(1); 113-126).

~51 kDa observed; 25.43 kDa calculated. Uncharacterized bands may be observed in some lysate(s).

This rabbit polyclonal antibody detects ESCRT-I complex subunit VPS28 in human cells.

A full-length recombinant ESCRT-I complex subunit VPS28 (VPS28).

Anti-VPS28, Cat. No. ABS1679, is a rabbit polyclonal antibody that detects ESCRT-I complex subunit VPS28 and has been tested for use in Immunofluorescence and Western Blotting.

Research Category
Signaling

Western Blotting Analysis: A representative lot detected recombinant VPS28 protein and VPS28 in cell extracts (Stuchell, M.D., et. al. (2004). J Biol Chem. 279(34):36059-71). Immunofluorescence Analysis: A representative lot detected VPS28 in HEK293T cells transfected with VPS28 (Silvestri, L.S., et. al. (2007). J Infect Dis. 196 Suppl 2:S264-70).

Affinity Purified

Format: Purified

Purified rabbit polyclonal antibody in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Stable for 1 year at 2-8°C from date of receipt.

Evaluated by Western Blotting in GST-VPS28 recombinant protein.

Western Blotting Analysis: A 1:1,000 dilution of this antibody detected recombinant GST-VPS28 protein.

Concentration: Please refer to lot specific datasheet.

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