Ubiquitin-specific protease 36 is an enzyme that in humans is encoded by the USP36 gene. This gene encodes a member of the ubiquitin-specific protease family of proteases that is a deubiquitinating enzyme (DUB) with His and Cys domains. This protein is located in the nucleoli and deubuquitinate nucleophosmin and fibrillarin. May be required for maintaining multiple types of adult stem cells. May function as a transcriptional repressor by continually deubiquiting histone H2B at the promoters of genes critical for cellular differentiation, thereby preventing histone H3 'Lys-4' trimethylation (H3K4).
Background References
1. Puente XS et al. Human and mouse proteases: a comparative genomic approach. Nat Rev Genet 4 (7): 544–558 (2003).
2. Endo A et al. Nucleolar structure and function are regulated by the deubiquitylating enzyme USP36". J Cell Sci 122: 678–86 (2009).
Sequence Similarity
Belongs to the peptidase C19 family.
Tissue Specificity
Broadly expressed.
Post-translational Modification
Polyubiquitinated by NEDD4L, no effect on USP36 protein levels. Both proteins interact with and regulate each other's ubiquitination levels.
ICC staining USP36 in A549 cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
ICC staining USP36 in Hela cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
ICC staining USP36 in LOVO cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
Immunohistochemical analysis of paraffin-embedded human liver cancer tissue using anti-USP36 antibody. Counter stained with hematoxylin.
Immunohistochemical analysis of paraffin-embedded human spleen tissue using anti-USP36 antibody. Counter stained with hematoxylin.
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