Dual specificity phosphatase 12 (DUSP12)

Dual specificity phosphatase 12 (DUSP12) is an atypical member of the dual-specificity phosphatase subfamily, highly conserved among mammals, and predominantly localized in the nucleus[3][4]. DUSP12 contains a dual-specificity phosphatase catalytic domain, a C2H2 zinc finger domain, and an aldehyde dehydrogenase cysteine (ALDH) active site[1][2]. It is capable of dephosphorylating both phosphoserine/threonine and phosphotyrosine residues on target proteins, especially members of the mitogen-activated protein kinase (MAPK) family such as p38, JNK, and ERK[1][2][3]. By negatively regulating MAPK pathways, DUSP12 modulates cellular signaling involved in proliferation, differentiation, stress responses, and apoptosis[1][2][3][4]. It has been implicated in cancer biology, including large-scale genome studies identifying its genetic locus as a risk factor in neuroblastoma[3]. Overexpression of DUSP12 in macrophages leads to suppressed proinflammatory responses via inhibition of MAPK-mediated cytokine production[1][2]. Its interactions with MAPKs can require scaffold proteins such as STAP2[1][2]. DUSP12's biological functions are distinct among DUSPs, and it may serve as a candidate therapeutic target or marker in oncology and immune modulation research. Notes: - "DUSP1" is listed as an alias in some datasets, but it is also the acronym for a separate dual specificity phosphatase (DUSP1/MKP1); care should be taken as this may introduce confusion in gene/protein annotations[3][4]. - No specific drugs are currently known to selectively target DUSP12 in clinical use or research as of the latest literature; most references describe its molecular function and disease associations, not direct pharmacological modulation.

Other names

Dual-specificity protein phosphatase 12YVH1Dual specificity tyrosine phosphatase YVH1YVH1 protein-tyrosine phosphatase orthologSerine/threonine specific protein phosphataseYVH1 protein-tyrosine phosphatase (S. cerevisiae) orthologDUSP1 (see note below)

Inhibition of MAPK activation via dephosphorylation (not drug-related but describes target action)