Anti-RNF7 polyclonal antibody (CABT-BL6327)


Host Species
Antibody Isotype
Species Reactivity
human RNF7 (residues 1-113) [GST-tagged]


Application Notes
WB: 1.0 µg/ml
IP: Use 20 µg/mg of cell extract
*Suggested working dilutions are given as a guide only. It is recommended that the user titrates the product for use in their own experiment using appropriate negative and positive controls.


Alternative Names
RNF7; ring finger protein 7; SAG; ROC2; CKBBP1; RING-box protein 2
Entrez Gene ID
UniProt ID


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RNF7 knockdown inhibits prostate cancer tumorigenesis by inactivation of ERK1/2 pathway


Authors: Xiao, Yangjiong; Jiang, Yan; Song, Hongmei; Liang, Tao; Li, Yonghui; Yan, Dongliang; Fu, Qiang; Li, Zuowei

Development of castration resistance is a key contributor to mortality in patients with prostate cancer. High expression of RING finger protein 7 (RNF7) in cancer cells is known to play a key role in tumor progression. However, the role of RNF7 in prostate cancer progression is not well elucidated. In this study, we silenced RNF7 by shRNA interference in two castration resistant prostate cancer (CRPC) cell lines, DU145 and PC3. RNF7 knockdown attenuated proliferation and enhanced sensitivity of prostate cancer cells to cisplatin treatment. Invasive property of DU145 and PC3 cells was also attenuated by RNF7 silencing. The underlying mechanisms appear to be associated with accumulation of tumor suppressive proteins p21, p27 and NOXA, while inactivation of ERK1/2 by RNF7 knockdown. We demonstrated that RNF7 knockdown induced growth suppression of prostate cancer cells and inactivated ERK1/2 pathway, which suggested RNF7 might be a potential novel therapeutic target for CRPC.

Dysfunction of the Ubiquitin Proteasome and Ubiquitin-Like Systems in Schizophrenia


Authors: Rubio, Maria D.; Wood, Krista; Haroutunian, Vahram; Meador-Woodruff, James H.

Protein expression abnormalities have been implicated in the pathophysiology of schizophrenia, but the underlying cause of these changes is not known. We sought to investigate ubiquitin and ubiquitin-like (UBL) systems (SUMOylation, NEDD8ylation, and Ufmylation) as putative mechanisms underlying protein expression abnormalities seen in schizophrenia. For this, we performed western blot analysis of total ubiquitination, free ubiquitin, K48- and K63-linked ubiquitination, and E1 activases, E2 conjugases, and E3 ligases involved in ubiquitination and UBL post-translational modifications in postmortem brain tissue samples from persons with schizophrenia (n = 13) and comparison subjects (n = 13). We studied the superior temporal gyrus (STG) of subjects from the Mount Sinai Medical Center brain collection that were matched for age, tissue pH, and sex. We found an overall reduction of protein ubiquitination, free ubiquitin, K48-linked ubiquitination, and increased K63 polyubiquitination in schizophrenia. Ubiquitin E1 activase UBA (ubiquitin activating enzyme)-6 and E3 ligase Nedd (neural precursor cell-expressed developmentally downregulated)-4 were decreased in this illness, as were E3 ligases involved in Ufmylation (UFL1) and SUMOylation (protein inhibitor of activated STAT 3, PIAS3). NEDD8ylation was also dysregulated in schizophrenia, with decreased levels of the E1 activase UBA3 and the E3 ligase Rnf7. This study of ubiquitin and UBL systems in schizophrenia found abnormalities of ubiquitination, Ufmylation, SUMOylation, and NEDD8ylation in the STG in this disorder. These results suggest a novel approach to the understanding of schizophrenia pathophysiology, where a disruption in homeostatic adaptation of the cell underlies discreet changes seen at the protein level in this illness.

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