E3 ubiquitin-protein ligase CBLL2 (CBLL2)

E3 ubiquitin-protein ligase CBLL2 (CBLL2) is an enzyme that belongs to the zinc finger protein family, containing both a RING-type and a C2H2-type zinc finger domain. CBLL2 catalyzes the ubiquitination of substrate proteins, tagging them for degradation via the ubiquitin-proteasome system. It is expressed in multiple tissues with prominent localization in the testis, implicating a possible role in human sperm production and quality control. While E3 ubiquitin ligases as a family play a critical part in protein turnover, signal transduction, and cellular homeostasis, specific mechanistic details of CBLL2’s disease associations or therapeutic potential are less well-established but may include cancer and reproductive biology due to its enzyme class’s function. No direct drugs or clinical interventions currently target CBLL2 specifically, but E3 ligases are increasingly recognized as key therapeutic nodes in targeted protein degradation strategies.

Other names

Cbl proto-oncogene like 2ZNF645FLJ25735HAKAILCT138Cbl proto-oncogene-like protein 2RING-type E3 ubiquitin transferase ZNF645Zinc finger protein 645c-Cbl-like protein 2

Indirect enzyme inhibition or targeted protein degradation; general mechanisms for E3 ubiquitin ligase inhibitors or PROTACs, but none specific to CBLL2 are available