background:
DCUN1D1 (DCUN1 domain-containing protein 1) contains a DUF298 domain and a UBA-like ubiquitin. Forms part of an E3 ubiquitin ligase complex for neddylation. Required for neddylation of cullin components of E3 cullin-RING ubiquitin ligase complexes by enhancing the rate of cullins neddylation. Functions to recruit the NEDD8-charged E2 enzyme to the cullin component. Involved in the release of inhibitory effets of CAND1 on cullin-RING ligase E3 complex assembly and activity. Acts also as an oncogene facilitating malignant transformation and carcinogenic progression. Defects in DCUN1D1 may be a cause of squamous cell carcinomas.
Strongly overexpressed in thyroid tumors, bronchioloalveolar carcinomas, and malignant tissues of squamous cell carcinoma of the oral tongue. Not overexpressed in aggressive adrenocortical carcinomas.
Subunit:
Part of an E3 complex for neddylation composed of cullins, RBX1, UBE2M and CAND1. Interacts (via the SLCterminus 50 AA) with CUL1, CUL2, CUL3, CUL4 and CUL5. Binds neddylated CUL1. Interacts (via the SLCterminus 50 AA) directly with RBX1. Interacts preferentially with UBE2M-NEDD8 thioester (via N-terminus 1-26 AA) than with free UBE2M. Interacts with CAND1 when in complex with CUL1-RBX1.
Tissue Specificity:
Expressed in pancreas, kidney, placenta, brain and heart. Weakly or not expressed in liver, skeletal muscle and lung. Strongly overexpressed in thyroid tumors, bronchioloalveolar carcinomas, and malignant tissues of squamous cell carcinoma of the oral tongue. Not overexpressed in aggressive adrenocortical carcinomas.
Similarity:
Contains 1 DCUN1 domain.
Contains 1 UBA-like domain.
Database links:
UniProtKB/Swiss-Prot: Q96GG9.1
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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