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Target intelligence / Profile preview
Protein lin-54 homolog (LIN54)
- Target
- LIN54
- Molecular classification
- Transcription factor, Chromatin-associated protein, DREAM complex subunit, DNA-binding protein
01
Overview
Protein lin-54 homolog (LIN54) is a DNA-binding component of the MuvB core complex, which together with other subunits (LIN9, LIN37, LIN52, and RBAP48) forms critical multiprotein complexes regulating transcription of genes required for cell cycle progression. LIN54 specifically binds to CHR DNA elements within promoters of G2/M phase cell cycle genes. By recruiting these complexes to precise genomic locations, LIN54 serves as a key determinant of whether the MuvB complex acts as a repressor (DREAM complex, in quiescent cells) or an activator (MMB or FOXM1-MuvB, in dividing cells). LIN54's CXC domains mediate DNA binding with high specificity and are essential for its nuclear localization and function in gene expression control. Imbalances or mutations in MuvB components have been implicated in cancer due to their fundamental role in cell proliferation and chromatin regulation.
- Other names
- LIN54CXCDC1KIAA2037MIP120DKFZp686L1814JC8.6TCX1CXC domain-containing protein 1CXC domain containing 1lin-54 homolog
02
Mechanism of action
Not applicable; no direct-targeted drugs
03
Biological functions
Regulation of cell-cycle dependent gene expressionTranscriptional repression (via DREAM complex)Transcriptional activation (via MMB and FOXM1-MuvB complexes)Binding to cell cycle gene promoters at CHR (cell cycle genes homology region) DNA motifs
04
Disease associations
Cancer (imbalances in MuvB components are linked to abnormal cell proliferation in various cancers)Potential roles in developmental disorders, inferred from essential cell cycle regulation (not directly established as a disease gene)
05
Safety considerations
None specific to LIN54 as a direct therapeutic target, since it is not currently drugged. General disruption of MuvB/DREAM function affects cell proliferation and can contribute to oncogenesis, suggesting potential risk in targeting the complex.
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