| Protein Name | Ribosomal Protein L38 |
|---|---|
| Gene | [RPL38](/genes/rpl38) |
| UniProt ID | [Q70EL2](https://www.uniprot.org/uniprot/Q70EL2) |
| Molecular Weight | 8.3 kDa |
| Subcellular Localization | Cytoplasm, Ribosome (60S subunit) |
| Protein Family | Ribosomal Protein L38 family |
| Gene Location | 8q21.3 |
RPL38 (Ribosomal Protein L38) is a component of the 60S ribosomal subunit essential for protein synthesis in all cells, including neurons[1][2]. As a member of the ribosomal protein family, RPL38 plays crucial roles in translation fidelity, ribosome assembly, and cellular homeostasis. While ribosomal proteins were traditionally viewed as structural components, emerging research reveals that RPL38 has additional functions relevant to neurodevelopment, cancer, and potentially neurodegenerative diseases[3].
RPL38 is a small, basic protein of approximately 71 amino acids with characteristic features:
The protein adopts a compact fold that stabilizes the ribosomal structure at the polypeptide exit tunnel, positioning it to influence translation elongation and termination[4].
RPL38 is an essential component of the 60S large ribosomal subunit. It contributes to:
Beyond protein synthesis, RPL38 has developmental roles:
RPL38 mutations cause a subset of Diamond-Blackfan anemia, a congenital bone marrow failure syndrome characterized by red cell aplasia[5]. Unlike other ribosomal proteins mutated in DBA (such as RPS19, RPS24), RPL38 mutations are relatively rare but demonstrate the critical importance of ribosomal protein function in erythropoiesis.
Altered RPL38 expression has been reported in various cancers:
While direct evidence linking RPL38 to AD or PD is limited, several observations suggest potential connections:
Targeting RPL38 in neurodegeneration is speculative but the protein's roles suggest potential strategies:
Structure of the human ribosomal 60S subunit (2020). Nature. 2020. ↩︎
Ribosomal proteins: functions and evolutionary conservation (2019). Current Opinion in Structural Biology. 2019. ↩︎
RPL38 in development and disease (2021). Human Molecular Genetics. 2021. ↩︎
The ribosome as a translational hub (2018). Cold Spring Harbor Perspectives in Biology. 2018. ↩︎
Diamond-Blackfan anemia: genetics, pathogenesis, and treatment (2023). Blood. 2023. ↩︎