Ribosomal protein L21 (IPR001787)

Short name: Ribosomal_L21

Overlapping homologous superfamilies

Family relationships


Ribosomal protein L21 is one of the proteins from the large ribosomal subunit. In Escherichia coli, L21 is known to bind to the 23S rRNA in the presence of L20. It belongs to a family of ribosomal proteins which, on the basis of sequence similarities, groups:

  • Bacterial L21.
  • Marchantia polymorpha chloroplast L21.
  • Cyanelle L21.
  • Plant chloroplast L21 (nuclear-encoded).

Bacterial L21 is a protein of about 100 amino-acid residues, the mature form of the spinach chloroplast L21 has 200 residues.

GO terms

Biological Process

GO:0006412 translation

Molecular Function

GO:0003723 RNA binding
GO:0003735 structural constituent of ribosome

Cellular Component

GO:0005840 ribosome

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.