ID   RL21_STRTR              Reviewed;          31 AA.
AC   P48956;
DT   01-FEB-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1996, sequence version 1.
DT   03-AUG-2022, entry version 65.
DE   RecName: Full=50S ribosomal protein L21;
DE   Flags: Fragment;
GN   Name=rplU;
OS   Streptococcus thermophilus.
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=1308;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ST11;
RX   PubMed=7958782; DOI=10.1111/j.1574-6968.1994.tb07148.x;
RA   Constable A., Mollet B.;
RT   "Isolation and characterisation of promoter regions from Streptococcus
RT   thermophilus.";
RL   FEMS Microbiol. Lett. 122:85-90(1994).
CC   -!- FUNCTION: This protein binds to 23S rRNA in the presence of protein
CC       L20. {ECO:0000250}.
CC   -!- SUBUNIT: Part of the 50S ribosomal subunit. Contacts protein L20 (By
CC       similarity). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the bacterial ribosomal protein bL21 family.
CC       {ECO:0000305}.
CC   -!- CAUTION: Was originally thought to be ribosomal protein L20.
CC       {ECO:0000305|PubMed:7958782}.
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DR   EMBL; X78208; CAA55043.1; -; Genomic_DNA.
DR   PIR; S42490; S42490.
DR   AlphaFoldDB; P48956; -.
DR   SMR; P48956; -.
DR   STRING; 322159.STER_0455; -.
DR   eggNOG; COG0261; Bacteria.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProt.
DR   GO; GO:0005840; C:ribosome; IEA:UniProtKB-KW.
DR   GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-KW.
DR   InterPro; IPR036164; L21-like_sf.
DR   InterPro; IPR028909; L21p-like.
DR   Pfam; PF00829; Ribosomal_L21p; 1.
DR   SUPFAM; SSF141091; SSF141091; 1.
PE   3: Inferred from homology;
KW   Ribonucleoprotein; Ribosomal protein; RNA-binding; rRNA-binding.
FT   CHAIN           1..>31
FT                   /note="50S ribosomal protein L21"
FT                   /id="PRO_0000181014"
FT   NON_TER         31
SQ   SEQUENCE   31 AA;  3365 MW;  030BB85AAEEF68CA CRC64;
     MSTYAIIKTG GKQVKVEVGQ AIYVEKIIPE A