ID   RK21_CYACA              Reviewed;         108 AA.
AC   O19884;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-JAN-1998, sequence version 1.
DT   25-MAY-2022, entry version 73.
DE   RecName: Full=50S ribosomal protein L21, chloroplastic {ECO:0000255|HAMAP-Rule:MF_01363};
GN   Name=rpl21 {ECO:0000255|HAMAP-Rule:MF_01363};
OS   Cyanidium caldarium (Red alga).
OG   Plastid; Chloroplast.
OC   Eukaryota; Rhodophyta; Bangiophyceae; Cyanidiales; Cyanidiaceae; Cyanidium.
OX   NCBI_TaxID=2771;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=RK-1;
RX   PubMed=11040290; DOI=10.1007/s002390010101;
RA   Gloeckner G., Rosenthal A., Valentin K.-U.;
RT   "The structure and gene repertoire of an ancient red algal plastid
RT   genome.";
RL   J. Mol. Evol. 51:382-390(2000).
CC   -!- FUNCTION: This protein binds to 23S rRNA. {ECO:0000255|HAMAP-
CC       Rule:MF_01363}.
CC   -!- SUBUNIT: Part of the 50S ribosomal subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_01363}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast.
CC   -!- SIMILARITY: Belongs to the bacterial ribosomal protein bL21 family.
CC       {ECO:0000255|HAMAP-Rule:MF_01363}.
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DR   EMBL; AF022186; AAB82705.1; -; Genomic_DNA.
DR   PIR; T11952; T11952.
DR   RefSeq; NP_045056.1; NC_001840.1.
DR   AlphaFoldDB; O19884; -.
DR   SMR; O19884; -.
DR   GeneID; 800151; -.
DR   GO; GO:0009507; C:chloroplast; IEA:UniProtKB-SubCell.
DR   GO; GO:0005840; C:ribosome; IEA:UniProtKB-KW.
DR   GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003735; F:structural constituent of ribosome; IEA:InterPro.
DR   GO; GO:0006412; P:translation; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01363; Ribosomal_L21; 1.
DR   InterPro; IPR036164; L21-like_sf.
DR   InterPro; IPR028909; L21p-like.
DR   InterPro; IPR001787; Ribosomal_L21.
DR   InterPro; IPR018258; Ribosomal_L21_CS.
DR   PANTHER; PTHR21349; PTHR21349; 1.
DR   Pfam; PF00829; Ribosomal_L21p; 1.
DR   SUPFAM; SSF141091; SSF141091; 1.
DR   TIGRFAMs; TIGR00061; L21; 1.
DR   PROSITE; PS01169; RIBOSOMAL_L21; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Plastid; Ribonucleoprotein; Ribosomal protein; RNA-binding;
KW   rRNA-binding.
FT   CHAIN           1..108
FT                   /note="50S ribosomal protein L21, chloroplastic"
FT                   /id="PRO_0000181023"
SQ   SEQUENCE   108 AA;  12528 MW;  B07261276465957D CRC64;
     MTNYAIVKAS GRQLWFEPGK YYNINYVHAN PGDKIIFYKV LLLKNTNSLL IGKPFVEKVE
     VHATILQHLK DKKITVFKMQ AKKGTKKKKG YKTVLTKIKI NCIHNHKK