ID   RS21_SUBDO              Reviewed;          86 AA.
AC   Q4KTC0;
DT   20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   02-AUG-2005, sequence version 1.
DT   25-MAY-2022, entry version 28.
DE   RecName: Full=40S ribosomal protein S21;
GN   Name=RPS21;
OS   Suberites domuncula (Sponge).
OC   Eukaryota; Metazoa; Porifera; Demospongiae; Heteroscleromorpha; Suberitida;
OC   Suberitidae; Suberites.
OX   NCBI_TaxID=55567;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RX   PubMed=16229974; DOI=10.1016/j.gene.2005.08.015;
RA   Perina D., Cetkovic H., Harcet M., Premzl M., Lukic-Bilela L.,
RA   Mueller W.E.G., Gamulin V.;
RT   "The complete set of ribosomal proteins from the marine sponge Suberites
RT   domuncula.";
RL   Gene 366:275-284(2006).
CC   -!- SUBUNIT: Component of the 40S small ribosomal subunit.
CC       {ECO:0000250|UniProtKB:P63220}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm, cytosol
CC       {ECO:0000250|UniProtKB:P63220}. Cytoplasm
CC       {ECO:0000250|UniProtKB:P63220}. Rough endoplasmic reticulum
CC       {ECO:0000250|UniProtKB:P63221}. Note=Detected on cytosolic polysomes
CC       (By similarity). Detected in ribosomes that are associated with the
CC       rough endoplasmic reticulum (By similarity).
CC       {ECO:0000250|UniProtKB:P63220, ECO:0000250|UniProtKB:P63221}.
CC   -!- SIMILARITY: Belongs to the eukaryotic ribosomal protein eS21 family.
CC       {ECO:0000305}.
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DR   EMBL; AY857479; AAX48898.1; -; mRNA.
DR   AlphaFoldDB; Q4KTC0; -.
DR   SMR; Q4KTC0; -.
DR   GO; GO:0005829; C:cytosol; IEA:UniProtKB-SubCell.
DR   GO; GO:0005840; C:ribosome; IEA:UniProtKB-KW.
DR   GO; GO:0005791; C:rough endoplasmic reticulum; IEA:UniProtKB-SubCell.
DR   GO; GO:0003735; F:structural constituent of ribosome; IEA:InterPro.
DR   GO; GO:0006412; P:translation; IEA:InterPro.
DR   Gene3D; 3.30.1230.20; -; 1.
DR   InterPro; IPR001931; Ribosomal_S21e.
DR   InterPro; IPR018279; Ribosomal_S21e_CS.
DR   InterPro; IPR038579; Ribosomal_S21e_sf.
DR   PANTHER; PTHR10442; PTHR10442; 1.
DR   Pfam; PF01249; Ribosomal_S21e; 1.
DR   PIRSF; PIRSF002148; Ribosomal_S21e; 1.
DR   PROSITE; PS00996; RIBOSOMAL_S21E; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Endoplasmic reticulum; Ribonucleoprotein; Ribosomal protein.
FT   CHAIN           1..86
FT                   /note="40S ribosomal protein S21"
FT                   /id="PRO_0000194749"
SQ   SEQUENCE   86 AA;  9242 MW;  1BB43A13B5CCEAA7 CRC64;
     MQNEAGETVD VYIPRKCSAS GRIIGARDYA AVQLNIADVD EKTGRVTGGF KTYAVSGFIR
     AMGESDDCLH RICTRDGICA GEQPQS