ID   RS21_BRABE              Reviewed;          85 AA.
AC   Q86CT3;
DT   20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   25-MAY-2022, entry version 36.
DE   RecName: Full=40S ribosomal protein S21;
GN   Name=RPS21;
OS   Branchiostoma belcheri (Amphioxus).
OC   Eukaryota; Metazoa; Chordata; Cephalochordata; Leptocardii; Amphioxiformes;
OC   Branchiostomidae; Branchiostoma.
OX   NCBI_TaxID=7741;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   STRAIN=Subsp. tsingtauense;
RA   Zhang S., Li H., Liu Z., Xu A.;
RT   "Cloning and phylogenetic analysis of ribosomal protein S21 from Amphioxus
RT   Branchiostoma belcheri tsingtaunese.";
RL   Submitted (MAR-2003) to the EMBL/GenBank/DDBJ databases.
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; AY264808; AAP21828.1; -; mRNA.
DR   AlphaFoldDB; Q86CT3; -.
DR   SMR; Q86CT3; -.
DR   Proteomes; UP000515135; Unplaced.
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; Reference proteome; Ribonucleoprotein;
KW   Ribosomal protein.
FT   CHAIN           1..85
FT                   /note="40S ribosomal protein S21"
FT                   /id="PRO_0000194738"
SQ   SEQUENCE   85 AA;  9473 MW;  1DECA6AADC7F15B1 CRC64;
     MQNDAGEVVD LYIPRKCSST NRIIGAKDHA SIQINFAEVD PTTGRMTGQY KTYAICGYIR
     QMGESDDCLK RLAIKDKIID AKMDA