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Database: UniProt
Entry: Q6CXT6
LinkDB: Q6CXT6
Original site: Q6CXT6 
ID   RS21_KLULA              Reviewed;          87 AA.
AC   Q6CXT6;
DT   20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   16-AUG-2004, sequence version 1.
DT   07-APR-2021, entry version 87.
DE   RecName: Full=40S ribosomal protein S21;
GN   Name=RPS21; OrderedLocusNames=KLLA0A05700g;
OS   Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 /
OS   NRRL Y-1140 / WM37) (Yeast) (Candida sphaerica).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC   Saccharomycetales; Saccharomycetaceae; Kluyveromyces.
OX   NCBI_TaxID=284590;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37;
RX   PubMed=15229592; DOI=10.1038/nature02579;
RA   Dujon B., Sherman D., Fischer G., Durrens P., Casaregola S., Lafontaine I.,
RA   de Montigny J., Marck C., Neuveglise C., Talla E., Goffard N., Frangeul L.,
RA   Aigle M., Anthouard V., Babour A., Barbe V., Barnay S., Blanchin S.,
RA   Beckerich J.-M., Beyne E., Bleykasten C., Boisrame A., Boyer J.,
RA   Cattolico L., Confanioleri F., de Daruvar A., Despons L., Fabre E.,
RA   Fairhead C., Ferry-Dumazet H., Groppi A., Hantraye F., Hennequin C.,
RA   Jauniaux N., Joyet P., Kachouri R., Kerrest A., Koszul R., Lemaire M.,
RA   Lesur I., Ma L., Muller H., Nicaud J.-M., Nikolski M., Oztas S.,
RA   Ozier-Kalogeropoulos O., Pellenz S., Potier S., Richard G.-F.,
RA   Straub M.-L., Suleau A., Swennen D., Tekaia F., Wesolowski-Louvel M.,
RA   Westhof E., Wirth B., Zeniou-Meyer M., Zivanovic Y., Bolotin-Fukuhara M.,
RA   Thierry A., Bouchier C., Caudron B., Scarpelli C., Gaillardin C.,
RA   Weissenbach J., Wincker P., Souciet J.-L.;
RT   "Genome evolution in yeasts.";
RL   Nature 430:35-44(2004).
CC   -!- FUNCTION: Required for the processing of the 20S rRNA-precursor to
CC       mature 18S rRNA in a late step of the maturation of 40S ribosomal
CC       subunits. Has a physiological role leading to 18S rRNA stability (By
CC       similarity). {ECO:0000250}.
CC   -!- SUBUNIT: Component of the small ribosomal subunit. Mature ribosomes
CC       consist of a small (40S) and a large (60S) subunit. The 40S subunit
CC       contains about 33 different proteins and 1 molecule of RNA (18S). The
CC       60S subunit contains about 49 different proteins and 3 molecules of RNA
CC       (25S, 5.8S and 5S).
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the eukaryotic ribosomal protein eS21 family.
CC       {ECO:0000305}.
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DR   EMBL; CR382121; CAH02841.1; -; Genomic_DNA.
DR   RefSeq; XP_451253.1; XM_451253.1.
DR   PDB; 3J80; EM; 3.75 A; V=1-87.
DR   PDB; 3J81; EM; 4.00 A; V=1-87.
DR   PDB; 3JAM; EM; 3.46 A; V=1-87.
DR   PDB; 3JAP; EM; 4.90 A; V=1-87.
DR   PDB; 3JAQ; EM; 6.00 A; V=1-87.
DR   PDB; 5IT7; EM; 3.60 A; V=1-87.
DR   PDB; 5IT9; EM; 3.80 A; V=1-87.
DR   PDB; 6FYX; EM; 3.05 A; V=1-87.
DR   PDB; 6FYY; EM; 3.05 A; V=1-87.
DR   PDB; 6GSM; EM; 5.15 A; V=1-87.
DR   PDB; 6GSN; EM; 5.75 A; V=1-87.
DR   PDB; 6UZ7; EM; 3.60 A; V=1-87.
DR   PDBsum; 3J80; -.
DR   PDBsum; 3J81; -.
DR   PDBsum; 3JAM; -.
DR   PDBsum; 3JAP; -.
DR   PDBsum; 3JAQ; -.
DR   PDBsum; 5IT7; -.
DR   PDBsum; 5IT9; -.
DR   PDBsum; 6FYX; -.
DR   PDBsum; 6FYY; -.
DR   PDBsum; 6GSM; -.
DR   PDBsum; 6GSN; -.
DR   PDBsum; 6UZ7; -.
DR   SMR; Q6CXT6; -.
DR   STRING; 28985.XP_451253.1; -.
DR   EnsemblFungi; CAH02841; CAH02841; KLLA0_A05700g.
DR   GeneID; 2896593; -.
DR   KEGG; kla:KLLA0_A05700g; -.
DR   eggNOG; KOG3486; Eukaryota.
DR   HOGENOM; CLU_167122_2_0_1; -.
DR   InParanoid; Q6CXT6; -.
DR   OMA; ALCGYIR; -.
DR   Proteomes; UP000000598; Chromosome A.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005840; C:ribosome; IEA:UniProtKB-KW.
DR   GO; GO:0003735; F:structural constituent of ribosome; IEA:InterPro.
DR   GO; GO:0006364; P:rRNA processing; IEA:UniProtKB-KW.
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   1: Evidence at protein level;
KW   3D-structure; Cytoplasm; Reference proteome; Ribonucleoprotein;
KW   Ribosomal protein; rRNA processing.
FT   CHAIN           1..87
FT                   /note="40S ribosomal protein S21"
FT                   /id="PRO_0000194758"
FT   TURN            18..20
FT                   /evidence="ECO:0007744|PDB:3JAM"
FT   STRAND          32..37
FT                   /evidence="ECO:0007744|PDB:3JAM"
FT   STRAND          50..55
FT                   /evidence="ECO:0007744|PDB:3JAM"
FT   HELIX           57..62
FT                   /evidence="ECO:0007744|PDB:3JAM"
FT   HELIX           65..73
FT                   /evidence="ECO:0007744|PDB:3JAM"
FT   TURN            74..77
FT                   /evidence="ECO:0007744|PDB:3JAM"
FT   STRAND          78..83
FT                   /evidence="ECO:0007744|PDB:3JAM"
SQ   SEQUENCE   87 AA;  9785 MW;  D97215AA1AA01F5E CRC64;
     MENDKGQLVE LYVPRKCSAT NRIIKAKDHS SVQINIAQVD EEGRAIPGEY VTYALSGYIR
     ARGEADDSLN RLAQQDGLLK NVWSYSR
//
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