AC   MF_00872;
DC   Protein; auto
TR   HAMAP; MF_00872; -; 1; level=0
XX
Names: Ribosomal_aS21
XX
ID   RS21
DE   RecName: Full=Small ribosomal subunit protein aS21;
GN   Name=rps21a;
XX
CC   -!- FUNCTION: Component of the small ribosomal subunit. The ribosome is a
CC       large ribonucleoprotein complex responsible for the synthesis of
CC       proteins in the cell.
case <FTGroup:1> and <FTGroup:2>
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC       Note=Binds 2 Zn(2+) ions per subunit.;
else case <FTGroup:2> and not <FTGroup:1>
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC       Note=Binds 1 Zn(2+) ion per subunit.;
end case
CC   -!- SUBUNIT: Component of the 30S small ribosomal subunit.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm.
CC   -!- SIMILARITY: Belongs to the archaeal ribosomal protein aS21 family.
XX
DR   Pfam; PF07754; HVO_2753_ZBP; 1; trigger=no
DR   NCBIfam; NF011481; PRK14890.1; 1; trigger=no
DR   NCBIfam; NF041909; HVO_2753; 0-1; trigger=no
XX
KW   Cytoplasm
KW   RNA-binding
KW   Ribonucleoprotein
KW   Ribosomal protein
case <FTGroup:1> or <FTGroup:2>
KW   Metal-binding
KW   Zinc
end case
KW   rRNA-binding
XX
GO   GO:0005737; C:cytoplasm
GO   GO:0006412; P:translation
case <FTGroup:1> or <FTGroup:2>
GO   GO:0008270; F:zinc ion binding
end case
XX
FT   From: RS21_SACS2 (Q980V0)
FT   BINDING         16
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="#1"
FT   Optional; Group: 1; Condition: C
FT   BINDING         19
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="#1"
FT   Optional; Group: 1; Condition: C
FT   BINDING         34
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="#2"
FT   Group: 2; Condition: C
FT   BINDING         37
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="#2"
FT   Group: 2; Condition: C
FT   BINDING         45
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="#1"
FT   Optional; Group: 1; Condition: [CD]
FT   BINDING         48
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="#1"
FT   Optional; Group: 1; Condition: C
FT   BINDING         57
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="#2"
FT   Group: 2; Condition: C
FT   BINDING         60
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="#2"
FT   Group: 2; Condition: C
XX
Size: 50-100;
Related: None;
Template: Q980V0; Q5JFE2; D4GWB3; Q8TZM6; A0A218P055;
Scope:
 Archaea
Fusion:
 Nter: None
 Cter: None
Duplicate: None
Plasmid: None
Comments: None
XX
# Version: 3
# Last updated date: 2025-10-14
# Created date: 2025-10-06
//