AC   MF_00501;
DC   Protein; auto
c?   <OC:Bacteria> or <OG:Chloroplast>
TR   HAMAP; MF_00501; -; 1; level=0
XX
Names: Ribosomal_bL31_1
XX
case <OC:Bacteria> and not <OC:Cyanobacteriota>
ID   RL31
DE   RecName: Full=Large ribosomal subunit protein bL31;
GN   Name=rpmE;
else case <OC:Cyanobacteriota>
ID   RL31
DE   RecName: Full=Large ribosomal subunit protein bL31;
GN   Name=rpmE; Synonyms=rpl31;
else case <OG:Chloroplast>
ID   RK31
DE   RecName: Full=Large ribosomal subunit protein bL31c;
GN   Name=rpl31;
end case
XX
CC   -!- FUNCTION: Binds the 23S rRNA.
case <FTGroup:1>
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC       Note=Binds 1 zinc ion per subunit.;
end case
CC   -!- SUBUNIT: Part of the 50S ribosomal subunit.
case <OG:Chloroplast>
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast.
end case
CC   -!- SIMILARITY: Belongs to the bacterial ribosomal protein bL31 family.
CC       Type A subfamily.
XX
DR   Pfam; PF01197; Ribosomal_L31; 1; trigger=no
DR   PRINTS; PR01249; RIBOSOMALL31; 1; trigger=no
DR   NCBIfam; TIGR00105; L31; 1; trigger=no
DR   PROSITE; PS01143; RIBOSOMAL_L31; 1; trigger=no
XX
case <FT:5>
KW   Acetylation
end case
KW   Ribonucleoprotein
KW   Ribosomal protein
KW   RNA-binding
KW   rRNA-binding
case <FTGroup:1>
KW   Zinc
KW   Metal-binding
end case
XX
GO   GO:0006412; P:translation
case <OG:Chloroplast>
GO   GO:0009507; C:chloroplast
end case
XX
FT   From: RL31_BACSU (Q03223)
FT   BINDING         16
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT   Optional; Group: 1; Condition: C
FT   BINDING         18
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT   Optional; Group: 1; Condition: C
FT   BINDING         36
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT   Optional; Group: 1; Condition: C
FT   BINDING         39
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT   Optional; Group: 1; Condition: C
FT   From: RL31_ECOLI (P0A7M9)
case <OC:Escherichia> or <OC:Shigella>
FT   MOD_RES         8
FT                   /note="N6-acetyllysine"
FT   Condition: K
end case
XX
Size: 65-97;
Related: MF_00502!;
Template: Q03223; Q9RW44;
Scope:
 Bacteria
 Plastid
Fusion:
 Nter: None
 Cter: <Unknown>
Duplicate: None
Plasmid: None
Comments: Fused with an unknown domain in ANADE.
 In some bacteria, for example E.coli and B.subtilis, there are
 paralogous RL31 proteins. In most bacteria with both proteins the protein
 that corresponds to this family (RL31, rpmE) is thought to be able to bind
 zinc, while the other member (RL31B, MF_00502, rpmE2) is not able to bind
 zinc. It has been suggested based on this observation and experiments in B.
 subtilis that the non-zinc-binding protein will only be made under
 conditions of zinc-starvation, allowing the cell to economize on the trace
 metal, see:
 PubMed=11574053;
 Makarova K.S., Ponomarev V.A., Koonin E.V.;
 "Two C or not two C: recurrent disruption of Zn-ribbons, gene
 duplication, lineage-specific gene loss, and horizontal gene transfer
 in evolution of bacterial ribosomal proteins.";
 Genome Biol. 2:RESEARCH 0033-RESEARCH 0033(2001).
 and
 PubMed=12904577; DOI=10.1073/pnas.1733691100;
 Panina E.M., Mironov A.A., Gelfand M.S.;
 "Comparative genomics of bacterial zinc regulons: enhanced ion
 transport, pathogenesis, and rearrangement of ribosomal proteins.";
 Proc. Natl. Acad. Sci. U.S.A. 100:9912-9917(2003).
XX
# Revision 1.40 2023/09/22
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