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CATH Superfamily 2.40.50.140

Nucleic acid-binding proteins

The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
Nucleic acid-binding proteins
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 68014: Ribosomal protein S12 methylthiotransferase RimO

There are 1 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
[Ribosomal protein S12] (aspartate(89)-C(3))-methylthiotransferase. [EC: 2.8.4.4]
L-aspartate-[ribosomal protein S12] + sulfur-(sulfur carrier) + 2 S-adenosyl-L-methionine = 3-methylthio-L-aspartate-[ribosomal protein S12] + S-adenosyl-L-homocysteine + (sulfur carrier) + L-methionine + 5'-deoxyadenosine.
  • This bacterial enzyme binds two [4Fe-4S] clusters.
  • A bridge of five sulfur atoms is formed between the free Fe atoms of the two [4Fe-4S] clusters.
  • In the first reaction the enzyme transfers a methyl group from AdoMet to the external sulfur ion of the sulfur bridge.
  • In the second reaction the enzyme catalyzes the reductive fragmentation of a second molecule of AdoMet, yielding a 5'-deoxyadenosine radical, which then attacks the methylated sulfur atom of the polysulfide bridge, resulting in the transfer of a methylthiol group to aspartate(89) (Escherichia coli numbering).
  • The enzyme is a member of the superfamily of S-adenosyl-L-methionine- dependent radical (radical AdoMet) enzymes.
 13 A0A085B491 A0A0E1YPY7 A0A1J4X921 D1YCP9 D4HDG5 E4HMJ5 E6D5U3 F1UGM1 F3P0E7 F9NTK9
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