Function and Biology

Cocrystal structure of an RNA sulfuration enzyme MnmA and tRNA-Glu in the adenylated intermediate state

Source organism: Escherichia coli
Biochemical function: tRNA-uridine 2-sulfurtransferase activity
Biological process: tRNA processing
Cellular component: sulfurtransferase complex

EC 2.8.1.13: tRNA-uridine 2-sulfurtransferase

Reaction catalysed:
A [protein]-S-sulfanyl-L-cysteine + uridine(34) in tRNA + ATP + reduced acceptor = a [protein]-L-cysteine + 2-thiouridine(34) in tRNA + AMP + diphosphate + acceptor
Systematic name:
[Protein]-S-sulfanyl-L-cysteine:tRNA (uracil(34)-2-O)-sulfurtransferase
Alternative Name(s):
  • MnmA (gene name)

Sequence families

Pfam Protein families (Pfam)
PF20258
Domain description: Aminomethyltransferase beta-barrel domain
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA
The deposited structure of PDB entry 2deu contains 2 copies of Pfam domain PF20258 (Aminomethyltransferase beta-barrel domain) in tRNA-specific 2-thiouridylase MnmA. Showing 1 copy in chain C [auth A].

PF20259
Domain description: tRNA methyl transferase PRC-barrel domain
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA
The deposited structure of PDB entry 2deu contains 2 copies of Pfam domain PF20259 (tRNA methyl transferase PRC-barrel domain) in tRNA-specific 2-thiouridylase MnmA. Showing 1 copy in chain C [auth A].

PF03054
Domain description: tRNA methyl transferase HUP domain
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA
The deposited structure of PDB entry 2deu contains 2 copies of Pfam domain PF03054 (tRNA methyl transferase HUP domain) in tRNA-specific 2-thiouridylase MnmA. Showing 1 copy in chain C [auth A].

Rfam RNA family (Rfam)
RF00005
Domain description: tRNA
Occurring in:
  1. tRNA
The deposited structure of PDB entry 2deu contains 2 copies of Rfam domain RF00005 (tRNA) in tRNA. Showing 1 copy in chain A [auth C].

InterPro InterPro annotations
IPR004506
Domain description: tRNA-specific 2-thiouridylase
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA
IPR046885
Domain description: tRNA-specific 2-thiouridylase MnmA-like, C-terminal domain
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA
IPR023382
Domain description: tRNA-specific 2-thiouridylase MnmA-like, central domain superfamily
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA
IPR046884
Domain description: tRNA-specific 2-thiouridylase MnmA-like, central domain
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA
IPR014729
Domain description: Rossmann-like alpha/beta/alpha sandwich fold
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA

Structure domains

CATH CATH domains
2.40.30.10
Class: Mainly Beta
Architecture: Beta Barrel
Topology: Elongation Factor Tu (Ef-tu); domain 3
Homology: Translation factors
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA
The deposited structure of PDB entry 2deu contains 2 copies of CATH domain 2.40.30.10 (Elongation Factor Tu (Ef-tu); domain 3) in tRNA-specific 2-thiouridylase MnmA. Showing 1 copy in chain C [auth A].
2.30.30.280
Class: Mainly Beta
Architecture: Roll
Topology: SH3 type barrels.
Homology: Adenine nucleotide alpha hydrolases-like domains
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA
The deposited structure of PDB entry 2deu contains 2 copies of CATH domain 2.30.30.280 (SH3 type barrels.) in tRNA-specific 2-thiouridylase MnmA. Showing 1 copy in chain C [auth A].
3.40.50.620
Class: Alpha Beta
Architecture: 3-Layer(aba) Sandwich
Topology: Rossmann fold
Homology: HUPs
Occurring in:
  1. tRNA-specific 2-thiouridylase MnmA
The deposited structure of PDB entry 2deu contains 2 copies of CATH domain 3.40.50.620 (Rossmann fold) in tRNA-specific 2-thiouridylase MnmA. Showing 1 copy in chain C [auth A].