A0A846MGF4 · A0A846MGF4_9BACI

  • Protein
    Bifunctional NAD(P)H-hydrate repair enzyme
  • Gene
    nnrE
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    4/5

Function

function

Bifunctional enzyme that catalyzes the epimerization of the S- and R-forms of NAD(P)HX and the dehydration of the S-form of NAD(P)HX at the expense of ADP, which is converted to AMP. This allows the repair of both epimers of NAD(P)HX, a damaged form of NAD(P)H that is a result of enzymatic or heat-dependent hydration.
Catalyzes the dehydration of the S-form of NAD(P)HX at the expense of ADP, which is converted to AMP. Together with NAD(P)HX epimerase, which catalyzes the epimerization of the S- and R-forms, the enzyme allows the repair of both epimers of NAD(P)HX, a damaged form of NAD(P)H that is a result of enzymatic or heat-dependent hydration.
Catalyzes the epimerization of the S- and R-forms of NAD(P)HX, a damaged form of NAD(P)H that is a result of enzymatic or heat-dependent hydration. This is a prerequisite for the S-specific NAD(P)H-hydrate dehydratase to allow the repair of both epimers of NAD(P)HX.

Caution

The sequence shown here is derived from an EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is preliminary data.

Catalytic activity

Cofactor

Protein has several cofactor binding sites:
K+ (UniProtKB | Rhea| CHEBI:29103 )

Note: Binds 1 potassium ion per subunit.
Mg2+ (UniProtKB | Rhea| CHEBI:18420 )

Features

Showing features for binding site.

TypeIDPosition(s)Description
Binding site57-61(6S)-NADPHX (UniProtKB | ChEBI)
Binding site58K+ (UniProtKB | ChEBI)
Binding site127K+ (UniProtKB | ChEBI)
Binding site131-137(6S)-NADPHX (UniProtKB | ChEBI)
Binding site142(6S)-NADPHX (UniProtKB | ChEBI)
Binding site160(6S)-NADPHX (UniProtKB | ChEBI)
Binding site163K+ (UniProtKB | ChEBI)
Binding site261(6S)-NADPHX (UniProtKB | ChEBI)
Binding site327(6S)-NADPHX (UniProtKB | ChEBI)
Binding site377(6S)-NADPHX (UniProtKB | ChEBI)
Binding site414-418AMP (UniProtKB | ChEBI)
Binding site443AMP (UniProtKB | ChEBI)
Binding site444(6S)-NADPHX (UniProtKB | ChEBI)

GO annotations

AspectTerm
Molecular FunctionADP-dependent NAD(P)H-hydrate dehydratase activity
Molecular FunctionATP binding
Molecular Functionmetal ion binding
Molecular FunctionNADHX epimerase activity
Molecular FunctionNADPHX epimerase activity
Biological Processmetabolite repair
Biological Processnicotinamide nucleotide metabolic process

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Bifunctional NAD(P)H-hydrate repair enzyme
  • Alternative names
    • Nicotinamide nucleotide repair protein

Including 2 domains:

  • Recommended name
    ADP-dependent (S)-NAD(P)H-hydrate dehydratase
  • EC number
  • Alternative names
    • ADP-dependent NAD(P)HX dehydratase
  • Recommended name
    NAD(P)H-hydrate epimerase
  • EC number

Gene names

    • Name
      nnrE
    • Synonyms
      nnrD
    • ORF names
      BDD39_001433

Organism names

  • Taxonomic identifier
  • Strain
    • DSM 4749
  • Taxonomic lineage
    Bacteria > Bacillota > Bacilli > Bacillales > Bacillaceae > Saccharococcus

Accessions

  • Primary accession
    A0A846MGF4

Proteomes

Interaction

Subunit

Homotetramer.

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain9-216YjeF N-terminal
Domain226-504YjeF C-terminal

Sequence similarities

Belongs to the NnrD/CARKD family.
Belongs to the NnrE/AIBP family.
In the C-terminal section; belongs to the NnrD/CARKD family.
In the N-terminal section; belongs to the NnrE/AIBP family.

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    513
  • Mass (Da)
    55,056
  • Last updated
    2021-09-29 v1
  • Checksum
    2D6DC3B2C0428808
MHIVTAAEMYEIDRDTVEQIGISADSLMEDAGQALFHVLRERIPRSARVAVLAGTGNNGGDGLVVARMFKSNGYDVDVWLVPPKEKVKGAAKTALEVYERSGYDWKPYAGNEQAFAAHILQYDAIIDALLGIGIKGEVRPPYREIIELVNRSRAIVYAIDIPSGTPADGGEAETAVRADATITIQCPKLGAYTFPTADYYGELLLVDIGIPPLAVKRNAAPRFVWEEDDVVRTLPKRKRSSHKGTHGKLLVVGGSRAMTGAVTLTAKAALRSGAGLLTMAVPDDIYSVVANRVPEAMYYPCPARDGAFSGAMDVSALDIDAVAIGPGLGRTDGVRDLVSNIVRQPVPLVIDADALFFWNEYAALIRERKAATVVTPHPGEMARMLGLSIRDIEGDRFGTSKRLATEYGIYVVLKGPYTIVTTPDGSQYVNTTGNPALAKGGSGDVLTGIVSAFLMQHHSAQEAISNAVWIHGKAADMLVERGHSQWDVLAGDLIEAIPAALSYVQEKQKGDMG

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
JAASRS010000001
EMBL· GenBank· DDBJ
NIK14923.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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