A4YKP3 · GLND_BRASO

Function

function

Modifies, by uridylylation and deuridylylation, the PII regulatory proteins (GlnB and homologs), in response to the nitrogen status of the cell that GlnD senses through the glutamine level. Under low glutamine levels, catalyzes the conversion of the PII proteins and UTP to PII-UMP and PPi, while under higher glutamine levels, GlnD hydrolyzes PII-UMP to PII and UMP (deuridylylation). Thus, controls uridylylation state and activity of the PII proteins, and plays an important role in the regulation of nitrogen fixation and metabolism.

Catalytic activity

Cofactor

Mg2+ (UniProtKB | Rhea| CHEBI:18420 )

Activity regulation

Uridylyltransferase (UTase) activity is inhibited by glutamine, while glutamine activates uridylyl-removing (UR) activity.

GO annotations

AspectTerm
Molecular Function[protein-PII] uridylyltransferase activity
Molecular Functionphosphoric diester hydrolase activity
Biological Processnitrogen fixation
Biological Processregulation of nitrogen utilization

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Bifunctional uridylyltransferase/uridylyl-removing enzyme
  • Short names
    UTase/UR
  • Alternative names
    • Bifunctional [protein-PII] modification enzyme
    • Bifunctional nitrogen sensor protein

Including 2 domains:

  • Recommended name
    [Protein-PII] uridylyltransferase
  • EC number
  • Short names
    PII uridylyltransferase
    ; UTase
  • Recommended name
    [Protein-PII]-UMP uridylyl-removing enzyme
  • EC number
  • Short names
    UR

Gene names

    • Name
      glnD
    • Ordered locus names
      BRADO0530

Organism names

Accessions

  • Primary accession
    A4YKP3

Proteomes

PTM/Processing

Features

Showing features for chain.

TypeIDPosition(s)Description
ChainPRO_10000223281-931Bifunctional uridylyltransferase/uridylyl-removing enzyme

Interaction

Protein-protein interaction databases

Structure

Family & Domains

Features

Showing features for region, domain.

TypeIDPosition(s)Description
Region1-383Uridylyltransferase
Region384-739Uridylyl-removing
Domain499-622HD
Domain740-822ACT 1
Domain851-931ACT 2

Domain

Has four distinct domains: an N-terminal nucleotidyltransferase (NT) domain responsible for UTase activity, a central HD domain that encodes UR activity, and two C-terminal ACT domains that seem to have a role in glutamine sensing.

Sequence similarities

Belongs to the GlnD family.

Keywords

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    931
  • Mass (Da)
    104,696
  • Last updated
    2007-05-29 v1
  • Checksum
    EF1CED6FAB25A7D4
MDSVATDSKAFTSADFDSAGIAAAVDALAKQHSGREDMFRAAVVQFLKAELVKARAAAQAQLLQDRHGRHCAERLCVVQDEIIRILYAAATEHLYRSDVPSGAERMAVVATGGYGRGLMAPESDIDLLFILPYKQTAWGEQVAEAILYSLWDMGLKVGHATRSVDESIRQARGDMTIRTAILETRYLAGDKPLYDELVQRFDTEVVQGTAAEFVAAKLAEREERHRRGGQSRYLVEPNVKDGKGGLRDLHTLFWIAKYVYRVRETAELVERGVFDAHEYRTFRRCSDFLWSVRCNLHFVSGRPEERLSFDLQREIAVRLGYTSHPGMQDVERFMKHYFLVAKQVGNLTAILCAKLEDQQAKAAPVLSRMISRLTTGSTWRRVPESDDFIVDNNRINLAAPDVFKHDPVNLIRIFRLAQKNNLAFHPDAMRAVTRSLNMINAELRENPEANRLFMEILTSNDAETVLRRMNETGVLGHFISAFGRIVSMMQFNMYHHYTVDEHLIRCIGFLQEIERGGHDEFVLASDLMRKIRPEHRAVIYITVLLHDVAKGRPEDHSVAGAKIARRLCPRLGFNNADTELVAWLIEEHLTMSTVAQSRDLSDRRTIEKFAAVVQSVEQMKLLTILTTADIRGVGPGVWNGWKAQLLRTLYYETEPVLTGGFSEVNRAKRITAAQAEFRNAFTDWPEDELNTYIGRHYPAYWLKVELPRKIRHARFVRSSEDAGHKLAINVGFDPARGVTELTIFAMDHPWLLSIIAGACASAGANIVDAQIYTTTDGRALDTIAISREYERDEDEGRRATRIGETIEQVLEGKLRLPDAVARRTTRGKQHKAFSVEPEVSINNQWSELYTVIEVSGLDRPGLLYELTTAISKLNLNIASAHVATFGERARDVFYVTDLLGAQINAPTRQAAIKSALLHLLASEDAAAQPAA

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
CU234118
EMBL· GenBank· DDBJ
CAL74469.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

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