A0A7D6BY77 · A0A7D6BY77_9GEMI

  • Protein
    Replication-associated protein
  • Gene
    C1
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    3/5

Function

function

Essential for the replication of viral ssDNA. The closed circular ssDNA genome is first converted to a superhelical dsDNA. Rep binds a specific region at the genome origin of replication. It introduces an endonucleolytic nick within the conserved sequence 5'-TAATATTAC-3' in the intergenic region of the genome present in all geminiviruses, thereby initiating the rolling circle replication (RCR). Following cleavage, binds covalently to the 5'-phosphate of DNA as a tyrosyl ester. The cleavage gives rise to a free 3'-OH that serves as a primer for the cellular DNA polymerase. The polymerase synthesizes the + strand DNA by rolling circle mechanism. After one round of replication, a Rep-catalyzed nucleotidyl transfer reaction releases a circular single-stranded virus genome, thereby terminating the replication. Displays origin-specific DNA cleavage, nucleotidyl transferase, ATPase and helicase activities.

Cofactor

Protein has several cofactor binding sites:
Mg2+ (UniProtKB | Rhea| CHEBI:18420 )

Mn2+ (UniProtKB | Rhea| CHEBI:29035 )

Note: Divalent metal cations, possibly Mg2+ or Mn2+.
Mn2+ (UniProtKB | Rhea| CHEBI:29035 )

Features

Showing features for binding site, active site.

Type
IDPosition(s)Description
Binding site50a divalent metal cation (UniProtKB | ChEBI)
Binding site58a divalent metal cation (UniProtKB | ChEBI)
Binding site60a divalent metal cation (UniProtKB | ChEBI)
Active site104For DNA cleavage activity
Binding site108a divalent metal cation (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componenthost cell nucleus
Molecular FunctionATP binding
Molecular FunctionDNA binding
Molecular Functionendodeoxyribonuclease activity, producing 5'-phosphomonoesters
Molecular Functionhelicase activity
Molecular Functionmetal ion binding
Molecular Functionnucleotidyltransferase activity
Molecular Functionstructural molecule activity
Biological ProcessDNA replication

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Replication-associated protein
  • EC number
  • Short names
    Rep

Gene names

    • Name
      C1
    • Synonyms
      rep

Organism names

  • Taxonomic identifier
  • Organism
  • Strain
    • IR:Jir:23Jir:Alf:17
  • Taxonomic lineage
    Viruses > Monodnaviria > Shotokuvirae > Cressdnaviricota > Repensiviricetes > Geplafuvirales > Geminiviridae > Turncurtovirus

Accessions

  • Primary accession
    A0A7D6BY77

Subcellular Location

Keywords

PTM/Processing

Keywords

Interaction

Subunit

Homooligomer. Rep binds to repeated DNA motifs (iterons). Forms the O-complex, which is a Rep-DNA complex involved in the initiation of RCR. Part of the C- and V-complexes which are RepA-Rep-DNA complexes involved in the c-sense and v-sense transcription.

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain9-117CRESS-DNA virus Rep endonuclease

Domain

There are 3 rolling circle replication (RCR) motifs. RCR-2 is probably involved in metal coordination. RCR-3 is required for phosphodiester bond cleavage for initiation of RCR.

Sequence similarities

Belongs to the geminiviridae Rep protein family.

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    373
  • Mass (Da)
    42,750
  • Last updated
    2020-12-02 v1
  • Checksum
    1D850545255596E5
MPRAPKQYRIQAKNIFLTYPHCSLSKEEALNQLQAIQCPSNKKFIRISRELHENGEPHLHVLIQFEGKVQLSNPRHFDLRNPNASRDFHPNLQGAKSSTDVKSYIEKDGDYLDWGEFQIDGRSARGGQQTANDACAEALNTGNTEAALAVIREKLPKEFIFQHHNLVTNLKCIFTPLKTQYIPKYTHNQFVLNDDILDWLEEFFEFIPDLNSPAGPGFYKLKEGVERPKSLILEGESRTGKTQWARSLSPKHNYIAGHLNFSLDTYSDDVSYNVIDDIEPQYLKMKHWKHLIGAQKEWQTNLKYGKPRVIKGGIPSIIICNPGPESSYESFLNKPENEALKSWTLQNSTFTRIDGPPFNYQSDIEAEEDQTTL

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
MT041691
EMBL· GenBank· DDBJ
QLJ85078.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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