Protein: Para-Rep C1 (Rep1) (EC 2.7.7.-) (EC 3.1.21.-) (EC 3.6.1.-) (ATP-dependent helicase C1) (Replication-associated protein of non-essential DNA C1) (Q66862)
Organism: Faba bean necrotic yellows C1 alphasatellite (FBNYC1A)
Function: Initiates and terminates the replication only of its own subviral DNA molecule. The closed circular ssDNA genome is first converted to a superhelical dsDNA. Rep binds a specific hairpin at the genome origin of replication. Introduces an endonucleolytic nick within the intergenic region of the genome, 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.
Subcellular location: Host nucleus {ECO:0000305}.
Sequence: MACSNWVFTRNFQGALPLLSFDERVQYAVWQHERGTHDHIQGVIQLKKKARFSTVKEIIGGNPHVEKMKGTIEEASAYVQKEETRVAGPWSYGDLLKRGSHRRKTMERYLEDPEEMQLKDPDTALRCNAKRLKEDFMKEKTKLQLRPWQKELHDLILTEPDDRTIIWVYGPDGGEGKSMFAKELIKYGWFYTAGGKTQDILYMYAQDPERNIAFDVPRCSSEMMNYQAMEMMKNRCFASTKYRSVDLCCNKNVHLVVFANVAYDPTKISEDRIVIINC
InterPro domains: - IPR049912: CRESS-DNA virus replication initiator protein, endonuclease domain (domain) [1-95]
- IPR000605: Helicase, superfamily 3, single-stranded DNA/RNA virus (domain) [166-250]
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0003824 (catalytic activity), GO:0016740 (transferase activity), GO:0016772 (transferase activity, transferring phosphorus-containing groups), GO:0016779 (nucleotidyltransferase activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0016032 (viral process), GO:0009058 (biosynthetic process), GO:0044237 (cellular metabolic process), GO:0019058 (viral life cycle), GO:0006807 (nitrogen compound metabolic process), GO:0019079 (viral genome replication), GO:0071704 (organic substance metabolic process), GO:0044238 (primary metabolic process), GO:1901360 (organic cyclic compound metabolic process), GO:1901576 (organic substance biosynthetic process), GO:0039693 (viral DNA genome replication), GO:0006139 (nucleobase-containing compound metabolic process), GO:0046483 (heterocycle metabolic process), GO:0044249 (cellular biosynthetic process), GO:0006725 (cellular aromatic compound metabolic process), GO:0034641 (cellular nitrogen compound metabolic process), GO:0044260 (cellular macromolecule metabolic process), GO:0043170 (macromolecule metabolic process), GO:0009059 (macromolecule biosynthetic process), GO:1901362 (organic cyclic compound biosynthetic process), GO:0090304 (nucleic acid metabolic process), GO:0019438 (aromatic compound biosynthetic process), GO:0018130 (heterocycle biosynthetic process), GO:0006259 (DNA metabolic process), GO:0044271 (cellular nitrogen compound biosynthetic process), GO:0039687 (viral DNA strand displacement replication), GO:0034654 (nucleobase-containing compound biosynthetic process), GO:0071897 (DNA biosynthetic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0018995 (host cellular component), GO:0033643 (host cell part), GO:0043657 (host cell), GO:0033646 (host intracellular part), GO:0043656 (host intracellular region), GO:0033647 (host intracellular organelle), GO:0030430 (host cell cytoplasm), GO:0033648 (host intracellular membrane-bounded organelle), GO:0042025 (host cell nucleus)