DNA terminal protein - P03681 (TERM_BPPH2)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P03681: 1
 
Function
Acts as a primer for DNA elongation during viral genomic replication (PubMed:6813861). Acts as the small terminase protein during packaging (PubMed:18674782). Recruits the phage DNA polymerase to the bacterial nucleoid (PubMed:20823229). Primer terminal protein (TP) is covalently linked to the 5'-ends of both strands of the genome through a phosphodiester bond between the beta-hydroxyl group of a serine residue and the 5'-phosphate of the terminal deoxyadenylate (dAMP) (PubMed:6813861). To start replication, the DNA polymerase forms a heterodimer with a free TP that recognizes the replication origins at both 5' ends of the linear chromosome, and initiates replication using as primer the OH-group of Ser-232 of the TP (PubMed:22210885, PubMed:25081208). Since the polymerase initiates the replication on the second thymine, the TP-dAMP initiation product slides backwards to recover the template information of the first nucleotide (PubMed:19011105). UniProt
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Subunit Structure
Interacts with the viral polymerase; this interaction allows the initiation of TP-primed DNA replication at both viral DNA ends (PubMed:22210885). Binds to ssDNA (PubMed:6779279). Interacts with the replication protein p1 (PubMed:11032825). Part of a DNA-gp3-gp16 complex (PubMed:9086269). UniProt
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Data origin/color codes
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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