6N4V image
Deposition Date 2018-11-20
Release Date 2019-04-03
Last Version Date 2024-10-16
Entry Detail
PDB ID:
6N4V
Keywords:
VIRUS LIKE PARTICLE
Title:
CryoEM structure of Leviviridae PP7 WT coat protein dimer capsid (PP7PP7-WT)
Biological Source:
Source Organism:
Pseudomonas phage PP7 (Taxon ID: 12023)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
3.00 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
6N4V validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Coat protein
Chain IDs:A (auth: Af), B (auth: A), C (auth: B), D (auth: C), E (auth: D), F (auth: E), G (auth: F), H (auth: G), I (auth: H), J (auth: I), K (auth: J), L (auth: K), M (auth: L), N (auth: M), O (auth: N), P (auth: O), Q (auth: P), R (auth: Q), S (auth: R), T (auth: S), U (auth: T), V, W, X, Y, Z, AA, BA, CA, DA, EA, FA, GA, HA, IA, JA, KA, LA, MA, NA, OA, PA, QA, RA, SA, TA, UA, VA, WA, XA, YA, ZA, AB, BB, CB, DB, EB, FB, GB, HB, IB, JB, KB, LB, MB, NB, OB, PB, QB, RB, SB, TB, UB, VB, WB, XB, YB, ZB, AC, BC, CC, DC, EC, FC, GC, HC, IC, JC, KC, LC, MC, NC, OC, PC, QC, RC, SC, TC, UC, VC, WC, XC, YC, ZC, AD, BD, CD, DD, ED, FD, GD, HD, ID, JD, KD, LD, MD, ND, OD, PD
Chain Length:258
Number of Molecules:120
Biological Source:Pseudomonas phage PP7
UniProt ID:P03630 Pfam ID:PF09063
Ligand Molecules
NA
Primary Citation
Engineering the PP7 Virus Capsid as a Peptide Display Platform.
Acs Nano 13 4443 4454 (2019)
PMID: 30912918 DOI: 10.1021/acsnano.8b09683

Abstact

As self-assembling polyvalent nanoscale structures that can tolerate substantial genetic and chemical modification, virus-like particles are useful in a variety of fields. Here we describe the genetic modification and structural characterization of the Leviviridae PP7 capsid protein as a platform for the presentation of functional polypeptides. This particle was shown to tolerate the display of sequences from 1 kDa (a cell penetrating peptide) to 14 kDa (the Fc-binding double Z-domain) on its exterior surface as C-terminal genetic fusions to the coat protein. In addition, a dimeric construct allowed the presentation of exogenous loops between capsid monomers and the simultaneous presentation of two different peptides at different positions on the icosahedral structure. The PP7 particle is thereby significantly more tolerant of these types of polypeptide additions than Qβ and MS2, the other Leviviridae-derived VLPs in common use.

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Primary Citation of related structures
6N4V