ISDA

Deposition Date 2020-07-27

Release Date 2021-08-04

Last Version Date 2022-05-04

Entry Detail

PDB ID:

6ZW6

Keywords:

LIPID BINDING PROTEIN

Title:

C16 symmetry: Bacterial Vipp1 and PspA are members of the ancient ESCRT-III membrane-remodeling superfamily.

Biological Source:

Source Organism:

Nostoc punctiforme (Taxon ID: 272131)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

7.40 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:vipp1
Gene (Uniprot):vipp1
Chain IDs:A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U (auth: V), V (auth: W), W (auth: X), X (auth: Y), Y (auth: Z), Z (auth: AA), AA (auth: BA), BA (auth: CA), CA (auth: DA), DA (auth: EA), EA (auth: FA), FA (auth: GA), GA (auth: HA), HA (auth: IA), IA (auth: JA), JA (auth: KA), KA (auth: LA), LA (auth: MA), MA (auth: NA), NA (auth: OA), OA (auth: PA), PA (auth: QA), QA (auth: RA), RA (auth: SA), SA (auth: TA), TA (auth: UA), UA (auth: VA), VA (auth: WA), WA (auth: XA), XA (auth: YA), YA (auth: ZA), ZA (auth: AB), AB (auth: BB), BB (auth: CB), CB (auth: DB), DB (auth: EB), EB (auth: FB), FB (auth: GB), GB (auth: HB), HB (auth: IB), IB (auth: JB), JB (auth: KB), KB (auth: LB), LB (auth: MB), MB (auth: NB), NB (auth: OB), OB (auth: PB), PB (auth: QB), QB (auth: RB), RB (auth: SB), SB (auth: TB), TB (auth: UB), UB (auth: VB), VB (auth: WB), WB (auth: XB), XB (auth: YB), YB (auth: ZB), ZB (auth: AC), AC (auth: BC), BC (auth: CC), CC (auth: DC), DC (auth: EC), EC (auth: FC), FC (auth: GC), GC (auth: HC), HC (auth: IC), IC (auth: JC), JC (auth: KC), KC (auth: LC), LC (auth: MC), MC (auth: NC), NC (auth: OC), OC (auth: PC), PC (auth: QC), QC (auth: RC), RC (auth: SC), SC (auth: TC), TC (auth: UC), UC (auth: VC), VC (auth: WC), WC (auth: XC), XC (auth: YC), YC (auth: ZC), ZC (auth: AD), AD (auth: BD), BD (auth: CD), CD (auth: DD), DD (auth: ED), ED (auth: FD), FD (auth: GD), GD (auth: HD), HD (auth: ID)
Chain Length:258
Number of Molecules:112
Biological Source:Nostoc punctiforme

UniProt ID:B2J6D9 Pfam ID:PF04012

Ligand Molecules

Primary Citation

Bacterial Vipp1 and PspA are members of the ancient ESCRT-III membrane-remodeling superfamily.

Liu, J, Tassinari, M, Souza, D.P, Naskar, S, Noel, J.K, Bohuszewicz, O, Buck, M, Williams, T.A, Baum, B, Low, H.H.Show

Cell 184 3660 3673.e18 (2021)

PMID: 34166615 DOI: 10.1016/j.cell.2021.05.041

Abstact

Membrane remodeling and repair are essential for all cells. Proteins that perform these functions include Vipp1/IM30 in photosynthetic plastids, PspA in bacteria, and ESCRT-III in eukaryotes. Here, using a combination of evolutionary and structural analyses, we show that these protein families are homologous and share a common ancient evolutionary origin that likely predates the last universal common ancestor. This homology is evident in cryo-electron microscopy structures of Vipp1 rings from the cyanobacterium Nostoc punctiforme presented over a range of symmetries. Each ring is assembled from rungs that stack and progressively tilt to form dome-shaped curvature. Assembly is facilitated by hinges in the Vipp1 monomer, similar to those in ESCRT-III proteins, which allow the formation of flexible polymers. Rings have an inner lumen that is able to bind and deform membranes. Collectively, these data suggest conserved mechanistic principles that underlie Vipp1, PspA, and ESCRT-III-dependent membrane remodeling across all domains of life.

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Primary Citation of related structures