ISDA

Deposition Date 2017-09-27

Release Date 2017-10-25

Last Version Date 2024-11-13

Entry Detail

PDB ID:

6EKV

Keywords:

LIPID BINDING PROTEIN

Title:

Structure of OrfX2 from Clostridium botulinum A2

Biological Source:

Source Organism:

Clostridium botulinum (strain Kyoto / Type A2) (Taxon ID: 536232)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.10 Å

R-Value Free:

0.25

R-Value Work:

0.20

R-Value Observed:

0.21

Space Group:

P 1 21 1

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Toxin complex component ORF-X2
Gene (Uniprot):orfX2
Chain IDs:A
Chain Length:750
Number of Molecules:1
Biological Source:Clostridium botulinum (strain Kyoto / Type A2)

UniProt ID:C1FUH4 Pfam ID:PF06597

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
MSE	A	MET	modified residue

Ligand Molecules

SO4

Primary Citation

Crystal structures of OrfX2 and P47 from a Botulinum neurotoxin OrfX-type gene cluster.

Gustafsson, R, Berntsson, R.P, Martinez-Carranza, M, El Tekle, G, Odegrip, R, Johnson, E.A, Stenmark, P.Show

FEBS Lett. 591 3781 3792 (2017)

PMID: 29067689 DOI: 10.1002/1873-3468.12889

Abstact

Botulinum neurotoxins are highly toxic substances and are all encoded together with one of two alternative gene clusters, the HA or the OrfX gene cluster. Very little is known about the function and structure of the proteins encoded in the OrfX gene cluster, which in addition to the toxin contains five proteins (OrfX1, OrfX2, OrfX3, P47, and NTNH). We here present the structures of OrfX2 and P47, solved to 2.1 and 1.8 Å, respectively. We show that they belong to the TULIP protein superfamily, which are often involved in lipid binding. OrfX1 and OrfX2 were both found to bind phosphatidylinositol lipids.

Legend

Protein

Chemical

Disease

Primary Citation of related structures