2NCL image
Entry Detail
PDB ID:
2NCL
Keywords:
Title:
Solution structure of BOLA3 from Homo sapiens
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2016-04-11
Release Date:
2016-09-07
Method Details:
Experimental Method:
Conformers Calculated:
80
Conformers Submitted:
20
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:BolA-like protein 3
Chain IDs:A
Chain Length:81
Number of Molecules:1
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Mitochondrial Bol1 and Bol3 function as assembly factors for specific iron-sulfur proteins.
Elife 5 ? ? (2016)
PMID: 27532772 DOI: 10.7554/eLife.16673

Abstact

Assembly of mitochondrial iron-sulfur (Fe/S) proteins is a key process of cells, and defects cause many rare diseases. In the first phase of this pathway, ten Fe/S cluster (ISC) assembly components synthesize and insert [2Fe-2S] clusters. The second phase is dedicated to the assembly of [4Fe-4S] proteins, yet this part is poorly understood. Here, we characterize the BOLA family proteins Bol1 and Bol3 as specific mitochondrial ISC assembly factors that facilitate [4Fe-4S] cluster insertion into a subset of mitochondrial proteins such as lipoate synthase and succinate dehydrogenase. Bol1-Bol3 perform largely overlapping functions, yet cannot replace the ISC protein Nfu1 that also participates in this phase of Fe/S protein biogenesis. Bol1 and Bol3 form dimeric complexes with both monothiol glutaredoxin Grx5 and Nfu1. Complex formation differentially influences the stability of the Grx5-Bol-shared Fe/S clusters. Our findings provide the biochemical basis for explaining the pathological phenotypes of patients with mutations in BOLA3.

Legend

Protein

Chemical

Disease

Primary Citation of related structures