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Angerer H, Schönborn S, Gorka J, Bahr U, Karas M, Wittig I, Heidler J, Hoffmann J, Morgner N, Zickermann V. Acyl modification and binding of mitochondrial ACP to multiprotein complexes. Biochim Biophys Acta Mol Cell Res 2017; 1864:1913-1920. [PMID: 28802701 DOI: 10.1016/j.bbamcr.2017.08.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 08/03/2017] [Accepted: 08/08/2017] [Indexed: 01/06/2023]
Abstract
The mitochondrial acyl carrier protein (ACPM/NDUFAB1) is a central element of the mitochondrial fatty acid synthesis type II machinery. Originally ACPM was detected as a subunit of respiratory complex I but the reason for the association with the large enzyme complex remained elusive. Complex I from the aerobic yeast Yarrowia lipolytica comprises two different ACPMs, ACPM1 and ACPM2. They are anchored to the protein complex by LYR (leucine-tyrosine-arginine) motif containing protein (LYRM) subunits LYRM3 (NDUFB9) and LYRM6 (NDUFA6). The ACPM1-LYRM6 and ACPM2-LYRM3 modules are essential for complex I activity and assembly/stability, respectively. We show that in addition to the complex I bound fraction, ACPM1 is present as a free matrix protein and in complex with the soluble LYRM4(ISD11)/NFS1 complex implicated in Fe-S cluster biogenesis. We show that the presence of a long acyl chain bound to the phosphopantetheine cofactor is important for docking ACPMs to protein complexes and we propose that association of ACPMs and LYRMs is universally based on a new protein-protein interaction motif.
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Affiliation(s)
- Heike Angerer
- Goethe University Frankfurt, Medical School, Institute of Biochemistry II, Structural Bioenergetics Group, Max-von-Laue Str. 9, 60438 Frankfurt, Germany.
| | - Stefan Schönborn
- Goethe University Frankfurt, Institute of Pharmaceutical Chemistry, Max-von-Laue Str. 9, 60438 Frankfurt, Germany
| | - Jan Gorka
- Goethe University Frankfurt, Institute of Pharmaceutical Chemistry, Max-von-Laue Str. 9, 60438 Frankfurt, Germany
| | - Ute Bahr
- Goethe University Frankfurt, Institute of Pharmaceutical Chemistry, Max-von-Laue Str. 9, 60438 Frankfurt, Germany
| | - Michael Karas
- Goethe University Frankfurt, Institute of Pharmaceutical Chemistry, Max-von-Laue Str. 9, 60438 Frankfurt, Germany
| | - Ilka Wittig
- Functional Proteomics, SFB 815 core unit, Goethe-University Frankfurt, Medical School, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Juliana Heidler
- Functional Proteomics, SFB 815 core unit, Goethe-University Frankfurt, Medical School, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Jan Hoffmann
- Goethe University Frankfurt, Institute of Physical and Theoretical Chemistry, Max-von-Laue Str. 9, 60438 Frankfurt, Germany
| | - Nina Morgner
- Goethe University Frankfurt, Institute of Physical and Theoretical Chemistry, Max-von-Laue Str. 9, 60438 Frankfurt, Germany
| | - Volker Zickermann
- Goethe University Frankfurt, Medical School, Institute of Biochemistry II, Structural Bioenergetics Group, Max-von-Laue Str. 9, 60438 Frankfurt, Germany; Cluster of Excellence Macromolecular Complexes, Goethe University Frankfurt, Germany.
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