| Structural highlights
Function
[NDUF7_DICDI] Involved in the assembly or stability of mitochondrial NADH:ubiquinone oxidoreductase complex (complex I) (PubMed:16507593, PubMed:20406883). Acts as an arginine methyltransferase and probably acts by mediating arginine methylation of ndufs2 (By similarity).[UniProtKB:Q7L592][1] [2]
Publication Abstract from PubMed
The human protein arginine methyltransferase NDUFAF7 controls the assembly of the approximately 1-MDa mitochondrial complex I (CI; the NADH ubiquinone oxidoreductase) by methylating its subunit NDUFS2. We determined crystal structures of MidA, the Dictyostelium ortholog of NDUFAF7. The MidA catalytic core domain resembles other eukaryotic methyltransferases. However, three large core loops assemble into a regulatory domain that is likely to control ligand selection. Binding of MidA to NDUFS2 is weakened by methylation, suggesting a mechanism for methylation-controlled substrate release. Structural and bioinformatic analyses support that MidA and NDUFAF7 and their role in CI assembly are conserved from bacteria to humans, implying that protein methylation already existed in proteobacteria. In vivo studies confirmed the critical role of the MidA methyltransferase activity for CI assembly, growth, and phototaxis of Dictyostelium. Collectively, our data elucidate the origin of protein arginine methylation and its use by MidA/NDUFAF7 to regulate CI assembly.
Proteobacterial Origin of Protein Arginine Methylation and Regulation of Complex I Assembly by MidA.,Shahul Hameed UF, Sanislav O, Lay ST, Annesley SJ, Jobichen C, Fisher PR, Swaminathan K, Arold ST Cell Rep. 2018 Aug 21;24(8):1996-2004. doi: 10.1016/j.celrep.2018.07.075. PMID:30134162[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Torija P, Vicente JJ, Rodrigues TB, Robles A, Cerdan S, Sastre L, Calvo RM, Escalante R. Functional genomics in Dictyostelium: MidA, a new conserved protein, is required for mitochondrial function and development. J Cell Sci. 2006 Mar 15;119(Pt 6):1154-64. doi: 10.1242/jcs.02819. Epub 2006 Feb , 28. PMID:16507593 doi:http://dx.doi.org/10.1242/jcs.02819
- ↑ Carilla-Latorre S, Gallardo ME, Annesley SJ, Calvo-Garrido J, Grana O, Accari SL, Smith PK, Valencia A, Garesse R, Fisher PR, Escalante R. MidA is a putative methyltransferase that is required for mitochondrial complex I function. J Cell Sci. 2010 May 15;123(Pt 10):1674-83. doi: 10.1242/jcs.066076. Epub 2010, Apr 20. PMID:20406883 doi:http://dx.doi.org/10.1242/jcs.066076
- ↑ Shahul Hameed UF, Sanislav O, Lay ST, Annesley SJ, Jobichen C, Fisher PR, Swaminathan K, Arold ST. Proteobacterial Origin of Protein Arginine Methylation and Regulation of Complex I Assembly by MidA. Cell Rep. 2018 Aug 21;24(8):1996-2004. doi: 10.1016/j.celrep.2018.07.075. PMID:30134162 doi:http://dx.doi.org/10.1016/j.celrep.2018.07.075
|
