YOR211C

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Systematic name YOR211C
Gene name MGM1
Aliases MNA1
Feature type ORF, Verified
Coordinates Chr XV:741570..738925


Description of YOR211C: Mitochondrial GTPase related to dynamin, present in a complex containing Ugo1p and Fzo1p; required for normal morphology of cristae and for stability of Tim11p; homolog of human OPA1 involved in autosomal dominant optic atrophy[1][2][3][4]




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Community Commentary

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Protein Details

Mature Length (direct evidence)

Protein length: 822 aa The N-terminus of the mature large isoform of Mgm1p starts at position 81 (ISHFPKII...; 822 aa). The N-terminus of the mature short isoform of Mgm1p starts at position 161 (ATLIAATS...; 742 aa) are alternatively at position 163 (LIAATS...; 740 aa). [5] [6]


Protein Function/Process

Both isoforms of Mgm1p are required for maintenance of mitochondrial morphology and of mitochondrial DNA. [5] [6]


Protein Localization

Large and short isoform are localized to the mitochondrial intermembrane space. The large isoform is anchored via a single N-terminal transmembrane segment to the mitochondrial inner membrane which is absent in the short isoform. [5] [6]


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References

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  1. Sesaki H and Jensen RE (2004) Ugo1p links the Fzo1p and Mgm1p GTPases for mitochondrial fusion. J Biol Chem 279(27):28298-303 SGD PMID 15087460
  2. Sesaki H, et al. (2003) Mgm1p, a dynamin-related GTPase, is essential for fusion of the mitochondrial outer membrane. Mol Biol Cell 14(6):2342-56 SGD PMID 12808034
  3. Olichon A, et al. (2002) The human dynamin-related protein OPA1 is anchored to the mitochondrial inner membrane facing the inter-membrane space. FEBS Lett 523(1-3):171-6 SGD PMID 12123827
  4. Amutha B, et al. (2004) A novel role of Mgm1p, a dynamin-related GTPase, in ATP synthase assembly and cristae formation/maintenance. Biochem J 381(Pt 1):19-23 SGD PMID 15125685
  5. 5.0 5.1 5.2 Herlan M, et al. (2003) Processing of Mgm1 by the rhomboid-type protease Pcp1 is required for maintenance of mitochondrial morphology and of mitochondrial DNA. J Biol Chem 278(30):27781-8 SGD PMID 12707284
  6. 6.0 6.1 6.2 submitted by Andreas Reichert on 2003-09-25

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