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1.N.6.1.1
The mitochondrial inner/outer membrane fusion complex, Fzo/Mgm1/Ugo1. Only the Ugo1 protein is a member of the MC superfamily, and PCD2 is a functional domain required for mitochondrial fusion.  It has a single carrier domain (Coonrod et al. 2007).

Accession Number:Q03327
Protein Name:Mitochondrial fusion and transport protein UGO1
Length:502
Molecular Weight:57471.00
Species:Saccharomyces cerevisiae (Baker's yeast) [4932]
Number of TMSs:4
Location1 / Topology2 / Orientation3: Mitochondrion outer membrane1 / Single-pass type II membrane protein2
Substrate

Cross database links:

RefSeq: NP_010758.2   
Entrez Gene ID: 852081   
KEGG: sce:YDR470C   

Gene Ontology

GO:0016021 C:integral to membrane
GO:0005741 C:mitochondrial outer membrane
GO:0005515 F:protein binding
GO:0030447 P:filamentous growth
GO:0008053 P:mitochondrial fusion
GO:0000002 P:mitochondrial genome maintenance
GO:0055085 P:transmembrane transport

References (7)

[1] “The yeast mitochondrial transport proteins: new sequences and consensus residues, lack of direct relation between consensus residues and transmembrane helices, expression patterns of the transport protein genes, and protein-protein interactions with other proteins.”  Belenkiy R.et.al.   10930523
[2] “The nucleotide sequence of Saccharomyces cerevisiae chromosome IV.”  Jacq C.et.al.   9169867
[3] “UGO1 encodes an outer membrane protein required for mitochondrial fusion.”  Sesaki H.et.al.   11257114
[4] “The intramitochondrial dynamin-related GTPase, Mgm1p, is a component of a protein complex that mediates mitochondrial fusion.”  Wong E.D.et.al.   12566426
[5] “Mgm1p, a dynamin-related GTPase, is essential for fusion of the mitochondrial outer membrane.”  Sesaki H.et.al.   12808034
[6] “The proteome of Saccharomyces cerevisiae mitochondria.”  Sickmann A.et.al.   14576278
[7] “Ugo1p links the Fzo1p and Mgm1p GTPases for mitochondrial fusion.”  Sesaki H.et.al.   15087460

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MNNNNVTEAT SRAQIRPYYD PDSFNAGYSA VFKPDEGVVD PHGYTIASKL NVINSSPTTK 
61:	RMANALFKSS PMKKLSNSVN DGLSLEGSNG EITGLNNFEW AELVNIQKWR KIFGQLLDMF 
121:	FRKYFQLLIQ QPFDVARLLI QVGEFKIFKT TVDTNKPQAP IILRDEEGDG AAREGEEDAY 
181:	DEEEIDFFPI ERKIAEANST APIMAEETDH SHHEPTDISL TIAPQSLHTI DVINALFDQE 
241:	GIRGLWKANN TTFIYNFLSL SIDTWFTGLL SSFLGVPDPY FMEVINSPDI SKSFILALGA 
301:	GVFTSIILLP VDLIRTRLIV TSFKKKKNVK TDGKNMVTNT RSLRQLIRCW SWRKNGVSIP 
361:	LDMWSLTILQ SINNSFFNKL FDLVIYNQFH IEKYSQTVMY NTMKFFSKSL ELFIKLPLEN 
421:	LLRRCQLNYL LNDQRLSFKV DSTELIVKPK KYNGIWDVIR NNSNTNRGQL WNGWKVGVIS 
481:	LICGYGLQMM NKVDINMEQE KF