Protein UPS1, mitochondrial - Q05776 (UPS1_YEAST)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q05776: 7
 
Function
Required for maintenance of normal mitochondrial morphology (PubMed:16754953, PubMed:26071601). Required for PCP1-dependent processing of MGM1 (PubMed:16754953). The UPS1:MDM35 complex mediates the transfer of phosphatidic acid (PA) between liposomes and probably functions as a PA transporter across the mitochondrion intermembrane space (PubMed:26071602, PubMed:26071601, PubMed:26235513). Phosphatidic acid release requires dissociation of the UPS1:MDM35 complex (PubMed:26235513). Phosphatidic acid import is required for cardiolipin (CL) synthesis in the mitochondrial inner membrane (PubMed:26071602). With UPS2, controls the level of cardiolipin in mitochondria (PubMed:19506038). Cardiolipin is a unique phospholipid with four fatty acid chains and is present mainly in the mitochondrial inner membrane where it stabilizes the electron transport chain supercomplex between complexes III and IV through direct interaction of their subunits. UniProt
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Subunit Structure
Interacts with MDM35 (PubMed:20622808, PubMed:20657548, PubMed:26071602, PubMed:26071601, PubMed:26235513). Found associated with a 170 kDa complex. UniProt
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The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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