MMM1_POSPM
ID MMM1_POSPM Reviewed; 309 AA.
AC B8PL20;
DT 22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT 03-MAR-2009, sequence version 1.
DT 25-MAY-2022, entry version 58.
DE RecName: Full=Maintenance of mitochondrial morphology protein 1 {ECO:0000255|HAMAP-Rule:MF_03103};
GN Name=MMM1 {ECO:0000255|HAMAP-Rule:MF_03103}; ORFNames=POSPLDRAFT_104426;
OS Postia placenta (strain ATCC 44394 / Madison 698-R) (Brown rot fungus)
OS (Poria monticola).
OC Eukaryota; Fungi; Dikarya; Basidiomycota; Agaricomycotina; Agaricomycetes;
OC Polyporales; Dacryobolaceae; Postia.
OX NCBI_TaxID=561896;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 44394 / Madison 698-R;
RX PubMed=19193860; DOI=10.1073/pnas.0809575106;
RA Martinez D., Challacombe J., Morgenstern I., Hibbett D., Schmoll M.,
RA Kubicek C.P., Ferreira P., Ruiz-Duenas F.J., Martinez A.T., Kersten P.,
RA Hammel K.E., Vanden Wymelenberg A., Gaskell J., Lindquist E., Sabat G.,
RA Splinter BonDurant S., Larrondo L.F., Canessa P., Vicuna R., Yadav J.,
RA Doddapaneni H., Subramanian V., Pisabarro A.G., Lavin J.L., Oguiza J.A.,
RA Master E., Henrissat B., Coutinho P.M., Harris P., Magnuson J.K.,
RA Baker S.E., Bruno K., Kenealy W., Hoegger P.J., Kuees U., Ramaiya P.,
RA Lucas S., Salamov A., Shapiro H., Tu H., Chee C.L., Misra M., Xie G.,
RA Teter S., Yaver D., James T., Mokrejs M., Pospisek M., Grigoriev I.V.,
RA Brettin T., Rokhsar D., Berka R., Cullen D.;
RT "Genome, transcriptome, and secretome analysis of wood decay fungus Postia
RT placenta supports unique mechanisms of lignocellulose conversion.";
RL Proc. Natl. Acad. Sci. U.S.A. 106:1954-1959(2009).
CC -!- FUNCTION: Component of the ERMES/MDM complex, which serves as a
CC molecular tether to connect the endoplasmic reticulum (ER) and
CC mitochondria. Components of this complex are involved in the control of
CC mitochondrial shape and protein biogenesis, and function in
CC nonvesicular lipid trafficking between the ER and mitochondria. The
CC MDM12-MMM1 subcomplex functions in the major beta-barrel assembly
CC pathway that is responsible for biogenesis of all outer membrane beta-
CC barrel proteins, and acts in a late step after the SAM complex. The
CC MDM10-MDM12-MMM1 subcomplex further acts in the TOM40-specific pathway
CC after the action of the MDM12-MMM1 complex. Essential for establishing
CC and maintaining the structure of mitochondria and maintenance of mtDNA
CC nucleoids. {ECO:0000255|HAMAP-Rule:MF_03103}.
CC -!- SUBUNIT: Homodimer. Component of the ER-mitochondria encounter
CC structure (ERMES) or MDM complex, composed of MMM1, MDM10, MDM12 and
CC MDM34. A MMM1 homodimer associates with one molecule of MDM12 on each
CC side in a pairwise head-to-tail manner, and the SMP-LTD domains of MMM1
CC and MDM12 generate a continuous hydrophobic tunnel for phospholipid
CC trafficking. {ECO:0000255|HAMAP-Rule:MF_03103}.
CC -!- SUBCELLULAR LOCATION: Endoplasmic reticulum membrane
CC {ECO:0000255|HAMAP-Rule:MF_03103}; Single-pass type I membrane protein
CC {ECO:0000255|HAMAP-Rule:MF_03103}. Note=The ERMES/MDM complex localizes
CC to a few discrete foci (around 10 per single cell), that represent
CC mitochondria-endoplasmic reticulum junctions. These foci are often
CC found next to mtDNA nucleoids. {ECO:0000255|HAMAP-Rule:MF_03103}.
CC -!- DOMAIN: The SMP-LTD domain is a barrel-like domain that can bind
CC various types of glycerophospholipids in its interior and mediate their
CC transfer between two adjacent bilayers. {ECO:0000255|HAMAP-
CC Rule:MF_03103}.
CC -!- SIMILARITY: Belongs to the MMM1 family. {ECO:0000255|HAMAP-
CC Rule:MF_03103}.
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DR EMBL; EQ966442; EED78430.1; -; Genomic_DNA.
DR RefSeq; XP_002476378.1; XM_002476333.1.
DR AlphaFoldDB; B8PL20; -.
DR SMR; B8PL20; -.
DR STRING; 561896.B8PL20; -.
DR EnsemblFungi; EED78430; EED78430; POSPLDRAFT_104426.
DR KEGG; ppl:POSPLDRAFT_104426; -.
DR HOGENOM; CLU_032730_0_0_1; -.
DR InParanoid; B8PL20; -.
DR OMA; KWFVERC; -.
DR Proteomes; UP000001743; Unassembled WGS sequence.
DR GO; GO:0032865; C:ERMES complex; IEA:UniProtKB-UniRule.
DR GO; GO:0030176; C:integral component of endoplasmic reticulum membrane; IEA:UniProtKB-UniRule.
DR GO; GO:0008289; F:lipid binding; IEA:UniProtKB-KW.
DR GO; GO:0006869; P:lipid transport; IEA:UniProtKB-KW.
DR GO; GO:0000002; P:mitochondrial genome maintenance; IEA:UniProtKB-UniRule.
DR GO; GO:0045040; P:protein insertion into mitochondrial outer membrane; IEA:UniProtKB-UniRule.
DR HAMAP; MF_03103; Mmm1; 1.
DR InterPro; IPR027537; Mmm1.
DR InterPro; IPR019411; MMM1_dom.
DR InterPro; IPR031468; SMP_LBD.
DR PANTHER; PTHR13466:SF5; PTHR13466:SF5; 2.
DR Pfam; PF10296; MMM1; 2.
DR PROSITE; PS51847; SMP; 1.
PE 3: Inferred from homology;
KW Endoplasmic reticulum; Lipid transport; Lipid-binding; Membrane;
KW Reference proteome; Transmembrane; Transmembrane helix; Transport.
FT CHAIN 1..309
FT /note="Maintenance of mitochondrial morphology protein 1"
FT /id="PRO_0000384250"
FT TOPO_DOM 1..16
FT /note="Lumenal"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03103"
FT TRANSMEM 17..37
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03103"
FT TOPO_DOM 38..309
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03103"
FT DOMAIN 84..293
FT /note="SMP-LTD"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03103"
SQ SEQUENCE 309 AA; 34213 MW; 5FA332F413F9D16C CRC64;
MGNAYIFSLQ PTFTQGLILG QFSILFLLVL VLKYLFFDTV SDHAYRTSSY QPKIERDEDE
DGIALVAERL APKPAQDGKQ SGNECESADW LNALLIQVLE AYRVKLRDGL PGAEGDEVAR
KRVERFANQM RPPGFLDPIK VHSVDLGVTA PRLSRARPRP QKAPNTDPAI EFDMSYADTI
SLSLSTSVLF NYPFASFARL PVSLTISLSH FSSSVLLTPP QPHAQHPTVT LNLPSPGTDF
VLNIQTKSLM GSRAKLADVP KLHEMITHQI QRVLLEKGTW KVVLPGLASV SEVKEDVKRE
QQAGELPVN
