MMM1_KOMPG
ID MMM1_KOMPG Reviewed; 454 AA.
AC C4R892;
DT 22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT 07-JUL-2009, sequence version 1.
DT 25-MAY-2022, entry version 68.
DE RecName: Full=Maintenance of mitochondrial morphology protein 1 {ECO:0000255|HAMAP-Rule:MF_03103};
GN Name=MMM1 {ECO:0000255|HAMAP-Rule:MF_03103};
GN OrderedLocusNames=PAS_chr4_0557;
OS Komagataella phaffii (strain GS115 / ATCC 20864) (Yeast) (Pichia pastoris).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC Saccharomycetales; Phaffomycetaceae; Komagataella.
OX NCBI_TaxID=644223;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=GS115 / ATCC 20864;
RX PubMed=19465926; DOI=10.1038/nbt.1544;
RA De Schutter K., Lin Y.-C., Tiels P., Van Hecke A., Glinka S.,
RA Weber-Lehmann J., Rouze P., Van de Peer Y., Callewaert N.;
RT "Genome sequence of the recombinant protein production host Pichia
RT pastoris.";
RL Nat. Biotechnol. 27:561-566(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; FN392322; CAY71817.1; -; Genomic_DNA.
DR RefSeq; XP_002493996.1; XM_002493951.1.
DR AlphaFoldDB; C4R892; -.
DR SMR; C4R892; -.
DR STRING; 644223.C4R892; -.
DR EnsemblFungi; CAY71817; CAY71817; PAS_chr4_0557.
DR GeneID; 8200825; -.
DR KEGG; ppa:PAS_chr4_0557; -.
DR eggNOG; ENOG502QUUW; Eukaryota.
DR HOGENOM; CLU_032730_2_0_1; -.
DR InParanoid; C4R892; -.
DR OMA; KWFVERC; -.
DR Proteomes; UP000000314; Chromosome 4.
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:0120013; F:lipid transfer activity; IEA:EnsemblFungi.
DR GO; GO:0015917; P:aminophospholipid transport; IEA:EnsemblFungi.
DR GO; GO:0000002; P:mitochondrial genome maintenance; IEA:UniProtKB-UniRule.
DR GO; GO:0070096; P:mitochondrial outer membrane translocase complex assembly; IEA:EnsemblFungi.
DR GO; GO:1990456; P:mitochondrion-endoplasmic reticulum membrane tethering; IEA:EnsemblFungi.
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; 1.
DR Pfam; PF10296; MMM1; 1.
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..454
FT /note="Maintenance of mitochondrial morphology protein 1"
FT /id="PRO_0000384247"
FT TOPO_DOM 1..128
FT /note="Lumenal"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03103"
FT TRANSMEM 129..149
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03103"
FT TOPO_DOM 150..454
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03103"
FT DOMAIN 207..430
FT /note="SMP-LTD"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03103"
SQ SEQUENCE 454 AA; 50806 MW; A621349C15C4D4AE CRC64;
MSMVIGIGDL LVGYYWQWRD ESQVEGKFMF YRAAKKTTPV KYQYTSNLSR CFLVFGIEPK
PNKSGNFNNT MPDTEHSGDT TVNQVETIVT TVVVEQQVPT LVALDSLINE NLKLASASQS
SGWGFAHGLL VGQLSVVAVL AFFIKFFIFG NSSMARPLMV APLINRKPAG VYKKGRAKSF
SEVEDYDSET SSTQILDKTY YDVKTHQSES LDWFNVLVAQ SIAQFRYEAL NNDNIYHSLS
DALSSSNLPD YLDKITITEI NIGDDFPIFS NCRIKHSPNN SNRLEAKIDV DVADTLTLGI
ETQLLLNQPK PFTAVLPVQL SVSIVRFSAC LTVSLISTAD EEFQSSIKCV EDSENAIGDY
EDDDDEFGGG AALMFSFSPD FRLEFEVKSL IGARSKLENV PLIGNLIEEK LKSWFLERCV
EPRFQLIELP SMWPRKKNTR KPVDSESETA VDSN
