ID A0A254QXL4_9RHOB Unreviewed; 280 AA.
AC A0A254QXL4;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 24-JAN-2024, entry version 19.
DE RecName: Full=Small-conductance mechanosensitive channel {ECO:0000256|RuleBase:RU369025};
GN ORFNames=ATO1_00605 {ECO:0000313|EMBL:OWU82463.1};
OS Phaeobacter sp. 22II1-1F12B.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodobacterales;
OC Roseobacteraceae; Phaeobacter.
OX NCBI_TaxID=1317111 {ECO:0000313|EMBL:OWU82463.1, ECO:0000313|Proteomes:UP000197279};
RN [1] {ECO:0000313|EMBL:OWU82463.1, ECO:0000313|Proteomes:UP000197279}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=22II1-1F12B {ECO:0000313|EMBL:OWU82463.1,
RC ECO:0000313|Proteomes:UP000197279};
RA Lai Q., Li G., Shao Z.;
RT "Phaeobacter sp. 22II1-1F12B Genome Sequencing.";
RL Submitted (APR-2013) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Mechanosensitive channel that participates in the regulation
CC of osmotic pressure changes within the cell, opening in response to
CC stretch forces in the membrane lipid bilayer, without the need for
CC other proteins. Contributes to normal resistance to hypoosmotic shock.
CC Forms an ion channel of 1.0 nanosiemens conductance with a slight
CC preference for anions. {ECO:0000256|RuleBase:RU369025}.
CC -!- SUBUNIT: Homoheptamer. {ECO:0000256|RuleBase:RU369025}.
CC -!- SUBCELLULAR LOCATION: Cell inner membrane
CC {ECO:0000256|RuleBase:RU369025}; Multi-pass membrane protein
CC {ECO:0000256|RuleBase:RU369025}. Membrane
CC {ECO:0000256|ARBA:ARBA00004141}; Multi-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004141}.
CC -!- SIMILARITY: Belongs to the MscS (TC 1.A.23) family.
CC {ECO:0000256|ARBA:ARBA00008017, ECO:0000256|RuleBase:RU369025}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|RuleBase:RU369025}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:OWU82463.1}.
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DR EMBL; AQQP01000001; OWU82463.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A254QXL4; -.
DR OrthoDB; 9814206at2; -.
DR Proteomes; UP000197279; Unassembled WGS sequence.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0008381; F:mechanosensitive monoatomic ion channel activity; IEA:InterPro.
DR Gene3D; 1.10.287.1260; -; 1.
DR Gene3D; 2.30.30.60; -; 1.
DR Gene3D; 3.30.70.100; -; 1.
DR InterPro; IPR010920; LSM_dom_sf.
DR InterPro; IPR049142; MS_channel_1st.
DR InterPro; IPR049278; MS_channel_C.
DR InterPro; IPR045275; MscS_archaea/bacteria_type.
DR InterPro; IPR023408; MscS_beta-dom_sf.
DR InterPro; IPR006685; MscS_channel_2nd.
DR InterPro; IPR011066; MscS_channel_C_sf.
DR InterPro; IPR011014; MscS_channel_TM-2.
DR PANTHER; PTHR30221; SMALL-CONDUCTANCE MECHANOSENSITIVE CHANNEL; 1.
DR PANTHER; PTHR30221:SF1; SMALL-CONDUCTANCE MECHANOSENSITIVE CHANNEL; 1.
DR Pfam; PF21088; MS_channel_1st; 1.
DR Pfam; PF00924; MS_channel_2nd; 1.
DR Pfam; PF21082; MS_channel_3rd; 1.
DR SUPFAM; SSF82689; Mechanosensitive channel protein MscS (YggB), C-terminal domain; 1.
DR SUPFAM; SSF82861; Mechanosensitive channel protein MscS (YggB), transmembrane region; 1.
DR SUPFAM; SSF50182; Sm-like ribonucleoproteins; 1.
PE 3: Inferred from homology;
KW Cell inner membrane {ECO:0000256|RuleBase:RU369025};
KW Cell membrane {ECO:0000256|ARBA:ARBA00022475};
KW Ion channel {ECO:0000256|RuleBase:RU369025};
KW Ion transport {ECO:0000256|RuleBase:RU369025};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|RuleBase:RU369025};
KW Reference proteome {ECO:0000313|Proteomes:UP000197279};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692,
KW ECO:0000256|RuleBase:RU369025};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989,
KW ECO:0000256|RuleBase:RU369025}; Transport {ECO:0000256|RuleBase:RU369025}.
FT TRANSMEM 23..45
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU369025"
FT TRANSMEM 66..91
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU369025"
FT TRANSMEM 97..128
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU369025"
FT DOMAIN 73..113
FT /note="Mechanosensitive ion channel transmembrane helices
FT 2/3"
FT /evidence="ECO:0000259|Pfam:PF21088"
FT DOMAIN 115..180
FT /note="Mechanosensitive ion channel MscS"
FT /evidence="ECO:0000259|Pfam:PF00924"
FT DOMAIN 188..269
FT /note="Mechanosensitive ion channel MscS C-terminal"
FT /evidence="ECO:0000259|Pfam:PF21082"
SQ SEQUENCE 280 AA; 30801 MW; 5217D5774E58FC68 CRC64;
MEEVLGTEIW NGTTVGDVLT LDFLASIAGS VLSAIVILII GWFIASWAHT RIRKIGERYA
HLDVTLFDFF GSILRYTILA FTFIFVLNTF GVQTTSIVAA VGAAGLAIGL ALQGTLSNVA
AGVMLIFFRP IKTGDFVEIN GQMGTVKTIT LNYTELASLG NFQIIVPNSE VWGSTIVNYS
IYPTRRAEWT FGVGYGADLK QAEAVIREII MGDERTHETP EMFLQVNNLG DFSVDFLARA
WCDSAVYFQY QADIKRKVKE ALDSAGVDIP FPTRTIIQDS
//