ID A0A437QTJ3_9PROT Unreviewed; 279 AA.
AC A0A437QTJ3;
DT 08-MAY-2019, integrated into UniProtKB/TrEMBL.
DT 08-MAY-2019, sequence version 1.
DT 24-JAN-2024, entry version 17.
DE RecName: Full=Small-conductance mechanosensitive channel {ECO:0000256|RuleBase:RU369025};
GN ORFNames=EOI86_00420 {ECO:0000313|EMBL:RVU37804.1};
OS Hwanghaeella grinnelliae.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodospirillales;
OC Rhodospirillaceae; Hwanghaeella.
OX NCBI_TaxID=2500179 {ECO:0000313|EMBL:RVU37804.1, ECO:0000313|Proteomes:UP000287447};
RN [1] {ECO:0000313|Proteomes:UP000287447}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Gri0909 {ECO:0000313|Proteomes:UP000287447};
RA Kim J., Jeong S.E., Jeon C.O.;
RT "Gri0909 isolated from a small marine red alga.";
RL Submitted (JAN-2019) 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:RVU37804.1}.
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DR EMBL; SADE01000001; RVU37804.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A437QTJ3; -.
DR OrthoDB; 9799209at2; -.
DR Proteomes; UP000287447; 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; IPR008910; MSC_TM_helix.
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; PF05552; MS_channel_1st_1; 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:UP000287447};
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 20..41
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU369025"
FT TRANSMEM 61..80
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU369025"
FT TRANSMEM 92..121
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU369025"
FT DOMAIN 65..106
FT /note="Mechanosensitive ion channel transmembrane helices
FT 2/3"
FT /evidence="ECO:0000259|Pfam:PF21088"
FT DOMAIN 108..173
FT /note="Mechanosensitive ion channel MscS"
FT /evidence="ECO:0000259|Pfam:PF00924"
FT DOMAIN 184..262
FT /note="Mechanosensitive ion channel MscS C-terminal"
FT /evidence="ECO:0000259|Pfam:PF21082"
SQ SEQUENCE 279 AA; 30625 MW; A4DA28D512F3E1FF CRC64;
MDQEQITETI NHVMELATAY GLQVVGAIII LILGWIAAGW ARNAADKGLS KVRGMDETLR
YFLSTLVRYL VLAVTIVMVL ERFGVQTASL IAVLGAAGLA IGLALQGTLS NLAAGVMLLF
FRPFKIGDFV DAAGISGTVK LISLFTTEMA TPDNVKIIVP NKQLWDTSIK NFSANATRRV
DFLLGIGYGD DIDKAFKVIK EIIENDERCH KEPESQIVVG NLGDSSVDII VRVWCKADDY
WGLKFDLTKA FKQTFDKEGI EIPFPQRVVH MVKEGANDA
//