ID A0A0U3FJ33_9CREN Unreviewed; 444 AA.
AC A0A0U3FJ33;
DT 16-MAR-2016, integrated into UniProtKB/TrEMBL.
DT 16-MAR-2016, sequence version 1.
DT 24-JAN-2024, entry version 34.
DE RecName: Full=Signal recognition particle 54 kDa protein {ECO:0000256|HAMAP-Rule:MF_00306};
DE Short=SRP54 {ECO:0000256|HAMAP-Rule:MF_00306};
DE EC=3.6.5.4 {ECO:0000256|HAMAP-Rule:MF_00306};
GN Name=srp54 {ECO:0000256|HAMAP-Rule:MF_00306};
GN ORFNames=EYM_05880 {ECO:0000313|EMBL:ALU11894.1};
OS Ignicoccus islandicus DSM 13165.
OC Archaea; Thermoproteota; Thermoprotei; Desulfurococcales;
OC Desulfurococcaceae; Ignicoccus.
OX NCBI_TaxID=940295 {ECO:0000313|EMBL:ALU11894.1, ECO:0000313|Proteomes:UP000060778};
RN [1] {ECO:0000313|EMBL:ALU11894.1, ECO:0000313|Proteomes:UP000060778}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 13165 {ECO:0000313|EMBL:ALU11894.1,
RC ECO:0000313|Proteomes:UP000060778};
RA Podar M.;
RT "Comparative genomics of Ignicoccus.";
RL Submitted (NOV-2013) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Involved in targeting and insertion of nascent membrane
CC proteins into the cytoplasmic membrane. Binds to the hydrophobic signal
CC sequence of the ribosome-nascent chain (RNC) as it emerges from the
CC ribosomes. The SRP-RNC complex is then targeted to the cytoplasmic
CC membrane where it interacts with the SRP receptor FtsY.
CC {ECO:0000256|HAMAP-Rule:MF_00306}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=GTP + H2O = GDP + H(+) + phosphate; Xref=Rhea:RHEA:19669,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:37565,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:58189; EC=3.6.5.4;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00306};
CC -!- SUBUNIT: Part of the signal recognition particle protein translocation
CC system, which is composed of SRP and FtsY. Archaeal SRP consists of a
CC 7S RNA molecule of 300 nucleotides and two protein subunits: SRP54 and
CC SRP19. {ECO:0000256|HAMAP-Rule:MF_00306}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00306}.
CC Note=The SRP-RNC complex is targeted to the cytoplasmic membrane.
CC {ECO:0000256|HAMAP-Rule:MF_00306}.
CC -!- DOMAIN: Composed of three domains: the N-terminal N domain, which is
CC responsible for interactions with the ribosome, the central G domain,
CC which binds GTP, and the C-terminal M domain, which binds the RNA and
CC the signal sequence of the RNC. {ECO:0000256|HAMAP-Rule:MF_00306}.
CC -!- SIMILARITY: Belongs to the GTP-binding SRP family. SRP54 subfamily.
CC {ECO:0000256|ARBA:ARBA00005450, ECO:0000256|HAMAP-Rule:MF_00306}.
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DR EMBL; CP006867; ALU11894.1; -; Genomic_DNA.
DR RefSeq; WP_075050080.1; NZ_CP006867.1.
DR AlphaFoldDB; A0A0U3FJ33; -.
DR STRING; 940295.EYM_05880; -.
DR GeneID; 30680558; -.
DR KEGG; iis:EYM_05880; -.
DR PATRIC; fig|940295.4.peg.1131; -.
DR OrthoDB; 52849at2157; -.
DR Proteomes; UP000060778; Chromosome.
DR GO; GO:0048500; C:signal recognition particle; IEA:UniProtKB-UniRule.
DR GO; GO:0008312; F:7S RNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016887; F:ATP hydrolysis activity; IEA:InterPro.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003924; F:GTPase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006614; P:SRP-dependent cotranslational protein targeting to membrane; IEA:InterPro.
DR CDD; cd17875; SRP54_G; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR Gene3D; 1.20.120.140; Signal recognition particle SRP54, nucleotide-binding domain; 1.
DR Gene3D; 1.10.260.30; Signal recognition particle, SRP54 subunit, M-domain; 1.
DR HAMAP; MF_00306; SRP54; 1.
DR InterPro; IPR003593; AAA+_ATPase.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR036891; Signal_recog_part_SRP54_M_sf.
DR InterPro; IPR013822; Signal_recog_particl_SRP54_hlx.
DR InterPro; IPR004125; Signal_recog_particle_SRP54_M.
DR InterPro; IPR036225; SRP/SRP_N.
DR InterPro; IPR022941; SRP54.
DR InterPro; IPR000897; SRP54_GTPase_dom.
DR InterPro; IPR042101; SRP54_N_sf.
DR PANTHER; PTHR11564:SF5; SIGNAL RECOGNITION PARTICLE 54 KDA PROTEIN; 1.
DR PANTHER; PTHR11564; SIGNAL RECOGNITION PARTICLE 54K PROTEIN SRP54; 1.
DR Pfam; PF00448; SRP54; 1.
DR Pfam; PF02881; SRP54_N; 1.
DR Pfam; PF02978; SRP_SPB; 1.
DR SMART; SM00382; AAA; 1.
DR SMART; SM00962; SRP54; 1.
DR SMART; SM00963; SRP54_N; 1.
DR SUPFAM; SSF47364; Domain of the SRP/SRP receptor G-proteins; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR SUPFAM; SSF47446; Signal peptide-binding domain; 1.
PE 3: Inferred from homology;
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00306};
KW GTP-binding {ECO:0000256|ARBA:ARBA00023134, ECO:0000256|HAMAP-
KW Rule:MF_00306};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_00306};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_00306}; Reference proteome {ECO:0000313|Proteomes:UP000060778};
KW Ribonucleoprotein {ECO:0000256|ARBA:ARBA00023274, ECO:0000256|HAMAP-
KW Rule:MF_00306};
KW RNA-binding {ECO:0000256|ARBA:ARBA00022884, ECO:0000256|HAMAP-
KW Rule:MF_00306};
KW Signal recognition particle {ECO:0000256|ARBA:ARBA00023135,
KW ECO:0000256|HAMAP-Rule:MF_00306}.
FT DOMAIN 1..82
FT /note="Signal recognition particle SRP54 helical bundle"
FT /evidence="ECO:0000259|SMART:SM00963"
FT DOMAIN 95..271
FT /note="AAA+ ATPase"
FT /evidence="ECO:0000259|SMART:SM00382"
FT DOMAIN 96..290
FT /note="SRP54-type proteins GTP-binding"
FT /evidence="ECO:0000259|SMART:SM00962"
FT BINDING 103..110
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00306"
FT BINDING 184..188
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00306"
FT BINDING 242..245
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00306"
SQ SEQUENCE 444 AA; 49252 MW; 53D2160AB6D24FCE CRC64;
MLDGVREAVR KFLKSSADYE TAVNAFIKEL QKTLIKSDVN VRLVLQLTKK IKERALKEKP
PPGASKRDWF IKIVYEELSN LFGGDVEPEV KPKKVPWVVM LVGVQGSGKT TTAGKLARFY
KVRGYKVALI AADTYRPGAR DQLRQLAERA GVLFYTEDVD DAVQIAKRGV EWAKGKGAEV
IIVDTAGRHK NEIDLLNEME NIAKEISPDE VMLVIDAGIG QQAKALAESF HKRTPIGSIV
VTKLDGTAKG GGALSAVAVT GATIKFIGTG EKLDELEVFK PKKFVARILG LGDLEGLLER
LKEVEESGKL EEISQKIIEK GDLTLEDLYY QIVSMKKMGS LKKLLQMLPG VGLMGGNDLL
KQVDDKVLDK WLAIMNSMTI EELRKPNIIN RSRMRRIAIG SGTSVKDVEE LLKHYNMSKK
MIKQLKRKKG MLAKLMKQME GAGF
//
