ID SRP54_AQUAE Reviewed; 454 AA.
AC O67615;
DT 30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT 01-AUG-1998, sequence version 1.
DT 27-MAR-2024, entry version 132.
DE RecName: Full=Signal recognition particle protein {ECO:0000255|HAMAP-Rule:MF_00306};
DE EC=3.6.5.4 {ECO:0000255|HAMAP-Rule:MF_00306};
DE AltName: Full=Fifty-four homolog {ECO:0000255|HAMAP-Rule:MF_00306};
GN Name=ffh {ECO:0000255|HAMAP-Rule:MF_00306}; OrderedLocusNames=aq_1720;
OS Aquifex aeolicus (strain VF5).
OC Bacteria; Aquificota; Aquificae; Aquificales; Aquificaceae; Aquifex.
OX NCBI_TaxID=224324;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=VF5;
RX PubMed=9537320; DOI=10.1038/32831;
RA Deckert G., Warren P.V., Gaasterland T., Young W.G., Lenox A.L.,
RA Graham D.E., Overbeek R., Snead M.A., Keller M., Aujay M., Huber R.,
RA Feldman R.A., Short J.M., Olsen G.J., Swanson R.V.;
RT "The complete genome of the hyperthermophilic bacterium Aquifex aeolicus.";
RL Nature 392:353-358(1998).
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:0000255|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:0000255|HAMAP-Rule:MF_00306};
CC -!- SUBUNIT: Part of the signal recognition particle protein translocation
CC system, which is composed of SRP and FtsY. {ECO:0000255|HAMAP-
CC Rule:MF_00306}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00306}.
CC Note=The SRP-RNC complex is targeted to the cytoplasmic membrane.
CC {ECO:0000255|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:0000255|HAMAP-Rule:MF_00306}.
CC -!- SIMILARITY: Belongs to the GTP-binding SRP family. SRP54 subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_00306}.
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DR EMBL; AE000657; AAC07579.1; -; Genomic_DNA.
DR PIR; E70448; E70448.
DR RefSeq; NP_214181.1; NC_000918.1.
DR RefSeq; WP_010881118.1; NC_000918.1.
DR AlphaFoldDB; O67615; -.
DR SMR; O67615; -.
DR STRING; 224324.aq_1720; -.
DR EnsemblBacteria; AAC07579; AAC07579; aq_1720.
DR KEGG; aae:aq_1720; -.
DR PATRIC; fig|224324.8.peg.1323; -.
DR eggNOG; COG0541; Bacteria.
DR HOGENOM; CLU_009301_6_0_0; -.
DR InParanoid; O67615; -.
DR OrthoDB; 9804720at2; -.
DR Proteomes; UP000000798; Chromosome.
DR GO; GO:0048500; C:signal recognition particle; IEA:UniProtKB-UniRule.
DR GO; GO:0008312; F:7S RNA binding; IEA:InterPro.
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; cd18539; SRP_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; IPR004780; SRP.
DR InterPro; IPR022941; SRP54.
DR InterPro; IPR000897; SRP54_GTPase_dom.
DR InterPro; IPR042101; SRP54_N_sf.
DR NCBIfam; TIGR00959; ffh; 1.
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; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR SUPFAM; SSF47446; Signal peptide-binding domain; 1.
DR PROSITE; PS00300; SRP54; 1.
PE 3: Inferred from homology;
KW Cytoplasm; GTP-binding; Hydrolase; Nucleotide-binding; Reference proteome;
KW Ribonucleoprotein; RNA-binding; Signal recognition particle.
FT CHAIN 1..454
FT /note="Signal recognition particle protein"
FT /id="PRO_0000101148"
FT BINDING 102..109
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00306"
FT BINDING 184..188
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00306"
FT BINDING 242..245
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00306"
SQ SEQUENCE 454 AA; 50912 MW; 9F13FA8C883A0558 CRC64;
MLELLTEKFS HALEKLTNAR KITEKNINQT LREIRLALLE ADVDYQVAKD FIKRIREKVV
GKEVPKNLSP AEFVIKTVYE ELVDILGGEK ADLKKGTVLF VGLQGTGKTT TIGKIANLLK
KGGHKVAVSS TDLRRPAAML QLQRLAERVG VPYYEFEEGL GAVEIARRAV KRAKEESVDY
LLLDTAGRLH VDEELMKELQ EIKEVTNPSE ILYVADAMQG QTALETAKTF HERLGLTGVV
ITKMDGDARG GLALSVKEVL GVPIKFIGVG EKIEDIEPFY PDRIAQRILG LGDIQSLVEK
AQEVITEDKA QVMATKVMTG EFDLEDLREM LRMIQQMGPL DKLLSMIPGV APQLKHLKVD
EKQFKKIEAI INSMTPEERR NPKIINMSRK KRIARGSGTT VSDVNKLLKR YEEMKKMMRK
LQKAGGMPAI PKMPKMPRFP SEASSFNLFL FLST
//
