ID A0A2U1W0J3_9PROT Unreviewed; 469 AA.
AC A0A2U1W0J3;
DT 18-JUL-2018, integrated into UniProtKB/TrEMBL.
DT 18-JUL-2018, sequence version 1.
DT 27-MAR-2024, entry version 18.
DE RecName: Full=Signal recognition particle protein {ECO:0000256|HAMAP-Rule:MF_00306};
DE EC=3.6.5.4 {ECO:0000256|HAMAP-Rule:MF_00306};
DE AltName: Full=Fifty-four homolog {ECO:0000256|HAMAP-Rule:MF_00306};
GN Name=ffh {ECO:0000256|HAMAP-Rule:MF_00306};
GN ORFNames=TSO221_19345 {ECO:0000313|EMBL:PWC43518.1};
OS Azospirillum sp. TSO22-1.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodospirillales;
OC Azospirillaceae; Azospirillum.
OX NCBI_TaxID=716789 {ECO:0000313|EMBL:PWC43518.1, ECO:0000313|Proteomes:UP000245126};
RN [1] {ECO:0000313|EMBL:PWC43518.1, ECO:0000313|Proteomes:UP000245126}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TSO22-1 {ECO:0000313|EMBL:PWC43518.1,
RC ECO:0000313|Proteomes:UP000245126};
RA Jang J., Ishii S.;
RT "Comparative genome analysis of Azospirillum sp. strains.";
RL Submitted (JUL-2015) 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. Interaction
CC with FtsY leads to the transfer of the RNC complex to the Sec
CC translocase for insertion into the membrane, the hydrolysis of GTP by
CC both Ffh and FtsY, and the dissociation of the SRP-FtsY complex into
CC the individual components. {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|ARBA:ARBA00035577, ECO:0000256|HAMAP-
CC Rule:MF_00306};
CC -!- SUBUNIT: Part of the signal recognition particle protein translocation
CC system, which is composed of SRP and FtsY. SRP is a ribonucleoprotein
CC composed of Ffh and a 4.5S RNA molecule. {ECO:0000256|HAMAP-
CC Rule:MF_00306}.
CC -!- SUBCELLULAR LOCATION: Cell inner membrane
CC {ECO:0000256|ARBA:ARBA00004515}; Peripheral membrane protein
CC {ECO:0000256|ARBA:ARBA00004515}; Cytoplasmic side
CC {ECO:0000256|ARBA:ARBA00004515}. Cytoplasm {ECO:0000256|HAMAP-
CC Rule:MF_00306}. Note=The SRP-RNC complex is targeted to the cytoplasmic
CC membrane. {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}.
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:PWC43518.1}.
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DR EMBL; LGQZ01000076; PWC43518.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2U1W0J3; -.
DR OrthoDB; 9804720at2; -.
DR Proteomes; UP000245126; Unassembled WGS sequence.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
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 {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:UP000245126};
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 268..281
FT /note="SRP54-type proteins GTP-binding"
FT /evidence="ECO:0000259|PROSITE:PS00300"
FT BINDING 106..113
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00306"
FT BINDING 189..193
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00306"
FT BINDING 247..250
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00306"
SQ SEQUENCE 469 AA; 50325 MW; F65F4C7839EE36E7 CRC64;
MFEGLTGRLG DIFDKLRRRG ALTEEDVSAA LREVRVALLE ADVALPVVKQ FVTQVKERAV
GQEVLRSVTP GQQVIKIVHD SLVEMLGAGE EINLNAAAPV PVLMVGLQGS GKTTSTAKIA
LRLKTKERKK VLMASLDVRR PAAQEQLKVL GEQIGVATLP ILMGQGPVDI ARRALETGRL
EGYDVVMLDT AGRLAIDEEL MAEVVAVRDA TKPVETLLVA DAMTGQDAVT VATNFNDKVG
ITGIVLTRVD GDARGGAALS MRQITGRPIK LLGVGEKIDA LEPFHPDRIA GRILGMGDVV
SLVEKAVETI DQEEAEKLAR KFEKGQGFDL DDMASQLKQL RKMGGMSGLM GMLPGIGKIK
NQLKDANIDD RMIKRQEAII SSMTKKERKN PEVIKASRRK RIAAGSGTSV QEVNKLLKQF
DDMRTMMKQV QKLGKKGMLR GGLGNLLPKG LGGFGGGNPF GGGGKGPFG
//
