ID Q8LJQ8_PEA Unreviewed; 384 AA.
AC Q8LJQ8;
DT 01-OCT-2002, integrated into UniProtKB/TrEMBL.
DT 01-OCT-2002, sequence version 1.
DT 27-MAR-2024, entry version 85.
DE RecName: Full=Guanine nucleotide-binding protein alpha subunit {ECO:0000256|RuleBase:RU368109};
DE Short=GP-alpha {ECO:0000256|RuleBase:RU368109};
OS Pisum sativum (Garden pea) (Lathyrus oleraceus).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC rosids; fabids; Fabales; Fabaceae; Papilionoideae; 50 kb inversion clade;
OC NPAAA clade; Hologalegina; IRL clade; Fabeae; Pisum.
OX NCBI_TaxID=3888 {ECO:0000313|EMBL:AAM97353.1};
RN [1] {ECO:0000313|EMBL:AAM97353.1}
RP NUCLEOTIDE SEQUENCE.
RA Misra S., Wu Y., Venkataraman G., Sopory S.K., Tuteja N.;
RT "Heterotrimeric G-protein complex and G-protein-coupled receptor from a
RT legume (Pisum sativum): role in salinity and heat stress and cross-talk
RT with phospholipase C.";
RL Plant J. 51:656-669(2007).
CC -!- FUNCTION: Guanine nucleotide-binding proteins (G proteins) are involved
CC as modulators or transducers in various transmembrane signaling
CC systems. {ECO:0000256|ARBA:ARBA00003069,
CC ECO:0000256|RuleBase:RU368109}.
CC -!- SUBUNIT: G proteins are composed of 3 units; alpha, beta and gamma. The
CC alpha chain contains the guanine nucleotide binding site.
CC {ECO:0000256|ARBA:ARBA00011356, ECO:0000256|RuleBase:RU368109}.
CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000256|RuleBase:RU368109}.
CC -!- DOMAIN: The helical domain is required for self-activation.
CC {ECO:0000256|RuleBase:RU368109}.
CC -!- SIMILARITY: Belongs to the G-alpha family.
CC {ECO:0000256|ARBA:ARBA00005804, ECO:0000256|RuleBase:RU368109}.
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DR EMBL; AF533439; AAM97353.1; -; Genomic_DNA.
DR AlphaFoldDB; Q8LJQ8; -.
DR SMR; Q8LJQ8; -.
DR GO; GO:0005834; C:heterotrimeric G-protein complex; IEA:UniProtKB-UniRule.
DR GO; GO:0001664; F:G protein-coupled receptor binding; IEA:UniProtKB-UniRule.
DR GO; GO:0031683; F:G-protein beta/gamma-subunit complex binding; IEA:UniProtKB-UniRule.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003924; F:GTPase activity; IEA:InterPro.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0007188; P:adenylate cyclase-modulating G protein-coupled receptor signaling pathway; IEA:UniProtKB-UniRule.
DR CDD; cd00066; G-alpha; 1.
DR Gene3D; 1.10.400.10; GI Alpha 1, domain 2-like; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR InterPro; IPR001019; Gprotein_alpha_su.
DR InterPro; IPR011025; GproteinA_insert.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR002976; Plant_Gprotein_alpha.
DR PANTHER; PTHR10218; GTP-BINDING PROTEIN ALPHA SUBUNIT; 1.
DR PANTHER; PTHR10218:SF302; GUANINE NUCLEOTIDE-BINDING PROTEIN ALPHA-8 SUBUNIT-RELATED; 1.
DR Pfam; PF00503; G-alpha; 1.
DR PRINTS; PR00318; GPROTEINA.
DR PRINTS; PR01242; GPROTEINAPLT.
DR SMART; SM00275; G_alpha; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR SUPFAM; SSF47895; Transducin (alpha subunit), insertion domain; 1.
DR PROSITE; PS51882; G_ALPHA; 1.
PE 3: Inferred from homology;
KW Cell membrane {ECO:0000256|RuleBase:RU368109};
KW GTP-binding {ECO:0000256|ARBA:ARBA00023134, ECO:0000256|PIRSR:PIRSR602976-
KW 1}; Lipoprotein {ECO:0000256|RuleBase:RU368109};
KW Magnesium {ECO:0000256|PIRSR:PIRSR602976-2, ECO:0000256|RuleBase:RU368109};
KW Membrane {ECO:0000256|RuleBase:RU368109};
KW Metal-binding {ECO:0000256|PIRSR:PIRSR602976-2,
KW ECO:0000256|RuleBase:RU368109};
KW Myristate {ECO:0000256|ARBA:ARBA00022707, ECO:0000256|RuleBase:RU368109};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741,
KW ECO:0000256|RuleBase:RU368109};
KW Palmitate {ECO:0000256|ARBA:ARBA00023139, ECO:0000256|RuleBase:RU368109};
KW Transducer {ECO:0000256|ARBA:ARBA00023224, ECO:0000256|RuleBase:RU368109}.
FT REGION 1..23
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 8..23
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 49..54
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|PIRSR:PIRSR602976-1"
FT BINDING 53
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR602976-2"
FT BINDING 163
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|PIRSR:PIRSR602976-1"
FT BINDING 188..189
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|PIRSR:PIRSR602976-1"
FT BINDING 194
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|PIRSR:PIRSR602976-1"
FT BINDING 194
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR602976-2"
FT BINDING 222
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|PIRSR:PIRSR602976-1"
FT BINDING 288..291
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|PIRSR:PIRSR602976-1"
FT BINDING 356
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000256|PIRSR:PIRSR602976-1"
SQ SEQUENCE 384 AA; 44657 MW; 69D54D749E4AFE7F CRC64;
MGLVCSRNRR YRDSDPEENA QAAEIERRIE PEPKAEKHIQ KLLLLGAGES GKSTIFKQIK
LLFQTGFDEA ELRSYTPVIF ANVYQTIKVL HDGAKELAQN DLNSAKYVIS DESKDIGEKL
SEIGSRLDYP HLTKDLAKEI ETLWEDAAIQ ETYARGNELQ VPDCTKYFME NLQRLSDANY
VPTKGDVLYA RVRTTGVVEI QFSPVGENKR SGEVYRLFDV GGQRNERRKW IHLFEGVTAV
IFCAAISEYD QTLFEDESKN RLMETKELFE WILKQPCFEK TSFILFLNKF DIFEKKILNV
PLNVCEWFKD YQPVSSGKQE IEHAYEFVKK KFEELYFQSS APDRVDRVFK IYRTTALDQK
VVKKTFKLVD ETLRRRNLFE AGLL
//
