ID   GNAQ_LYMST              Reviewed;         353 AA.
AC   P38411;
DT   01-OCT-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1994, sequence version 1.
DT   03-AUG-2022, entry version 101.
DE   RecName: Full=Guanine nucleotide-binding protein G(q) subunit alpha;
DE   AltName: Full=Guanine nucleotide-binding protein alpha-q;
OS   Lymnaea stagnalis (Great pond snail) (Helix stagnalis).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Gastropoda;
OC   Heterobranchia; Euthyneura; Panpulmonata; Hygrophila; Lymnaeoidea;
OC   Lymnaeidae; Lymnaea.
OX   NCBI_TaxID=6523;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RX   PubMed=7601100; DOI=10.1111/j.1432-1033.1995.0193i.x;
RA   Knol J.C., Ramnatsingh S., van Kesteren E.R., van Minnen J., Planta R.J.,
RA   van Heerikhuizen H., Vreugdenhil E.;
RT   "Cloning of a molluscan G protein alpha subunit of the Gq class which is
RT   expressed differentially in identified neurons.";
RL   Eur. J. Biochem. 230:193-199(1995).
CC   -!- FUNCTION: Guanine nucleotide-binding proteins (G proteins) are involved
CC       as modulators or transducers in various transmembrane signaling
CC       systems.
CC   -!- SUBUNIT: G proteins are composed of 3 units; alpha, beta and gamma. The
CC       alpha chain contains the guanine nucleotide binding site.
CC   -!- SIMILARITY: Belongs to the G-alpha family. G(q) subfamily.
CC       {ECO:0000305}.
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DR   EMBL; Z23106; CAA80653.1; -; mRNA.
DR   PIR; S65461; S34347.
DR   AlphaFoldDB; P38411; -.
DR   SMR; P38411; -.
DR   PRIDE; P38411; -.
DR   GO; GO:0001664; F:G protein-coupled receptor binding; IEA:InterPro.
DR   GO; GO:0031683; F:G-protein beta/gamma-subunit complex binding; IEA:InterPro.
DR   GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR   GO; GO:0003924; F:GTPase activity; IEA:InterPro.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0007186; P:G protein-coupled receptor signaling pathway; IEA:InterPro.
DR   CDD; cd00066; G-alpha; 1.
DR   Gene3D; 1.10.400.10; -; 1.
DR   Gene3D; 3.40.50.300; -; 1.
DR   InterPro; IPR000654; Gprotein_alpha_Q.
DR   InterPro; IPR001019; Gprotein_alpha_su.
DR   InterPro; IPR011025; GproteinA_insert.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   PANTHER; PTHR10218; PTHR10218; 1.
DR   Pfam; PF00503; G-alpha; 1.
DR   PRINTS; PR00318; GPROTEINA.
DR   PRINTS; PR00442; GPROTEINAQ.
DR   SMART; SM00275; G_alpha; 1.
DR   SUPFAM; SSF47895; SSF47895; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   PROSITE; PS51882; G_ALPHA; 1.
PE   2: Evidence at transcript level;
KW   GTP-binding; Lipoprotein; Magnesium; Metal-binding; Nucleotide-binding;
KW   Palmitate; Transducer.
FT   CHAIN           1..353
FT                   /note="Guanine nucleotide-binding protein G(q) subunit
FT                   alpha"
FT                   /id="PRO_0000203766"
FT   DOMAIN          32..353
FT                   /note="G-alpha"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01230"
FT   REGION          35..48
FT                   /note="G1 motif"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01230"
FT   REGION          172..180
FT                   /note="G2 motif"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01230"
FT   REGION          195..204
FT                   /note="G3 motif"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01230"
FT   REGION          264..271
FT                   /note="G4 motif"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01230"
FT   REGION          323..328
FT                   /note="G5 motif"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01230"
FT   BINDING         40..47
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
FT   BINDING         47
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250"
FT   BINDING         174..180
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
FT   BINDING         180
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250"
FT   BINDING         199..203
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
FT   BINDING         268..271
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
FT   BINDING         325
FT                   /ligand="GTP"
FT                   /ligand_id="ChEBI:CHEBI:37565"
FT                   /evidence="ECO:0000250"
FT   LIPID           3
FT                   /note="S-palmitoyl cysteine"
FT                   /evidence="ECO:0000255"
FT   LIPID           4
FT                   /note="S-palmitoyl cysteine"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   353 AA;  41566 MW;  980F7604E952A3FD CRC64;
     MACCIPDELK EQKRINQEIE RQLKRDKRDA RRELKLLLLG TGESGKSTFI KQMRIIHGAG
     YSDEDKRSHI KIVYQNIFMA MHAMIRAMDT LNIQYINPAN RENGNMIRQI DYETVTTFDK
     PCVDAIISLW NDDGIQECYD RRREYQLTDS AKYYLDSVER ISQQDYLPTL QDILRVRVPT
     TGIIEYPFDL DSIIFRMVDV GGQRSERRKW IHCFENVTSI MFLVALSEYD QVLVESDNEN
     RMEESKALFR TIITYPWFQN SSVILFLNKK DLLEEKIMHS HLVDYFPEFD GPKKEASTAR
     EFILKMFVEL NPDPDKIIYS HFTCATDTEN IRFVFAAVKD TILQLNLKEY NLV