GNAI_PLATR
ID GNAI_PLATR Reviewed; 354 AA.
AC P51876;
DT 01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 2.
DT 03-AUG-2022, entry version 98.
DE RecName: Full=Guanine nucleotide-binding protein G(i) subunit alpha;
DE AltName: Full=Adenylate cyclase-inhibiting G alpha protein;
OS Planorbella trivolvis (Marsh rams-horn) (Helisoma trivolvis).
OC Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Gastropoda;
OC Heterobranchia; Euthyneura; Panpulmonata; Hygrophila; Lymnaeoidea;
OC Planorbidae; Planorbella.
OX NCBI_TaxID=283763;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC STRAIN=Oregon red; TISSUE=Central ganglion;
RX PubMed=7508312; DOI=10.1016/0928-4257(93)90006-f;
RA Durgerian S., Bahls F., Richmond J., Doyle R.T., Larson D.D., Haydon P.G.;
RT "Roles for arachidonic acid and GTP-binding proteins in synaptic
RT transmission.";
RL J. Physiol. Paris 87:123-137(1993).
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(i/o/t/z) subfamily.
CC {ECO:0000305}.
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DR EMBL; L18922; AAC41538.1; -; mRNA.
DR AlphaFoldDB; P51876; -.
DR SMR; P51876; -.
DR GO; GO:0110165; C:cellular anatomical entity; IEA:UniProt.
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:0007188; P:adenylate cyclase-modulating 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; IPR001408; Gprotein_alpha_I.
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; PR00441; GPROTEINAI.
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; Myristate;
KW Nucleotide-binding; Palmitate; Transducer.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000250"
FT CHAIN 2..354
FT /note="Guanine nucleotide-binding protein G(i) subunit
FT alpha"
FT /id="PRO_0000203686"
FT DOMAIN 32..354
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 173..181
FT /note="G2 motif"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01230"
FT REGION 196..205
FT /note="G3 motif"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01230"
FT REGION 265..272
FT /note="G4 motif"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01230"
FT REGION 324..329
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 175..181
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250"
FT BINDING 181
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000250"
FT BINDING 200..204
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250"
FT BINDING 269..272
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250"
FT BINDING 326
FT /ligand="GTP"
FT /ligand_id="ChEBI:CHEBI:37565"
FT /evidence="ECO:0000250"
FT LIPID 2
FT /note="N-myristoyl glycine"
FT /evidence="ECO:0000255"
FT LIPID 3
FT /note="S-palmitoyl cysteine"
FT /evidence="ECO:0000255"
SQ SEQUENCE 354 AA; 40543 MW; 325973DA217A80E4 CRC64;
MGCVTSQEDK AAVERSKQID KSLRMDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEKG
YSQEECLQYN PVVYSNAIQS MIAIIKAMGQ LKIQFGHPDR AEEARQFFAL AGHADEGEMS
QELSGIMKRL WKDVGVQECF SRSREYQLND SAEYYLNALD RISAPGYIPT EQDVLRTRVK
TTGIVETHFT FKDLHFKMFD VGGQRSERKK WIHCFEGVTA IIFIVAMSEY DLTLAEDQEM
NRMMESMKLF DSICNNKWFT ETSIILFLNK KDLFEEKIKK SPLTICFPEY TGANTYEEAA
AYIQLQFENL NKKKDTKEIY SHFTCATDTN NVQFVFDAVT DVIIKNNLKD CGLF