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Glossary: G

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G
G alpha 12:
alpha subunit of a heterotrimeric guanine nucleotide-binding protein (Galpha12); Connections Map Component -- G alpha 12
G alpha 13:
alpha subunit of a heterotrimeric guanine nucleotide-binding protein (Galpha13); Connections Map Component -- G alpha 13
G alpha i:
alpha subunit of a heterotrimeric guanine nucleotide-binding protein (Galphai); Connections Map Component -- G alpha i
G alpha olf:
alpha subunit of a heterotrimeric guanine nucleotide-binding protein (Galphaolf); Connections Map Component --
G alpha q:
alpha subunit of a heterotrimeric guanine nucleotide-binding protein (Galphaq); Connections Map Component -- G alpha q
G alpha s:
alpha subunit of a heterotrimeric guanine nucleotide-binding protein (Galphas); Connections Map Component -- G alpha s
G alpha t:
alpha subunit of a heterotrimeric guanine nucleotide-binding protein (Galphat); Connections Map Component -- G alpha t2
G betagamma:
βγ subunits of heterotrimeric guanine nucleotide-binding proteins (G proteins) (Gβγ); Connections Map Component -- G beta/gamma
G protein:
heterotrimeric guanosine triphosphate (GTP)-binding protein
G12:
heterotrimeric guanine nucleotide-binding protein (G protein) (G12) with the Galpha12 alpha subunit; Connections Map Component -- G12
G13:
heterotrimeric guanine nucleotide-binding protein (G protein) (G13) with the Galpha13 alpha subunit; Connections Map Component -- G13
GAB:
stands for Grb2-associated binding protein; a family of scaffolding or adaptor proteins, which includes mammalian Gab1, 2, 3, and 4, Drosophila DOS, and Caenorhabditis elegans Soc1; Connections Map Component -- Grb2-associated binding proteins
GABA:
stands for γ-aminobutyric acid; (1) a neurotransmitter; (2) a plant guidance factor
GADD45:
stands for growth arrest and DNA-damage inducible gene; the family includes GADD45alpha, GADD45β, and GADD45γ; Connections Map Component -- GADD45
Gads:
a Grb2-related adaptor protein involved in T cell signaling; Connections Map Component -- Gads
GAKIN:
stands for guanylate kinase-associated kinesin (also known as KIF13B); a plus-end directed microtubule motor that contributes to the establishment of cell polarity
gammaC:
stands for common gamma chain (γC); a member of the type I cytokine receptor family; Connections Map Component -- The common gamma chain
GAP:
stands for guanosine triphosphatase (GTPase)-activating protein; proteins that stimulate the GTPase activity of heterotrimeric guanine nucleotide-binding protein (G protein) alpha subunits or monomeric, small GTPases, such as Ras; Connections Map Components -- p190 Rho GTPase activating protein | Arf-GAP containing SH3 domain,ankyrin repeats,and PH domain | Rap1 GTPase activating protein | G alpha z-GAP
GARP:
a DNA-binding domain named for the proteins in which it was originally identified: GOLDEN2 in maize, ARRs (Arabidopsis response regulators), and Psr1 protein from Chlamydomonas; Connections Map Component -- Response regulator
GAS:
stands for γ-interferon activation sequence
Gas1:
stands for growth arrest-specific gene 1; a member of the glial cell-derived neurotrophic factor receptor alpha family; Connections Map Component -- Growth arrest-specific 1
GC:
stands for germinal center; a subset of cells in lymphoid tissue
GCK:
stands for germinal center kinase; a kinase that participates in mitogen-activated protein kinase signaling; Connections Map Component -- Germinal center kinase
GCKR:
stands for germinal center kinase (GCK)-related
GCN2:
stands for general control nonrepressed 2; an eIF2alpha kinase
GDNF:
stands for glial cell line-derived neurotrophic factor
GEF:
stands for guanine nucleotide exchange factor; also known as guanine nucleotide releasing protein (GNRP); proteins that stimulate GTPases by catalyzing the exchange of guanosine diphosphate (GDP) for guanosine triphosphate (GTP); Connections Map Components -- Vav | Ras guanine nucleotide releasing protein | Rho guanine nucleotide exchange factor | Epac
GEM:
stands for glycosphingolipid-enriched microdomain; also known as lipid raft or detergent-insoluble glycolipid-enriched raft domain (DIG)
Gem1:
stands for GTPase EF hand protein of mitochondria 1; the yeast homolog of Miro
GFRa:
stands for glial cell-derived neurotrophic factor receptor alpha (GFRalpha); a family of glycosyl phosphatidylinositol-anchored cell surface proteins
GGL:
stands for Gγ-like; a domain that is similar to the γ subunit of heterotrimeric guanine nucleotide-binding proteins (G proteins) and mediates interactions with the β subunit of G proteins
GH:
stands for growth hormone; a peptide hormone secreted by the pituitary gland
GHBP:
stands for growth hormone binding protein; a soluble fragment of the growth hormone receptor that may arise by alternative splicing or cleavage of the receptor
GHR:
stands for growth hormone receptor; a receptor of the cytokine, prolactin, and growth hormone family that interacts with Janus kinases
Gi:
heterotrimeric guanine nucleotide-binding protein (G protein) (Gi) with the Galphai alpha subunit; Connections Map Component -- Gi
GIRK:
stands for G protein-activated inwardly rectifying potassium channel; Connections Map Component -- G protein-gated inwardly rectifying K+ channels
GLP-1:
stands for glucagon-like peptide-1-(7-36)-amide; hormone secreted by intestinal L cells
GNEF:
stands for guanine nucleotide exchange factor (GEF); also known as guanine nucleotide releasing protein (GNRP); proteins that stimulate GTPases by catalyzing the exchange of guanosine diphosphate (GDP) for guanosine triphosphate (GTP); Connections Map Components -- Vav | Ras guanine nucleotide releasing protein | Rho guanine nucleotide exchange factor | Epac
GODZ:
stands for Golgi apparatus specific protein with a DHHC zinc finger domain; a Golgi-associated palmitoyl acyl transferase that palmitoylates subunits of GABAA receptors subunits and AMPA-type glutamate receptors
Golf:
olfactory heterotrimeric guanine nucleotide-binding protein (G protein) (Golf) with the Galphaolf alpha subunit; Connections Map Component -- G alpha s
gp130:
signal-transducing receptor subunit for the interleukin 6 (IL-6)-type or gp130 cytokines consisting of IL-6, IL-11, leukemia inhibitory factor (LIF), oncostatin M (OSM), ciliary neurotrophic factor (CNTF), cardiotrophin-1 (CT-1), and cardiotrophin-like cytokine (CLC); Connections Map Component -- Interleukin-6 receptor
GPCR:
stands for G protein-coupled receptor; a large family of receptors with seven transmembrane domains that couple to heterotrimer guanine nucleotide-binding proteins (G proteins); Connections Map Component -- Guanine nucleotide-binding protein (G protein)-coupled receptors
GPI:
stands for glycosylphosphatidylinositol; proteins can be posttranslationally modified by the addition of this moiety allowing membrane association
GPR:
(1) stands for G protein regulator, proteins that control the activity of heterotrimeric guanine nucleotide-binding proteins (G proteins); (2) stands for G protein regulatory motif, also known as a GoLoco motif, a 25 to 30 amino acid domain found in proteins that regulate G protein activity, for example, activators of G protein signaling (AGS) and regulators of G protein signalig (RGS); Connections Map Component -- Regulator of G protein signaling
Gq:
heterotrimeric guanine nucleotide-binding protein (G protein) (Gq) with the Galphaq alpha subunit; Connections Map Component -- Gq
GR:
stands for glucocorticoid receptor; Connections Map Component -- Glucocorticoid receptor-interacting protein-1
Grab-2:
stands for growth factor receptor-bound protein 2; also known as Grb2 and Sem5; a cytosolic adaptor protein that contains two Src homology 3 (SH3) domains flanking a central SH2 domain; Connections Map Component -- Growth factor receptor-bound protein 2
Grb-2:
stands for growth factor receptor-bound protein 2; also known as Grab-2 and Sem5; a cytosolic adaptor protein that contains two Src homology 3 (SH3) domains flanking a central SH2 domain; Connections Map Component -- Growth factor receptor-bound protein 2
GRIP:
stands for (1) glutamate receptor interacting protein; (2) glucocorticoid receptor interacting protein; a nuclear receptor coactivator; Connections Map Component -- Glucocorticoid receptor-interacting protein-1
GRK:
stands for G protein-coupled receptor kinase; a serine-threonine protein kinase; Connections Map Component -- G protein-coupled receptor kinase
Gs:
heterotrimeric guanine nucleotide-binding protein (G protein) (Gs) with the Galphas alpha subunit; Connections Map Component -- Gs
GSH:
glutathione
GSK:
stands for glycogen synthase kinase; for example, GSK-3 is a constitutively active serine-threonine protein kinase; Connections Map Component -- Glycogen synthase kinase-3
GSNO:
stands for S-nitrosoglutathione; an nitric oxide (NO) donor
GST:
stands for glutathione-S-transferase
Gt:
heterotrimeric guanine nucleotide-binding protein (G protein) (Gt) with the Galphat alpha subunit; also known as transducin
GTP:
stands for guanosine triphosphate
GTPase:
stands for small guanosine triphosphatase; molecular switches activated by binding of guanosine triphosphate (GTP); Connections Map Components -- Cdc42 | Rac GTPase | RhoA GTPase | Ras GTPase | Rap1 GTPase | Ral GTPase | R-Ras | Rho GTPase
GUS:
β-glucuronidase; a protein frequently encoded in reporter gene constructs

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