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Rabbit Anti-GEM/FITC Conjugated antibody
background:
Gem belongs to the Rad/Gem/Kir (RGK) subfamily of Ras-related GTPases, which lack typical SLCterminal amino acid motifs for isoprenylation. Rad and Gem bind calmodulin in a Ca2+-dependent manner via this SLCterminal extension, involving residues 278–297 in human Rad. High intracellular Gem levels, which interact with intact microtubules and microfilaments, promote profound changes in cell morphology. Ectopic Gem expression is sufficient to stimulate cell flattening and neurite extension in N1E-115 and SH-SY5Y neuroblastoma cells, suggesting a role for Gem in cytoskeletal rearrangement and/or morphological differentiation of neurons. Gem was also observed in developing trigeminal nerve ganglia in 12.5 day mouse embryos, demonstrating that Gem expression is a property of normal ganglionic development. The interaction of Gem with beta-subunits regulates Ca2+ channel expression at the cell surface. The human Gem gene maps to chromosome 8q22.1.
Function:
GEM belongs to the RAD/GEM family of GTP-binding proteins. It could be a regulatory protein, possibly participating in receptor-mediated signal transduction at the plasma membrane. GEM has guanine nucleotide-binding activity but undetectable intrinsic GTPase activity. Alternative splicing occurs at this locus and two transcript variants encoding the same protein have been identified.
Subunit:
Interacts with calmodulin in a Ca(2+)-dependent manner. Binds ROCK1.
Subcellular Location:
Cell membrane; Peripheral membrane protein; Cytoplasmic side.
Tissue Specificity:
Most abundant in thymus, spleen, kidney, lung, and testis. Less abundant in heart, brain, liver and skeletal muscle.
Post-translational modifications:
Phosphorylated on tyrosine residues.
Similarity:
Belongs to the small GTPase superfamily. RGK family.
Database links:
Entrez Gene: 2669 Human
Entrez Gene: 14579 Mouse
Entrez Gene: 297902 Rat
Omim: 600164 Human
SwissProt: P55040 Human
SwissProt: P55041 Mouse
Unigene: 654463 Human
Unigene: 247486 Mouse
Unigene: 40436 Rat
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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