How do inositol phosphates regulate calcium signaling?
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How do inositol phosphates regulate calcium signaling? / Putney, J W; Takemura, H; Hughes, A R; Horstman, D A; Thastrup, Ole.
I: F A S E B Journal, Bind 3, Nr. 8, 1989, s. 1899-905.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - How do inositol phosphates regulate calcium signaling?
AU - Putney, J W
AU - Takemura, H
AU - Hughes, A R
AU - Horstman, D A
AU - Thastrup, Ole
PY - 1989
Y1 - 1989
N2 - Activation of a variety of cell surface receptors results in the phospholipase C-catalyzed hydrolysis of the minor plasma membrane phospholipid phosphatidylinositol 4,5-bisphosphate, with concomitant formation of inositol 1,4,5-trisphosphate and diacylglycerol. There is strong evidence that inositol 1,4,5-trisphosphate stimulates Ca2+ release from intracellular stores. The Ca2+-releasing actions of inositol 1,4,5-trisphosphate are terminated by its metabolism through two distinct pathways. Inositol 1,4,5-trisphosphate is dephosphorylated by a 5-phosphatase to inositol 1,4-bisphosphate; alternatively, inositol 1,4,5-trisphosphate can also be phosphorylated to inositol 1,3,4,5-tetrakisphosphate by a 3-kinase. Although the mechanism of Ca2+ mobilization is understood, the precise mechanisms involved in Ca2+ entry are not known; the proposal that inositol 1,4,5-trisphosphate secondarily elicits Ca2+ entry by emptying an intracellular Ca2+ pool is considered.
AB - Activation of a variety of cell surface receptors results in the phospholipase C-catalyzed hydrolysis of the minor plasma membrane phospholipid phosphatidylinositol 4,5-bisphosphate, with concomitant formation of inositol 1,4,5-trisphosphate and diacylglycerol. There is strong evidence that inositol 1,4,5-trisphosphate stimulates Ca2+ release from intracellular stores. The Ca2+-releasing actions of inositol 1,4,5-trisphosphate are terminated by its metabolism through two distinct pathways. Inositol 1,4,5-trisphosphate is dephosphorylated by a 5-phosphatase to inositol 1,4-bisphosphate; alternatively, inositol 1,4,5-trisphosphate can also be phosphorylated to inositol 1,3,4,5-tetrakisphosphate by a 3-kinase. Although the mechanism of Ca2+ mobilization is understood, the precise mechanisms involved in Ca2+ entry are not known; the proposal that inositol 1,4,5-trisphosphate secondarily elicits Ca2+ entry by emptying an intracellular Ca2+ pool is considered.
KW - Animals
KW - Calcium
KW - Calcium Channels
KW - Cell Membrane
KW - Humans
KW - Inositol 1,4,5-Trisphosphate
KW - Inositol 1,4,5-Trisphosphate Receptors
KW - Inositol Phosphates
KW - Phosphorylation
KW - Receptors, Cell Surface
KW - Receptors, Cytoplasmic and Nuclear
KW - Signal Transduction
KW - Sugar Phosphates
KW - Type C Phospholipases
M3 - Journal article
C2 - 2542110
VL - 3
SP - 1899
EP - 1905
JO - F A S E B Journal
JF - F A S E B Journal
SN - 0892-6638
IS - 8
ER -
ID: 43350103