Chapter 13 - Signaling at the Cell Surface

PKA

________ has two effects on liver and muscle cells:

CGMP synthesis

________ leads to protein kinase G being activated in vascular smooth muscle cells, which help with the muscles relaxation 13.6: Activation of Gene Transcription by G Protein- Coupled Receptors.

GPCR arrestin complex

________ initiates cytosolic kinases, and those cascades lead to the activation of cell growth controlling genes.

Hormone

________ occupied receptors initiate the binding of GTP in the cell, causing Ga to interact with an effector protein.

Extracellular signaling molecules

________ are essential regulators for developing the interactive components of unicellular organisms and aid in the development of growth and physiology of multicellular organisms.

Light

________- activated ospin and the binding of arrestin to phosphorylated ospin activate transducin,

Second messengers

________ and kinase cascades help make signaling pathways more powerful 13.4: G Protein- Coupled Receptors That Regulate Ion Channels.

lipid rafts

When receptors and proteins cluster together, they form ________, which promote the interaction between signaling proteins and this enhances signal transduction 13.3: G Protein- Coupled Receptors That Activate or Inhibit Adenylyl Cylacase.

Trimeric G

________ proteins convert into effector proteins, which help with either becoming another form of messengers or channel proteins in the cells.

IP3

________ opens ________-gated Ca2+ channels in the endoplasmic reticulum.

Ca2+ calmodulin complex

________ helps with the regulation of many different proteins:

Nonprotein intracellular signaling molecules

________ help with the regulation of enzymatic and nonenzymatic proteins.

PKA activation

________ is hormone-induced.

PKA

Kinase A (________) can lead to phosphorylation of CREB protein, and with the CBP /300 coactivator, can cause the transcription of target genes.