Structure and Functions of Biomembranes

Cell structure

Phospholipid
phosphatidylcholine

Phospholipid phosphatidylethanolamine

Phospholipid phosphatidylinositol

Sphingolipid ceramide

Sphingophospholipid
sphingomyelin

Glycolipid
galactosyl ceramide

Cholesterol

Integral protein-receptor
(glycoprotein)

Functions of biological membranes

Simple diffusion

Facilitated diffusion

Ion channels

Regulated calcium
channel

The Mechanism of Hormonal Signal Transmission

Peptide and protein hormones
Insulin
C-peptide

Hormones - amino acid derivatives
Adrenaline

Steroid hormones

Arachidonic acid

Eicosanoids
arachidonic acid
prostaglandins
leukotrienes
thromboxanes

Adenylate cyclase messenger system

Termination of signal

Phosphatidyl inositol calcium system
PiP2

Guanylate cyclase messenger system

Hormone-binding domain
ATP-binding and tyrosin kinase domains
Catalytic receptor

Mechanism
of lipophilic hormones action

Mechanism of lipophilic hormones action