relaxed states. PARIETAL LOBE – One of the four subdivisions of the cerebral cortex*. It plays a role in sensory processes, attention and language. PEPTIDES – Chemical substances made of larger number of amino acid* molecules (up to 99) and often biologically active (e.g. hormones*, neurotrophic factors*). PERIPRHERAL NERVOUS SYSTEM (PNS) - Neural tissue outside of the brain and spinal cord; includes axons of sensory and motor neurones innervating the periphery. PHOSPHORYLATION – A process of attaching a phosphate group to a molecule of, for instance, a protein which makes an enzyme* or a receptor*. It leads to a change in the biological activity of the receiving molecule. An important process which may modify the properties of neuroactive substances and than entire neurones. It often results from second messenger* activity. PITUITARY GLAND – An endocrine organ closely linked with the hypothalamus. It
110. (a) avoid attracting a mate of a different species ; ora ensure reproductive isolation ; 1 max (b) (i) diffusion ; 1 (ii) so that they do not receive oxygen constantly ; there are mitochondria between them and the cell surface ; 1 max (c) mitochondria / aerobic respiration / oxidative phosphorylation, inhibited only briefly ; oxygen concentration decreases again ; preventing, action of luciferase / production of light ; each flash short ; ora e.g. so not continuously lit AVP ; 2 max + + (d) active transport ; A e.g. Na /K pump protein synthesis ; synthesis of named substance ;
4. TNF retseptorid - monomeersed erinevalt klass I ja klass II, FAS ligand kasutab seda tüüpi retseptoreid 5. Kemokiini retseptorid – kompleks kahest valgust, G – valk ja membraane läbivad G-valguga seotud retseptorid. Maitsmistunne. Erinevate tsütokiinide signaal võib käivitada sama signaalraja ka raku sees, või põhjustada sama asjade sisselülitumine tuumas. Signal transduction mediated by cytokine receptors = A series of protein tyrosine phosphorylation Signaali ülekanne tuuma tüüpiline on et kui retseptorile seondub signaalmolekul siis see toob kaasa retseptori dimeriseerumise ja retseptoriga seotud rakus sisemuses olevate kinaaside aktivatsiooni. Enamasti kinaasid JAKid. See toob kaasa dimeriseerunud STAT saab läbida tuumamambraani ja osaleda transkriptsioonil, seondudes Tfdega. Meeles pidada türosiin kinaasse aktiivsega molekulid, nende dimeriseerumine. Retseptorite ristsidumine ja oligomeriseerumine.
Püruvaatkinaas: Disease Pyruvate kinase-3 http://www.kegg.com/dbget-bin/www_bget?omim+179050 Pyruvate kinase, liver and RBC type http://www.kegg.com/dbget-bin/www_bget?omim+609712 Reference 1 Boyer, P.D. Pyruvate kinase. In: Boyer, P.D., Lardy, H. and Myrback, K. (Eds.), The Enzymes, 2nd edn., vol. 6, Academic Press, New York, 1962, pp. 95-113. 2 Kornberg, A. and Pricer, W.E. Enzymatic phosphorylation of adenosine and 2,6-diaminopurine riboside. J. Biol. Chem. 193 (1951) 481-495. 3 Kubowitz, F. and Ott, P. Isolierung von Garungsfermenten aus menschlichen Muskeln. Biochem. Z. 317 (1944) 193-203. 4 Strominger, J.L. Enzymatic synthesis of guanosine and cytidine triphosphates: a note on the nucleotide specificity of the pyruvate phosphokinase reaction. Biochim. Biophys. Acta 16 (1955) 616-618. 5
The primary fuels for muscle cells include by creatine kinase. This reaction is easily phosphocreatine, glycogen, glucose lactate, reversible and phosphocreatine supplies free fatty acids, and triglycerides. Glucose can be readily restored when ATP demand and glycogen are the preferred substrates for is low. In living muscle, when activity is muscle metabolism and can be utilized either intense, this system can be advantageous, as aerobically (oxidative phosphorylation) or it consumes H+ and thus can reduce the anaerobically (anaearobic glycolysis). Lipid muscle cell acidosis that is associated with and lactate utilization require oxygen. Lipids anaerobic glycolysis. Another advantage of are a very energy-dense storage system and the system is that the catalyzing enzyme is are very efficient with respect to the high located very close to the actomyosin ATPase
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