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The nucleus has an inner and an outer membrane and is perforated through 3000-4000 nuclear pores. Each pore having of a nuclear pore complex of more than 100 several proteins organized in a hexagonal array. Whereas little molecules can pass by the pore by free diffusion and large proteins entering the nucleus need a nuclear localization signal. That is four to eight amino acids long and is rich in the positively charged amino acids arginine and lysine as well as commonly having proline, and is situated internally within the polypeptide chain. The protein is taken by the pore in an ATP- requires step and enters the nucleus without cleavage of the localization signal.
Figure: Uptake of proteins into the mitochondrial matrix
To synthesize glycogen two enzymes are needed: 1. UDP-glucose pyrophosphorylase catalyzes the synthesis of UDP-glucose from UTP and glucose 1-phosphate: The py
Q. What is the name of the terminal portion of the axon? The terminal portion of the axon is called as presynaptic membrane Through, this membrane neurotransmitters are release
Brefily describe diffusion ? Diffusion : Diffusion is the process in which there is a net movement of particles of a substance from an area of higher concentration to an are
Nonsurgical retreatment will be the preferred choice -Less invasive .. not cause problem to the pt. -Less traumatic postoperative .. most probably no post operative pain
discuss the stereo isomerism of monosaccharides
What Factors causing short-term changes in intra-ocular pressure 1) Arterial blood pressure 2) Systemic venous pressure (SVP) 3) Mechanical pressure 4) Plasma osmolari
Define crucial periods of a woman's life - pregnancy and lactation? In this unit, we studied about the most crucial periods of a woman's life, pregnancy and lactation, especial
Define Importance of Nutrition in Human Body? Nutrition is increasingly being recognized as an important determinant, which modulates the biological process of ageing. Poor nut
What is Radiographic Assessment Radiographic Assessment: Radiographic examination is very different with implants than with teeth. Radiographs are frequently used in implant
What is bicuspid aortic? Bicuspid aortic valve is the most common form of CHD seen in adults. Isolated bicuspid aortic valves may be stenotic or non-stenotic to start with. T
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