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Damaged Blood Vessels
Added: 447 days ago From cagatay | global.duration: 6.00 | Views: 999 | Comments: 0

Damaged Blood Vessels
Added: 447 days ago From cagatay | global.duration: 6.00 | Views: 990 | Comments: 0

Proteasomes are large protein complexes inside all eukaryotes and archaea as well as in some bacteria. In eukaryote they are located in the nucleus and the cytoplasm. The main function of the proteasome is to degrade unneeded or damaged proteins by proteolysis a chemical reaction that breaks peptide bonds.
Added: 1140 days ago From second | global.duration: 131.90 | Views: 4270 | Comments: 1
  

Proteasomes are large protein complexes inside all eukaryotes and archaea, as well as in some bacteria. In eukaryotes, they are located in the nucleus and the cytoplasm.The main function of the proteasome is to degrade unneeded or damaged proteins by proteolysis, a chemical reaction that breaks peptide bonds. Enzymes that carry out such reactions are called proteases. Proteasomes are a major mecha...
Added: 1117 days ago From technician | global.duration: 44.50 | Views: 4291 | Comments: 0
   

Nucleotide excision repair is a DNA repair mechanism. DNA constantly requires repair due to damage that can occur to bases from a vast variety of sources including chemicals but also ultraviolet (UV) light from the sun. Nucleotide excision repair (NER) is a particularly important mechanism by which the cell can prevent unwanted mutations by removing the vast majority of UV-induced DNA damage (most...
Added: 1104 days ago From okur | global.duration: 48.98 | Views: 11057 | Comments: 0
     

The genetic material DNA is under constant attack from the environment. There are two parts in this animation. The first half of the animation illustrates how DNA is damaged by reactive free radical and is protected by SOD/CAT. The second half shows methylation by the endogeneous cofactor S-adenosyl methionine (SAM). The methylation damage is reversed by action of by alkytransferase such as AGT. A...
Added: 1097 days ago From tubeman | global.duration: 139.83 | Views: 3803 | Comments: 0

Biology > Introduction to Biology/n * Email this page/nVideo Lectures - Lecture 29/nTopics covered: /nStem Cells/Cloning 1/nInstructor: /nProf. Robert A. Weinberg/nTranscript - Lecture 29/nGood morning, class. Nice to see you here. Yesterday morning I was in Australia and today I'm here. And it's nice to be back. It's a long way home. We're talking today about the issues of growth and differe...
Added: 526 days ago From mitlectures | global.duration: 3030.00 | Views: 4181 | Comments: 0

Biology > Introductory Biology/n * Email this page/nVideo Lectures - Lecture 5/nTopics covered: /nBiochemistry IV/nInstructor: /nProf. Graham Walker/nTranscript - Lecture 5/nI've emphasized in the first lecture, you know, that there's a lot of stuff that happens just in your ordinary life. I saw two examples of this. Yesterday's Boston Globe, just on the front page there was a discovery about...
Added: 526 days ago From mitlectures | global.duration: 2840.00 | Views: 4859 | Comments: 0
     

The genetic material DNA is under constant attack from the environment. There are two parts in this animation. The first half of the animation illustrates how DNA is damaged by reactive free radical and is protected by SOD/CAT. The second half shows methylation by the endogeneous cofactor S-adenosyl methionine (SAM). The methylation damage is reversed by action of by alkytransferase such as A...
Added: 470 days ago From cagatay | global.duration: 139.00 | Views: 1967 | Comments: 0

How the Body Works When the Skin is Cut When the skin is cut, blood vessels are also damaged and blood seeps into the wound cavity where it clots. The fibrin strands in the clot shrink, pulling the edges closer together. Later the cells in the cut edges start to multiply and migrate into the clot. At the same time, macrophages enter the wounded area and begin to remove dead cells, the blood ...
Added: 468 days ago From okur | global.duration: 62.00 | Views: 2440 | Comments: 0

Cytotoxic T-cells is a sub group of T lymphocytes cells that are capable of inducting the death of infected somatic or tumor cells; they kill virus-affected cells, pathogens, and damaged or dysfunctional cells. Most cytotoxic T cells express T-cell receptors (TcRs) that can recognize a specific antigenic peptide bound to Class I MHC molecules, present on all nucleated cells, and a glycoprotein cal...
Added: 441 days ago From sakedi | global.duration: 218.00 | Views: 2831 | Comments: 0

Neurologists are using nanotechnology to build tiny bridges that brain cells can grow on to reconnect cells damaged by a stroke or injury. http://www.sciencentral.com/video/
Added: 154 days ago From mnazirokur | global.duration: 92.00 | Views: 507 | Comments: 0
 
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Related Tags: Damaged Blood Vessels proteasome nucleotideexcisionrepair dnadamage Stem Cells Cloning Lecture Biochemistry IV Graham Walker Protection Antioxidant Radical methylation adenosyl methionine SAM URI animation When the Skin Cut cytotoxic tcells neurologist neurology stroke brain mind nerve nano technology science research sciencentral Healing Bridges