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In biology, signal transduction refers to any process by which a cell converts one kind of signal or stimulus into another, most often involving ordered sequences of biochemical reactions inside the cell, that are carried out by enzymes and linked through second messengers resulting in what is thought of as a "second messenger pathway". Such processes are usually rapid, lasting on the order of mil...
Added: 1089 days ago From tubeman | global.duration: 106.71 | Views: 5464 | Comments: 0

Wiki text: In biology, signal transduction refers to any process by which a cell converts one kind of signal or stimulus into another, most often involving ordered sequences of biochemical reactions inside the cell, that are carried out by enzymes, activated by second messengers resulting in what is thought of as a signal transduction pathway. Such processes are usually rapid, lasting on the order...
Added: 1003 days ago From arsinsol | global.duration: 73.43 | Views: 9036 | Comments: 1
     

A bunch of pictures made into an animation through Windows Movie Maker.
Added: 463 days ago From cagatay | global.duration: 33.00 | Views: 1485 | Comments: 0

The signal recognition particle (SRP) is a protein-RNA complex that recognizes and transports specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes. The eukaryotic SRP is composed of six distinct polypeptides bound to an RNA molecule (the 7SL RNA), with GTPase activity. In the GTP-bound state, it recognizes an endoplasmic reticulum signal sequence of e...
Added: 1130 days ago From second | global.duration: 47.65 | Views: 18059 | Comments: 0
     

This Maya animation depicts the process by which the translating ribosome is halted by the signal recognition particle (SRP). The ribosome is subsequently brought to the membrane and docked with a channel to translocate the nascent polypeptide chain. video by Eric Keller, Steve Davy / Stylus Visuals
Added: 970 days ago From sertan | global.duration: 83.70 | Views: 35388 | Comments: 0

Transduction is the process by which bacterial DNA is moved from one bacterium to another by a virus. Sometimes, small pieces of bacterial DNA, rather than the bacteriophage genome, will be packaged into the bacteriophage genome.
Added: 463 days ago From cagatay | global.duration: 45.00 | Views: 1815 | Comments: 0

Histone deacetylases (HDAC) (EC number 3.5.1) are a class of enzymes that remove acetyl groups from an ε-N-acetyl lysine amino acid on a histone. Its action is opposite to that of histone acetyltransferase. Deacetylation removes acetyl groups from histone tails, causing the histones to wrap more tightly around the DNA and interfering with the transcription of genes by blocking access by tran...
Added: 1089 days ago From tubeman | global.duration: 197.70 | Views: 8929 | Comments: 0
     

Biology > Introduction to Biology/n * Email this page/nVideo Lectures - Lecture 28/nTopics covered: /nNervous System 3/nInstructor: /nDr. Andrew Chess, Guest Lecturer/nTranscript - Lecture 28/nHello, everybody. Can we get started? So my name is Andrew Chess. And I'm lecturing today replacing Eric Lander for the day. He had to be out of town, something that he could not reschedule. He really t...
Added: 518 days ago From mitlectures | global.duration: 2570.73 | Views: 4528 | Comments: 0

Abnova offers a variety of arrays for protein expression profiling. These arrays are designed for researchers to study highly relevant proteins in the specific research fields like Angiogenesis, Apoptosis, Cancer Marker, Cell Cycle, Cytokine, Hematopoiesis, Hormone, Signal Transduction and Stem Cell.
Added: 135 days ago From abnova | global.duration: 224.00 | Views: 731 | Comments: 0

The humoral immune response B-cells (so-called because they mature in the bone marrow) are white blood cells that work chiefly by producing soluble substances known as antibodies. Each B cell is programmed to make one specific antibody. When a B cell encounters its specific or eliciting antigen (along with various accessory cells), it differentiates into a plasma cell. The latter is essentially a...
Added: 1090 days ago From tubeman | global.duration: 0.08 | Views: 19404 | Comments: 0
   

In mammals, the controlling clock component that generates a 24-hour rhythm is the suprachiasmatic nucleus (SCN), located in a part of the brain called the hypothalamus. The SCN produces a signal that can keep the rest of the body on an approximately 24-hour schedule. This animation illustrates the location of the SCN in the human brain.
Added: 1119 days ago From okur | global.duration: 50.05 | Views: 2944 | Comments: 0
     

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: 1109 days ago From technician | global.duration: 44.50 | Views: 4230 | Comments: 0
   

This animation describes what takes place with a G protein receptor. G Protein Coupled Receptors (GPCRs) are proteins embedded in the surface of cells. GPCRs comprise the largest superfamily of proteins in the body. More than 1,000 different GPCRs have been identified since the first receptors were cloned. These proteins receive chemical signals from outside the cell and pass the signal into the c...
Added: 1089 days ago From tubeman | global.duration: 16.68 | Views: 11099 | Comments: 2
     

Microbial populations achieve genetic diversity through horizontal gene transfer. Bacteria may transfer genes from one to another by conjugation, transformation, or transduction. Scientists often exploit these processes through recombinant DNA
Added: 1089 days ago From tubeman | global.duration: 401.83 | Views: 3871 | Comments: 0
  
 
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Related Tags: signaltransduction ap biology linkinchains srp medicine Phage Microbiology deacetylation Nervous System Lecture Antibody Array for Protein Expression Profiling Abnova cell humoral Suprachiasmatic proteasome gprotein genetictransfer