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Fatty acids formed in the geyser accumulate in droplets. Evaporation of the droplets causes the fatty acids to aggregate into small wind-blown particulates. This animation illustrates a theorietical means by which fatty acids may have been distributed on the early Earth video by Janet Iwasa at onemicron
Added: 996 days ago From ayseni | global.duration: 47.41 | Views: 2607 | Comments: 0

Although the vesicle structure itself as a whole is extremely stable, individual fatty acids within vesicles are extremely dynamic and are constantly joining and leaving the vesicle membrane. Protonated fatty acids (shown by the glowing hydrogen in the head group and the lighter colored tail) readily flip between the inner and outer leaflets of the membrane. video by Janet Iwasa at onemicron
Added: 996 days ago From ayseni | global.duration: 28.60 | Views: 3622 | Comments: 0

Genetics (from Ancient Greek γενετικός genetikos, “genitive” and that from γένεσις genesis, “origin”[1][2][3]), a discipline of biology, is the science of heredity and variation in living organisms.[4][5] The fact that living things inherit traits from their parents has been used since prehistoric times to improve crop plants and animals through selective breeding. However,...
Added: 434 days ago From jamvj | global.duration: 282.00 | Views: 8368 | Comments: 0
    

In this video blog I discuss the use of proton pump inhibitors . A recent study has found why people stay on these drugs for long term use instead of the 6-8 week suggested use. They call it "acid rebound phenomenon"? What is acid rebound phenomenon? What does it to your body? What can you do naturally to help with heartburn? Turn in and find out the answer to these questions and more...
Added: 370 days ago From second | global.duration: 214.00 | Views: 1306 | Comments: 0

What is Esophageal Dilation? Esophageal dilation is a procedure that allows your doctor to dilate, or stretch, a narrowed area of your esophagus [swallowing tube]. Doctors can use various techniques for this procedure. Your doctor might perform the procedure as part of a sedated endoscopy. Alternatively, your doctor might apply a local anesthetic spray to the back of your throat and then pass a w...
Added: 370 days ago From cancer | global.duration: 98.00 | Views: 5922 | Comments: 0
 

Helicases are a class of enzymes vital to all living organisms. They are motor proteins that move directionally along a nucleic acid phosphodiester backbone, separating two annealed nucleic acid strands (i.e. DNA, RNA, or RNA-DNA hybrid) using energy derived from nucleotide hydrolysis. Many cellular processes (DNA replication, RNA transcription, DNA recombination, DNA repair, Ribosome biogenesi...
Added: 1264 days ago From benchwork | global.duration: 103.10 | Views: 35400 | Comments: 1
   

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: 1137 days ago From second | global.duration: 47.65 | Views: 18259 | Comments: 0
     

Deoxyribonucleic acid, or DNA, is a nucleic acid molecule that contains the genetic instructions used in the development and functioning of all known living organisms. The main role of DNA is the long-term storage of information and it is often compared to a set of blueprints, since DNA contains the instructions needed to construct other components of cells, such as proteins and RNA molecules. The...
Added: 1127 days ago From siere | global.duration: 497.71 | Views: 13738 | Comments: 0
   

2 dimension of tRNA structure. Video ref: hhmi.org More info about tRNA; Transfer RNA (abbreviated tRNA), first hypothesized by Francis Crick, is a small RNA chain (73-93 nucleotides) that transfers a specific amino acid to a growing polypeptide chain at the ribosomal site of protein synthesis during translation. It has a 3' terminal site for amino acid attachment. This covalent linkage is cataly...
Added: 1123 days ago From sana | global.duration: 22.30 | Views: 7441 | Comments: 0

Amino acids are the basic structural building units of proteins. They form short polymer chains called peptides or longer chains either called polypeptides or proteins. The process of such formation from an mRNA template is known as translation which is part of protein biosynthesis. Twenty amino acids are encoded by the standard genetic code and are called proteinogenic or standard amino acids. Ot...
Added: 1116 days ago From cell | global.duration: 139.10 | Views: 8628 | Comments: 0
   

A simple animation showing the mutation of a single nucleotide on codon 178 PrP gene which causes a change in the encoded amino acid from aspartic acid to asparagine.
Added: 1116 days ago From technician | global.duration: 32.91 | Views: 3789 | Comments: 0

This video shows how rnai is discovered in very simpe way. www.hhmi.org Text info: RNA interference (also called "RNA-mediated interference", abbreviated RNAi) is a mechanism for RNA-guided regulation of gene expression in which double-stranded ribonucleic acid inhibits the expression of genes with complementary nucleotide sequences. Conserved in most eukaryotic organisms, the RNAi pathway is tho...
Added: 1104 days ago From second | global.duration: 466.80 | Views: 8610 | Comments: 2
     

This video shows how rnai is discovered in very simpe way. www.hhmi.org Text info: RNA interference (also called "RNA-mediated interference", abbreviated RNAi) is a mechanism for RNA-guided regulation of gene expression in which double-stranded ribonucleic acid inhibits the expression of genes with complementary nucleotide sequences. Conserved in most eukaryotic organisms, the RNAi pathway is tho...
Added: 1104 days ago From second | global.duration: 452.69 | Views: 4857 | 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: 1097 days ago From tubeman | global.duration: 197.70 | Views: 8987 | Comments: 0
     
 

Related Tags: fattyacid mRNA animation Ribonucleic Brenda Watson reflux proton pump inhibitors rebound phenomenon Heidelberg test gastric disorders Esophageal Dilation Endoscopy Colonoscopy GERD Esophagus stricture Barrett dilator heartburn chest pain 06.2-DNA_helicase signal trna aminoacid Insomnia rnai deacetylation