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3

I see no reason why not. Just to make sure, I decided to test. I ran a search on all human proteins (using the UniProt flat file) for all possible dipeptide combinations of the 20 standard amino acids (selenocysteine is also present in humans but only in 22--or so, depending on how you count them--proteins, so I wouldn't expect all possible sec-containing ...


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Just look at NCBI , EMBL and DDJB tools. These three are premier and global database centres. Their tools are self explanatory. You can calculate lot of things from these sequences. Besides these there are many in house tools for calculating specific information from sequences from many bioinformatics research labs across the world.


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Using a helical wheel projection you can make predictions of regions that are likely to form, or adopt, amphipathic helices. These are alpha-helices where one face, or side, of the helix is largely polar while the opposite, side, or face, of the helix is largely non-polar. Also, based on known X-Ray crystal structures, there are some residues that are ...


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I write this as an answer instead of a comment because I don't have the reputation to do otherwise (frustrating!) even to edit my answer-which-is-now-a-comment A weak vinegar solution (maybe 1:1 ratio water and vinegar) will solve your problem and will not stink up your home. Vinegar smell evaporates very quickly and are great for areas you can't reach ...


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Galvinoxyl is a free radical, which means it has an unpaired electron that can be detected with EPR. Antioxidants reduce the radical, which is then not detectable in the EPR anymore as it doesn't have an unpaired electron. What you need the EPR for in the assay is to determine how much of the galvinoxyl is still a radical. Paramagnetic molecules like ...


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Take a look on reaction catalyzed by dihydrolipoyl dehydrogenase. It acts upon $NAD^+$ according to following equation: $NAD^+ + FADH_2\rightarrow NADH+H^++FAD$ Same way you can write other reactions, e.g. by pyruvate dehydrogenase: $Pyruvate+TDP\rightarrow CO_2+TDP-Hydroxyethyl$


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Texts usually have a verbal explanation of these kind of diagrams, so look in the text where it references Figure 17.5 and read the section before and section after. That being said, if you start at the top with pyruvate, it enters the cycle where the curved circles touch on pyruvate dehydrogenase, which catalyzes its decarboxylation. That product then ...


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Homeothermic multicellular organisms have special tissues that burn resources to warm up (usually this involves breaking the electron-transporting chain at the final stages of respiration to transform all chemical energy into thermal energy). And they have special tissues (fat) and enough body mass (this is more about the volume/area ratio) to keep this ...


4

This is difficult to answer exactly since the thermodynamics of cellular metabolism are not well understood. These are spontaneous reactions, so there is certainly a loss of Gibbs' energy $\Delta G < 0$; this energy corresponds to your "energy" term on the product side of the reactions. For the anaerobic case (glycolysis) a balanced reaction formula is ...


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In biology, anaerobic respiration is a way for an organism to produce usable energy, in the form of adenosine triphosphate, or ATP, without the involvement of oxygen; it is respiration without oxygen. This process is mainly used by prokayotic organisms (bacteria) that live in environments devoid of oxygen. Although oxygen is not used, the process is still ...


3

From the derivation of Michaelis-Menten kinetics you can see that: $$K_m=\frac{k_f + k_{cat}}{k_r}$$ Where $k_f$ and $k_r$ are binding and unbinding rate constants (for Enzyme-Substrate binding), respectively, and $k_{cat}$ is the turnover number. This is for the Quasi-Steady-State approximation (QSSA). For the equilibrium approximation: ...


2

Basically, they engineered a vector which, when transfected to E. coli, produces transcripts of -and thus proteins to- a fusion gene which produces these transmembrane α helices conjugated to the staphylococcal nuclease. In other words, the E. coli are just factories for producing proteins: Expression, Extraction, and Purification of SN/GpA - For high ...


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Any one Plasma Cell that is producing antibody is making one kind of Heavy Chain and one Light Chain. In an IgG, there are two heavy chains each associated with a light chain. Together, a heavy and light chain have one epitope binding region - so in toto, an IgG is multivalent because each heavy chain : light pair can bind a single epitope for a total of ...


1

Someone has thought this was a very good question and performed an MD simulation on spontaneous bilayer assembly. There, lipids start in random orientations. The ordered bilayers we know and love spontaneously assemble in under 100ns. So if the lipids were jumbled up (or even reversed), the would probably reform fairly quickly. I wouldn't imagine that it ...


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Detection of and movement according to a gradient of a chemical species is a strategy that single cells use to track a target across space. There are very many strategies of movement depending on the cell and its environment, but a common problem that while cells can sense the concentration of chemicals, they cannot sense its gradient (the direction in which ...


1

The short answer is NO. A shadow is strictly due to the blocking of sunlight, so the shadow of 2 equally non-transparent (i.e., same density of leaves, both have similar trunk diameter, etc.) trees on the same hillside in the same weather conditions would not have different temperature shadows. A plant's metabolism can and will affect the temperature ...



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