Since the circulating thyroid hormones are the amino acids thyroxine and tri-iodothyronine ( cf. Section C ), it is clear that some mechanism must exist in the thyroid gland for their release from proteins before secretion.

Since 2001, 40 non-natural amino acids have been added into protein by creating a unique codon ( recoding ) and a corresponding transfer-RNA: aminoacyl – tRNA-synthetase pair to encode it with diverse physicochemical and biological properties in order to be used as a tool to exploring protein structure and function or to create novel or enhanced proteins.

Since phosphorus is contained in DNA but not amino acids, radioactive phosphorus-32 was used to label the DNA contained in the T2 phage.

Since they are translated, the amino acid residues involved are restricted to those utilized by the ribosome.

Since 2004, it has been marketed as a healthful drink ; its manufacturers claim it contains high concentrations of amino acids.

Since this amino acid is normally the cleavage site for aPC, the mutation prevents efficient inactivation of factor V.

Since muscles also extensively utilize amino acids when functioning within aerobic limits, meals should include adequate protein on top of carbohydrates.

Since the start codon of the genetic code codes for the amino acid methionine, most protein sequences start with a methionine ( or, in bacteria, mitochondria and chloroplasts, the modified version N-formylmethionine, fMet ).

Since many of the same neurotransmitters are found in the ENS as the brain, it follows that myenteric neurons can express receptors for both peptide and non-peptide ( amines, amino acids, purines ) neurotransmitters.

Since rice protein is low in the amino acid lysine, it is often combined with pea protein powder to achieve a superior amino acid profile.

Since A-U-U also codes for isoleucine, position 507's amino acid is unchanged, and the mutation's net effect is equivalent to a deletion (" Δ ") of the sequence resulting in the codon for phenylalanine (" F ") at position 508.

Since pH is defined as the negative logarithm of the concentration of hydronium ions, acids thus have pHs of less than 7.

Since Lavoisier's knowledge of strong acids was mainly restricted to oxoacids, such as ( nitric acid ) and ( sulphuric acid ), which tend to contain central atoms in high oxidation states surrounded by oxygen, and since he was not aware of the true composition of the hydrohalic acids ( HF, HCl, HBr, and HI ), he defined acids in terms of their containing oxygen, which in fact he named from Greek words meaning " acid-former " ( from the Greek οξυς ( oxys ) meaning " acid " or " sharp " and γεινομαι ( geinomai ) meaning " engender ").

Since honey contains electrolytes, in the form of acids and minerals, it exhibits varying degrees of electrical conductivity.

Since the system is closely related to the machinery for building fatty acids and polyketides, hybrid compounds are often found.

Since that success, over 73761 X-ray crystal structures of proteins, nucleic acids and other biological molecules have been determined.

Since biological fatty acids can be of different lengths, the last position is labelled as a " ω ", the last letter in the Greek alphabet.

Since the physiological properties of unsaturated fatty acids largely depend on the position of the first unsaturation relative to the end position and not the carboxylate, the position is signified by ( ω minus n ).

Since it acts as a neutralizing agent, it can be used to absorb odors that are caused by strong acids.

Since silage goes through a fermentation process, energy is used by fermentative bacteria to produce volatile fatty acids ( VFAs ), such as acetic, propionic, lactic, and butyric, which preserve the forage.

Since the Europe outbreak of ' mad cow disease ' or ( bovine spongiform encephalopathy ) in 2000, tallow is replaced for many uses by vegetable oleic fatty acids, such as palm kernel and coconut oils.

Since bile acids are biosynthesized from cholesterol, disruption of bile acid reabsorption will decrease cholesterol levels, in particular, low-density lipoprotein ( commonly known as " bad cholesterol ").

Since the key step in the degradation of fatty acids with double bonds at even-numbered carbon positions also produces 3-trans-enoyl-CoA in mammals and yeasts, enoyl-CoA isomerase is technically required for their metabolism as well.

Since ribosomes are specific to L-amino acids, D-peptides rarely occur naturally in organisms and are not easily digested or degraded.

Since Chinook rely on fat reserves for energy upon entering fresh water, commercial fish caught here are highly prized for their unusually high levels of heart-healthy omega-3 fatty acids.

Since enophiles are electron-deficient, it was reasoned that their complexation with Lewis acids should accelerate the ene reaction, as it occurred for the reaction shown in Figure 8.

Since there is an often immediate increased minor skin sensitivity after microdermabrasion, irritating products like glycolic acids or fragranced creams and lotions are typically avoided right after the procedure.

Since the hazards of poor communication are so great, p can be justified as a habitable site only on the basis of unusual productivity such as is made available by a waterfall for milling purposes, a mine, or a sugar maple camp.

Since the slogans have little application to reality and are sanctimonious to boot, the applause is faint even in areas of the world where we should expect to find the greatest affection for free government.

Since we can neither undo nor redo the past, we are limited to the events of today and tomorrow.

Since the recognition of Israel as a nation state, claims are made in many cases which identify the claimant as a member of the new body politic.

Since accurate base maps are necessary for any planning program, the first step taken by the planning division to implement the long-range state plan has been to prepare two series of base maps -- one at a scale of 1 inch to a mile, and the second a series of 26 sheets at a scale of 1 inch to 2000 feet, covering the entire state.

Since conventional methods are insensitive at the low frequencies of these molecular transitions, the paramagnetic resonance method is being used instead.

Since broadcast frequencies are very limited in number, these objectives are to some extent inconsistent in that not all of them can be fully realized, and to the extent that each is realized, there is a corresponding reduction of the possibilities for fullest achievement of the others.

Since the provision of skywave service requires adequate freedom from interference, only class 1, stations are capable of rendering skywave service.

Since the sides are also covered up to the spray rails, they are also rough-sanded in that area.

Since fly cutters are one sided and not balanced, they should be used at the slowest speed available, and fed very slowly to avoid binding.

Since there are almost no schools in the country offering graduate work in interior design this rule cannot at present be observed.

Since charges are relatively the same, reserving a car before you leave for Europe will assure you of having one on tap when you want it.

Since practical washing procedures are both lengthy and expensive, a number of laboratory tests have been developed for the numerical evaluation of detergents.

Since emotional reactions in the higher vertebrates depend on individual experience and are aroused in man, in addition, by complex symbols, one would expect that the hypothalamus could be excited from the cortex.

Since Af are distinct prime polynomials, the polynomials Af are relatively prime ( Theorem 8, Chapter 4 ).

Since D and D' are both diagonalizable and they commute, they are simultaneously diagonalizable, and Af is diagonalizable.

Since N and N' are both nilpotent and they commute, the operator Af is nilpotent ; ;

Since Af are linearly independent functions and the exponential function has no zeros, these R functions Af, form a basis for the space of solutions.

Since the choice is by lot each week, the outcomes of different trials are independent.

Since two curves of symbol Af on Q intersect in Af points, it follows that there are Af lines of Af which are tangent to Aj.