and glutamic acid levels also increased by a factor of 2.40 and 2.78 relative to the control oysters.
It has been shown previously (25) that glycopeptides containing complex glycans do not produce detectable ions under the conditions used here for mass spectrometry, whereas the same peptides in which the asparagine is not glycosylated or in which the asparagine has been converted to aspartic acid
by enzymatic deglycosylation can be detected (Fig.
In addition, because the levels of aspartame used are so low, food sweetened with aspartame contributes a relatively small amount of the aspartic acid
, phenylalanine or methanol consumed.
They found that under conditions that could have existed on primitive Earth, left-handed aspartic acid
crystals could have formed easily and on a large scale.
Even more intriguing, the researchers found that the addition of the left-handed version of aspartic acid
, an amino acid, created a step pattern in calcite crystals opposite to that seen with the addition of the right-handed version.
In non-essential amino acids (Figure 2), compared with the control group, plasma serine decreased (P=0.0036) in the SDPP and YE groups, whereas plasma aspartic acid
tended to decrease (P=0.079) in the YE group compared to the control and SDPP groups.
The researchers placed each of four fist-size calcite crystals in a 50-50 solution of right- and left-handed aspartic acid
, an amino acid.
Equal amounts of aspartic acid
and glutamic acid by weight were substituted for the graded amounts of threonine in the basal diet to maintain the isonitrogenous of the seven experimental diets.
3.lot 6 - aspartic acid
/ um f - f minimum 20 - maximum 200 f;
In the cancer study, researchers identified a key sequence of amino acids-arginine, glycine, and aspartic acid
, (the RGD motif)-that triggered the death of leukaemia cells by activating a protein called caspase-3.
A geochemist, Bada has been refining a technique for dating fossils on the basis of changes in their aspartic acid
. This amino acid can exist in either of two mirror-image forms.
The concentration (mg/g) of total amino acids and peptide amino acids in soybean small peptides Items Total amino Peptide amino acid content acid content Aspartic acid
90.91 89.06 Glutamic acid 196.10 189.48 Serine 46.60 46.06 Histidine 19.70 18.97 Glycine 32.60 32.09 Threonine 32.00 30.72 Arginine 62.00 60.85 Alanine 34.90 32.85 Tyrosine 27.60 26.19 Cystine 6.70 6.19 Valine 32.00 30.65 Methionine 12.50 11.45 Phenylalanine 38.20 35.49 Isoleucine 30.80 30.15 Leucine 61.10 55.77 Lysine 55.40 54.59 Proline 52.30 52.29 TAA (1) 831.41 802.85 (1) TAA = Total amino acids.