scholarly journals Low Temperature Adaptation Is Not the Opposite Process of High Temperature Adaptation in Terms of Changes in Amino Acid Composition

2015 ◽  
Vol 7 (12) ◽  
pp. 3426-3433 ◽  
Author(s):  
Ling-Ling Yang ◽  
Shu-Kun Tang ◽  
Ying Huang ◽  
Xiao-Yang Zhi
Keyword(s):  
High Temperature ◽  
Amino Acid ◽  
Low Temperature ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Temperature Adaptation ◽  
Opposite Process ◽  
Low Temperature Adaptation

scholarly journals Protein Content and Amino Acid Balance of Yams

1969 ◽  
Vol 57 (1) ◽  
pp. 78-83
Author(s):  
F. W. Martin ◽  
A. E. Thompson
Keyword(s):  
Amino Acids ◽  
High Temperature ◽  
Amino Acid ◽  
Amino Acid Composition ◽  
Protein Content ◽  
Acid Composition ◽  
Total Protein ◽  
Total Amino Acid ◽  
Amino Acid Contents ◽  
Amino Acid Balance

The total protein of 38 yam (Dioscorea) cultivars, as tested by Kjeldahl methods, and their amino acid composition, determined by high temperature hydrolysis and GLC chromatography, are reported. Species and varieties differed in total protein and total amino acid contents. Proteins of four species, but not D. alata, were somewhat low in lysine. Proteins of all species were deficient in sulphur-containing amino acids, methionine, and especially cystine. Varietal differences, however, suggest that cultivars can be selected with more balanced protein.

scholarly journals Comparative genomic analysis reveals a monophyletic cold adapted Arthrobacter cluster from polar and alpine regions

2019 ◽  
Author(s):  
Liang Shen ◽  
Yongqin Liu ◽  
Baiqing Xu ◽  
Ninglian Wang ◽  
Sten Anslan ◽  
...  
Keyword(s):  
Amino Acid ◽  
Low Temperature ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Genomic Analysis ◽  
Comparative Genomic ◽  
Cold Adapted ◽  
Monophyletic Cluster ◽  
Alpine Regions ◽  
Wide Range

AbstractDecrease in the frequency of arginine and increase in lysine are the trends that have been identified in the genomes of cold adapted bacteria. However, some cold adapted taxa show only limited or no detectable changes in the frequencies of amino acid composition. Here, we examined Arthrobacter spp. genomes from a wide range of environments on whether the genomic adaptations can be conclusively identified across genomes of taxa from polar and alpine regions. Phylogenetic analysis with a concatenated alignment of 119 orthologous proteins revealed a monophyletic clustering of seven polar and alpine isolated strains. Significant changes in amino acid composition related to cold adaptation were exclusive to seven of the twenty-nine strains from polar and alpine regions. Analysis of significant indicator genes and cold shock genes also revealed that clear differences could only be detected in the same seven strains. These unique characteristics may result from a vast exchange of genome content at the node leading to the monophyletic cold adapted Arthrobacter cluster predicted by the birth-and-death model. We then experimentally validated that strains with significant changes in amino acid composition have a better capacity to grow at low temperature than the mesophilic strains.ImportanceAcquisition of novel traits through horizontal gene transfer at the early divergence of the monophyletic cluster may accelerate their adaptation to low temperature. Our study reached a clear relationship between adaptation to cold and genomic features and would advanced in understanding the ambiguous results produced by the previous studies on genomic adaption to cold temperature.

Effect of maternal diet on the amino acid composition of human uterine fluid

2014 ◽  
Author(s):  
Alexandra Jayne Kermack ◽  
Ying Cheong ◽  
Nick Brook ◽  
Nick Macklon ◽  
Franchesca D Houghton
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Maternal Diet ◽  
Uterine Fluid
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