scholarly journals Isolation and Characterization of Mutants of Arabidopsis thaliana with Increased Resistance to Growth Inhibition by Indoleacetic Acid-Amino Acid Conjugates

1996 ◽  
Vol 112 (2) ◽  
pp. 735-745 ◽  
Author(s):  
J. J. Campanella ◽  
J. Ludwig-Mueller ◽  
C. D. Town
Keyword(s):  
Arabidopsis Thaliana ◽  
Amino Acid ◽  
Growth Inhibition ◽  
Indoleacetic Acid ◽  
Amino Acid Conjugates ◽  
Isolation And Characterization

scholarly journals α-Crystallin. The isolation and characterization of distinct macromolecular fractions

1971 ◽  
Vol 124 (2) ◽  
pp. 337-343 ◽  
Author(s):  
Abraham Spector ◽  
Lu-Ku Li ◽  
Robert C. Augusteyn ◽  
Arthur Schneider ◽  
Thomas Freund
Keyword(s):  
Molecular Weight ◽  
Amino Acid ◽  
Gel Filtration ◽  
Deae Cellulose ◽  
Chemical Difference ◽  
Molecular Weights ◽  
Isolation And Characterization ◽  
Different Populations ◽  
Molecular Weight Fractions

α-Crystallin was isolated from calf lens periphery by chromatography on DEAE-cellulose and gel filtration. Three distinct populations of macromolecules have been isolated with molecular weights in the ranges approx. 6×105−9×105, 0.9×106−4×106and greater than 10×106. The concentration of macromolecules at the molecular-weight limits of a population are very low. The members of the different populations do not appear to be in equilibrium with each other. Further, in those molecular-weight fractions investigated, no equilibrium between members of the same population was observed. The population of lowest molecular weight comprises 65–75% of the total material. The amino acid and subunit composition of the different-sized fractions appear very similar, if not identical. The only chemical difference observed between the fractions is the presence of significant amounts of sugar in the higher-molecular-weight fractions. Subunit molecular weights of approx. 19.5×103and 22.5×103were observed for all α-crystallin fractions.

Isolation and characterization of a new amino acid, 5-chloro-D-tryptophan from antibiotic longicatenamycin

1974 ◽  
Vol 15 (35) ◽  
pp. 3085-3086 ◽  
Author(s):  
Tetsuo Shiba ◽  
Yasuo Mukunoki ◽  
Hitoshi Akiyama
Keyword(s):  
Amino Acid ◽  
Isolation And Characterization

scholarly journals Single amino acid exchanges in separate domains of the Drosophila serendipity delta zinc finger protein cause embryonic and sex biased lethality.

Genetics ◽  
1992 ◽  
Vol 131 (4) ◽  
pp. 905-916 ◽  
Author(s):  
M Crozatier ◽  
K Kongsuwan ◽  
P Ferrer ◽  
J R Merriam ◽  
J A Lengyel ◽  
...  
Keyword(s):  
Amino Acid ◽  
Dna Binding ◽  
Zinc Finger ◽  
Zinc Finger Protein ◽  
Essential Gene ◽  
Larval Instar ◽  
Single Amino Acid ◽  
Isolation And Characterization ◽  
Finger Protein

Abstract The Drosophila serendipity (sry) delta (delta) zinc finger protein is a sequence-specific DNA binding protein, maternally inherited by the embryo and present in nuclei of transcriptionally active cells throughout fly development. We report here the isolation and characterization of four ethyl methanesulfate-induced zygotic lethal mutations of different strengths in the sry delta gene. For the stronger allele, all of the lethality occurs during late embryogenesis or the first larval instar. In the cases of the three weaker alleles, most of the lethality occurs during pupation; moreover, those adult escapers that emerge are sterile males lacking partially or completely in spermatozoa bundles. Genetic analysis of sry delta thus indicates that it is an essential gene, whose continued expression throughout the life cycle, notably during embryogenesis and pupal stage, is required for viability. Phenotypic analysis of sry delta hemizygote escaper males further suggests that sry delta may be involved in regulation of two different sets of genes: genes required for viability and genes involved in gonadal development. All four sry delta alleles are fully rescued by a wild-type copy of sry delta, but not by an additional copy of the sry beta gene, reinforcing the view that, although structurally related, these two genes exert distinct functions. Molecular characterization of the four sry delta mutations revealed that these mutations correspond to single amino acid replacements in the sry delta protein. Three of these replacements map to the same (third out of seven) zinc finger in the carboxy-terminal DNA binding domain; interestingly, none affects the zinc finger consensus residues. The fourth mutation is located in the NH2-proximal part of the protein, in a domain proposed to be involved in specific protein-protein interactions.

Isolation and characterization of racemase from Ensifer sp. 23-3 that acts on α-aminolactams and α-amino acid amides

2017 ◽  
Vol 44 (11) ◽  
pp. 1503-1510
Author(s):  
Daisuke Matsui ◽  
Ken-ichi Fuhshuku ◽  
Shingo Nagamori ◽  
Momoko Takata ◽  
Yasuhisa Asano
Keyword(s):  
Amino Acid ◽  
Isolation And Characterization
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