Synthesis of Novel β-Lactams from Phenothiazin-10-ylacetic Acid

2018 ◽  
Vol 55 (5) ◽  
pp. 1085-1091 ◽  
Author(s):  
Zahra Omidvari ◽  
Maaroof Zarei
Keyword(s):  
Ylacetic Acid

Effect of cambial dormancy state on the transport of [1-14C]indol-3-ylacetic acid in Abies balsamea shoots

1981 ◽  
Vol 59 (3) ◽  
pp. 342-348 ◽  
Author(s):  
C. H. A. Little
Keyword(s):  
Abies Balsamea ◽  
Cambial Activity ◽  
Controlled Environment ◽  
Long Distance ◽  
Dormant Period ◽  
Cambial Zone ◽  
Time Required ◽  
Ylacetic Acid ◽  
Exogenous Iaa

Dormant attached or detached shoots of balsam fir were naturally or artificially chilled to induce different states along the rest–quiescence continuum. At the end of the chilling pretreatment, the shoots either were left intact or were debudded and treated with indol-3-ylacetic acid (IAA). The shoots were placed under controlled-environment conditions favorable for growth, and at intervals thereafter, a pulse of [1-14C]IAA was applied to the shoot apex. Measured at the end of the chilling pretreatment, [14C]IAA velocity and flux decreased with increasing duration of chilling (i.e., as rest graded into quiescence). The time required to commence cambial growth and to attain maximum rates of cambial activity and [14C]IAA transport also decreased as rest changed to quiescence. Transport in actively growing shoots exceeded that in quiescent shoots, but was similar to that in resting shoots. The [14C]IAA pulse moved basipetally as unchanged IAA, was blocked by a bark + cambium girdle, and was inhibited by abscisic acid and long-term application of exogenous IAA. The results indicate that: (1) the long-distance, cambium-located, IAA transport system demonstrated in dicotyledonous species also operates in conifers, (2) during the dormant period changes occur in [14C]IAA transport and in the cambial response to exogenous IAA, (3) the change in [14C]IAA transport is the result of change in the transporting capability of cells in the cambial zone, and (4) the change in [14C]IAA transport is not the cause of the differential response of quiescent and resting cambia to exogenous IAA.

scholarly journals Influence of counterions on the conformation of conjugated polyelectrolytes: the case of poly(thiophen-3-ylacetic acid)

2016 ◽  
Vol 18 (36) ◽  
pp. 25036-25047 ◽  
Author(s):  
Gregor Hostnik ◽  
Matjaž Bončina ◽  
Caterina Dolce ◽  
Guillaume Mériguet ◽  
Anne-Laure Rollet ◽  
...  
Keyword(s):  
Conformational Change ◽  
Conjugated Polyelectrolytes ◽  
Conjugated Polyelectrolyte ◽  
Ylacetic Acid

Binding of large hydrophobic counterions to poly(thiophen-3-ylacetate) provokes the conformational change of this conjugated polyelectrolyte.

ChemInform Abstract: ERGOT ALKALOIDS. LI. ESTERS OF D-6-METHYL-8-ERGOLIN-1-YLACETIC ACID AND THEIR R 2-HALO DERIVATIVES

1977 ◽  
Vol 8 (28) ◽  
pp. no-no
Author(s):  
M. BERAN ◽  
J. KREPELKA ◽  
K. REZABEK ◽  
M. SEDA ◽  
M. SEMONSKY
Keyword(s):  
Ergot Alkaloids ◽  
Ylacetic Acid

scholarly journals Identification of a 23 kDa protein from maize photoaffinity-labelled with 5-azido-[7-3H]indol-3-ylacetic acid

1995 ◽  
Vol 305 (3) ◽  
pp. 853-857 ◽  
Author(s):  
J Feldwisch ◽  
R Zettl ◽  
N Campos ◽  
K Palme
Keyword(s):  
Manganese Superoxide Dismutase ◽  
Reversed Phase ◽  
Amino Acid Sequences ◽  
Size Exclusion ◽  
Dichlorophenoxyacetic Acid ◽  
Photoaffinity Labelling ◽  
Manganese Superoxide ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Triton X ◽  
Ylacetic Acid

A 23 kDa protein (p23) was identified in microsomal extracts from maize coleoptiles by photoaffinity labelling with 5-azido-[7-3H]indol-3-ylacetic acid ([3H]N3IAA). Labelling of p23 was blocked by unlabelled IAA, N3IAA, indol-3-ylbutyric acid and indol-3-yl-lactate. In addition, labelling was efficiently decreased by tryptophan, as well as by the scavenger p-aminobenzoic acid. Labelling was, however, not affected by synthetic auxins such as 1-naphthylacetic acid or 2,4-dichlorophenoxyacetic acid. Competition data suggest that the label was probably bound via the indole ring, and hence labelling was not specific for auxins. The 23 kDa protein was solubilized from crude microsomes by extraction with Triton X-100 and purified to homogeneity by ion-exchange, size-exclusion and reversed-phase chromatography. After electroblotting, the amino acid sequences of the p23 N-terminus as well as the several tryptic peptides were obtained. Database comparisons revealed sequence identity with a maize manganese superoxide dismutase. We conclude that photoaffinity labelling of p23 was pseudo-affinity, and therefore the binding site for IAA is not specific.

scholarly journals Hormonal regulation of phosphatidylcholine synthesis in plants. The inhibition of cytidylyltransferase activity by indol-3-ylacetic acid

1983 ◽  
Vol 216 (3) ◽  
pp. 627-631 ◽  
Author(s):  
M J Price-Jones ◽  
J L Harwood
Keyword(s):  
Hormonal Regulation ◽  
Acid Treatment ◽  
Stem Elongation ◽  
Hormone Treatment ◽  
Pisum Sativum L ◽  
Endogenous Level ◽  
Choline Phosphotransferase ◽  
Ylacetic Acid ◽  
Phosphatidylcholine Synthesis

Indol-3-ylacetic acid stimulated stem elongation within 1 h of treatment of Pisum sativum L. cv. Feltham First stem sections. This elongation was accompanied by an increase in the endogenous level of phosphocholine and a decrease in that of CDP-choline. Measurements in vitro of the CDP-base pathway enzymes showed an increase in choline phosphotransferase and a decrease in cytidylyltransferase activity on hormone treatment. These results indicate that the decrease in phosphatidylcholine labelling from [14C]choline that is observed on indol-3-ylacetic acid treatment of pea stem sections is caused by the decrease in cytidylyltransferase activity.

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