Highly chemoselective ligation of thiol- and amino-peptides on a bromomaleimide core

In the years since the publication of Atherton and Sheppard's volume, the technique of Fmoc solid-phase peptide synthesis has matured considerably and is now the standard approach for the routine production of peptides. The basic problems outstanding at the time of publication of this earlier work have now been, for the most part, solved. As a result, innovators in the field have focussed their efforts to develop methodologies and chemistry for the synthesis of more complex structures. The focus of this new volume is much broader, and covers not only the essential procedures for the production of linear peptides but also more advanced techniques for preparing cyclic, side-chain modified, phospho- and glycopeptides. Many other methods also deserving attention have been included: convergent peptide synthesis; peptide-protein conjugation; chemoselective ligation; and chemoselective purification. The difficult preparation of cysteine and methionine-containing peptides is also covered, as well as methods for overcoming aggregation during peptide chain assembly and a survey of available automated instrumentation.

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Chemoselective ligation assisted DNA walker for analysis of double targets

Colloids and Surfaces B Biointerfaces ◽

10.1016/j.colsurfb.2021.111620 ◽

2021 ◽

Vol 201 ◽

pp. 111620

Author(s):

Tianxiang Xue ◽

Longfei Tang ◽

Xiquan Yue ◽

Lili Niu ◽

Jinhui Peng ◽

...

Keyword(s):

Chemoselective Ligation ◽

Dna Walker ◽

Double Targets

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Synergy between a shallow root system with a DRO1 homologue and localized P application improves P uptake of lowland rice

Scientific Reports ◽

10.1038/s41598-021-89129-z ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Aung Zaw Oo ◽

Yasuhiro Tsujimoto ◽

Mana Mukai ◽

Tomohiro Nishigaki ◽

Toshiyuki Takai ◽

...

Keyword(s):

Root System ◽

Crop Production ◽

Soil Surface ◽

P Uptake ◽

Ore Deposits ◽

Root Surface Area ◽

Genetic Traits ◽

P Use Efficiency ◽

Use Efficiency ◽

P Application

AbstractImproved phosphorus (P) use efficiency for crop production is needed, given the depletion of phosphorus ore deposits, and increasing ecological concerns about its excessive use. Root system architecture (RSA) is important in efficiently capturing immobile P in soils, while agronomically, localized P application near the roots is a potential approach to address this issue. However, the interaction between genetic traits of RSA and localized P application has been little understood. Near-isogenic lines (NILs) and their parent of rice (qsor1-NIL, Dro1-NIL, and IR64, with shallow, deep, and intermediate root growth angles (RGA), respectively) were grown in flooded pots after placing P near the roots at transplanting (P-dipping). The experiment identified that the P-dipping created an available P hotspot at the plant base of the soil surface layer where the qsor1-NIL had the greatest root biomass and root surface area despite no genotyipic differences in total values, whereby the qsor1-NIL had significantly greater biomass and P uptake than the other genotypes in the P-dipping. The superior surface root development of qsor1-NIL could have facilitated P uptakes from the P hotspot, implying that P-use efficiency in crop production can be further increased by combining genetic traits of RSA and localized P application.

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Nanometer-Thick [(FPEA)2PbX4; X=I, Br] 2D Halide Perovskite Based Thin Films for Pollutant Detection and Nonconventional Photocatalytic Degradation

Materials Advances ◽

10.1039/d1ma00561h ◽

2021 ◽

Author(s):

Arindam Mondal ◽

Akash Lata ◽

Aarya Prabhakaran ◽

Satyajit Gupta

Keyword(s):

Thin Films ◽

Photocatalytic Degradation ◽

Three Dimensional ◽

Two Dimensional ◽

Reduced Dimensionality ◽

P Application ◽

Halide Perovskites ◽

Halide Perovskite ◽

Pollutant Detection

Application of three-dimensional (3D)-halide perovskites (HaP) in photocatalysis encourages the new exercise with two-dimensional (2D) HaP based thin-films for photocatalytic degradation of dye. The reduced dimensionality to 2D-HaPs, with a...

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Response of field peas to phosphate fertilization

Canadian Journal of Plant Science ◽

10.4141/p02-110 ◽

2003 ◽

Vol 83 (2) ◽

pp. 283-289 ◽

Cited By ~ 7

Author(s):

R. E. Karamanos ◽

N. A. Flore ◽

J. T. Harapiak

Keyword(s):

Uniform Design ◽

Monoammonium Phosphate ◽

Canadian Prairie ◽

Yield Increase ◽

Seed Moisture ◽

Field Peas ◽

Triple Super Phosphate ◽

Seed Placement ◽

P Application ◽

The Impact

Canadian Prairie Provinces in general, and Saskatchewan in particular are major producers of peas worldwide. Individual provincial criteria for P application are considerably different from each other. Further introduction of new pea varieties and the adoption of direct seeding practices prompted us to re-evaluate these criteria. To this end, two experiments with field peas (Pisum sativum L. var. Carneval) were carried out between 1994 and 1998 at nine different locations in Alberta. The first experiment was carried out in 1994 and consisted of three trials with six rates of P (0, 4.4, 8.7, 13, 17.5 and 21.8 kg P ha-1) in the form of monoammonium phosphate (MAP) (12-51-0). To eliminate the impact of varying N rates along with P, a series of 21 trials and a uniform design that included five rates of P (0, 6.5, 13, 19.5 and 26 kg ha-1) in the form of triple super phosphate (0-45-0) and two methods of placement (seed placement or side banding) were subsequently carried out. There was a significant response to P application at all 13 sites of both experiments that contained 10 or less mg of a Modified Kelowna (MK) extractable-P kg-1 of soil. Side banding resulted in significantly higher yield in only three trials. Maximum average yield increase of 645 kg seed ha-1 was obtained with application of 19.5 kg P ha-1; it was influenced by soil texture as the magnitude of response was greater on loamy (535 kg seed ha-1) than on clay loam soils (285 kg seed ha-1). There was no significant yield increase in the trials that contained greater than 10 mg MK-P kg-1 soil. Reduction in plant population was more frequent as a result of seed placement (nine cases with P < 0.1) than side banding in both experiments. The impact of P fertilization on seed moisture was not consistent. The ability to side band or to seed with an increased seed bed utilization may fulfil the need for application of greater rates of P than the ones currently recommended for prairie soils. Key words: Seed placement, side banding, triple super phosphate, monoammonium phosphate

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Synthesis and characterization of dicationic 4,4′-bipyridinium dichloride ordered mesoporous silica nanocomposite and its application in the preparation of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives

RSC Advances ◽

10.1039/c4ra17067a ◽

2015 ◽

Vol 5 (33) ◽

pp. 25816-25823 ◽

Cited By ~ 16

Author(s):

Aigin Bashti ◽

Ali Reza Kiasat ◽

Babak Mokhtari

Keyword(s):

Mesoporous Silica ◽

Synthesis And Characterization ◽

Ordered Mesoporous Silica ◽

One Pot ◽

Ordered Mesoporous ◽

Environmentally Safe ◽

P Application ◽

The One ◽

Solvent Free Synthesis

Application of SBA@BiPy2+ 2Cl− nanocomposite as a novel environmentally safe heterogeneous nanoreactor for the one-pot solvent-free synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives.

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Synthesis of antiparallel 4?-helix bundle TASP by chemoselective ligation

Letters in Peptide Science ◽

10.1007/bf00132757 ◽

1994 ◽

Vol 1 (1) ◽

pp. 9-16 ◽

Cited By ~ 18

Author(s):

Orig�ne Nyanguile ◽

Manfred Mutter ◽

Gabriele Tuchscherer

Keyword(s):

Chemoselective Ligation ◽

Helix Bundle

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Aligned Fe3O4 magnetic nanoparticle films by magneto-electrospray method

RSC Advances ◽

10.1039/c7ra07944c ◽

2017 ◽

Vol 7 (64) ◽

pp. 40124-40130 ◽

Cited By ~ 4

Author(s):

Christina W. Kartikowati ◽

Qing Li ◽

Shinji Horie ◽

Takashi Ogi ◽

Toru Iwaki ◽

...

Keyword(s):

Magnetic Field ◽

Magnetic Nanoparticle ◽

Film Deposition ◽

Nanoparticle Films ◽

P Application ◽

Fe3o4 Magnetic Nanoparticle

Application of magnetic field during film deposition by electrospray enhances the magnetic performances of the film. This enhancement increased as the diameter of the constituent nanoparticles increased.

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Spatial variability of soil phosphorus of a low productivity Brachiaria brizantha pasture

Scientia Agricola ◽

10.1590/s0103-90162003000300022 ◽

2003 ◽

Vol 60 (3) ◽

pp. 559-564 ◽

Cited By ~ 4

Author(s):

Edemar Joaquim Corazza ◽

Michel Brossard ◽

Takashi MuraokaI ◽

Maurício Antonio Coelho Filho

Keyword(s):

Spatial Variability ◽

Soil Phosphorus ◽

Organic Matter Content ◽

Fertilizer Application ◽

Matter Content ◽

Soil Samples ◽

Brachiaria Brizantha ◽

Soil P ◽

Forage Plants ◽

P Application

Studies on soil phosphorus (P) of low productivity cultivated pastures in Cerrado (Brazilian Savanna) areas and surveys on other possible problems related to P are scarce. The spatial variability of soil phosphorus content of a Rhodic Ferralsol was studied in a low productivity pasture of Brachiaria brizantha (BB) grown for 10 years, without fertilizer application, in an experimental area at Planaltina (GO), Brazil. Soil samplings were performed on a regular grid of 10 by 10 meters, with 98 sampling points before (between tussocks and under tussocks) and after the establishment of the experiment (after fertilizing). On the same grid, forage plants were collected and separated into fractions for N and P content analyses. Soil available phosphate was determined by the resin method (Pr) and complemented by the 32P isotopic exchange kinetics analysis. Descriptive statistical and geostatistical analyses were utilized to describe the spatial variability. The Pr content on soil samples under tussocks presented mean and median values 45% larger than in soil samples taken between tussocks. The higher variation is probably related to the greater concentration of BB roots, soil organic matter content and soil P recycled through the plants tussocks. The spatial variability of Pr in this soil was high especially after fertilizer application. This variable did not present spatial dependence for the regular 10 m sampling. The generated knowledge on P variability of soils under low productivity cultivated pastures revealed problems related to the sampling methodology traditionally utilized and to P application.

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Synergy Between a Shallow Root System With a DRO1 Homologue and Localized P Application Improves Rice P Uptake

10.21203/rs.3.rs-138072/v1 ◽

2021 ◽

Author(s):

Aung Zaw Oo ◽

YASUHIRO TSUJIMOTO ◽

Mana Mukai ◽

Tomohiro Nishigaki ◽

Toshiyuki Takai ◽

...

Keyword(s):

Root System ◽

Crop Production ◽

Soil Layer ◽

P Uptake ◽

Ore Deposits ◽

Root Surface Area ◽

Genetic Traits ◽

P Use Efficiency ◽

Use Efficiency ◽

P Application

Abstract Improved phosphorus (P) use efficiency for crop production is needed given the depleting phosphorus ore deposits and increasing ecological concerns about its excessive use. Root system architecture (RSA) is important in efficiently capturing immobile P in soils, while agronomically, localized P application near the roots is a potential approach to address this issue. However, the interaction between genetic traits of RSA and localized P application has been little understood. Near-isogenic lines (NILs) and their parent of rice (qsor1-NIL, Dro1-NIL, and IR64, with shallow, deep, and intermediate root growth angles (RGA), respectively) were grown in flooded pots after placing P near the roots at transplanting (P-dipping). The experiment identified that the P-dipping created an available P hotspot at the soil surface; the qsor1-NIL had the greatest root biomass and root surface area in the 0–3 cm soil layer despite no genotype differences in total values; the qsor1-NIL had significantly greater biomass and P uptake than the other genotypes in the P-dipping. The superior surface root development of qsor1-NIL could have facilitated P uptakes from the P hotspot, implying that P-use efficiency in crop production can be further increased by combining genetic traits of RSA and localized P application.

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