Catalysis-chemistry

Li, Yulei published the artcileChemical synthesis of a full-Length G-protein-coupled receptor ¦Â₂-adrenergic receptor with defined modification patterns at the C-terminus, Category: catalysis-chemistry, the publication is Journal of the American Chemical Society (2021), 143(42), 17566-17576, database is CAplus and MEDLINE.

The ¦Â₂-adrenergic receptor (¦Â₂AR) is a G-protein-coupled receptor (GPCR) that responds to the hormone adrenaline and is an important drug target in the context of respiratory diseases, including asthma. ¦Â₂AR Function can be regulated by post-translational modifications such as phosphorylation and ubiquitination at the C-terminus, but access to the full-length ¦Â₂AR with well-defined and homogeneous modification patterns critical for biochem. and biophys. studies remains challenging. Here, we report a practical synthesis of differentially modified, full-length ¦Â₂AR based on a combined native chem. ligation (NCL) and sortase ligation strategy. An array of homogeneous samples of full-length ¦Â₂ARs with distinct modification patterns, including a full-length ¦Â₂AR bearing both monoubiquitination and octaphosphorylation modifications, were successfully prepared for the first time. Using these homogeneously modified full-length ¦Â₂AR receptors, we found that different phosphorylation patterns mediate different interactions with ¦Â-arrestin1 as reflected in different agonist binding affinities. Our experiments also indicated that ubiquitination can further modulate interactions between ¦Â₂AR and ¦Â-arrestin1. Access to full-length ¦Â₂AR with well-defined and homogeneous modification patterns at the C-terminus opens a door to further in-depth mechanistic studies into the structure and dynamics of ¦Â₂AR complexes with downstream transducer proteins, including G proteins, arrestins, and GPCR kinases.

Journal of the American Chemical Society published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Category: catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Slotta, K. H. published the artcile¦Â-Phenylethylamines. I. Mescaline and mescaline-like substances, Name: (E)-3-(2,4-Dimethoxyphenyl)acrylic acid, the publication is Berichte der Deutschen Chemischen Gesellschaft [Abteilung] B: Abhandlungen (1930), 3029-44, database is CAplus.

In addition to the sympathomimetic action which is a general property of ¦Â-aryl-ethylamines and -ethanolamines, mescaline, 3,4,5-(MeO)₃C₆H₂CH₂CH₂NH₂ (I), possesses a peculiar narcotic action. For a pharmacol. and clinical investigation of I and a study of its relationships to other sympathomimetic drugs it was necessary to find a way by which it would be possible to prepare several hundred g. of I. The only method by which it had hitherto been synthesized (RCHO (+ MeNO₂) ¡ú RCH:CHNO₂ (+ H₂) ¡ú RCH₂CH:NOH (+ H₂) ¡ú RCH₂CH₂NH₂) serves to establish its structure rather than to prepare the compound The new method should also make it possible to prepare more easily the isomers of I, as well as mono- and dimethoxyphenylethylamines, in order to determine the influence of the position and number of the MeO groups on the physiol. action of the alkoxyphenylethylamines. An examination of 4 other possible methods of preparation indicated that the only feasible one was that based on the scheme RCHO (+ CH₂(CO₂H)₂) ¡ú RCH:CHCO₂H (+ H₂) ¡ú RCH₂CH₂CO₂H (+ SOCl₂) ¡ú RCH₂CH₂COCl (+ NH₃) ¡ú RCH₂CH₂CONH₂ (+ KOBr) ¡ú RCH₂CH₂NH₂. The m- and p-mono- and the 2,3-, 3,4-and 3,5-di-MeO compounds have already been prepared by this method but in all attempts to prepare I it had hitherto been impossible to carry out the last step. S. and H. have now found, however, that under certain conditions not only I but also its isomers can readily be obtained in very satisfactory yield by using concentrated NaOBr for the Hofmann degradation. The condensation of the aldehydes with CH₂(CO₂H)₂ was effected in 2-3 parts C₅H₅N (distilled over KOH) and 1-5 cc. piperidine per mol. of aldehyde; com. CH₂(CO₂H)₂ can be used directly and a 20% excess. is quite sufficient. The splitting off of CO₂ from the primary di-CO₂H acid is almost quant. on the H₂O bath and only in a few cases was it necessary to boil the C₅H₅N solution a short while. The yield of RCH:CHCO₂H was in general above 80%. The reduction of the unsaturated acid was in all cases easily carried out with an excess of Na-Hg, usually on the H₂O bath; a higher temperature was required only where the unsaturated acid was difficultly soluble in NaOH, and a toning down of the alkalinity with AcOH was necessary only with 3,4,5-(MeO)₃C₆H₂CH:CHCO₂H. The chlorides RCH₂CH₂COCl were obtained by heating the acids in CHCl₃ 4-5 hrs. on the H₂O bath with twice the calculated amount of SOCl₂; they were not isolated but the reaction mixtures were concentrated to about 0.5 volume in vacuo and added, with cooling, to concentrated NH₄OH containing about 10% NaOH (only 2,4-(MeO)₂C₆H₃CH₂CH₂CONH₂ could not be obtained in this way). For the successful degradation of the amides to the amines, it is necessary to have a very pure amide. The statement in the literature that NaOCl gives better yields than NaOBr was confirmed for only some of the amides (the best results were obtained with a solution prepared by passing 5.5 g. Cl into 10 g. NaOH in 100 cc. H₂O). The behavior of the amides in the Hofmann degradation depends greatly on the position and nature of the nucleus substituents. The products are best worked up by distillation in vacuo. The physiol. action of the amines prepared will be described later by Hesse and Lange. o-MeOC₆H₄CH:CHCO₂H, m. 183¡ã (80% from o-MeOC₆H₄CHO), gave 99% MeOC₆H₄CH₂CO₂H, m. 92¡ã (literature, 85-6¡ã); the amide, m. 111¡ã (86.3% yield), gave with NaOCl 35.2% o-MeOC₆H₄CH₂CH₂NH₂, b. 115-20¡ã in the vacuum of a H₂O pump (HCl salt, m. 143¡ã; sulfate, m. 230¡ã). m-HOC₆H₄CHO, m. 106¡ã (69% by diazotization of m-H₂NC₆H₄CHO, prepared from the NO₂ compound with FeSO₄), yielded 80% of the MeOC₆H₄CHO which gave 69% MeOC₆H₄CH: CHCO₂H, m. 177¡ã; the saturated acid, m. 50¡ã (80% yield) gave 27.5% of the amide, b₁₂ 222-5¡ã, m. 56¡ã, which yielded with NaOBr 61% (with NaOCl 19%) of m-MeOC₆H₄CH₂CH₂NH₂, b₁₂ 128¡ã. p-MeOC₆H₄CH₂CH₂NH₂. HCl, m. 210¡ã, was obtained in 43% yield with NaOCl from the amide which itself was obtained in 75% yield through the MeOC₆H₄CH:CHCO₂H (92.5%) and the saturated acid (81%). p-iso-PrC₆H₄CH:CHCO₂H, m. 165¡ã (64%); saturated acid, m. 73¡ã (98%); amide, m. 142¡ã (81.5%), boils explosively with NaOCl at 80¡ã and at 65¡ã gives only a little a ¦Â-(p-isopropylphenyl)ethylamine, b. 150¡ã in the vacuum of a H₂O pump (HCl salt, m. 270¡ã). Vanillin Et ether, m. 63¡ã (85% from vanillin and alk. Et₂SO₄), gave 89% 3-methoxy-4-ethoxycinnamic acid, m. 205¡ã; propionic acid, m. 130¡ã (79%); amide, m. 124¡ã (33.9%), gave with NaOCl the ethylamine, b_15-8 165¡ã (HCl salt, m. 120¡ã). m-C₆H₄(OMe)₂, b₁₂: 117-8¡ã (90% from m-C₆H₄(OH)₂ with alk. Me₂SO₄), gave in Et₂O with HCN, HCl and ZnCl₂: 76% of 2,4-(MeO)₂C₆H₃CHO; 2,4-(MeO)₂C₆H₃CH:CHCO₂H, m. 138¡ã (99%); propionic acid, m. 105¡ã (94%); attempts to prepare the amide through the chloride gave a red-brown oil which decomposed on distillation, in vacuo. 3,4-CH₂O₂C₆H₃CH:CHCO₂H, m. 232¡ã (94%); propionic acid (92%); amide (83.5%), gave with NaOCl 37% of the ethylamine-HCl, m. 206¡ã, 1,2,3-C₆H₃(OMe)₃, b₁₂ 140¡ã (65% with alk. Me₂SO₄), gives with HCN and AlCl₃ in C₆H₆ 53% 2,3,4-(MeO)₃C₆H₂CHO, b₁₂ 170¡ã. 2,3,4-Trimethoxycinnamic acid, m. 172¡ã (94%); propionic acid, m. 76¡ã (65%); amide, m. 171¡ã (63.5%), gives with NaOBr 71.5% ¦Â-(2,3,4-trimethoxyphenyl)ethylamine, b₁₂ 167¡ã, quickly forms the carbonate in the air. 3,4,5-(MeO)₃C₆H₂CO₂H (86% from (HO)₃C₆H₂CO₂H with alk. Me₂SO₄); chloride (86% with PCl₅) in boiling xylene (distilled from Na) with Pd-BaSO₄ and H gave in 30 hrs. 80% 3,4,5-(MeO)₃C₆H₂-CHO, m. 74¡ã; cinnamic acid, m. 124¡ã (80%); ¦Â-(3,4,5-trimethoxyphenyl) propionic acid, m. 98¡ã (88% yield); amide, m. 106¡ã (60%), gave with NaOBr (52g. Br and 150g. NaOH in 375 cc. H₂O) 66% I, b₁₂, 180¡ã (HCl salt, m. 181¡ã). p-BrC₆H₄OMe, b₁₂ 120¡ã (82.9% from PhOMe in AcOH with Br vapors) gave in Et₂O with Mg (activated with I) and ethylene oxide and subsequent decomposition with HCl 31.1% of p-MeOC₆H₄CH₂-CH₂OH, b. 145-60¡ã in the vacuum of the H₂O pump, and this with boiling 47.5% HBr yielded 45% of the bromide, b_12.6 140-50¡ã, from which, when refluxed with a mixture of C₆H₄(CO)₂NH and 0.5 mol. K₂CO₃ until no liquid condensed in the condenser tube, then treated in alc. with N₂H₄.H₂O and finally with HCl gas, was obtained 11.8% p-MeOC₆H₄CH₂CH₂NH₂.HCl, m. 211¡ã. 4-Bromoveratrole, p-BrC₆H₄OH, p-BrC₆-H₄OAc, o- and p-BrC₆H₄NO₂ and o-C₆H₄Cl₂ could not be made to react with Mg in either Et₂O, (iso-Am)₂O or otherwise.

Berichte der Deutschen Chemischen Gesellschaft [Abteilung] B: Abhandlungen published new progress about 16909-09-4. 16909-09-4 belongs to catalysis-chemistry, auxiliary class Alkenyl,Carboxylic acid,Benzene,Ether, name is (E)-3-(2,4-Dimethoxyphenyl)acrylic acid, and the molecular formula is C7H13NO2, Name: (E)-3-(2,4-Dimethoxyphenyl)acrylic acid.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Musdal, Yaman published the artcileFDA-approved drugs and other compounds tested as inhibitors of human glutathione transferase P1-1, Application In Synthesis of 38260-01-4, the publication is Chemico-Biological Interactions (2013), 205(1), 53-62, database is CAplus and MEDLINE.

Glutathione transferase P1-1 (GST P1-1) is often overexpressed in tumor cells and is regarded as a contributor to their drug resistance. Inhibitors of GST P1-1 are expected to counteract drug resistance and may therefore serve as adjuvants in the chemotherapy of cancer by increasing the efficacy of cytostatic drugs. Finding useful inhibitors among compounds used for other indications would be a shortcut to clin. applications and a search for GST P1-1 inhibitors among approved drugs and other compounds was therefore conducted. We tested 1040 FDA-approved compounds as inhibitors of the catalytic activity of purified human GST P1-1 in vitro. We identified chlorophyllide, merbromine, hexachlorophene, and ethacrynic acid as the most effective GST P1-1 inhibitors with IC₅₀ values in the low micromolar range. For comparison, these compounds were even more potent in the inhibition of human GST A3-3, an enzyme implicated in steroid hormone biosynthesis. In distinction from the other inhibitors, which showed conventional inhibition patterns, the competitive inhibitor ethacrynic acid elicited strong kinetic cooperativity in the glutathione saturation of GST P1-1. Apparently, ethacrynic acid serves as an allosteric inhibitor of the enzyme. In their own right, the compounds investigated are less potent than desired for adjuvants in cancer chemotherapy, but the structures of the most potent inhibitors could serve as leads for the synthesis of more efficient adjuvants.

Chemico-Biological Interactions published new progress about 38260-01-4. 38260-01-4 belongs to catalysis-chemistry, auxiliary class Chelating Agents, name is N1,N1′-(Ethane-1,2-diyl)bis(ethane-1,2-diamine) dihydrochloride, and the molecular formula is C6H20Cl2N4, Application In Synthesis of 38260-01-4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Opschoor, J. published the artcileStability of nitrocellulose propellants, HPLC of Formula: 1821-27-8, the publication is Internationale Jahrestagung – Fraunhofer-Institut fuer Treib- und Explosivstoffe (1983), 495-507, database is CAplus.

An investigation was started both into the mechanisms of the decomposition of propellants and into the interactions of NO₂ with the diphenylamine (I) [122-39-4] stabilizers. For this purpose the chem. behavior of amine compounds was studied from literature as well as from exptl. data on NO₂ (gas) and purified I and/or its derivatives During these experiments the composition of the I compounds was analyzed using liquid chromatog. techniques developed for these measurements. The investigation into the nitrosation reaction of I and its derivatives as observed at room temperature both gravimetrically and anal., will be continued with experiments at elevated temperatures which will lead to a temperature-dependent pattern in the behavior of the decomposition reactions of the stabilizer.

Internationale Jahrestagung – Fraunhofer-Institut fuer Treib- und Explosivstoffe published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, HPLC of Formula: 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Taghiof, Majid published the artcileOrganoaluminum and -gallium Thiolates. 1. Synthetic and X-ray Structural Studies, Synthetic Route of 22693-41-0, the publication is Organometallics (1995), 14(6), 2903-17, database is CAplus.

Organoaluminum and -Ga thiolates were prepared in high yield by the reaction of triorganoaluminum and -Ga derivatives with thiols. In this way, [Mes₂Al(¦Ì-SBz)]₂ (Mes = 2,4,6-Me₃C₆H₂; Bz = CH₂Ph) (1), [Me₂Al(¦Ì-SSiPh₃)]₂ (2), [Mes₂Al(¦Ì-SPh)]₂ (3), {Me₂Al[¦Ì-S(2-t-BuC₆H₄)]}₃ (4), {Me₂Al[¦Ì-S(2-Me₃Si)C₆H₄]}₃ (5), {Me₂Al[¦Ì-S(2-i-PrC₆H₄)]}₃ (6), {i-Bu₂Al[¦Ì-S(2,4,6-i-Pr₃C₆H₂)]}₃ (7), {Me₂Al[¦Ì-S(2,6-Me₂C₆H₃)]}₄ (8), and {Me₂Ga[¦Ì-S(2,6-Me₂C₆H₃)]}₄ (9) were prepared and crystallog. characterized. The dimethyl- and dimesitylaluminum thiolates 1–3 are dimeric with four-membered (AlS)₂ rings. The structure of 1 was determined in space group P2₁/n (Number 14): a 10.660(4), b 12.268(2), c 17.793(3) ?, ¦Â 106.94(2)¡ã, Z = 4, R = 6.7%, and R_w = 6.1%. The structures of 2 and 3 were determined in space group P1? (Number 2): a 9.077(2), b 13.847(3), c 16.724(4) ?, ¦Á 101.08(2), ¦Â 95.34(2), ¦Ã 103.38(2)¡ã, Z = 2 (dimers), R = 5.2%, and R_w = 5.1% for 2, and a 11.068(5), b 12.470(3), c 17.654(5) ?, ¦Á 90.97(2), ¦Â 107.77(3), ¦Ã 112.23(3)¡ã, Z = 4, R = 5.9%, and R_w = 4.8% for 3. The dialkylaluminum thiolates, 4–7, are trimeric in the solid state. The structure of 4 was determined in space group P2₁/c, a 9.324(7), b 18.632(5), c 23.959(9) ?, ¦Â 98.31(5)¡ã, Z = 4 (trimers), R = 7.6%, and R_w = 5.2%; 5 in space group P1?, a 10.149(4), b 14.427(5), c 15.159(4) ?, ¦Á 88.19(3), ¦Â 89.39(3), ¦Ã 88.57(3)¡ã, Z = 2 (trimers), R = 5.0%, and R_w = 5.0%; 6 in space group P1?, a 12.538(5), b 13.180(2), c 13.873(2) ?, ¦Á 74.38(1), ¦Â 64.18(2), ¦Ã 69.44(2)¡ã, Z = 2 (trimers), R = 5.2% and R_w = 4.4%; and 7 in space group P2₁/c, a 13.935(2), b 22.563(4), c 25.044(4) ?, ¦Â 101.44(1)¡ã, Z = 4 (trimers), R = 12.5%, and R_w = 14.2%. The S atoms in 7 are in a planar environment. Compounds 8 and 9 are tetrameric with eight-membered (MS)₄ (M = Al, Ga) ring systems. They are isomorphous, and their structures were determined in space group P1?. For 8 a 8.555(1), b 11.869(1), c 12.688(1) ?, ¦Á 96.546(8), ¦Â 106.34(1), ¦Ã 109.06(1)¡ã, Z = 2, R = 5.0%, and R_w = 5.2%, and for 9 a 8.525(2), b 11.805(3), c 12.714(4) ?, ¦Á 96.36(2), ¦Â 106.46(2), ¦Ã 108.90(2)¡ã, Z = 2, R = 6.1%, and R_w = 6.6%.

Organometallics published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C11H10O, Synthetic Route of 22693-41-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Wang, Baifan published the artcilePrediction and molecular field view of drug resistance in HIV-1 protease mutants, Product Details of C5H11NO2S, the publication is Scientific Reports (2022), 12(1), 2913, database is CAplus and MEDLINE.

Conquering the mutational drug resistance is a great challenge in anti-HIV drug development and therapy. Quant. predicting the mutational drug resistance in mol. level and elucidating the three dimensional structure-resistance relationships for anti-HIV drug targets will help to improve the understanding of the drug resistance mechanism and aid the design of resistance evading inhibitors. Here the MB-QSAR (Mutation-dependent Biomacromol. Quant. Structure Activity Relationship) method was employed to predict the mol. drug resistance of HIV-1 protease mutants towards six drugs, and to depict the structure resistance relationships in HIV-1 protease mutants. MB-QSAR models were constructed based on a published data set of Ki values for HIV-1 protease mutants against drugs. Reliable MB-QSAR models were achieved and these models display both well internal and external prediction abilities. Interpreting the MB-QSAR models supplied structural information related to the drug resistance as well as the guidance for the design of resistance evading drugs. This work showed that MB-QSAR method can be employed to predict the resistance of HIV-1 protease caused by polymorphic mutations, which offer a fast and accurate method for the prediction of other drug target within the context of 3D structures.

Scientific Reports published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C12H17NO2, Product Details of C5H11NO2S.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Bai, Yajun published the artcilePolygala tenuifolia-Acori tatarinowii herbal pair as an inspiration for substituted cinnamic ¦Á-asaronol esters: Design, synthesis, anticonvulsant activity, and inhibition of lactate dehydrogenase study, Synthetic Route of 16909-09-4, the publication is European Journal of Medicinal Chemistry (2019), 111650, database is CAplus and MEDLINE.

Inspired by the traditional Chinese herbal pair of Polygala tenuifolia-Acori Tatarinowii for treating epilepsy, 33 novel substituted cinnamic ¦Á-asaronol esters and analogs, I [R = 2-, 3-, 4-OMe, 2,3-(MeO)₂, 2,3,5-(MeO)₃, 2,3,4,5,6-(MeO)₅, 4-Br, 3-CF₃, etc.], II, III, and IV, were designed by Combination of Traditional Chinese Medicine Mol. Chem. (CTCMMC) strategy, synthesized and tested systematically not only for anticonvulsant activity in three mouse models but also for lactate dehydrogenase (LDH) inhibitory activity. Thus, compounds I [R = 3,4,5-(MeO)₃, 2,3,4,5-(MeO)₄, 2,3,4,6-(MeO)₄, 4-F] (V) displayed excellent and broad spectra of anticonvulsant activities with modest ability in preventing neuropathic pain, as well as low neurotoxicity. The protective indexes of these four compounds compared favorably with stiripentol, lacosamide, carbamazepine and valproic acid. 68-70 exhibited good LDH1 and LDH5 inhibitory activities with noncompetitive inhibition type, and were more potent than stiripentol. Compounds V exhibited good LDH1 and LDH5 inhibitory activities with noncompetitive inhibition type, and were more potent than stiripentol. Notably, I [R = 2,3,4,6-(MeO)₄], as a representative agent, was also shown as a moderately pos. allosteric modulator at human ¦Á1¦Â2¦Ã2 GABA_A receptors (EC₅₀ 46.3 ¡À 7.3 ¦ÌM). Thus, I [R = 3,4,5-(MeO)₃, 2,3,4,5-(MeO)₄, 2,3,4,6-(MeO)₄] were promising candidates for developing into anti-epileptic drugs, especially for treatment of refractory epilepsies such as Dravet syndrome.

European Journal of Medicinal Chemistry published new progress about 16909-09-4. 16909-09-4 belongs to catalysis-chemistry, auxiliary class Alkenyl,Carboxylic acid,Benzene,Ether, name is (E)-3-(2,4-Dimethoxyphenyl)acrylic acid, and the molecular formula is C11H12O4, Synthetic Route of 16909-09-4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Ruan, Mengjiao published the artcileCytosolic glucose-6-phosphate dehydrogenases play a pivotal role in Arabidopsis seed development, Related Products of catalysis-chemistry, the publication is Plant Physiology and Biochemistry (Issy-les-Moulineaux, France) (2022), 207-219, database is CAplus and MEDLINE.

Embryo development is essential for seed yield and post-germination growth. Glucose-6-phosphate dehydrogenase (G6PD), the rate-limiting enzyme in oxidative pentose phosphate pathway (OPPP), is widely involved in plant development and stress tolerance by providing NADP (NADPH). In this study, the double mutant (g6pd5/6), overexpression line (G6PD5/6^OE) and complementation line (g6pd5/6^Comp) of cytosolic glucose-6-phosphate dehydrogenases (Cyt-G6PD) were used to investigate Cyt-G6PD roles in embryo development of Arabidopsis. The results showed that the germination rate of g6pd5/6 seeds was delayed in comparison with that of Col-0; moreover, 11.5% of g6pd5/6 seeds did not germinate. The dysfunction of Cyt-G6PD resulted in decreased fresh weight and primary root length of g6pd5/6 seedlings. The height and silique length of g6pd5/6 plants were also decreased. Moreover, the abortion rate of siliques and seeds of g6pd5/6 plants were increased compared with those of Col-0, G6PD5/6^OE and g6pd5/6^Comp lines. However, the dysfunction of Cyt-G6PD did not affect pollen activity; but in g6pd5/6, the embryo development was partially delayed or inhibited. The contents of fatty acids and storage proteins, two main storage materials in Arabidopsis seeds, were decreased in g6pd5/6 seeds. Exogenous application of fatty acids (C18:2; C18:3) alleviated the delayed germination of g6pd5/6 seeds. RT-qPCR results further demonstrated that the early embryo development genes were down-regulated in g6pd5/6. Taken together, Cyt-G6PD plays a pivotal role in plant seed development by regulating the transcriptions of early embryo development genes and the accumulation of storage materials (especially fatty acids).

Plant Physiology and Biochemistry (Issy-les-Moulineaux, France) published new progress about 6217-54-5. 6217-54-5 belongs to catalysis-chemistry, auxiliary class Alkenyl,Carboxylic acid,Aliphatic hydrocarbon chain,Metabolic Enzyme,RAR/RXR,Natural product, name is Docosahexaenoic Acid, and the molecular formula is C22H32O2, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Jin, Ruitao published the artcileIon currents through Kir potassium channels are gated by anionic lipids, Name: (S)-2-Amino-4-(methylthio)butanoic acid, the publication is Nature Communications (2022), 13(1), 490, database is CAplus and MEDLINE.

Ion currents through potassium channels are gated. Constriction of the ion conduction pathway at the inner helix bundle, the textbook gate of Kir potassium channels, has been shown to be an ineffective permeation control, creating a rift in our understanding of how these channels are gated. Here we present evidence that anionic lipids act as interactive response elements sufficient to gate potassium conduction. We demonstrate the limiting barrier to K⁺ permeation lies within the ion conduction pathway and show that this gate is operated by the fatty acyl tails of lipids that infiltrate the conduction pathway via fenestrations in the walls of the pore. Acyl tails occupying a surface groove extending from the cytosolic interface to the conduction pathway provide a potential means of relaying cellular signals, mediated by anionic lipid head groups bound at the canonical lipid binding site, to the internal gate.

Nature Communications published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C5H11NO2S, Name: (S)-2-Amino-4-(methylthio)butanoic acid.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Wang, Huamin published the artcileElectrochemical Oxidation Enables Regioselective and Scalable ¦Á-C(sp³)-H Acyloxylation of Sulfides, Application In Synthesis of 2051-95-8, the publication is Journal of the American Chemical Society (2021), 143(9), 3628-3637, database is CAplus and MEDLINE.

A highly selective, environmentally friendly, and scalable electrochem. protocol for the construction of ¦Á-acyloxy sulfides e.g., (p-tolylthio)methyl acetate, through the synergistic effect of self-assembly-induced C(sp³)-H/O-H cross-coupling, is reported. It features exceptionally broad substrate scope, high regioselectivity, gram-scale synthesis, construction of complex mols. e.g., I, and applicability to a variety of nucleophiles such as acetic acid, cyclohexanecarboxylic acid, benzoic acid, benzotriazole, etc. Moreover, the soft X-ray absorption technique and a series of control experiments have been utilized to demonstrate the pivotal role of the self-assembly of the substrates, which indeed is responsible for the excellent compatibility and precise control of high regioselectivity in electrochem. protocol.

Journal of the American Chemical Society published new progress about 2051-95-8. 2051-95-8 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ketone, name is 3-Benzoylpropionicacid, and the molecular formula is C9H10O4, Application In Synthesis of 2051-95-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia