Proceedings of the Japan Academy. Series B, Physical and Biological Sciences最新文献_第7页

Purple pigments, catechinopyranocyanidins A and B, in the seed coats of red adzuki beans elute during processing to yield purple-colored an-paste. 红小豆种皮中的紫色色素儿茶酚花青素A和B在加工过程中被洗脱，形成紫色的糊状。

IF 2.9 3区综合性期刊

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences Pub Date : 2025-01-01 DOI: 10.2183/pjab.101.037

Kumi Yoshida, Mika Kawahara, Yoko Takayama, Tomoyo Asano

{"title":"Purple pigments, catechinopyranocyanidins A and B, in the seed coats of red adzuki beans elute during processing to yield purple-colored an-paste.","authors":"Kumi Yoshida, Mika Kawahara, Yoko Takayama, Tomoyo Asano","doi":"10.2183/pjab.101.037","DOIUrl":"10.2183/pjab.101.037","url":null,"abstract":"Red adzuki beans (Vigna angularis) are primarily used in producing sweet an-paste for use in Japanese confectionery, where the quality of the an-paste is evaluated based on its purple color. Catechinopyranocyanidins A and B (cpcA and cpcB) are seed coat pigments and might be responsible for the purple color of an-paste, thus, analyzing them in an-paste is crucial. However, no quantitative analyses of these compounds in an-paste have been reported. We examined extraction conditions for cpcA and cpcB from an-paste and established a quantitative analytical method. Additionally, we developed a pre-vacuum processing procedure for preparing purple an-paste. The more purple the an-paste was, the higher the content of cpcA and cpcB extracted from it. The purple color of an-paste originated from the catechinopyranocyanidins eluted from the seed coats upon boiling. Using the proposed procedure, we prepared more intensely purple wet sarashi-an compared with that generated via a conventional procedure.","PeriodicalId":20707,"journal":{"name":"Proceedings of the Japan Academy. Series B, Physical and Biological Sciences","volume":"101 10","pages":"648-656"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12932078/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145725780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A strategy to access unprecedented reactive intermediates featuring carbenes, carbocations, biradicals, and inverted σ-bonds via hypervalent λ³-haloganes. 通过高价λ3-卤代烷获得前所未有的反应中间体，包括碳烯、碳阳离子、双基和倒转σ-键。

IF 2.9 3区综合性期刊

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences Pub Date : 2025-01-01 DOI: 10.2183/pjab.101.036

Kazunori Miyamoto, Masanobu Uchiyama

引用次数: 0

Errata to "Performance comparison of complementary relationship and inverse analysis methods for evapotranspiration estimation". 对“蒸散估算互补关系和逆分析方法的性能比较”的勘误表。

IF 4.6 3区综合性期刊

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences Pub Date : 2025-01-01 DOI: 10.2183/pjab.101.038

Toshisuke Maruyama, Manabu Segawa, Hiroshi Takimoto

引用次数: 0

Incorporation of photosynthetically active algal chloroplasts in cultured mammalian cells towards photosynthesis in animals. 将光合作用活跃的藻类叶绿体纳入培养的哺乳动物细胞，以实现动物的光合作用。

IF 4.4 3区综合性期刊

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences Pub Date : 2024-11-11 Epub Date: 2024-10-31 DOI: 10.2183/pjab.100.035

Ryota Aoki, Yayoi Inui, Yoji Okabe, Mayuko Sato, Noriko Takeda-Kamiya, Kiminori Toyooka, Koki Sawada, Hayato Morita, Baptiste Genot, Shinichiro Maruyama, Tatsuya Tomo, Kintake Sonoike, Sachihiro Matsunaga

{"title":"Incorporation of photosynthetically active algal chloroplasts in cultured mammalian cells towards photosynthesis in animals.","authors":"Ryota Aoki, Yayoi Inui, Yoji Okabe, Mayuko Sato, Noriko Takeda-Kamiya, Kiminori Toyooka, Koki Sawada, Hayato Morita, Baptiste Genot, Shinichiro Maruyama, Tatsuya Tomo, Kintake Sonoike, Sachihiro Matsunaga","doi":"10.2183/pjab.100.035","DOIUrl":"10.2183/pjab.100.035","url":null,"abstract":"Chloroplasts are photosynthetic organelles that evolved through the endosymbiosis between cyanobacteria-like symbionts and hosts. Many studies have attempted to isolate intact chloroplasts to analyze their morphological characteristics and photosynthetic activity. Although several studies introduced isolated chloroplasts into the cells of different species, their photosynthetic activities have not been confirmed. In this study, we isolated photosynthetically active chloroplasts from the primitive red alga Cyanidioschyzon merolae and incorporated them in cultured mammalian cells via co-cultivation. The incorporated chloroplasts retained their thylakoid structure in intracellular vesicles and were maintained in the cytoplasm, surrounded by the mitochondria near the nucleus. Moreover, the incorporated chloroplasts maintained electron transport activity of photosystem II in cultured mammalian cells for at least 2 days after the incorporation. Our top-down synthetic biology-based approach may serve as a foundation for creating artificially photosynthetic animal cells.","PeriodicalId":20707,"journal":{"name":"Proceedings of the Japan Academy. Series B, Physical and Biological Sciences","volume":" ","pages":"524-536"},"PeriodicalIF":4.4,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11635087/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Origin of an orbiting star around the galactic supermassive black hole. 围绕银河系超大质量黑洞的轨道恒星的起源。

IF 3.1 3区综合性期刊

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences Pub Date : 2024-01-11 Epub Date: 2023-12-25 DOI: 10.2183/pjab.100.007

Shogo Nishiyama, Tomohiro Kara, Brian Thorsbro, Hiromi Saida, Yohsuke Takamori, Masaaki Takahashi, Takayuki Ohgami, Kohei Ichikawa, Rainer Schödel

{"title":"Origin of an orbiting star around the galactic supermassive black hole.","authors":"Shogo Nishiyama, Tomohiro Kara, Brian Thorsbro, Hiromi Saida, Yohsuke Takamori, Masaaki Takahashi, Takayuki Ohgami, Kohei Ichikawa, Rainer Schödel","doi":"10.2183/pjab.100.007","DOIUrl":"10.2183/pjab.100.007","url":null,"abstract":"The tremendous tidal force that is linked to the supermassive black hole (SMBH) at the center of our galaxy is expected to strongly subdue star formation in its vicinity. Stars within 1'' from the SMBH thus likely formed further from the SMBH and migrated to their current positions. In this study, spectroscopic observations of the star S0-6/S10, one of the closest (projected distance from the SMBH of ≈0''.3) late-type stars were conducted. Using metal absorption lines in the spectra of S0-6, the radial velocity of S0-6 from 2014 to 2021 was measured, and a marginal acceleration was detected, which indicated that S0-6 is close to the SMBH. The S0-6 spectra were employed to determine its stellar parameters including temperature, chemical abundances ([M/H], [Fe/H], [α/Fe], [Ca/Fe], [Mg/Fe], [Ti/Fe]), and age. As suggested by the results of this study, S0-6 is very old (≳10 Gyr) and has an origin different from that of stars born in the central pc region.","PeriodicalId":20707,"journal":{"name":"Proceedings of the Japan Academy. Series B, Physical and Biological Sciences","volume":" ","pages":"86-99"},"PeriodicalIF":3.1,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10864168/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138478406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cloning of human Type I interferon cDNAs. 克隆人类 I 型干扰素 cDNA。

IF 3.1 3区综合性期刊

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences Pub Date : 2024-01-11 Epub Date: 2023-11-30 DOI: 10.2183/pjab.100.001

Shigekazu Nagata

引用次数: 0

Calmodulin: a highly conserved and ubiquitous Ca²⁺ sensor. 钙调蛋白：高度保守且无处不在的 Ca2+ 传感器。

IF 4.4 3区综合性期刊

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences Pub Date : 2024-01-01 DOI: 10.2183/pjab.100.025

Kenji Sobue

{"title":"Calmodulin: a highly conserved and ubiquitous Ca2+ sensor.","authors":"Kenji Sobue","doi":"10.2183/pjab.100.025","DOIUrl":"10.2183/pjab.100.025","url":null,"abstract":"Calcium ions (Ca2+) play critical roles in various biological phenomena. The free Ca2+ concentration in the cytoplasm of a resting cell is at the 10-7 M level, whereas that outside the cell is 10-3 M, creating a 10,000-fold gradient of Ca2+ concentrations across the cell membrane, separating the intracellular and extracellular solutions.1),2) When a cell is activated by external stimuli, the intracellular Ca2+ concentration increases to levels of 10-6-10-5 M through Ca2+ entry from the extracellular solution via plasma membrane Ca2+ channels and/or Ca2+ release from intracellular stores. This transient increase in Ca2+ functions as an important signal mediated by Ca2+ sensors. Thus, Ca2+ signals are transmitted to intracellular loci such as distinct, localized targets of Ca2+ sensors. Among numerous Ca2+ sensors present in cells, calmodulin is a highly conserved and ubiquitous Ca2+ sensor.3).","PeriodicalId":20707,"journal":{"name":"Proceedings of the Japan Academy. Series B, Physical and Biological Sciences","volume":"100 7","pages":"368-386"},"PeriodicalIF":4.4,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11413395/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141860712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum to "Establishment of immune suppression by cancer cells in the tumor microenvironment". 对 "癌细胞在肿瘤微环境中建立免疫抑制 "的勘误。

IF 3.1 3区综合性期刊

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences Pub Date : 2024-01-01 DOI: 10.2183/pjab.100.016

Hiroyoshi Nishikawa

引用次数: 0

Invention of the split-anode magnetron. 发明分裂阳极磁控管。

IF 4.4 3区综合性期刊

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences Pub Date : 2024-01-01 DOI: 10.2183/pjab.100.018

Hidenori Mimura

引用次数: 0

Optical coupling of individual air-suspended carbon nanotubes to silicon microcavities. 单个空气悬浮碳纳米管与硅微腔的光学耦合。