发布求助
文献互助 智能选刊 最新文献

Agricultural and biological chemistry最新文献

筛选
英文 中文
Segregated Intake of Protein-rich and -free Diets in Two Meals a Day; Its Effect on Growth and Vital Functions in Rats 在一日两餐中分别摄入富含蛋白质和无蛋白质的饮食;其对大鼠生长及生命功能的影响
Agricultural and biological chemistry Pub Date : 1991-12-01 DOI: 10.1271/BBB1961.55.2979
K. Sugiyama, K. Iwami, F. Ibuki
{"title":"Segregated Intake of Protein-rich and -free Diets in Two Meals a Day; Its Effect on Growth and Vital Functions in Rats","authors":"K. Sugiyama, K. Iwami, F. Ibuki","doi":"10.1271/BBB1961.55.2979","DOIUrl":"https://doi.org/10.1271/BBB1961.55.2979","url":null,"abstract":"Growing rats meal-fed for 4 weeks with a 20% or 40% casein diet in the morning (9:00–11:00) and a non-protein diet in the evening (19:00-21:00), or vice versa, were examined for growth and metabolic changes. A pair of groups given the 40% casein diet at one meal and the protein-free diet at the other meal, although becoming a little different from each other in growth, did not significantly differ from the control given only the 20% casein diet at the two meals. A pair of groups alternately given the 20% casein and protein-free diets, although excelling in protein efficiency ratio, were far inferior in growth to the groups given the 40% casein diet at either of the two meals. In any case, the rats with alternation of the diets sufficient and deficient in protein preferred the 20% or 40% casein diet to the protein-free one at whichever feeding time, and had a higher body weight gain when the casein diet was administered in the evening. The differences among these groups in protein intake throughout the exp...","PeriodicalId":7729,"journal":{"name":"Agricultural and biological chemistry","volume":"7 1","pages":"2979-2985"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89016343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Specific Adsorption of Immunoglobulin G1 in Bovine Colostrum on Sephadex and Its Mitogenic Activity on Mouse Splenocytes 牛初乳免疫球蛋白G1在葡聚糖上的特异性吸附及其对小鼠脾细胞的有丝分裂活性
Agricultural and biological chemistry Pub Date : 1991-12-01 DOI: 10.1271/BBB1961.55.3103
M. Miura, Tadao Saito, H. Kitazawa, T. Itoh, T. Inamoto
{"title":"Specific Adsorption of Immunoglobulin G1 in Bovine Colostrum on Sephadex and Its Mitogenic Activity on Mouse Splenocytes","authors":"M. Miura, Tadao Saito, H. Kitazawa, T. Itoh, T. Inamoto","doi":"10.1271/BBB1961.55.3103","DOIUrl":"https://doi.org/10.1271/BBB1961.55.3103","url":null,"abstract":"Bovine colostrum immediately after parturition contains a high concentration ofimmunoglobulin (Ig) in which 95% or more are IgG type1} and it is important for the bovine neonate to establish passive immunity. It is also known that bovine colostrum contains various biologically active components. However, components that affect the growth of the cells involved in the immunesystem are not known. It is known that Concanavalin A (Con A) from jack beans (Canavalia ensiformis) agglutinates erythrocytes of various animal species2) and has mitogenic activity for mouse T lymphocytes.3) Con A has been isolated by a single affinity chromatography on Sephadex gel.4) In 1983, Shimada et al.5) have reported the specific binding of a part ofIg in bovine plasma to Sephadex. From the similar properties of Con A and bovine serum Ig with respect to binding to Sephadex, we suspected that certain bovine","PeriodicalId":7729,"journal":{"name":"Agricultural and biological chemistry","volume":"15 1","pages":"3103-3105"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75122143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Synthesis of Chiral Methyl Cucurbate and Its Analogs 手性黄瓜酸甲酯及其类似物的合成
Agricultural and biological chemistry Pub Date : 1991-12-01 DOI: 10.1271/BBB1961.55.2939
J. Takehara, T. Oritani, K. Yamashita
{"title":"Synthesis of Chiral Methyl Cucurbate and Its Analogs","authors":"J. Takehara, T. Oritani, K. Yamashita","doi":"10.1271/BBB1961.55.2939","DOIUrl":"https://doi.org/10.1271/BBB1961.55.2939","url":null,"abstract":"Natural ( + )-(1R,2S,3S)-methyl cucurbate (1b) and the ( – )-δ-lactone of 3-epi-cucurbic acid (16) were synthesized from (+)-(1R,6S,7R)-bicyclo [4.3.0] non-3-en-7-ol (5). Asymmetric hydrolysis of the acetate (8) of ( ± )-5 with pancreatin gave optically pure the ( + )-(7R)-alcohol (5) and (–)-(7S)-acetate (8). An ozonolysis product of ( + )-5 was transformed to ( – )-16 and ( + )-(3S)-1b with inversion of the (7R)-hydroxyl group. Similarly, unnatural (–)-1b and (+)-16 were prepared from optically pure ( — )-5. The growth inhibitory activities of these synthesized chiral compounds toward lettuce seedlings were examined.","PeriodicalId":7729,"journal":{"name":"Agricultural and biological chemistry","volume":"36 5 1","pages":"2939-2944"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77519057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Involvement of NH2-terminal pro-sequence in the production of active aqualysin I (a thermophilic serine protease) in Escherichia coli. nh2末端前序列参与大肠杆菌活性溶酶I(一种嗜热丝氨酸蛋白酶)的产生。
Agricultural and biological chemistry Pub Date : 1991-12-01
Y C Lee, Y Miyata, I Terada, T Ohta, H Matsuzawa
{"title":"Involvement of NH2-terminal pro-sequence in the production of active aqualysin I (a thermophilic serine protease) in Escherichia coli.","authors":"Y C Lee,&nbsp;Y Miyata,&nbsp;I Terada,&nbsp;T Ohta,&nbsp;H Matsuzawa","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Aqualysin I is a heat-stable subtilisin-type protease produced by Thermus aquaticus YT-1. The precursor of aqualysin I consists of four domains: an NH2-terminal signal peptide, an NH2-terminal pro-sequence, a protease domain, and a COOH-terminal pro-sequence. In Escherichia coli cells harboring recombinant plasmid carrying the aqualysin I gene, proteolytic activity is obtained on treatment at 65 degrees C and mature enzyme is detected. In the case of mutant genes containing partial deletions in the NH2-terminal pro-sequence, no proteolytic activity was detected and the precursor protein was found to be unstable in E. coli. These results indicate that the NH2-terminal pro-sequence is required to produce the active enzyme by stabilizing the precursor structure. Amino acid substitutions in the conserved sequence of the NH2-terminal pro-sequence found among subtilisin-type proteases made the processing faster compared with the wild type.</p>","PeriodicalId":7729,"journal":{"name":"Agricultural and biological chemistry","volume":"55 12","pages":"3027-32"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12541906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Immobilization of Pseudomonas L-Phe oxidase on a nylon membrane for possible use as an amino acid sensor. 假单胞菌L-Phe氧化酶在尼龙膜上的固定化，可能用作氨基酸传感器。
Agricultural and biological chemistry Pub Date : 1991-12-01 DOI: 10.1080/00021369.1991.10857909
H. Nakajima, H. Koyama, H. Suzuki
{"title":"Immobilization of Pseudomonas L-Phe oxidase on a nylon membrane for possible use as an amino acid sensor.","authors":"H. Nakajima, H. Koyama, H. Suzuki","doi":"10.1080/00021369.1991.10857909","DOIUrl":"https://doi.org/10.1080/00021369.1991.10857909","url":null,"abstract":"","PeriodicalId":7729,"journal":{"name":"Agricultural and biological chemistry","volume":"119 1","pages":"3117-8"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77480534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
E-15, a Novel Polysaccharide Mitogen from Nocardia Specific for B Cells 诺卡菌B细胞特异性多糖丝裂原E-15
Agricultural and biological chemistry Pub Date : 1991-12-01 DOI: 10.1271/BBB1961.55.2987
T. Kurisaki, K. Munemura, K. Kobayashi, Masakuni Yamamoto, Midori Hayashi, A. Nakamura, J. Magae, H. Kusakabe, M. Uramoto, K. Isono, K. Nagai, M. Yamasaki
{"title":"E-15, a Novel Polysaccharide Mitogen from Nocardia Specific for B Cells","authors":"T. Kurisaki, K. Munemura, K. Kobayashi, Masakuni Yamamoto, Midori Hayashi, A. Nakamura, J. Magae, H. Kusakabe, M. Uramoto, K. Isono, K. Nagai, M. Yamasaki","doi":"10.1271/BBB1961.55.2987","DOIUrl":"https://doi.org/10.1271/BBB1961.55.2987","url":null,"abstract":"A novel mitogen, E-15, which induced blastogenesis of mouse splenocytes, was purified from the culture filtrate of an actinomycete through ethanol precipitation, anion and cation exchange column chromatography, and gel filtration. The producing organism was identified as Nocar dia asteroides. Spectronic study demonstrated that it was a polysaccharide. Acid hydrolysis of E-15 yielded glucose and glucosamine. The active substance was eluted at the molecular mass between 90 kDa and 750 kDa on gel filtration.E-15 induced a mitogenic response of mouse splenocytes above 1 μg/ml and its potency of induction was superior to a lipopolysaccharide that is known to be a polyclonal B cell-specific mitogen. It showed no toxicity up to 100 μg/ml. The cell surface phenotypes of the blast cells induced by E-15 were analyzed by flow cytometry; they had surface immunoglobulins but no Lyt-2 antigen. Thus it was suggested that E-15 was a B-cell-specific mitogen.","PeriodicalId":7729,"journal":{"name":"Agricultural and biological chemistry","volume":"58 1","pages":"2987-2991"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88656060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Enzymic Production of Sweet Stevioside Derivatives : Transglucosylation by Glucosidases(Organic Chemistry) 甜菊糖苷衍生物的酶法生产:葡萄糖苷酶的转糖基化(有机化学)
Agricultural and biological chemistry Pub Date : 1991-12-01 DOI: 10.1080/00021369.1991.10857912
S. Lobov, R. Kasai, K. Ohtani, O. Tanaka, K. Yamasaki
{"title":"Enzymic Production of Sweet Stevioside Derivatives : Transglucosylation by Glucosidases(Organic Chemistry)","authors":"S. Lobov, R. Kasai, K. Ohtani, O. Tanaka, K. Yamasaki","doi":"10.1080/00021369.1991.10857912","DOIUrl":"https://doi.org/10.1080/00021369.1991.10857912","url":null,"abstract":"For the purpose of improving sweetness and a further study on the structure-sweetness relationship of steviol glycosides, transglycosylation of stevioside by a variety of commercial glucosidases was investigated. It was revealed that two α-glucosidases gave glucosylated products. Transglucosylation of stevioside by Pullulanase and pullulan exclusively afforded three products, 13-O-[β-maltotriosyl-(1 → 2)-β-d-glucosyl]-19-O-β-d-glucosyl-steviol (1), 13-O-[β-maltosyl-(1 → 2)-β-d-glucosyl]-19-O-β-d-glucosyl-steviol (2) and 13-O-β-sophorosyl-19-O-β-maltotriosyl-steviol (3). All of these products have already been obtained by trans-α-1,4-glucosylation of stevioside by the cyclodextrin glucano-transferase starch system, and 1 and 2 have been proven to be tasty and potent sweeteners. Transglucosylation of stevioside by Biozyme L and maltose afforded three new products, 4, 5 and 6, the structures of these compounds being elucidated as 13-O-β-sophorosyl-19-O-β-isomaltosyl-steviol (4), 13-O-β-isomaltosyl(l → 2)-β-d...","PeriodicalId":7729,"journal":{"name":"Agricultural and biological chemistry","volume":"25 1","pages":"2959-2965"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90554454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
Purification and properties of thermostable tryptophanase from an obligately symbiotic thermophile, Symbiobacterium thermophilum. 嗜热共生菌嗜热共生菌中耐热色氨酸酶的纯化及性质研究。
Agricultural and biological chemistry Pub Date : 1991-12-01
S Suzuki, T Hirahara, S Horinouchi, T Beppu
{"title":"Purification and properties of thermostable tryptophanase from an obligately symbiotic thermophile, Symbiobacterium thermophilum.","authors":"S Suzuki,&nbsp;T Hirahara,&nbsp;S Horinouchi,&nbsp;T Beppu","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A thermostable tryptophanase was extracted from a thermophilic bacterium, Symbiobacterium thermophilum strain T, which is obligately symbiotic with the thermophilic Bacillus strain S. The enzyme was purified 21-fold to homogeneity with 19% recovery by a series of chromatographies using anion-exchange, hydroxylapatite, hydrophobic interaction, and MonoQ anion-exchange columns. The molecular weight of the purified enzyme was estimated to be approximately 210,000 by gel filtration, while the molecular weight of its subunit was 46,000 by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, which indicates that the native enzyme is composed of four homologous subunits. The isoelectric point of the enzyme was 4.9. The tryptophanase was stable to heating at 65 degrees C for 20 min and the optimum temperature for the enzyme activity for 20 min reaction was 70 degrees C. The optimum pH was 7.0. The NH2-terminal amino acid sequence of this tryptophanase shows similarity to that of Escherichia coli K-12, despite a great difference in the thermostability of these two enzymes. The purified enzyme catalyzed the degradation (alpha, beta-elimination) of L-tryptophan into indole, pyruvate, and ammonia in the presence of pyridoxal-5'-phosphate. The Km value for L-tryptophan was 1.47 mM. 5-Hydroxy-L-tryptophan, 5-methyl-DL-tryptophan, L-cysteine, S-methyl-L-cysteine, and L-serine were also used as substrates and converted to pyruvate. The reverse reaction of alpha, beta-elimination of this tryptophanase produced L-tryptophan from indole and pyruvate in the presence of a high concentration of ammonium acetate.</p>","PeriodicalId":7729,"journal":{"name":"Agricultural and biological chemistry","volume":"55 12","pages":"3059-66"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12541908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NifA protein synthesized in vitro binds to the upstream activator sequence in the promoter of the Klebsiella oxytoca nifB gene. 体外合成的NifA蛋白结合克雷伯菌氧化克雷伯菌nifB基因启动子上游激活子序列。
Agricultural and biological chemistry Pub Date : 1991-12-01
Y M Kim, M Hidaka, H Masaki, T Beppu, T Uozumi
{"title":"NifA protein synthesized in vitro binds to the upstream activator sequence in the promoter of the Klebsiella oxytoca nifB gene.","authors":"Y M Kim,&nbsp;M Hidaka,&nbsp;H Masaki,&nbsp;T Beppu,&nbsp;T Uozumi","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":7729,"journal":{"name":"Agricultural and biological chemistry","volume":"55 12","pages":"3121-3"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12541911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Energy Metabolism of a Psychrophilic Bacterium, Vibrio sp., and Escherichia coli B at Low Temperature 低温下嗜冷细菌、弧菌和大肠杆菌B的能量代谢
Agricultural and biological chemistry Pub Date : 1991-12-01 DOI: 10.1271/BBB1961.55.3119
T. Oguma, T. Araki, S. Sagisaka
{"title":"Energy Metabolism of a Psychrophilic Bacterium, Vibrio sp., and Escherichia coli B at Low Temperature","authors":"T. Oguma, T. Araki, S. Sagisaka","doi":"10.1271/BBB1961.55.3119","DOIUrl":"https://doi.org/10.1271/BBB1961.55.3119","url":null,"abstract":"","PeriodicalId":7729,"journal":{"name":"Agricultural and biological chemistry","volume":"44 1","pages":"3119-3120"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77660466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信