Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects最新文献_第3页

The optical and electrical properties of mitochondrial preparations 线粒体制剂的光学和电学性质

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects Pub Date : 1964-11-29 DOI: 10.1016/0926-6577(64)90093-2

Ronald S. Snart

引用次数: 3

Salts and amino acids as stabilising agents for reconstituted collagen fibres 盐和氨基酸作为重建胶原纤维的稳定剂

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects Pub Date : 1964-11-29 DOI: 10.1016/0926-6577(64)90098-1

J.K. Candlish, G.R. Tristram

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引用次数: 5

The behavior of the tyrocidines at interfaces 酪胺类化合物在界面处的行为

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects Pub Date : 1964-11-29 DOI: 10.1016/0926-6577(64)90103-2

Alexandre Rothen

{"title":"The behavior of the tyrocidines at interfaces","authors":"Alexandre Rothen","doi":"10.1016/0926-6577(64)90103-2","DOIUrl":"10.1016/0926-6577(64)90103-2","url":null,"abstract":"<div>The tyrocidines A, B and C, which are cyclic decepeptides, can be adsorbed layers 150–250 Å thick on metallized glass slides coated with a few monolayers of the barium salts of high homologs of straight-chain fatty acids. There is a sharp transition temperature for each fatty acid below which no adsorption occurs and above which a thick layer of tyrocidine can be adsorbed. The transition temperatures increase with the length of the chain of the acid by 3–3.5° per additional carbon atom in the chain. The range of the transition temperatures covers an interval of roughly 30°, from a few degrees centigrade for myristic acid to over 30° for ligoceric acid. A transition point can be considered as a pseudo melting point. Tyrocidine can be adsorbed in spite of a protective membrane deposited on the fatty acid layers. If the membrane consists of two layers of a longer fatty acid whose transition temperature is higher than the temperature at which the adsorption is carried out, an adsorption nevertheless takes place above a certain temperature which is intermediate between the temperature of transition of the underlying shorter acid and that of the longer acid used for the membrane. Cooperative phenomena involving many of the successive layers deposited on the slide play a role in these interactions.</div>","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1964-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0926-6577(64)90103-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23802390","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: 8

Post-irradiation changes in solutions of hyaluronic acid exposed to X-rays 透明质酸溶液在x射线照射后的变化

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects Pub Date : 1964-11-29 DOI: 10.1016/0926-6577(64)90106-8

H.B. Lamberts, P. Alexander

引用次数: 12

The relationship between electron spin resonance signals and haemoprotein of liver microsomes 电子自旋共振信号与肝微粒体血红蛋白的关系

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects Pub Date : 1964-11-29 DOI: 10.1016/0926-6577(64)90110-X

Fumio Wada , Taneaki Higashi , Yoshiyuki Ichikawa , Kozue Tada , Yukiya Sakamoto

引用次数: 5

Selective accumulation of potassium ion by gel and kidney slices 凝胶和肾片对钾离子选择性积累的影响

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects Pub Date : 1964-11-29 DOI: 10.1016/0926-6577(64)90102-0

Philippa M. Wiggins

{"title":"Selective accumulation of potassium ion by gel and kidney slices","authors":"Philippa M. Wiggins","doi":"10.1016/0926-6577(64)90102-0","DOIUrl":"10.1016/0926-6577(64)90102-0","url":null,"abstract":"<div><ul><li>1.1. Slices of denatured protein gels and cortical slices from the kidneys of adult rats were subjected to equivalent experimental conditions in order to determine the factors promoting selective K+ accumulation.</li><li>2.2. The addition of polythelene glycol 6000 to the medium decreased the water content of rat kidney cortex slices at 0° and at 38°, and was used to control swelling at low concentrations of ions.</li><li>3.3. K+ selectivity of slices of gel at 20° and of anaerobic tissue at 38° incubated in media of constant composition decreased as the water content increased.</li><li>4.4. K+ selectivity of slices of gel at 20° and of kidney cortex incubated both at 0° and anaerobically at 38° increased as the concentrations of Na+ and K+ in the medium were decreased whilst the Na+/K+ ratio and the water content of the slices were held constant.</li><li>5.5. K+ selectivity of slices of gel at 20° and of kidney cortex incubated anaerobically both at 38° and at 0° increased as the relative concentration of K+ in the medium decreased whilst the sum of the concentrations og Na+ and K+ in the medium and the water content of the slices were held constant.</li><li>6.6. These results have been interpreted in terms of a model first proposed for ion- exchange resins. It has been shown that with further assumptions the model could account for the asymmetric distribution of Na+ and K+ in respiring tissue, and for the swelling, uptake of Na+ and loss of K+ that occur with anoxia at 38° or on chilling to 0°.</li></ul></div>","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1964-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0926-6577(64)90102-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23802389","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

Action spectrum of the Hill reaction with ferricyanide and ferricyanide/indophenol by isolated chloroplasts 分离叶绿体与铁氰化物和铁氰化物/吲哚酚Hill反应的作用谱

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects Pub Date : 1964-11-29 DOI: 10.1016/0926-6577(64)90111-1

John Biggins , Kenneth Sauer

引用次数: 11

Carotenoid de-epoxidations in algae 藻类中类胡萝卜素的去环氧化

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects Pub Date : 1964-11-29 DOI: 10.1016/0926-6577(64)90091-9

Norman I. Krinsky

引用次数: 29

On the complexes of actinomycin with purines and deoxyribonucleic acid 放线菌素与嘌呤和脱氧核糖核酸配合物的研究

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects Pub Date : 1964-09-25 DOI: 10.1016/0926-6577(64)90201-3

B. Pullman

引用次数: 7

Un dispositif automatique de mesure et d'enregistrement du flux net d'eau à travers la peau et la vessie des amphibiens 一种自动测量和记录两栖动物皮肤和膀胱净水流的装置

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects Pub Date : 1964-09-25 DOI: 10.1016/0926-6577(64)90202-5

J. Bourguet, S. Jard

引用次数: 81