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

{"title":"The inhibition of transport of glucose into human erythrocytes by 2,3,4,6-tetra[O-acethyl]-β-d-glucopyranose","authors":"L. Lacko,&nbsp;M. Burger","doi":"10.1016/0926-6577(64)90099-3","DOIUrl":"10.1016/0926-6577(64)90099-3","url":null,"abstract":"<div><p><span><math><mtext>2,3,4,6-</mtext><mtext>tetra</mtext><mtext>[O-</mtext><mtext>acetyl</mtext><mtext>]-β-</mtext><mtext>d</mtext><mtext>-</mtext><mtext>glucopyranose</mtext></math></span> penetrated into human erythrocytes following a transport mechanism different from that of glucose. However, TAG interacted with the glucose-carrier ssytem, inhibiting the transport of glucose to a variable extent, depending on experimental conditions.</p><p>Comparison of the inhibitory effect of TAG on exchange and non-exchange transport showed that it affected a suppression of glucose transport similar to that obtained by lowering the temperature.</p><p>The presence of subtances in the matrix of the membrane which regulate the movement of carriers, interacting similarly to TAG, is tentatively suggested.</p></div>","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":"88 3","pages":"Pages 564-569"},"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)90099-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23802386","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}

{"title":"Optical absorption of the porphyrin free radical formed in a reversible photochemical reaction","authors":"D. Mauzerall ,&nbsp;G. Feher","doi":"10.1016/0926-6577(64)90112-3","DOIUrl":"10.1016/0926-6577(64)90112-3","url":null,"abstract":"","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":"88 3","pages":"Pages 658-660"},"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)90112-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23802397","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}

{"title":"Transport of neutral, dibasic and N-methyl-substituted amino acids by rat intestine","authors":"P. Reed Larsen,&nbsp;Joan E. Ross,&nbsp;Donald F. Tapley","doi":"10.1016/0926-6577(64)90100-7","DOIUrl":"10.1016/0926-6577(64)90100-7","url":null,"abstract":"<div><p>The ability of everted sacs of rat small intestine to transport neutral, dibasic and <em>N</em>-methyl-substituted amino acids has been determined. The data obtained support the suggestion that three separate amino acid-transport systems are present in rat intestine.</p></div>","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":"88 3","pages":"Pages 570-577"},"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)90100-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23802387","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}

{"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><p></p><ul><li><span>1.</span><span><p>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.</p></span></li><li><span>2.</span><span><p>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.</p></span></li><li><span>3.</span><span><p>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.</p></span></li><li><span>4.</span><span><p>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.</p></span></li><li><span>5.</span><span><p>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.</p></span></li><li><span>6.</span><span><p>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°.</p></span></li></ul></div>","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":"88 3","pages":"Pages 593-605"},"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}

{"title":"Action spectrum of the Hill reaction with ferricyanide and ferricyanide/indophenol by isolated chloroplasts","authors":"John Biggins ,&nbsp;Kenneth Sauer","doi":"10.1016/0926-6577(64)90111-1","DOIUrl":"10.1016/0926-6577(64)90111-1","url":null,"abstract":"","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":"88 3","pages":"Pages 655-657"},"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)90111-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23802396","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}

{"title":"Carotenoid de-epoxidations in algae","authors":"Norman I. Krinsky","doi":"10.1016/0926-6577(64)90091-9","DOIUrl":"10.1016/0926-6577(64)90091-9","url":null,"abstract":"<div><p>The carotenoid pigments of <em>Euglena gracilis</em> were studied following illumination of the cells under aerobic and anaerobic conditions. Cells harvested from cultures in the stationary phase displayed a photochemical conversion of epoxide carotenoids to non-epoxide pigments under anaerobic conditions. This reaction was reversed in the dark and could be inhibited by aerobiosis. Analysis of the individual pigments indicated that the following reaction was occurring: <figure><img></figure> Carotenes, neoxanthin and trollein remained essentially unchanged under these conditions.</p></div>","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":"88 3","pages":"Pages 487-491"},"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)90091-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80124622","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}

{"title":"On the complexes of actinomycin with purines and deoxyribonucleic acid","authors":"B. Pullman","doi":"10.1016/0926-6577(64)90201-3","DOIUrl":"10.1016/0926-6577(64)90201-3","url":null,"abstract":"","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":"88 2","pages":"Pages 440-441"},"PeriodicalIF":0.0,"publicationDate":"1964-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0926-6577(64)90201-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23802482","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}

{"title":"Un dispositif automatique de mesure et d'enregistrement du flux net d'eau à travers la peau et la vessie des amphibiens","authors":"J. Bourguet,&nbsp;S. Jard","doi":"10.1016/0926-6577(64)90202-5","DOIUrl":"10.1016/0926-6577(64)90202-5","url":null,"abstract":"","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":"88 2","pages":"Pages 442-444"},"PeriodicalIF":0.0,"publicationDate":"1964-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0926-6577(64)90202-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80197544","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}

{"title":"Site of photosynthetic electron-transport systems coupling phosphorylation with chromatophores from Rhodospirillum rubrum","authors":"T. Horio,&nbsp;J. Yamashita","doi":"10.1016/0926-6577(64)90180-9","DOIUrl":"10.1016/0926-6577(64)90180-9","url":null,"abstract":"<div><p></p><ul><li><span>1.</span><span><p>1. With chromatophores from <em>Rhodospirillum rubrum</em>, phosphorylations coupled with photosynthetic electron-transport systems have been investigated.</p></span></li><li><span>2.</span><span><p>2. Under illumination with white light at a fixed high intensity, the addition of a strictly limited concentration of phenazine methosulfate was required to induce photophosphorylation at a maximal rate. The maximal rate of photophosphorylation was always much faster when induced by phenazine methosulfate than when induced by the other reagents tested such as ascorbate or succinate. The ratio of maximal rate of the phenazine methosulfate-induced to ascorbate-induced photophosphorylation varied from batch to batch of chromatophore preparations with experimental values from 2 to 5.</p></span></li><li><span>3.</span><span><p>3. The phenazine methosulfate-induced, and ascorbate-induced photophosphorylations were inactivated in a similar manner by illumination of chromatophores with ultraviolet irradiation and by additions of the following inhibitors: Na₂SO₄, quinacrine hydrochloride, 2,4-dinitrophenol, dicumarol EDTA and phenylmercuric acetate. Chromatophore suspensions, if resonicated or heated, lost the activity of ascorbate-induced photophosphorylation somewhat more rapidly than that of phenazine methosulfate-induced photophosphorylation. In the presence of an appropriate concentration of <em>o</em>-phenanthroline, the ascorbate-induced and succinate-induced photophosphorylations were inactivated completely, but the phenazine methosulfate-induced photophosphorylation was not affected. With the chromatophores treated with an appropriate concentration of Triton X-100, the ascorbate-induced and succinate-induced photophosphorylations were inactivated completely, whereas the phenazine methosulfate-induced photophosphorylation was inactivated only partially.</p></span></li><li><span>4.</span><span><p>4. The photooxidations of cytochrome <em>c</em>₂, and cytochrome <em>c</em> were stimulated in rate by the addition of ADP. The stimulation by ADP was not significantly influenced in the presence or absence of P_i. The photooxidation was stimulated by 2,4-dinitrophenol in the absence but not in the presence of ADP. The concentraton of 2,4-dinitrophenol required for the stimulation was nearly identical with that required for the inhibition of photophosphorylation.</p></span></li><li><span>5.</span><span><p>5. ATP was synthesized from ADP and P_i, coupled with the photooxidations of cytochrome <em>c</em>₂, and cytochrome <em>c</em>. The values of the P/O ratio obtained were less than one.</p></span></li><li><span>6.</span><span><p>6. Based on these findings, the site for phosphorylation coupled with the photosynthetic electron-transport systems are suggested.</p></span></li></ul></div>","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":"88 2","pages":"Pages 237-250"},"PeriodicalIF":0.0,"publicationDate":"1964-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0926-6577(64)90180-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23800807","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}

{"title":"Influence of protamine on Na+, K+-dependent ATPase solubilized from brain microsome","authors":"Hiroshi Yoshida,&nbsp;Hisao Fujisawa,&nbsp;Yoshihiro Ohi","doi":"10.1016/0926-6577(64)90207-4","DOIUrl":"10.1016/0926-6577(64)90207-4","url":null,"abstract":"","PeriodicalId":100169,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects","volume":"88 2","pages":"Pages 455-458"},"PeriodicalIF":0.0,"publicationDate":"1964-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0926-6577(64)90207-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23802486","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}