Comparative biochemistry and physiology最新文献_第10页

Comparative biochemistry of the primates— III. Imidazole metabolites in the blood and urine 灵长类动物的比较生物化学- 3。血液和尿液中的咪唑代谢物

Comparative biochemistry and physiology Pub Date : 1970-10-01 DOI: 10.1016/0010-406X(70)91037-6

Ivor Smith

引用次数: 0

Phenylalanine metabolism in cockroaches, Periplaneta americana: Tyrosine and benzoyl-β-glucoside biosynthesis 美洲大蠊苯丙氨酸代谢:酪氨酸和苯甲酰β-葡萄糖苷的生物合成

Comparative biochemistry and physiology Pub Date : 1970-10-01 DOI: 10.1016/0010-406X(70)91029-7

L.L. Murdock , T.L. Hopkins, R.A. Wirtz

{"title":"Phenylalanine metabolism in cockroaches, Periplaneta americana: Tyrosine and benzoyl-β-glucoside biosynthesis","authors":"L.L. Murdock , T.L. Hopkins, R.A. Wirtz","doi":"10.1016/0010-406X(70)91029-7","DOIUrl":"10.1016/0010-406X(70)91029-7","url":null,"abstract":"<div><ul><li>1.1. Teneral adult male cockroaches, Periplaneta americana, produced more 14CO2 from phenylalanine-1-14C than did the mature, fully tanned males. This would indicate utilization of phenylalanine-derived tyrosine for N-acetyl-dopamine biosynthesis during the time of cuticular sclerotization.</li><li>2.2. Tyrosine biosynthesis from phenylalanine occurred from ecdysis throughout adult life. Less tyrosine accumulated during the teneral period due to increased utilization for cuticular tanning.</li><li>3.3. A second major metabolite of phenylalanine was benzoic acid, most of which was conjugated as benzoyl-β-glucoside. The glucoside was not produced during the teneral period, suggesting changes in phenylalanine metabolism during ecdysis similar to those of tyrosine.</li><li>4.4. Phenylpyruvic acid-U-14C was rapidly metabolized to phenylalanine and tyrosine, indicating a transaminase in cockroach tissues with the equilibrium of transamination in the direction of the amino acid.</li></ul></div>","PeriodicalId":78189,"journal":{"name":"Comparative biochemistry and physiology","volume":"36 3","pages":"Pages 535-545"},"PeriodicalIF":0.0,"publicationDate":"1970-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-406X(70)91029-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81824343","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

Effect of antibiotics on carbohydrase activities of mouse small intestine 抗生素对小鼠小肠糖酶活性的影响

Comparative biochemistry and physiology Pub Date : 1970-10-01 DOI: 10.1016/0010-406X(70)91023-6

David S. Madge

引用次数: 8

Effects of hypoxia upon respiration and circulation in the dogfish Scyliorhinus stellaris 缺氧对星角鲨呼吸和循环的影响

Comparative biochemistry and physiology Pub Date : 1970-10-01 DOI: 10.1016/0010-406X(70)91027-3

J. Piiper, Doris Baumgarten, M. Meyer

引用次数: 59

DNA synthesis in the developing ovary of the housefly 家蝇卵巢发育中的DNA合成

Comparative biochemistry and physiology Pub Date : 1970-10-01 DOI: 10.1016/0010-406X(70)91031-5

Steve Miller, Jeanette M. Collins

{"title":"DNA synthesis in the developing ovary of the housefly","authors":"Steve Miller, Jeanette M. Collins","doi":"10.1016/0010-406X(70)91031-5","DOIUrl":"10.1016/0010-406X(70)91031-5","url":null,"abstract":"<div><ul><li>1.1. A method is described for the isolation of DNA from housefly ovaries where small quantities of the nucleic acid are present.</li><li>2.2. Contamination of DNA by residual protein was reduced by treatment with proase. All the DNA samples were essentially free of RNA, as indicated by the orcinol reaction.</li><li>3.3. The average molar base composition (40 per cent of guanine+cytosine) corresponds to Drosophila DNA, and the purine to pyrimidine ratio is close to unity, as would be expected for double stranded DNA.</li><li>4.4. The conversion of (2-14C) glycine to purines of DNA was used as a measure of the de novo biosynthetic route. Analysis of the DNA, after hydrolysis, demonstrated that the label is present in the purine and pyrimidine bases.</li><li>5.5. The specific activity is highest in the bases of DNA extracted from ovaries from 24-hr-old flies. The decrease in specific activity thereafter is due to the diluting effects in the de novo synthesis.</li></ul></div>","PeriodicalId":78189,"journal":{"name":"Comparative biochemistry and physiology","volume":"36 3","pages":"Pages 559-567"},"PeriodicalIF":0.0,"publicationDate":"1970-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-406X(70)91031-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"16556252","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: 9

[Causes of anodontia]. [牙齿缺陷的原因]。

Comparative biochemistry and physiology Pub Date : 1970-10-01

H Schienbein

引用次数: 0

Biochemistry of development of the insect Dacus oleae. Evolution of free amino acids 油桐昆虫发育的生物化学研究。游离氨基酸的演化

Comparative biochemistry and physiology Pub Date : 1970-10-01 DOI: 10.1016/0010-406X(70)91040-6

M. Garcia-Gracia, A.M. Municio

引用次数: 2

The water balance of Modiolus (Mollusca: Bivalvia: Mytilidae): Osmotic concentrations in changing salinities 软体动物(软体纲:双壳门:螺科)的水分平衡:盐度变化中的渗透浓度

Comparative biochemistry and physiology Pub Date : 1970-10-01 DOI: 10.1016/0010-406X(70)91028-5

Sidney K. Pierce Jr.

引用次数: 116

The glycopeptide pattern of the porcine (Sus domesticus) and rabbit (Oryctolagus caniculus domesticus) corneal stroma 猪(Sus驯化)和兔(Oryctolagus caniculus驯化)角膜基质的糖肽谱

Comparative biochemistry and physiology Pub Date : 1970-10-01 DOI: 10.1016/0010-406X(70)91030-3

E. Moczar , M. Moczar

引用次数: 8

Chemical composition of “fungus gardens” from two species of termites 两种白蚁“真菌园”的化学成分

Comparative biochemistry and physiology Pub Date : 1970-10-01 DOI: 10.1016/0010-406X(70)91025-X

S.H.W. Cmelik, Caroline C. Douglas

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引用次数: 12