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Patterns of polypeptide synthesis in various maize organs under anaerobiosis (1980)

Okimoto, Ronald ; Sachs, Martin M. ; Porter, Elizabeth K. ; [et al.]

Springer

Planta 150 (1980), S. 89-94

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ISSN: 1432-2048

Keywords: Anaerobiosis ; Protein synthesis, organspecific ; Stress ; Zea

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract The pattern of protein synthesis was compared in several organs of maize (Zea mays L.) under aerobic and anaerobic conditions. Protein synthesis was measured by [35S]methionine incorporation and analysis by two-dimensional native-SDS (sodium lauryl sulfate) polyacrylamide gel electrophoresis and fluorography. The aerobic protein-synthesis profiles were very different for root, endosperm, scutellum and anther wall. However, except for some characteristic qualitative and quantitative differences, the patterns of protein synthesis during anaerobiosis were remarkably similar for these diverse organs and also for mesocotyl and coleoptile. The proteins synthesized were the anaerobic polypeptides (ANPs) which have been previously described in anaerobic roots of seedlings. Leaves exhibited no detectable protein synthesis under anaerobic conditions, and died after a short anaerobic treatment. Evidence is presented that the ANPs are not a generalized response to stress. This indicates that the ANPs are synthesized as a specific response to anaerobic conditions such as flooding.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00385619

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Synthesis and levels of organic phosphates in erythrocytes during avian development: Specific formation of BPG and IP5 in two distinct populations from young chicks (1984)

Ruiz-Ruano, A. ; Martin, M. ; Luque, J.

New York, NY [u.a.] : Wiley-Blackwell

Cell Biochemistry and Function 2 (1984), S. 257-262

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ISSN: 0263-6484

Keywords: Blood ; 2,3-bisphophoglycerate ; inositol-5-phosphate ; 2,3-bisphophoglycerate synthase ; phytase ; counter current distribution ; avian red cells ; Chemistry ; Biochemistry and Biotechnology

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology , Medicine

Notes: Two generations of red cells (embryonic and definitive), different types of haemoglobins, and special organic phosphates involved in the control of haemoglobin oxygenation (2:3-bisphosphoglycerate, BPG, and inositol-5-phosphate, IP5), have been found progressively during development of the chick. Levels of both organic phosphates, as well as activities of the enzymes involved in BPG synthesis (2:3-bisphosphoglycerate synthase, BPGM) and IP5 formation (phytase), were studied in the erythrocyte populations from embryo, young and adult chickens. Measurement of specific activities of BPGM and phytase in the two subpopulations present in young chickens showed that these phosphates could be specifically and predominantly formed in these two red cell populations.

Additional Material: 3 Ill.