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  • 1
    Electronic Resource
    Electronic Resource
    A comparative electrophoretic study of the seed albumins fromSophora microphylla andPisum sativum (Leguminosae) (1980)
    Springer
    Plant systematics and evolution 134 (1980), S. 207-214 
    Details
    ISSN: 1615-6110
    Keywords: Leguminosae ; Fabaceae ; Pisum sativum ; Sophora microphylla ; Storage proteins ; albumin electrophoresis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The albumin proteins from seed ofSophora microphylla Ait. and from cotyledons ofPisum sativum L. (cv. “Greenfeast”) have been analysed electrophoretically using a range of gels of varied pore size. Plots of mobility [as 100 log10 (R f × 100)] vs.acrylamide content of gel indicate that very few of the albumins fromS. microphylla are homologous with albumins fromP. sativum. Despite the diverse compositions of the two fractions, their amino acid analyses were surprisingly similar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00986800
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The seed proteins of chick pea: Comparative studies ofCicer arietinum, C. reticulatum andC. echinospermum (Leguminosae) (1983)
    Springer
    Plant systematics and evolution 142 (1983), S. 11-22 
    Details
    ISSN: 1615-6110
    Keywords: Leguminosae ; Papilionoideae ; Fabaceae ; Cicer ; Seed storage proteins ; electrophoresis ; chemosystematics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Seed proteins fromCicer arietinum L.,C. reticulatum Ladiz. andC. echinospermum Davis were extracted and separated into water soluble (albumin) and water insoluble (globulin) fractions. These were analysed using three polyacrylamide gel systems: uniform pore slab gels, gradient gels and SDS disc gels. For all three species, albumins constitute just over one-third of total protein. Minor differences in the composition of this fraction were observed. Within the globulin fraction, seven disulphide-linked polypeptides were found. Four of these resemble the major polypeptide of legumin, consisting of constant small subunit (21,000 daltons) linked to variable large subunit (46,000, 41,000, 39,000 or 36,000 daltons), forming polypeptides of 67,000 (I), 62,000 (II), 60,000 (III) and 57,000 (IV) daltons respectively. Polypeptide I was prominent in both wild species, but absent fromC. arietinum. Polypeptides II and III were equally prominent inC. arietinum andC. reticulatum. Polypeptide IV was more prominent inC. echinospermum, which was deficient in polypeptide III. Polypeptides V (45,000 daltons) and VI (43,000 daltons), apparently composed of two equal subunits, were present in trace amounts in both wild species, but well represented inC. arietinum Polypeptide VII of 45,000 daltons (31,000 + 14,000) was present in all three species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00989600
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Production and properties of mouse trisomy 15 ↔ diploid chimeras (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Developmental Genetics 4 (1983), S. 159-165 
    Details
    ISSN: 0192-253X
    Keywords: trisomy ; monosomy ; aneuploidy ; chimeras ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Mouse trisomy 15 ↔ 2n aggregation chimeras have been produced and analyzed at 19 days of gestation. We have found that these chimeras are viable and in most instances normal in external appearance, unlike trisomy (Ts)-15 embryos which are severely growthretarded and die midway through gestation. Trisomic cells were found in all tissues of fetal chimeras, with proportions not significantly different from those of the controls in kidney, heart, liver, and brain, but significantly reduced in thymus and spleen. Ts-15 cells do not, therefore, exhibit a proliferative advantage during fetal development of tissues susceptible to Ts-15-related lymphoid malignancies. However, the presence of Ts-15 cells in the placenta may be associated with placental overgrowth. One fetus containing a monosomy 3 cell population was also observed, the first term fetal chimera with monosomic cells that has been detected.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/dvg.1020040303
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  • 4
    Electronic Resource
    Electronic Resource
    A dedifferentiation-defective mutant of Dictyostelium that retains the capacity to aggregate in the absence of chemotaxis (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Developmental Genetics 4 (1983), S. 167-184 
    Details
    ISSN: 0192-253X
    Keywords: dedifferentiation ; Dictyostelium ; aggregation ; mutant ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: During slime mold development, cells acquire the capacity to rapidly recapitulate morphogenesis in roughly a tenth the original time. When developing cells are disaggregated and refed, they completely loss this capacity in a rapid and synchronous step referred to as the “erasure event.” The erasure event sets in motion a program of dedifferentiation during which developmentally acquired functions are lost at different times. In this report, we describe the phenotype of HI4, which is a mutant partially defective in the dedifferentiation program but normal in all aspects of growth, morphogenesis, and rapid recapitulation. HI4 cells progress through the erasure event, losing in a relatively normal fashion (I) the capacity to rapidly recapitulate later stages of morphogenesis, (2) the capacity to release a cAMP signal, and (3) the capacity to respond chemotactically to a cAMP signal. However, erased HI4 cells abnormally retain the capacity to rapidly reaggregate, even though they have lost chemotactic functions. Erased HI4 cells also abnormally retain EDTA-resistant cohesion (contact sites A) and the surface glycoprotein gp80. It appears that erased HI4 cells rapidly reaggregate owing to random collisions followed by tight cell cohesion.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/dvg.1020040304
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    Paper (German National Licenses)
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