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  • 1
    Electronic Resource
    Electronic Resource
    The induction of large unilamellar vesicle fusion by cationic polypeptides: the effects of mannitol, size, charge density and hydrophobicity of the cationic polypeptides
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 860 (1986), S. 314-324 
    Details
    ISSN: 0005-2736
    Keywords: Calcium ; Cationic polypeptide ; Charge density ; Mannitol ; Membrane fusion ; Polylysine
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2736(86)90528-6
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  • 2
    Electronic Resource
    Electronic Resource
    Conformational changes in human prothrombin as detected by antibody populations
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Protein Structure and Molecular 996 (1989), S. 95-102 
    Details
    ISSN: 0167-4838
    Keywords: (Human) ; Calcium ; Conformational change ; Prothrombin fragment 1
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0167-4838(89)90100-3
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  • 3
    Electronic Resource
    Electronic Resource
    Rhythmic dentinogenesis in the rabbit incisor: Allometric aspects (1980)
    Springer
    Calcified tissue international 32 (1980), S. 45-53 
    Details
    ISSN: 1432-0827
    Keywords: Dentin ; Periodicity ; Allometry ; Calcium ; Sulfur
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary We have described differences in the aspects of biological rhythms for calcium and sulfur deposition on the labial and lingual sides of the growing rabbit incisor, where growth occurs along a spiral axis. The calcium oscillations appear to be smoother on the labial side than on the lingual side. The lingual side is characterized by high-frequency rhythms with high amplitudes which possess the greatest percent of the power (Fourier analysis). These observations also reflect a difference in behavior of the mean Ca concentration across the labial and lingual sides. Sulfur rhythms on the labial side have higher amplitudes than those on the lingual side, but systematic differences in distribution of power between high and low frequencies is not as pronounced as in the case of Ca. The differences in Ca rhythms reflect differences in the growth rates of incisors on either side of the spiral axis. The labial side grows slightly faster than the lingual side, and its odontoblasts secrete Ca along the spiral axis and toward the pulp cavity at the same time. Thus the resultant direction of growth is more nearly opposite the extension of the occlusal end on the labial side, and Ca is consequently deposited over a wider area relative to that on the lingual surfaces. On the lingual side, Ca is deposited within a more limited area, and growth must therefore be continuous at high frequencies. The distribution of Ca on both sides of the tooth reflects these differences in growth rate and periodicity in two ways. First, given a unit area of tooth, the calcium concentration on the labial side is less than that of the lingual side. Second, whereas the calcium concentration on the labial side declines rapidly from the enamel-dentin junction to the pulp cavity, it is uniformly high across the lingual side because its growth is more continuous at high frequencies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02408520
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  • 4
    Electronic Resource
    Electronic Resource
    Rhythmic dentinogenesis in the rabbit incisor: Circadian, ultradian, and infradian periods (1980)
    Springer
    Calcified tissue international 32 (1980), S. 29-44 
    Details
    ISSN: 1432-0827
    Keywords: Rabbit ; Dentin ; Calcium ; Sulfur ; Periodicity ; Circadian ; Ultradian
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary We have identified a variety of biological rhythms involved in the apposition and mineralization of dentin in the rabbit incisor. Animals were injected during the day or night with lead acetate at 2-week intervals—to provide biological time markers in forming dentin—and transverse undecalcified sections of the lower incisors were prepared for electron microprobe analysis. The positions of the lead markers were identified, and the continuous distribution of calcium and sulfur was measured at 1 µm intervals between the markers. In thin sections stained with hematoxylin after decalcification, the widths of a series of structural increments (bands) were measured with an ocular micrometer. Fourier analysis of the data revealed spectra of structural and compositional rhythms with a range of periodicities which extended from a matter of hours [ultradian (〈24 h)] to days [infradian (〉24 h) and circadian (approximately 24 h)]. The structural and compositional rhythms appeared to be independent to the extent that they did not necessarily have the same periods, or amplitudes. Nor were there simple phase relationships between all of the rhythms. At some times, Ca and S fluctuations are inversely proportional (180° out of phase), but in other cases they are directly proportional or out of phase by varying degrees other than 180°. The analyses thus suggest that calcium and sulfur deposition (representing mineral and glycosaminoglycan deposition, respectively) are not simply inversely proportional, and that the hematoxylin-stained structural increments did not solely reflect differences in the distribution of the mineral components in dentin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02408519
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  • 5
    Electronic Resource
    Electronic Resource
    1,2,3-Tricarbonylverbindungen, XII. Konstitutionsermittlung der Reaktionsprodukte von Ninhydrin mit 2-Aminophenol bzw. 2-Aminothiophenol (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3954-3958 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1,2,3-Tricarbonyl Compounds, XII. Elucidation of the Constitution of the Reaction Products of Ninhydrin with 2-Aminophenol and 2-AminothiophenolNinhydrin (1) reacts with 2-aminophenol (2) and 2-aminothiophenol (6) to give products the constitutions of which were elucidated by means of the 1H- and 13C NMR spectra to be 10a-hydroxy-indeno[2,1-b]benz[1,4]oxazine-11(10aH)-one (3) and 10a-hydroxy-indeno[2,1-b]benz-[1,4]thiazine-11(10aH)-one (7), respectively. Structures mentioned in the literature are on the one hand corrected and on the other hand doubtless established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771101229
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  • 6
    Electronic Resource
    Electronic Resource
    Mikrobiologische Umwandlungen nichtsteroider Strukturen, V. Mikrobiologische Reaktionen von substituierten 1-Äthyl-4-oxo-1,4-dihydrochinolin-3-carbonsäuren (1973)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 2636-2642 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Microbiological Transformations of Nonsteroidal Structures, V. Microbiological Reactions of Substituted 1-Ethyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acids1-Ethyl-7-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (1) is transformed to the methyl ester by Streptomyces surinam. Penicillium adametzi hydroxylates the substrate at the 7-methyl substituent, whereas 1 -ethyl-8-methoxy-5-methyl-4-oxo- 1,4-dihydroquinoline-3-carboxylic acid (4) is hydrolyzed to the free phenol by the same fungi. l-Ethyl-4-oxo-1,4,6,7,8,9-hexahydrobenzo[g]quinolinc-3-carboxylic acid (6) is hydroxylated in 7 - and 8-position by Penicillium adametzi, in 6- and 7- (or 8-) position by Streptomyces achromogenes and in 6-position by Sporotrichum sulfurescens. 5-Ethyl-8-oxo-2,3,5,8-tetrahydrofuro[2,3-g]quinoline-7-carboxylic acid (10) undergoes only a hydrolytic cleavage of the dihydrofuranering.
    Notes: 1-Äthyl-7-methyl-4-oxo-1,4-dihydrochinolin-3-carbonsäure (1) wird durch Streptomyces surinam in den Methylester umgewandelt. Penicillium adametzi hydroxyliert das Substrat am 7-Methylsubstituenten, während bei der 1 -Äthyl-8-methoxy-5-methyl-4-oxo- 1, 4-dihydrochinolin-3-carbonsäure (4) mit dem gleichen Pilz nur eine Phenolätherspaltung eintritt. 1-Äthyl-4-oxo-l,4,6,7,8,9-hexahydrobenzo[g]chinolin-3-carbonsäure (6) wird von Penicillium adametzi in 7- und 8-, von Streptomyces achromogenes in 7-(oder 8-) und 6- sowie von Spororrichum sulfurescens in 6-Stellung hydroxyliert. 5-Äthyl-8-oxo-2,3,5,8-tetrahydrofuro[2,3-g]-chinolin-7-carbonsäure (10) zeigt nur eine hydrolytische Spaltung des Dihydrofuranringes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19731060827
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  • 7
    Electronic Resource
    Electronic Resource
    Mikrobiologische Umwandlungen nichtsteroider Strukturen. IX Mikrobiologische Hydroxylierung von Δ8-Tetrahydrocannabinol (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 3606-3614 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Microbiological Transformations of Nonsteroidal Structures, IX Microbiological Hydroxylation of Δ8TetrahydrocannabinolΔ8Tetrahydrocannabinol (5) is hydroxylated at the ring system and the side chain by fermentations with Pellicularia flilamentosa or Streptomyces lavendulae. P. filamentosa yields the compounds 7β,3′- (1) und 7β,4′-dihydroxy-Δ8-tetrahydrocannabinol (3) as well as 8β,9α-dihydroxy-(2a) und 8β,9α,4′-trihydroxy-6a,10a-trans-hexahydrocannabinol (4a), whereas S. lavendulae leads to 7α-hydroxy- (6), 7α,2′- (7), 7α,3′- (8), 7α4′-Dihydroxy-Δ8-tetrahydrocannabinol (9) und 4′-hydroxy-7-oxo-Δ8-tetrahydrocannabinol (10).
    Notes: Δ8Tetrahydrocannabinol (5) wird durch Fermentationen mit Pellicularia filamentosa oder Streptomyces lavendulae gleichzeitig am Ringsystem und in der Seitenkette hydroxyliert. P. filamentosa ergibt die Produkte 7β,3′- (1) und 7β,4′-Dihydroxy-Δ8-tetrahydrocannabinol (3) sowie 8β,9α-Dihydroxy-(2a) und 8β,9α,4′-Trihydroxy-6A,10a-trans-hexahydrocannabinol (4a), während S. lavendulae zu 7α-Hydroxy-(6), 7α,2′- (7), 7α,3′- (8), 7α4′-Dihydroxy-Δ8-tetrahydrocannabinol (9) und 4′-Hydroxy-7-oxo-Δ8-tetrahydrocannabinol (10) führt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761091114
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  • 8
    Electronic Resource
    Electronic Resource
    Mikrobiologische Umwandlung von Steroiden, XV: Mikrobiologische Hydroxylierung von 3α-Acetoxy-5β-pregnan-20-carbonsäure und deren Methylester mit Calonectria decora und Syncephalastrum racemosum (1978)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 2143-2151 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Microbial Transformations of Steroids, XV: Microbial Hydroxylation of 3α-Acetoxy-5β-pregnane-20-carboxylic Acid and of its Methyl Ester by Calonectria decora and Syncephalastrum racemosum3α-Acetoxy-5β-pregnane-20-carboxylic Acid (1) is hydroxylated by fermentation with Calonectria decora in 12β- (3), 7β,11β- (4), and 1β,12β-position (5) with hydrolysis of the 3-acetoxy group. The methyl ester 2 is attacked in 7α,12β- (6), 7β, 11α- (7), and 12β,15α-position (8), Syncephalastrum racemosum forms from 1 the hydroxy products in positions 11β (9), 12β (3), 7β,11β (4), and 11β,15β (10) as well as the further transformation products 3α-hydroxy- (13), 3α,11β-dihydroxy- (14), 3α,12β-dihydroxy-5β,20α-pregnane-20,18-carbolactone (11), and 11,18-epoxy-3α-hydroxy-5β,20α-pregnane-20,18-carbolactone (16), 1 is transformed by Mycobacterium smegmatis into methyl 3-oxo-pregnane- (18) and 3-oxo-1,4-pregnadiene-20-carboxylate (20).
    Notes: 3α-Acetoxy-5β-pregnan-20-carbonsäure (1) wird durch Fermentation mit Calonectria decora unter Verseifung der 3-Acetylgruppe in 12β- (3), 7β,11β- (4) und 1β,12β-Stellung (5) hydroxyliert. Der Methylester 2 wird analog in 7α,12β- (6), 7β,11α- (7) und 12β, 15α-Position (8) angegriffen. Syncephalastrum racemosum bildet aus 1 die Hydroxylierungsprodukte in den Positionen 11β (9), 12β (3), 7β,11β (4) und 11β,15β (10) sowie die weiteren Umwandlungsprodukte 3α-Hydroxy- (13), 3α,11β-Dihydroxy- (14), 3α,12β-Dihydroxy-5β,20α-pregnan-20,18-carbolacton (11) sowie 11,18-Expoxy-3α-hydroxy-5β,20α-pregnan-20,18-carbolacton (16). Durch Mycobacterium smegmatis wird 1 zu 3-Oxo-4-pregnen- (18) und 3-Oxo-1,4-pregnadien-20-carbonsäure-methylester (20) umgewandelt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19781110611
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  • 9
    Electronic Resource
    Electronic Resource
    Mikrobiologische Umwandlungen nichtsteroider Strukturen, III.I. und II. Mitteil.: H. Kosmol, K. Kieslich und H. Gihian, Liebigs Ann. Chem. 711, 38 bzw. 42 (1968). Hydroxylierung von 5-Alkyl-2-(benzolsulfonylamino)pyrimidinen und strukturverwandten Antidiabetika (1973)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 1290-1302 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Microbiological Transformations of Nonsteroidal Structures, III. Hydroxylation of 5-Alkyl-2-(benzenesulfonylamino)pyrimidines and Structurally Related Antidiabetics5-Alkyl-2-(arylsulfonylamino)pyrimidines (1-5 and 11-16) have been hydroxylated microbiologically Propyl, butyl, and isobutyl groups were hydroxylated at C-2, ethyl groups at C-1, isopropyl groups at C-1 and C-2, and neopentyl groups at C-3, respectively, by Streptomyces griseolus. The sulfonylurea part of the antidiabetics glibenclamid (25) and glisoxepid (29) was degradated to sulfonamide; in addition, hydroxyl groups were introduced into the 2- and 4-positions of the cyclohexane ring of 25.
    Notes: 5-Alkyl-2-(arylsulfonylamino)pyrimidine (1-5 und 11-16) wurden mikrobiologisch hydroxyliert. Mit Streptomyces griseolus wurden Propyl-, Butyl- und lsobutylgruppen an C-2, äthylgruppen an C-1, Isopropylgruppen an C-1 und C-2, sowie Neopentylgruppen an C-3 hydroxyliert. Die Antidiabetika Glibenclamid (25) und Glisoxepid (29) mit Sulfonylharnstoff-Struktur wurden zu Sulfonamiden abgebaut, ferner wurden in 2- und 4-Stellung des Cyclohexanrings von 25 Hydroxylgruppen eingeführt.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19731060426
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  • 10
    Electronic Resource
    Electronic Resource
    Über die Oxydationsgeschwindigkeit von Bromwasserstoff mittels Chromsäure in Gegenwart von Salzen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 177 (1929), S. 137-144 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291770116
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