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  • Insect globin genes  (1)
  • Paenibacillus (Bacillus) macerans  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Sequence and evolution of the gene for the monomeric globin I and its linkage to genes coding for dimeric globins in the insect Chironomus thummi (1995)
    Springer
    Journal of molecular evolution 40 (1995), S. 354-361 
    Details
    ISSN: 1432-1432
    Schlagwort(e): Insect globin genes ; Molecular evolution ; Alleles ; In situ hybridization
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract We isolated genomic clones containing sequences encoding globins I and IA from a Chironomus thummi thummi genomic library. Three clones contain globin IA (ctt-1A) genes, while one contains a globin I (ctt-1) gene. The coding regions of the four genes are identical except for the single base substitution accounting for the globin I/IA polymorphism. The noncoding DNA flanking the coding region is more than 98% similar, confirming a previous hypothesis that the globin ctt-1 and ctt-1A genes are alleles. Hemoglobins I and IA are monomeric in the insect hemolymph. Earlier in situ hybridization studies suggested that monomeric and dimeric globin genes are clustered at different chromosomal loci. In situ hybridization of ctt-1 DNA to polytene salivary gland chromosomes places the ctt-1 gene on the same band as genes for the dimeric globins IIβ and VIIB, forcing revision of the earlier hypothesis that genes for monomeric and dimeric globin genes are at different loci. The evolution of the ctt-1 and ctt-1A alleles and of the two globin gene loci are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00164021
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 2
    Digitale Medien
    Digitale Medien
    Expression of the succinate dehydrogenase genes (sdhCAB) from the facultatively anaerobic Paenibacillus macerans during aerobic growth (1998)
    Springer
    Archives of microbiology 170 (1998), S. 304-308 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Key words Succinate dehydrogenase ; sdhCAB genes ; Fumarate reductase ; Menaquinone ; Paenibacillus (Bacillus) macerans
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Paenibacillus (formerly Bacillus) macerans is capable of succinate oxidation under oxic conditions and fumarate reduction under anoxic conditions. The reactions are catalyzed by different enzymes, succinate dehydrogenase (Sdh) and fumarate reductase (Frd). The genes encoding Sdh (sdhCAB) were analyzed. The gene products of sdhA and sdhB were similar to the subunits of known Sdh and Frd enzymes. The hydrophobic subunit SdhC showed close sequence similarity to the class of Sdh/Frd enzymes containing diheme cytochrome b. From the sdhCAB gene cluster two transcripts were produced, one comprising sdhCAB, the other sdhAB. The transcripts were found only during aerobic growth, and the amount was directly proportional to Sdh activity, but inversely proportional to Frd activity.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002030050646
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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