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  • 1
    ISSN: 1573-4927
    Schlagwort(e): HUMAN NEURONAL PROTEIN 17.3 ; MOUSE NP15.6 ; CDNA CLONING ; TISSUE EXPRESSIONAL ; CHARACTERIZATION
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract A full-length cDNA of 595 bp was isolated froma human fetal brain cDNA library. It contains an openreading frame encoding 153 amino acids, with an 18-bp5′UTR and a 118-bp 3′UTR in which there isan atypicalpolyadenylation signal (ATTAAA). The calculatedmolecular weight of the deduced protein is 17.3 kU. Thepredicted isoelectric point is 4.89. On account of itshigh homology to mouse neuronal protein NP15.6(81.2% identity), the deduced protein was namedneuronal protein 17.3 (NP17.3). When its secondarystructure was examined by the GGBSM program of PCGENEsoftware, it was found that 32.6 and 15.0% of itsamino acids are involved in formingalpha-helices and beta-sheets, respectively. Examinedwith the PESTFIND program, a typical PEST region foundin rapidly degraded proteins was found between residue48and residue 68.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1617-4623
    Schlagwort(e): Sex and male sterility differentiation ; Phytohormones ; Homologous/heterologous hybridizations ; Organ specificity/sexual genotype
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Sequences specifically transcribed in each sex type of Mercurialis annua have been demonstrated by comparative analysis of their poly(A)+ RNA populations (homologous and heterologous hybridizations). A comparison of the curves for fertile male genotype cDNAs/fertile male genotype poly(A)+ RNAs and fertile male cDNAs/female genotype poly(A)+ RNAs clearly demonstrates that the staminate flowers of fertile male plants have 6.5% specific sequences without counterpart in poly(A)+ RNAs of the pistillate flowers of female genotypes. The poly(A)+ population of genetic females is composed primarily of amplified male transcripts [female cDNAs/male poly(A)+ RNAs, 100% hybridizations with the homologous curve of female cDNAs/female poly(A)+ RNAs]. Cytokinin reproduces the amplification of male transcripts in the course of artificial feminization of genetically male individuals and exogenous benzylaminopurine induces sequences specific for feminization. The poly(A)+ RNAs of the constructed sterile male strain and the restored fertile male strain present 11.5% and 9.0% specificity, respectively, with reference to staminate flowers of fertile males [sterile or restored fertile male cDNAs/fertile male poly(A)+ RNAs]. The existence of differential sequences even in identical organs (stamens in normal genetic male plants or restored fertile male strain, pistils in normal genetic females or constructed females bearing male sterility determinants) is clearly demonstrated and correlated with the determinant genotype of these sex types and with the hormones they contain.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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