Search for dissertations about: "Self-splicing introns"

Found 4 swedish dissertations containing the words Self-splicing introns.

  1. 1. Group I Introns and Homing Endonucleases in T-even-like Bacteriophages

    Author : Linus Sandegren; Britt-Marie Sjöberg; Renée Schroeder; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bacteriophage; Self-splicing introns; Homing endonucleases; Molecular biology; Molekylärbiologi;

    Abstract : Homing endonucleases are rare-cutting enzymes that cleave DNA at a site near their own location, preferentially in alleles lacking the homing endonuclease gene (HEG). By cleaving HEG-less alleles the homing endonuclease can mediate the transfer of its own gene to the cleaved site via a process called homing, involving double strand break repair. READ MORE

  2. 2. Analysis of regulatory RNA in accessory elements of Escherichia coli : antisense RNA control in plasmid R1 & self-splicing introns in bacteriophage T4

    Author : Marie Öhman; Stockholms universitet; []
    Keywords : ;

    Abstract : .... READ MORE

  3. 3. Structure and function studies on nrdB group I intron from bacteriophage T4

    Author : Ann-Sofie Sjögren; Gerhart Wagner; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; Molekylärbiologi; Molecular Biology; molekylärbiologi;

    Abstract : The nrdB gene of bacteriophage T4 contains a group I intron which is autocatalytic in water solutions containing salts. The group I intron self-splicing reaction consists of two consecutive transesterfication steps. The first step is the attack of an external guanosine on phosphor at the 5'-splice site. READ MORE

  4. 4. Mechanism Studies of Catalytic RNA, and RNA and DNA Model Compounds

    Author : Ethel Pettersson; Eric Westhof; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic Chemistry; organisk kemi;

    Abstract : This thesis describes mechanism studies of transesterifications of phosphate esters. The aim of the studies concerns two fields. First, the catalytic mechanism that group I introns use in self-splicing. The focus was on metal ion coordinating groups at the catalytic site. READ MORE