• Antimicrobial Activity of Securamines From the Bryozoan Securiflustra securifrons 

      Østnes Hansen, Kine; Hansen, Ida Kristine Østnes; Richard, Céline Sarah Marine; Jenssen, Marte; Andersen, Jeanette Hammer; Hansen, Espen Holst (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-21)
      Natural products and their derivatives have served as powerful therapeutics against pathogenic microorganisms and are the mainstay of our currently available treatment options to combat infections. As part of our ongoing search for antimicrobial natural products from marine organisms, one fraction prepared from the Arctic marine bryozoan <i>Securiflustra securifrons</i> was found to be active against ...
    • Antimicrobial activity of small synthetic peptides based on the marine peptide turgencin A: Prediction of antimicrobial peptide sequences in a natural peptide and strategy for optimization of potency 

      Hansen, Ida Kristine Østnes; Lövdahl, Tomas; Simonovic, Danijela; Østnes Hansen, Kine; Andersen, Aaron John Christian; Devold, hege; Richard, Céline Sarah Marine; Andersen, Jeanette Hammer; Strøm, Morten B.; Haug, Tor (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-30)
      Turgencin A, a potent antimicrobial peptide isolated from the Arctic sea squirt <i>Synoicum turgens</i>, consists of 36 amino acid residues and three disulfide bridges, making it challenging to synthesize. The aim of the present study was to develop a truncated peptide with an antimicrobial drug lead potential based on turgencin A. The experiments consisted of: (1) sequence analysis and prediction ...
    • Isolation and characterization of antimicrobial peptides with unusual disulfide connectivity from the colonial ascidian Synoicum turgens 

      Hansen, Ida Kristine Østnes; Isaksson, Johan; Poth, Aaron G.; Østnes Hansen, Kine; Andersen, Aaron John Christian; Richard, Céline Sarah Marine; Blencke, Hans-Matti; Stensvåg, Klara; Craik, David J.; Haug, Tor (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-12)
      This study reports the isolation of two novel cysteine-rich antibacterial peptides, turgencin A and turgencin B, along with their oxidized derivatives, from the Arctic marine colonial ascidian <i>Synoicum turgens</i>. The peptides are post-translationally modified, containing six cysteines with an unusual disulfide connectivity of Cys<sup>1</sup>-Cys<sup>6</sup>, Cys<sup>2</sup>-Cys<sup>5</sup>, and ...
    • Isolation and Characterization of Antimicrobial Peptides with Unusual Disulfide Connectivity from the Colonial Ascidian Synoicum turgens 

      Hansen, Ida Kristine Østnes; Isaksson, Johan; Poth, Aaron G.; Østnes Hansen, Kine; Andersen, Aaron John Christian; Richard, Céline Sarah Marine; Blencke, Hans-Matti; Stensvåg, Klara; Craik, David J.; Haug, Tor (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-12)
      This study reports the isolation of two novel cysteine-rich antibacterial peptides, turgencin A and turgencin B, along with their oxidized derivatives, from the Arctic marine colonial ascidian <i>Synoicum turgens</i>. The peptides are post-translationally modified, containing six cysteines with an unusual disulfide connectivity of Cys<sup>1</i>-Cys<sup>6</sup>, Cys<sup>2</sup>-Cys<sup>5</sup>, and ...