• Characterization of two cyclooxygenase genes in the coral Gersemia fruticosaJärving, Reet; Järving, Ivar; Kurg, Reet; Varvas, Külliki; Valmsen, Karin; Brash, Alan R.; Samel, Nigulas2nd Joint Symposium on "Plant Oxylipins" : June 12-14, 2003, Göttingen, Germany (invited lecture)2003 / ? p
• Cloning, expression and characterization of cyclooxygenase gene from amphipodsHansen, K.; Kurg, Reet; Varvas, Külliki; Valmsen, Karin; Järving, Ivar; Järving, Reet; Samel, NigulasFEBS journal2008 / Suppl. 1, p. 403
• Coral dioxygenases : comparison and contrast with other dioxygenasesSamel, Nigulas; Varvas, Külliki; Koljak, Reet; Valmsen, Karin; Järving, Ivar23rd Estonian Chemistry Days : abstracts of scientific conference1997 / p. 138
• A critical role of non-active site residues on cyclooxygenase helices 5 and 6 in the control of prostaglandin stereochemistry at carbon 15Valmsen, Karin; Boeglin, William E.; Järving, Reet; Järving, Ivar; Varvas, Külliki; Brash, Alan R.; Samel, NigulasThe journal of biological chemistry2007 / 38, p. 28157-28163 https://www.sciencedirect.com/science/article/pii/S0021925820587127
• Dioksügenaasid korallis Gersemia fruticosa : hapniku allikas, selektiivsete inhibiitorite toimeVarvas, Külliki; Järving, Ivar; Koljak, Reet; Valmsen, Karin; Müürisepp, Aleksander-Mati; Liiv, Milana; Samel, NigulasXXIII Eesti keemiapäevad : teaduskonverentsi ettekannete referaadid1997 / lk. 152
• Direct evidence of the cyclooxygenase pathway of prostaglandin synthesis in arthropods : genetic and biochemical charaterization of two crustacean cyclooxygenasesVarvas, Külliki; Kurg, Reet; Hansen, Kristella; Järving, Reet; Järving, Ivar; Valmsen, Karin; Lõhelaid, Helike; Samel, NigulasInsect biochemistry and molecular biology2009 / 12, p. 851-860 https://www.sciencedirect.com/science/article/pii/S0965174809001490
• Effect of selective inhibitors on arachidonic acid metabolism in the soft coral Gersemia fruticosaVarvas, Külliki; Järving, Ivar; Valmsen, Karin; Koljak, Reet; Samel, NigulasProstaglandins leukotrienes and essential fatty acids1996 / p. 82
• Endoperoxide pathway in prostaglandin biosynthesis in the soft coral Gersemia fruticosaVarvas, Külliki; Koljak, Reet; Järving, Ivar; Pehk, Tõnis; Samel, NigulasTetrahedron letters1994 / 44, p. 8267-8270
• Enzymatic oxidation of arachidonic acid in the coral Gersemia fruticosaVarvas, Külliki1999 http://www.ester.ee/record=b1273068*est
• Evidence of a cyclooxygenase-related prostaglandin synthesis in coralVarvas, Külliki; Järving, Ivar; Koljak, Reet; Valmsen, Karin; Brash, Alan R.; Samel, NigulasJournal of biological chemistry1999 / 15, p. 9923-9929
• Identification of a functional allene oxide synthase-lipoxygenase fusion protein in the soft coral Gersemia fruticosa suggests the generality of this pathway in octocoralsLõhelaid, Helike; Järving, Reet; Valmsen, Karin; Varvas, Külliki; Kreen, Malle; Järving, Ivar; Samel, NigulasBiochimica et biophysica acta2008 / 2, p. 315-321 https://www.sciencedirect.com/science/article/abs/pii/S030441650700253X
• Imetaja ja koralli tsüklooksügenaasi struktuurerinevusedValmsen, Karin; Koljak, Reet; Järving, Ivar; Varvas, Külliki; Samel, NigulasXXV Eesti keemiapäevad : teaduskonverentsi ettekannete referaadid = 25th Estonian Chemistry Days : abstracts of scientific conference1999 / lk. 188
• Isolation and characterization of the cDNA for prostaglandin endoperoxide synthase from the white sea soft coral Gersemia fruticosaKoljak, Reet; Varvas, Külliki; Järving, Ivar; Samel, Nigulas24th Estonian Chemistry Days : abstracts of scientific conference1998 / p. 29
• Korallide dioksügenaasid : võrdlus teiste dioksügenaasidegaSamel, Nigulas; Varvas, Külliki; Koljak, Reet; Valmsen, Karin; Järving, IvarXXIII Eesti keemiapäevad : teaduskonverentsi ettekannete referaadid1997 / lk. 127
• New cytotoxic sterols from the soft coral Gersemia fruticosaKoljak, Reet; Lopp, Annika; Pehk, Tõnis; Varvas, Külliki; Müürisepp, Aleksander-Mati; Järving, Ivar; Samel, NigulasTetrahedron1998 / p. 179-186
• Novel membrane-associated prostaglandin E synthase-2 from crustacean arthropodsHansen, Kristella; Varvas, Külliki; Järving, Ivar; Samel, NigulasComparative biochemistry and physiology. Part B, Biochemistry and molecular biology2014 / p. 45-52 : ill https://doi.org/10.1016/j.cbpb.2014.05.004 https://www.scopus.com/sourceid/17373 https://www.scopus.com/record/display.uri?eid=2-s2.0-84903517812&origin=inward&txGid=94efc35933fe20442431b8b914f7fa32 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=COMP%20BIOCHEM%20PHYS%20B&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000340311900007
• Oxidative metabolism of arachidonic acid in coral: definition of different cyclooxygenase and lipoxygenase pathwaysVarvas, Külliki; Järving, Ivar; Koljak, Reet; Valmsen, Karin; Samel, Nigulas24th Estonian Chemistry Days : abstracts of scientific conference1998 / p. 79
• PGG2 as a key intermediate in prostaglandin biosynthesis in the coral Gersemia fruticosaSamel, Nigulas; Varvas, Külliki; Koljak, Reet; Pehk, Tõnis; Järving, Ivar9th International Conference on Prostaglandins and Related Compounds, Florence, Italy, 1994 : abstract book1994 / p. 135
• Prostaglandiinide biosüntees korallidesSamel, Nigulas; Järving, Ivar; Varvas, Külliki; Koljak, Reet; Pehk, TõnisEesti Teaduste Akadeemia aastaaruanne 19941995 / lk. 54-55
• Prostaglandiinide biosüntees korallidesSamel, Nigulas; Varvas, Külliki; Koljak, Reet; Järving, Ivar; Pehk, TõnisXVI Eesti keemiapäevad : teaduskonverentsi ettekannete referaadid = 16th Estonian chemistry days : abstracts of scientific conference1995 / lk. 125-127
• Prostaglandiinide biosüntees punavetikatesVarvas, Külliki; Hansen, Kristella; Kasvandik, SergoXXXII Eesti Keemiapäevad : teaduskonverentsi teesid2011 / lk. 106
• Prostaglandin synthesis in marine arthropods and red algae = Prostaglandiinide süntees mere lülijalgsetes ja punavetikatesHansen, Kristella2015 https://www.ester.ee/record=b4442497*est
• Rekombinantse ACLE (algal cyclooxygenase like enzyme) ekspressioon, puhastamine ja kvaternaarstruktuuri analüüsKasvandik, Sergo; Varvas, Külliki; Samel, NigulasXXXI Eesti keemiapäevad : [28. aprill 2010, Tallinn] : teaduskonverentsi teesid = 31st Estonian Chemistry Days : abstracts of scientific conference2010 / lk. 39
• Structural and catalytic insights into the algal prostaglandin H synthase reveal atypical features of the first non-animal cyclooxygenaseVarvas, Külliki; Kasvandik, Sergo; Hansen, Kristella; Järving, Ivar; Morell, Indrek; Samel, NigulasBiochimica et biophysica acta : molecular and cell biology of lipids2013 / p. 863-871 : ill https://doi.org/10.1016/j.bbalip.2012.11.010 https://www.scopus.com/sourceid/16831 https://www.scopus.com/record/display.uri?eid=2-s2.0-84873726287&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.1016%2Fj.bbalip.2012.11.010%29&sessionSearchId=225678e0ce9a8f1e46110ae409abc09f&relpos=0 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=BBA-MOL%20CELL%20BIOL%20L&year=2013 https://www.webofscience.com/wos/woscc/full-record/WOS:000316438200020
• Structural and functional comparison of 15S- and 15R-specific cyclooxygenases from the coral Plexaura homomallaValmsen, Karin; Boeglin, William E.; Järving, Ivar; Schneider, Claus; Varvas, Külliki; Brash, Alan R.; Samel, NigulasEur. J. Biochem.2004 / p. 3533-3538 : ill https://febs.onlinelibrary.wiley.com/doi/full/10.1111/j.0014-2956.2004.04289.x
• Teaduspreemia keemia ja molekulaarbioloogia alal tööde tsükli "Prostaglandiinide biosüntees selgrootutes" eest : Nigulas Samel (kollektiivi juht), Ivar Järving, Reet Koljak, Karin Valmsen, Külliki VarvasSamel, Nigulas; Järving, Ivar; Koljak, Reet; Valmsen, Karin; Varvas, KüllikiEesti Vabariigi teaduspreemiad 20022002 / lk. 30-40 : portr., ill
• The basis of prostaglandin synthesis in coral : molecular cloning and expression of a cyclooxygenase from the arctic soft coral Gersemia fruticosaKoljak, Reet; Järving, Ivar; Kurg, Reet; Boeglin, William E.; Varvas, Külliki; Valmsen, Karin; Ustav, Mart; Brash, Alan R.; Samel, NigulasJournal of biological chemistry2001 / 10, p. 7033-7040 : ill
• The dioxygenases in the soft coral Gersemia fruticosa : origin of the oxygen, the eff[e]ct of selective inhibitorsVarvas, Külliki; Järving, Ivar; Koljak, Reet; Valmsen, Karin; Müürisepp, Aleksander-Mati; Liiv, Milana; Samel, Nigulas23rd Estonian Chemistry Days : abstracts of scientific conference1997 / p. 160
• The origin of 15R-prostaglandins in the Caribbean coral Plexaura homomalla : molecular cloning and expression of a novel cyclooxygenaseValmsen, Karin; Järving, Ivar; Boeglin, William E.; Varvas, Külliki; Koljak, Reet; Pehk, Tõnis; Brash, Alan R.; Samel, NigulasProceedings of the National Academy of Sciences of the United States of America2001 / 14, p. 7700-7705 https://www.pnas.org/doi/full/10.1073/pnas.131022398
• Tsüklooksügenaas kirpvähilistest : kloneerimine, ekspresseerimine ja iseloomustamineHansen, K.; Kurg, Reet; Varvas, Külliki; Järving, Ivar; Järving, Reet; Valmsen, Karin; Samel, NigulasXXX Eesti keemiapäevad : teaduskonverentsi teesid = 30th Estonian Chemistry Days : abstracts of scientific conference2007 / lk. 30-31
• Uued tsütotoksilised steroidid korallist Gersemia fruticosa = New cytotoxic sterols from the soft coral Gersemia fruticosaKoljak, Reet; Lopp, Annika; Pehk, Tõnis; Varvas, Külliki; Järving, Ivar; Samel, NigulasXVII Eesti keemiapäevad : teaduskonverentsi ettekannete referaadid = 17th Estonian Chemistry Days : abstracts of scientific conference1996 / lk. 81-82 https://www.ester.ee/record=b1070511*est
• Uus 8-lipoksügenaas korallist Gersemia fruticosaLõhelaid, Helike; Mortimer, Monika; Järving, Reet; Varvas, Külliki; Samel, Nigulas; Järving, IvarXXVIII Eesti keemiapäevad : teaduskonverentsi ettekannete teesid = 28th Estonian Chemistry Days : abstracts of scientific conference2002 / lk. 81-82