Publications 2011

Akopyan K, Edgren T, Wang-Edgren H, Rosqvist R, Fahlgren A, Wolf-Watz H, Fällman M (2011) Translocation of surface-localized effectors in type III secretion. Proc Natl Acad Sci U S A 108: 1639-1644

Amer AAA, Ahlund MK, Bröms JE, Forsberg Å, Francis MS (2011) Impact of the N-Terminal Secretor Domain on YopD Translocator Function in Yersinia pseudotuberculosis Type III Secretion. Journal of Bacteriology 193: 6683-6700

Andersson H, Olsson R, Almqvist F (2011) Reactions between Grignard reagents and heterocyclic N-oxides: Stereoselective synthesis of substituted pyridines, piperidines, and piperazines. Organic & Biomolecular Chemistry 9: 337-346

Andersson IE, Andersson CD, Batsalova T, Dzhambazov B, Holmdahl R, Kihlberg J, Linusson A (2011) Design of Glycopeptides Used to Investigate Class II MHC Binding and T-Cell Responses Associated with Autoimmune Arthritis. Plos One 6: 14

Andersson IE, Batsalova T, Haag S, Dzhambazov B, Holmdahl R, Kihberg J, Linusson A (2011) (E)-Alkene and Ethylene Isosteres Substantially Alter the Hydrogen-Bonding Network in Class II MHC A(q)/Glycopeptide Complexes and Affect T-Cell Recognition. Journal of the American Chemical Society 133: 14368-14378

Aoki K, Benko M, Davison AJ, Echavarria M, Erdman DD, Harrach B, Kajon AE, Schnurr D, Wadell G (2011) Toward an integrated human adenovirus designation system that utilizes molecular and serological data and serves both clinical and fundamental virology. J Virol 85: 5703-5704

Aplander K, Marttila M, Manner S, Arnberg N, Sterner O, Ellervik U (2011) Molecular Wipes: Application to Epidemic Keratoconjuctivitis. J Med Chem 54: 6670-6675

Axner O, Andersson M, Bjoernham O, Castelain M, Klinth J, Koutris E, Schedin S (2011) Assessing Bacterial Adhesion on an Individual Adhesin and Single Pili Level Using Optical Tweezers. Bacterial Adhesion: Chemistry, Biology and Physics 715: 301-313

Basmarke-Wehelie R, Sjolinder H, Jurkowski W, Elofsson A, Arnqvist A, Engstrand L, Hagner M, Wallin E, Guan N, Kuranasekera H, Aro H, Jonsson AB (2011) The Complement Regulator CD46 Is Bactericidal to Helicobacter pylori and Blocks Urease Activity. Gastroenterology 141: 918-928

Bengtsson C, Almqvist F (2011) A Selective Intramolecular 5-exo-dig or 6-endo-dig Cyclization en Route to 2-Furanone or 2-Pyrone Containing Tricyclic Scaffolds. Journal of Organic Chemistry 76: 9817-9825

Berg L, Andersson CD, Artursson E, Hornberg A, Tunemalm AK, Linusson A, Ekstrom F (2011) Targeting Acetylcholinesterase: Identification of Chemical Leads by High Throughput Screening, Structure Determination and Molecular Modeling. Plos One 6: 12

Bianchi M, Niemiec MJ, Siler U, Urban CF, Reichenbach J (2011) Redundant ability of phagocytes to kill Aspergillus species Reply. Journal of Allergy and Clinical Immunology 128: 687-688

Bianchi M, Niemiec MJ, Siler U, Urban CF, Reichenbach J (2011). Restoration of anti-Aspergillus defense by neutrophil extracellular traps in human chronic granulomatous disease after gene therapy is calprotectin-dependent. J Allergy Clin Immunol 127: 1243-1252 e7

Bielig H, Rompikuntal PK, Dongre M, Zurek B, Lindmark B, Ramstedt M, Wai SN, Kufer TA (2011) NOD-Like Receptor Activation by Outer Membrane Vesicles from Vibrio cholerae Non-O1 Non-O139 Strains Is Modulated by the Quorum-Sensing Regulator HapR. Infection and Immunity 79: 1418-1427

Björkström NK, Lindgren T, Stoltz M, Fauriat C, Braun M, Evander M, Michaelsson J, Malmberg KJ, Klingström J, Ahlm C, Ljunggren HG (2011) Rapid expansion and long-term persistence of elevated NK cell numbers in humans infected with hantavirus. J Exp Med 208: 13-21

Broman T, Thelaus J, Andersson AC, Backman S, Wikström P, Larsson E, Granberg M, Karlsson L, Back E, Eliasson H, Mattsson R, Sjöstedt A, Forsman M (2011) Molecular Detection of Persistent Francisella tularensis Subspecies holarctica in Natural Waters. Int J Microbiol 2011

Bröms JE, Lavander M, Meyer L, Sjöstedt A (2011) IglG and IglI of the Francisella pathogenicity island are important virulence determinants of Francisella tularensis LVS. Infect Immun 79: 3683-3696

Bunikis I, Kutschan-Bunikis S, Bonde M, Bergström S (2011) Multiplex PCR as a tool for validating plasmid content of Borrelia burgdorferi. J Microbiol Methods 86: 243-247

Castelain M, Ehlers S, Klinth J, Lindberg S, Andersson M, Uhlin BE, Axner O (2011) Fast uncoiling kinetics of F1C pili expressed by uropathogenic Escherichia coli are revealed on a single pilus level using force-measuring optical tweezers. Eur Biophys J 40: 305-316

Comstedt P, Jakobsson T, Bergström S (2011) Global ecology and epidemiology of Borrelia garinii spirochetes. Infection ecology & epidemiology 1

Dahlström LA, Andersson K, Luostarinen T, Thoresen S, Ogmundsdottir H, Tryggvadottir L, Wiklund F, Skare GB, Eklund C, Sjolin K, Jellum E, Koskela P, Wadell G, Lehtinen M, Dillner J (2011) Prospective Seroepidemiologic Study of Human Papillomavirus and Other Risk Factors in Cervical Cancer. Cancer Epidemiology Biomarkers & Prevention 20: 2541-2550

Deem A, Keszthelyi A, Blackgrove T, Vayl A, Coffey B, Mathur R, Chabes A, Malkova A (2011) Break-Induced Replication Is Highly Inaccurate. Plos Biology 9: 14

Deltcheva E, Chylinski K, Sharma CM, Gonzales K, Chao Y, Pirzada ZA, Eckert MR, Vogel J, Charpentier E (2011) CRISPR RNA maturation by trans-encoded small RNA and host factor RNase III. Nature 471: 602-607

Doherty GJ, Ahlund MK, Howes MT, Moren B, Parton RG, McMahon HT, Lundmark R (2011) The endocytic protein GRAF1 is directed to cell-matrix adhesion sites and regulates cell spreading. Mol Biol Cell 22: 4380-4389

Dongre M, Uhlin BE, Wai SN (2011) Bacterial nanotubes for intimate sharing. Front Microbiol 2: 108

Egge-Jacobsen W, Salomonsson EN, Aas FE, Forslund AL, Winther-Larsen HC, Maier J, Macellaro A, Kuoppa K, Oyston PCF, Titball RW, Thomas RM, Forsberg Å, Prior JL, Koomey M (2011) O-Linked Glycosylation of the PilA Pilin Protein of Francisella tularensis: Identification of the Endogenous Protein-Targeting Oligosaccharyltransferase and Characterization of the Native Oligosaccharide. Journal of Bacteriology 193: 5487-5497

Eneslatt K, Rietz C, Ryden P, Stoven S, House RV, Wolfraim LA, Tarnvik A, Sjöstedt A (2011) Persistence of cell-mediated immunity three decades after vaccination with the live vaccine strain of Francisella tularensis. European Journal of Immunology 41: 974-980

Eriksson C, Kokkonen H, Johansson M, Hallmans G, Wadell G, Rantapaa-Dahlqvist S (2011) Autoantibodies predate the onset of systemic lupus erythematosus in northern Sweden. Arthritis Research & Therapy 13:R30: R30

Farto R, Milton DL, Bermudez MB, Nieto TP (2011) Colonization of turbot tissues by virulent and avirulent Aeromonas salmonicida subsp salmonicida strains during infection. Diseases of Aquatic Organisms 95: 167-173

Fei YY, Schmidt A, Bylund G, Johansson DX, Henriksson S, Lebrilla C, Solnick JV, Borén T, Zhu XD (2011) Use of Real-Time, Label-Free Analysis in Revealing Low-Affinity Binding to Blood Group Antigens by Helicobacter pylori. Analytical Chemistry 83: 6336-6341

Foltynowicz A, Silander I, Axner O (2011) Reduction of background signals in fiber-based NICE-OHMS. Journal of the Optical Society of America B-Optical Physics 28: 2797-2805

Fulton KM, Zhao X, Petit MD, Kilmury SLN, Wolfraim LA, House RV, Sjöstedt A, Twine SM (2011) Immunoproteomic analysis of the human antibody response to natural tularemia infection with Type A or Type B strains or LVS vaccination. International Journal of Medical Microbiology 301: 591-601

Hainzl T, Huang SH, Merilainen G, Brännström K, Sauer-Eriksson AE (2011) Structural basis of signal-sequence recognition by the signal recognition particle. Nature Structural & Molecular Biology 18: 389-391

Hassan OA, Ahlm C, Evander M (2011) Rift Valley Fever. A Need for a One Health Approach to Curb. Case Study from Sudan. EcoHealth 7: S138-S138

Hassan OA, Ahlm C, Sang R, Evander M (2011) The 2007 Rift Valley Fever Outbreak in Sudan. Plos Neglect Trop Dis 5: 7

Huang SH, Hainzl T, Grundström C, Forsman C, Samuelsson G, Sauer-Eriksson AE (2011) Structural Studies of beta-Carbonic Anhydrase from the Green Alga Coccomyxa: Inhibitor Complexes with Anions and Acetazolamide. Plos One 6: e28458

Ishijima N, Suzuki M, Ashida H, Ichikawa Y, Kanegae Y, Saito I, Borén T, Haas R, Sasakawa C, Mimuro H (2011) BabA-mediated Adherence Is a Potentiator of the Helicobacter pylori Type IV Secretion System Activity. Journal of Biological Chemistry 286: 25256-25264

Ito Y, Vela JL, Matsumura F, Hoshino H, Lee H, Kobayashi M, Bao X, Borén T, Jin R, Seeberger PH, Nakayama J, Kronenberg M, Fukuda M (2011) Immunological Functions of Cholesteryl alpha-glucosides in Helicobacter pylori-associated Inflammation. Glycobiology 21: 1485-1486

Johansson E, Speck C, Chabes A (2011) A top-down view on DNA replication and recombination from 9,000 feet above sea level. Genome Biol 12: 304

K O, Loizou C, Evander M, Mincheva-Nilsson L, G L (2011) Larynxpapillom i norra Sverige. Läkartidningen 108: 1187-1189

Kelk P, Abd H, Claesson R, Sandström G, Sjöstedt A, Johansson A (2011) Cellular and molecular response of human macrophages exposed to Aggregatibacter actinomycetemcomitans leukotoxin. Cell Death Dis 2: e126

Kluczynski P, Jahjah M, Naehle L, Axner O, Belahsene S, Fischer M, Koeth J, Rouillard Y, Westberg J, Vicet A, Lundqvist S (2011) Detection of acetylene impurities in ethylene and polyethylene manufacturing processes using tunable diode laser spectroscopy in the 3-mu m range. Applied Physics B-Lasers and Optics 105: 427-434

Kluczynski P, Lundqvist S, Westberg J, Axner O (2011) Faraday rotation spectrometer with sub-second response time for detection of nitric oxide using a cw DFB quantum cascade laser at 5.33 mu m. Applied Physics B-Lasers and Optics 103: 451-459

Kokkonen H, Mullazehi M, Berglin E, Hallmans G, Wadell G, Ronnelid J, Rantapaa-Dahlqvist S (2011) Antibodies of IgG, IgA and IgM isotypes against cyclic citrullinated peptide precede the development of rheumatoid arthritis. Arthritis Research & Therapy 13:R13: R13

Kumar D, Abdulovic AL, Viberg J, Nilsson AK, Kunkel TA, Chabes A (2011) Mechanisms of mutagenesis in vivo due to imbalanced dNTP pools. Nucleic Acids Research 39: 1360-1371

Kumru OS, Bunikis I, Sorokina I, Bergström S, Zuckert WR (2011) Specificity and Role of the Borrelia burgdorferi CtpA Protease in Outer Membrane Protein Processing. Journal of Bacteriology 193: 5759-5765

Lathdavong L, Shao J, Kluczynski P, Lundqvist S, Axner O (2011) Methodology for detection of carbon monoxide in hot, humid media by telecommunication distributed feedback laser-based tunable diode laser absorption spectrometry. Applied Optics 50: 2531-2550

Lenman A, Muller S, Nygren MI, Frangsmyr L, Stehle T, Arnberg N (2011) Coagulation Factor IX Mediates Serotype-Specific Binding of Species A Adenoviruses to Host Cells. Journal of Virology 85: 13420-13431

Lindgren H, Honn M, Salomonsson E, Kuoppa K, Forsberg Å, Sjöstedt A (2011) Iron Content Differs between Francisella tularensis Subspecies tularensis and Subspecies holarctica Strains and Correlates to Their Susceptibility to H2O2-Induced Killing. Infection and Immunity 79: 1218-1224

Lindgren T, Ahlm C, Mohamed N, Evander M, Ljunggren HG, Björkström NK (2011) Longitudinal Analysis of the Human T Cell Response during Acute Hantavirus Infection. Journal of Virology 85: 10252-10260

Lindström A, Edvinsson L, Johansson A, Andersson CD, Andersson IE, Raubacher F, Linusson A (2011) Postprocessing of Docked Protein-Ligand Complexes Using Implicit Solvation Models. Journal of Chemical Information and Modeling 51: 267-282

Liu JF, Obi IR, Thanikkal EJ, Kieselbach T, Francis MS (2011) Phosphorylated CpxR Restricts Production of the RovA Global Regulator in Yersinia pseudotuberculosis. Plos One 6: e23314

Luostarinen T, Dahlström LA, Andersson K, Ogmundsdottir H, Jellum E, Koskela P, Wadell G, Lehtinen M, Dillner J (2011) Human Papillomavirus, other sexually transmitted infections and risk of cervical cancer. A Nordic joint study. Journal of Epidemiology and Community Health 65: A266-A266

Lyszkiewicz M, Zietara N, Rohde M, Gekara NO, Jablonska J, Dittmar KE, Weiss S (2011) SIGN-R1(+)MHC II+ cells of the splenic marginal zone-a novel type of resident dendritic cells. Journal of Leukocyte Biology 89: 607-615

Makarova KS, Haft DH, Barrangou R, Brouns SJ, Charpentier E, Horvath P, Moineau S, Mojica FJ, Wolf YI, Yakunin AF, van der Oost J, Koonin EV (2011) Evolution and classification of the CRISPR-Cas systems. Nat Rev Microbiol 9: 467-477

Mansjo M, Johansson J (2011) The Riboflavin analog roseoflavin targets an FMN-riboswitch and blocks Listeria monocytogenes growth, but also stimulates virulence gene-expression and infection. RNA Biology 8: 674-680

Marcinowska R, Trygg J, Wolf-Watz H, Mortiz T, Surowiec I (2011) Optimization of a sample preparation method for the metabolomic analysis of clinically relevant bacteria. J Microbiol Methods 87: 24-31

Meinzer U, Barreau F, Jung C, Esmiol-Welterlin S, Berrebi D, Dussaillant M, Bonacorsi S, Wolf-Watz H, Perroy J, Ollendorff V, Hugot JP (2011) Yersinia Pseudotuberculosis Effector Yopj Subverts TAK1 and NOD2 Functions to Elicit Intestinal Barrier Dysfunction. Gastroenterology 140: S634-S634

Mistry N, Inoue H, Jamshidi F, Storm RJ, Oberste MS, Arnberg N (2011) Coxsackievirus A24 Variant Uses Sialic Acid-Containing O-Linked Glycoconjugates as Cellular Receptors on Human Ocular Cells. Journal of Virology 85: 11283-11290

Moore ME, Borén T, Solnick JV (2011) Life at the margins: modulation of attachment proteins in Helicobacter pylori. Gut microbes 2: 42-6

Näslund J, Kerner A, Drobni P, Bucht G, Evander M, Ahlm C (2011) Detection of Puumala and Rift Valley Fever virus by quantitative RT-PCR and virus viability tests in samples of blood dried and stored on filter paper. J Virol Methods 178: 186-190

Nilsson EC, Storm RJ, Bauer J, Johansson SMC, Lookene A, Ångström J, Hedenström M, Eriksson TL, Fängsmyr L, Rinaldi S, Willison HJ, Domellöf FP, Stehle T, Arnberg N (2011) The GD1a glycan is a cellular receptor for adenoviruses causing epidemic keratoconjunctivitis. Nature Medicine 17: 105-U279

Nylander A, Forsgren N, Persson K (2011) Structure of the C-terminal domain of the surface antigen SpaP from the caries pathogen Streptococcus mutans. Acta Crystallographica Section F-Structural Biology and Crystallization Communications 67: 23-26

Obi IR, Nordfelth R, Francis MS (2011) Varying dependency of periplasmic peptidylprolyl cis-trans isomerases in promoting Yersinia pseudotuberculosis stress tolerance and pathogenicity. Biochemical Journal 439: 321-332

Ohno T, Vallström A, Rugge M, Ota H, Graham DY, Arnqvist A, Yamaoka Y (2011) Effects of Blood Group Antigen-Binding Adhesin Expression during Helicobacter pylori Infection of Mongolian Gerbils. Journal of Infectious Diseases 203: 726-735

Olofsson K, Loizou C, Evander M, Mincheva-Nilsson L, Laurell G (2011) [A study of laryngeal papilloma in northern Sweden. Two cases of oncogenic HPV among 26 patients]. Lakartidningen 108: 1187-1189

Överby AK, Weber F (2011) Hiding from intracellular pattern recognition receptors, a passive strategy of flavivirus immune evasion. Virulence 2: 238-240

Persson K (2011) Crystallization of the fimbrial protein FimP from Actinomyces oris and of a triple Ile-to-Met mutant engineered to facilitate selenomethionine labelling. Acta Crystallographica Section F-Structural Biology and Crystallization Communications 67: 1207-1210

Persson K (2011) Structure of the sortase AcSrtC-1 from Actinomyces oris. Acta Crystallographica Section D-Biological Crystallography 67: 212-217

Pettersson L, Rasmuson J, Andersson C, Ahlm C, Evander M (2011) Hantavirus-Specific IgA in Saliva and Viral Antigen in the Parotid Gland in Patients With Hemorrhagic Fever With Renal Syndrome. J Med Virol 83: 864-870

Ramstedt M, Nakao R, Wai SN, Uhlin BE, Boily JF (2011) Monitoring surface chemical changes in the bacterial cell wall: multivariate analysis of cryo-x-ray photoelectron spectroscopy data. J Biol Chem 286: 12389-12396

Rasmuson J, Andersson C, Norrman E, Haney M, Evander M, Ahlm C (2011) Time to revise the paradigm of hantavirus syndromes? Hantavirus pulmonary syndrome caused by European hantavirus. European Journal of Clinical Microbiology & Infectious Diseases 30: 685-690

Rossmann MP, Luo WJ, Tsaponina O, Chabes A, Stillman B (2011) A Common Telomeric Gene Silencing Assay Is Affected by Nucleotide Metabolism. Molecular Cell 42: 127-136

Rzhepishevska O, Ekstrand-Hammarstrom B, Popp M, Bjorn E, Bucht A, Sjöstedt A, Antti H, Ramstedt M (2011) The Antibacterial Activity of Ga3+ Is Influenced by Ligand Complexation as Well as the Bacterial Carbon Source. Antimicrobial Agents and Chemotherapy 55: 5568-5580

Sachl R, Rosenbaum E, Sellstedt M, Almqvist F, Johansson LBA (2011) Locations and Reorientations of Multi-Ring-Fused 2-Pyridones in Ganglioside G(M1) Micelles. Langmuir 27: 1662-1667

Salomonsson EN, Forslund AL, Forsberg Å (2011) Type IV Pili in Francisella - A virulence trait in an intracellular pathogen. Front Microbiol 2: 29

Sellstedt M, Almqvist F (2011) A Three-Component Reaction Forming Naphthyridones - Synthesis of Lophocladine Analogs. Organic Letters 13: 5278-5281

Sjöstedt A (2011) Special topic on Francisella tularensis and tularemia. Frontiers in Microbiology 2: 86

Sjöström S, Hjalmars U, Juto P, Wadell G, Hallmans G, Tjonneland A, Halkjaer J, Manjer J, Almquist M, Melin BS (2011) Human immunoglobulin G levels of viruses and associated glioma risk. Cancer Causes & Control 22: 1259-1266

Sjowall J, Fryland L, Nordberg M, Sjogren F, Garpmo U, Jansson C, Carlsson SA, Bergström S, Ernerudh J, Nyman D, Forsberg P, Ekerfelt C (2011) Decreased Th1-Type Inflammatory Cytokine Expression in the Skin Is Associated with Persisting Symptoms after Treatment of Erythema Migrans. Plos One 6

Slepenkin A, Chu H, Elofsson M, Keyser P, Peterson EM (2011) Protection of Mice From a Chlamydia trachomatis Vaginal Infection Using a Salicylidene Acylhydrazide, a Potential Microbicide. Journal of Infectious Diseases 204: 1313-1320

Spjut S, Qian WX, Bauer J, Storm R, Frangsmyr L, Stehle T, Arnberg N, Elofsson M (2011) A Potent Trivalent Sialic Acid Inhibitor of Adenovirus Type 37 Infection of Human Corneal Cells. Angew Chem-Int Edit 50: 6519-6521

Stone JE, Kumar D, Binz SK, Inase A, Iwai S, Chabes A, Burgers PM, Kunkel TA (2011) Lesion bypass by S-cerevisiae Pol zeta alone. DNA Repair 10: 826-834

Tancred L, Telepnev MV, Golovliov I, Andersson B, Andersson H, Lindgren H, Sjöstedt A (2011) Administration of a nitric oxide donor inhibits mglA expression by intracellular Francisella tularensis and counteracts phagosomal escape and subversion of TNF-alpha secretion. Journal of Medical Microbiology 60: 1570-1583

Thorslund SE, Edgren T, Pettersson J, Nordfelth R, Sellin ME, Ivanova E, Francis MS, Isaksson EL, Wolf-Watz H, Fällman M (2011) The RACK1 Signaling Scaffold Protein Selectively Interacts with Yersinia pseudotuberculosis Virulence Function. Plos One 6: e16784

Tsaponina O, Barsoum E, Astrom SU, Chabes A (2011) Ixr1 Is Required for the Expression of the Ribonucleotide Reductase Rnr1 and Maintenance of dNTP Pools. PLoS genetics 7: e1002061

Verbruggen P, Ruf M, Blakqori G, Överby AK, Heidemann M, Eick D, Weber F (2011) Interferon Antagonist NSs of La Crosse Virus Triggers a DNA Damage Response-like Degradation of Transcribing RNA Polymerase II. Journal of Biological Chemistry 286: 3681-3692

Vethanayagam RR, Almyroudis NG, Grimm MJ, Lewandowski DC, Pham CT, Blackwell TS, Petraitiene R, Petraitis V, Walsh TJ, Urban CF, Segal BH (2011) Role of NADPH oxidase versus neutrophil proteases in antimicrobial host defense. PLoS One 6: e28149

Wang D, Zetterstrom CE, Gabrielsen M, Beckham KSH, Tree JJ, Macdonald SE, Byron O, Mitchell TJ, Gally DL, Herzyk P, Mahajan A, Uvell H, Burchmore R, Smith BO, Elofsson M, Roe AJ (2011) Identification of Bacterial Target Proteins for the Salicylidene Acylhydrazide Class of Virulence-blocking Compounds. Journal of Biological Chemistry 286: 29922-29931

Wang J, Ehlers P, Silander I, Axner O (2011) Dicke narrowing in the dispersion mode of detection and in noise-immune cavity-enhanced optical heterodyne molecular spectroscopy-theory and experimental verification. Journal of the Optical Society of America B-Optical Physics 28: 2390-2401

Weber B, Lindell K, El Qaidi S, Hjerde E, Willassen N-P, Milton DL (2011) The phosphotransferase VanU represses expression of four qrr genes antagonizing VanO-mediated quorum-sensing regulation in Vibrio anguillarum. Microbiol-Sgm 157: 3324-3339

Westberg J, Kluczynski P, Lundqvist S, Axner O (2011) Analytical expression for the nth Fourier coefficient of a modulated Lorentzian dispersion lineshape function. Journal of Quantitative Spectroscopy & Radiative Transfer 112: 1443-1449

Yin S, Davis RA, Shelper T, Sykes ML, Avery VM, Elofsson M, Sundin C, Quinn RJ (2011) Pseudoceramines A-D, new antibacterial bromotyrosine alkaloids from the marine sponge Pseudoceratina sp. Organic & Biomolecular Chemistry 9: 6755-6760