
AbstractAcidianus Filamentous Virus 1 (AFV1), isolated from acidic hot springs, is an enveloped lipid‐containing archaeal filamentous virus with a linear double‐stranded DNA genome. It infects Acidianus, which is a hyperthermostable archaea growing at 85°C and acidic pHs, below pH 3. AFV1‐99, a protein of 99 amino acids of unknown function, has homologues in the archaeal virus families Lipothrixviridae and Rudiviridae. We determined the crystal structure of AFV1‐99 at 2.05 Å resolution. AFV1‐99 has a new fold, is hyperthermostable (up to 95°C) and resists to extreme pH (between pH 0 and 11) and to the combination of high temperature (95°C) and low pH (pH 0). It possesses characteristics of hyperthermostable proteins, such as a high content of charged residues.
[SDV.BBM.MN]Life Sciences [q-bio]/Biochemistry, [SDV.MP.VIR] Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Archaeal Viruses, Molecular Biology/Structural Biology [q-bio.BM], Molecular Biology/Molecular Networks [q-bio.MN], [SDV.BBM.BS] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Structural Biology [q-bio.BM], Protein Conformation, Temperature, Hydrogen-Ion Concentration, [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, Crystallography, X-Ray, [SDV.BBM.BS]Life Sciences [q-bio]/Biochemistry, Hot Springs, Molecular Biology/Molecular biology, Open Reading Frames, Viral Proteins, [SDV.BBM.MN] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular Networks [q-bio.MN], Amino Acid Substitution, [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Crystallization, Acidianus
[SDV.BBM.MN]Life Sciences [q-bio]/Biochemistry, [SDV.MP.VIR] Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Archaeal Viruses, Molecular Biology/Structural Biology [q-bio.BM], Molecular Biology/Molecular Networks [q-bio.MN], [SDV.BBM.BS] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Structural Biology [q-bio.BM], Protein Conformation, Temperature, Hydrogen-Ion Concentration, [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, Crystallography, X-Ray, [SDV.BBM.BS]Life Sciences [q-bio]/Biochemistry, Hot Springs, Molecular Biology/Molecular biology, Open Reading Frames, Viral Proteins, [SDV.BBM.MN] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular Networks [q-bio.MN], Amino Acid Substitution, [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Crystallization, Acidianus
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