PMC

(A) Comparison of HPLC analyses of butanol-extracted broths from S. natalensis wild-type (top) and ΔpimR (bottom) strains. Detection was carried out at A₃₀₄. (B) Typical chromophore UV-visible absorption spectrum of pimaricin and its structure.

Sequential discovery of ligands within the Tetrahymena ribozyme that position the catalytic metal ions. (A) The pro-S_P nonbridging oxygen of C208 coordinates M_A. (B) The pro-S_P nonbridging oxygen of C262 coordinates M_C. (C) Additional ligands for M_A include The pro-S_P nonbridging oxygens of A304 and A306.

X- and UV-radiation dose rates within the 96 wells of a microtiter plate. (A) The absorbance within each well was determined at 304 nm (A₃₀₄) in triplicate experiments using a chemical dosimeter and plotted. The rows (letters) and column (numbers) in the graph associate data with individual wells in the microtiter plate. The average dose rate for 160 kV X-rays was determined from (ΔA₃₀₄)(280 Gy min^-1) to be 17.96 Gy/min (sd = 0.02), and plates received a dose of 54 Gy. (B) A₄₉₂ values for resazurin absorbance (indicating the cellular metabolic activity within each well) were determined from 6 experiments using a bioassay. Plates received a UV radiation dose of 50 J m^-2. Bioassay A₄₉₂ values were averaged and plotted. The mean value over 96 wells was 0.77 (sd = 0.02) A₄₉₂ units.

Nucleotide sequence of the central portion of the 5`non-translated region of the hepatitis A virus between nucleotides 200 and 500. Horizontal lines indicate identical nucleotides between the individual strains and hepatitis A virus prototype (HAVPT). Vertical lines indicate positions where nucleotide changes occurred in the individual strains compared with HAVPT. FH cases were A10, A1, A413, A425, A502, A601, A204, A5, A206, A414, A165, and A205, respectively. AHs cases were A16, A159, A197, A811, A156, A196, A6, A200, A201, A702, A161, A302, and A160, respectively. AH cases were A141, A180, A404, A406, A713, A809, A819, A19, A39, A62, A168, A301, A304, A402, A711, A802, A814, A8, A32, A36, A38, A51, A55, A68, A303, A306, A407, A422, A424, A807, A816, A97, A157, A195, A207, A503, A9, A162, A707, A305, A307, A409, A75, A812, A7, A40, A65, A71, A80, A712, A93, A28, A20, A77, A85, A158, A423, A408, and A58, respectively.