Abstract: An object of the present invention is to obtain unsaturated polyester resin compositions for lamp reflectors and molded articles thereof, which have excellent coating properties in addition to excellent surface smoothness, dimensional accuracy, moldability, heat resistance and mechanical strength. The unsaturated polyester resin compositions comprise (a) an unsaturated polyester resin, (b) a diallyl phthalate monomer or prepolymer, (c) a radical polymeric unsaturated monomer other than the diallyl phthalate monomer, (d) a polystyrene and/or a styrene-vinyl acetate block copolymer, and (e) a styrene-diene block copolymer and/or hydrogenated or modified styrene-diene block copolymer. Further, the unsaturated polyester resin compositions comprise from 20 to 60 parts by weight of (b) and (c), and from 13 to 34 parts by weight of (d) and (e) based on 100 parts by weight of (a), (b), (c), (d) and (e), and the ratio by weight of (b) to (c) is 5:95 to 25:75, and the ratio by weight of (d) to (e) is 20:80 to 80:20.

Abstract: An object of the present invention is to obtain low specific gravity unsaturated polyester resin compositions for lamp reflectors and molded articles thereof, which have a low and invariant specific gravity, and excellent surface smoothness, heat resistance, rigidity, dimensional accuracy, moldability, etc. The compositions comprise from 40 to 210 parts by weight of an inorganic filler having an average particle size of at least 0.5 ?m and from 30 to 160 parts by weight of a hollow filler having a pressure resistance of at least 2,100×104 N/m2 of based on 100 parts by weight of an unsaturated polyester resin and a crosslinking agent wherein the addition ratio by weight of the inorganic filler to the hollow filler lies within a range of 2:8 to 8:2.

Abstract: An oligopeptide is prepared by use of a vector wherein DNA coding for the intended oligopeptide has been introduced into a plasmid including a leader gene and an alpha-amylase structural gene.

Abstract: This invention relates to DNA consisting of a DNA base sequence coding for the signal peptide: ##STR1## and to DNA containing said DNA base sequence. The DNA base sequence coding for said signal peptide includes, for example; ##STR2## The desired products in cells can be secreted out of cells by the use of a vector containing DNA consisting of the DNA base sequence coding for said signal peptide.

Abstract: This invention relates to DNA consisting of a DNA base sequence coding for the signal amino acid sequence:______________________________________ Met Phe Ala Lys Arg Phe Lys Thr Ser Leu Leu Pro Leu Phe Ala Gly Phe Leu Leu Leu Phe Tyr Leu Val Leu Ala Gly Pro Ala Ala Ala Ser Ala Glu Thr Ala Asn Lys Ser Asn Glu, ______________________________________and to DNA containing such a DNA base sequence. The DNA base sequence coding for said amino acid sequence includes, for example, ______________________________________ ATG TTT GCA AAA CGA TTC AAA ACC TCT TTA CTG CCG TTA TTC GCT GGA TTT TTA TTG CTG TTT TAT TTG GTT CTG GCA GGA CCG GCG GCT GCG AGT GCT GAA ACG GCG AAC AAA TCG AAT GAG. ______________________________________The desired products in cells can be secreted out of cells by the use of a vector containing DNA consisting of the DNA base sequence coding for said signal amino acid sequence.