Abstract: The invention describes materials useful for calibrating methods, and standards, calibration verification, linearity, and quality control materials for any method used to detect lipids and/or lipoproteins. This invention describes methods for producing, and compositions produced thereby, stable lipid controls, standards, and reagents including a stabilizing amount of TDPA, and further including a known amount of a substantially pure constituent of interest, including total cholesterol (CHOL), triglycerides (TRIG), high density lipoprotein (HDL), APO lipoprotein A (APO-A), APO Lipoprotein B (APO-B), low density lipoprotein (LDL), apolipoprotein a Lp(a) and other lipoprotein moieties useful for calibrating, standardizing, verifying, quality control, and the like, relating to use of an instrument for assessing the level of such constituents in a sample.

Abstract: The enzyme, iron hydrogenase (HydA), has industrial applications for the production of hydrogen, specifically, for catalyzing the reversible reduction of protons to molecular hydrogen. The present invention relates to the isolation of a nucleic acid sequence from the algae Scenedesmus obliquus, Chlamydomonas reinhardtii and Chlorella fusca that encodes iron hydrogenase. The invention further discloses the genomic nucleic acid, c-DNA and the protein sequences for HydA. The genes and gene products may be used in a photosynthetic process for hydrogen production which includes growing a microorganism containing the gene coding for HydA in a culture medium under illuminated conditions sufficient to accumulate an endogenous substrate; depleting a nutrient selected from the group consisting of sulfur, iron, and manganese from the medium; then allowing the culture to become anaerobic by consumption of an endogenous or exogenous substrate in the light.

Abstract: The invention relates to materials useful for calibrating methods, and standards, calibration verification, linearity, and quality control materials for any method used to detect lipids and/or lipoproteins. This invention relates to methods for producing, and compositions produced thereby, stable lipid controls, standards, and reagents comprising a stabilizing amount of TDPA, and further comprising known amount of a substantially pure constituent of interest, including, inter alia, total cholesterol (CHOL), triglycerides (TRIG), high density lipoprotein (HDL), APO lipoprotein A (APO-A), APO Lipoprotein B (APO-B), low density lipoprotein (LDL), apolipoprotein a Lp(a) and other lipoprotein moieties useful for calibrating, standardizing, verifying, quality control, and the like, relating to use of an instrument for assessing the level of such constituent in a sample.

Abstract: The enzyme, iron hydrogenase (HydA), has industrial applications for the production of hydrogen, specifically, for catalyzing the reversible reduction of protons to molecular hydrogen. The present invention relates to the isolation of a nucleic acid sequence from the algae Scenedesmus obliquus, Chlamydomonas reinhardtii, and Chlorella fusca that encodes iron hydrogenase. The invention further discloses the genomic nucleic acid, c-DNA and the protein sequences for HydA. The genes and gene products may be used in a photosynthetic process for hydrogen production which includes growing a microorganism containing the gene coding for HydA in a culture medium under illuminated conditions sufficient to accumulate an endogenous substrate; depleting a nutrient selected from the group consisting of sulfur, iron, and manganese from the medium; then allowing the culture to become anaerobic by consumption of an endogenous or exogenous substrate in the light.