TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Microorganism: Specifically, the isolated microorganism is an isolated, hydrogen producing microorganism comprising a 16S rDNA sequence fragment comprising SEQ ID NO. 1; or comprising a 16S rDNA sequence containing a sequence with more than 92% homology to SEQ ID NO. 1. Preferred Method: In producing molecular hydrogen, the conditions comprise an aqueous environment containing microgram amounts of added inorganic salts, e.g. iron, selenium, molybdenum, nickel and zinc, and/or milligram amounts of added sulfur-containing compounds, e.g. ammonium sulfate, N-acetyl cysteine, cysteine, and/or dithiothreitol. Alternatively, the conditions comprise an aqueous environment containing defined amounts of redox-active compounds and/or compounds with antioxidant chemical characteristics, such as ascorbic acid, N-acetyl cysteine, cysteine and/or glutathione. The conditions comprise a gas phase above an aqueous environment that is continuously flushed with defined amounts of a gas, e.g. the noble gas argon. The gas phase above the aqueous environment is flushed at defined time points with defined amounts of a gas, preferentially the noble gas argon. The conditions comprise an aqueous environment that is continuously bubbled with defined amounts of a gas, e.g. the noble gas argon; the conditions comprise an aqueous environment that is flushed at defined time points with defined amounts of a gas, e.g. the noble gas argon; the conditions comprise an environment maintained at a temperature below 45 degrees C; the conditions comprise an environment that is maintained at a constant pH of 4.5-7.5; or the conditions comprise a continuously supplied liquid feedstock derived from the group consisting of monosaccharides, disaccharides, polysaccharides, alcoholic sugars, amino acids, glycerol, fatty acids, and its combinations. The mono- and disaccharides are glucose, sucrose, maltose, cellobiose and/or other saccharides containing glucose units or its combination. The feedstock contains arabinose, xylose, galactose, and/or rhanumose, sorbitol and/ or mannitol or its combinations. Additionally, the conditions comprise generation of carbon dioxide which is chemically bound with the help of an alkali metal liquid matrix, such as sodium hydroxide (NaOH), and/or a solid matrix, e.g. soda lime. In mutagenizing the microorganism, the mutagen is UV or ionizing irradiation, a deaminating agent, an alkylating agent, sodium azide, an intercalating agent, or phage or transposon mediated mutagenesis, where the deaminating agent is nitrous acid, the alkylating agent is methyl-N-nitrosoguanidine (MNNG) and the intercalating agent is ethidium bromide. SPECIFIC SEQUENCES - Specifically claimed are Enterobacter sp. SGT 06-1 16S rDNA sequence and oligonucleotides comprising 20-670 bp (SEQ ID NO. 1-3). All sequences are fully defined in the specification. ggtaaagggtctatcatgcg (SEQ ID NO. 2) ccttcaccatacataatttgga (SEQ ID NO. 3)    EXAMPLE - No suitable example given.