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IGT Symp. Gas, Oil Coal, Environ. Biotechnol., 2nd, 1990, 83-104. Editors Akin et al. , Publisher: Inst. Gas. Technol., Chicago, IL.;  UniProt_03 Database Accession No. P29495 Apr. 1, 1993 from Ladror et al J Biol Chem. Sep. 5, 1991;266(25):16550-5. Alignment with SEQ ID No.: 6.;  Urakami et al., Occurrence of Isoprenoid Compounds in Gramnegative Methanol-, Methane-, and Methylamine-Utilizing Bacteria, J. Gen. Appl. Microbiol. 1986, 32(4), 317-41.;  Villadsen, J., Recent Trends Chem. React. Eng., (Proc. Int. Chem. React. Eng. Conf.), 2nd 1987, vol. 2, 320-333.EP1320579-B1  ALEXANDRA M ET AL: "CHARACTERIZATION AND PHYLOGENCY OF THE PFP GENE OF AMYCOLATOPSIS METHANOLICA ENCODING PPI-DEPENDENT PHOSPHOFRUCTOKINASE" JOURNAL OF BACTERIOLOGY, WASHINGTON, DC, US, vol. 178, no. 1, January 1996 (1996-01), pages 149-155, XP002935145 ISSN: 0021-9193;  DATABASE BIOSIS [Online] BIOSCIENCES INFORMATION SERVICE, PHILADELPHIA, PA, US; Acces. No. PREV198987130157, 1988 XP002195113 & SHISHKINA V N; TROTSENKO YU A : "EFFECT OF GLUCOSE ON THE GROWTH AND METABOLISM OF OBLIGATE METHANOTROPHS " MIKROBIOLOGIYA , vol. 57, no. 6, 1988, pages 917-923,;  DATABASE BIOSIS [Online] BIOSCIENCES INFORMATION SERVICE, PHILADELPHIA, PA, US; Acces. No. PREV199395078704, 1992 XP002195114 & BESCHASTNYI A P; SOKOLOV A P; KHMELENINA V N; TROTSENKO YU A : "Purification and properties of pyrophosphate-dependent phosphofructokinase of the obligate methanotrophic bacterium Methylomonas methanica. " BIOKHIMIYA , vol. 57, 1992, pages 1215-1221,WO200220728-A3  DATABASE BIOSIS [Online] BIOSCIENCES INFORMATION SERVICE, PHILADELPHIA, PA, US; Acces. No. PREV198987130157, 1988 XP002195113 & SHISHKINA V N; TROTSENKO YU A : "EFFECT OF GLUCOSE ON THE GROWTH AND METABOLISM OF OBLIGATE METHANOTROPHS " MIKROBIOLOGIYA , vol. 57, no. 6, 1988, pages 917-923,;  DATABASE BIOSIS [Online] BIOSCIENCES INFORMATION SERVICE, PHILADELPHIA, PA, US; Acces. No. PREV199395078704, 1992 XP002195114 & BESCHASTNYI A P; SOKOLOV A P; KHMELENINA V N; TROTSENKO YU A : "Purification and properties of pyrophosphate-dependent phosphofructokinase of the obligate methanotrophic bacterium Methylomonas methanica. " BIOKHIMIYA , vol. 57, 1992, pages 1215-1221,;  ALEXANDRA M ET AL: "CHARACTERIZATION AND PHYLOGENCY OF THE PFP GENE OF AMYCOLATOPSIS METHANOLICA ENCODING PPI-DEPENDENT PHOSPHOFRUCTOKINASE" JOURNAL OF BACTERIOLOGY, WASHINGTON, DC, US, vol. 178, no. 1, January 1996 (1996-01), pages 149-155, XP002935145 ISSN: 0021-9193;  See also references of EP 1320579A2