NOVELTY - Producing a hydrocarbon comprises: either producing a polypeptide comprising amino acid sequence of SEQ ID NO: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34 or 36 (sequences not defined here may be found at ftp://ftp.wipo.int/pub/published_pct_sequences/publication) and/or its variant in a host cell and isolating the hydrocarbon from host cell; or producing a polypeptide comprising amino acid sequences having at least 70% identity to SEQ ID NO: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34 or 36, in a host cell and isolating the hydrocarbon from host cell.    USE - The method is useful to produce a hydrocarbon, preferably 13-21C alkane comprising tridecane, methyl tridecane, nonadecane, methyl nonadecane, heptadecane, methyl heptadecane, pentadecane and methyl pentadecane. The microorganism is useful to produce a hydrocarbon, where the microorganisms are cultured under conditions suitable for gene expression. The hydrocarbon is useful in a biofuel, preferably diesel, gasoline and jet fuel (all claimed).    ADVANTAGE - The method provides renewable hydrocarbon, which does not need to be explored, extracted, transported over long distances, or substantially refined like petroleum. The hydrocarbon is produced economically without creating the type of environmental damage produced by the petroleum industry and the burning of petroleum based fuels.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) a method for producing a hydrocarbon comprising either expressing a polynucleotide comprising a nucleotide sequence having at least 70% sequence identity to SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33 or 35 (sequences not defined here may be found at ftp://ftp.wipo.int/pub/published_pct_sequences/publication), in a host cell and isolating the hydrocarbon from the host cell, or transforming a host cell with a recombinant vector comprising a nucleotide sequence having at least 70% sequence identity to SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, or 35, and isolating the hydrocarbon from the host cell;    (2) a genetically engineered microorganism comprising an exogenous control sequence stably incorporated into the genomic DNA of the microorganism upstream of the polynucleotide, where the microorganism produces an increased level of a hydrocarbon relative to a wild-type microorganism;    (3) the hydrocarbon produced by the above method;    (4) a biofuel comprising the hydrocarbon;    (5) a method for producing a polypeptide comprising the amino acid sequence of (i) SEQ ID NO: 37, 38 or 39, (ii) SEQ ID NO: 40 and any one of SEQ ID NO: 37, 38 and 39, or (iii) SEQ ID NO: 41, 42, 43 or 44 in a host cell (sequences not defined here may be found at ftp://ftp.wipo.int/pub/published_pct_sequences/publication), where the polypeptide has decarbonylase activity;    (6) a method of making a hydrocarbon, comprising either contacting a substrate with the polypeptide comprising the amino acid sequence of SEQ ID NO: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34 or 36 and/or its variant, or the polypeptide encoded by the nucleotide sequence having at least 70% sequence identity to SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33 or 35 and/or its variant, or contacting a substrate with a polypeptide comprising the amino acid sequence of (i) SEQ ID NO: 37, 38 or 39, (ii) SEQ ID NO: 40 and any one of SEQ ID NO: 37, 38 or 39, or (iii) SEQ ID NO: 41, 42, 43 or 44;    (7) an isolated nucleic acid consisting of less than 500 or less than 90% of nucleotides of SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33 or 35; and    (8) an isolated polypeptide consisting of less than 200 or less than 90% of amino acids of SEQ ID NO: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, or 36.