A recombinant microbial cell comprising: (a) polynucleotides encoding polypeptides having enzymatic activity effective to produce an increased amount of propionyl-CoA in the recombinant microbial cell relative to the amount of propionyl-CoA produced in a parental microbial cell lacking or having a reduced amount of said enzymatic activity, wherein at least one of said polypeptides is exogenous to the recombinant microbial cell or wherein expression of at least one of said polynucleotides is modulated by overexpression in the recombinant microbial cell as compared to the expression of the polynucleotides in the parental microbial cell, and wherein said polynucleotides encode: (i) a polypeptide having -citramalate synthase activity, a polypeptide having isopropylmalate isomerase activity, and a polypeptide having beta-isopropylmalate dehydrogenase activity; and/or (ii) a polypeptide having aspartokinase activity, a polypeptide having homoserine dehydrogenase activity, a polypeptide having homoserine kinase activity, a polypeptide having threonine synthase activity, and a polypeptide having threonine deaminase activity; (b) a polynucleotide encoding a polypeptide having β-ketoacyl-ACP synthase activity that utilizes propionyl-CoA as a substrate, and (c) one or more polynucleotides encoding one or more polypeptides having fatty acid derivative enzyme activity, wherein the recombinant microbial cell produces a fatty acid derivative composition comprising odd chain fatty acid derivatives when cultured in the presence of a carbon source under conditions effective to express the polynucleotides according to (a), (b), and (c), and wherein at least 10% of the fatty acid derivatives in the fatty acid derivative composition are odd chain fatty acid derivatives. (a) polynucleotides encoding polypeptides having enzymatic activity effective to produce an increased amount of propionyl-CoA in the recombinant microbial cell relative to the amount of propionyl-CoA produced in a parental microbial cell lacking or having a reduced amount of said enzymatic activity, wherein at least one of said polypeptides is exogenous to the recombinant microbial cell or wherein expression of at least one of said polynucleotides is modulated by overexpression in the recombinant microbial cell as compared to the expression of the polynucleotides in the parental microbial cell, and wherein said polynucleotides encode: (i) a polypeptide having -citramalate synthase activity, a polypeptide having isopropylmalate isomerase activity, and a polypeptide having beta-isopropylmalate dehydrogenase activity; and/or (ii) a polypeptide having aspartokinase activity, a polypeptide having homoserine dehydrogenase activity, a polypeptide having homoserine kinase activity, a polypeptide having threonine synthase activity, and a polypeptide having threonine deaminase activity; wherein at least one of said polypeptides is exogenous to the recombinant microbial cell or wherein expression of at least one of said polynucleotides is modulated by overexpression in the recombinant microbial cell as compared to the expression of the polynucleotides in the parental microbial cell, and wherein said polynucleotides encode: (i) a polypeptide having -citramalate synthase activity, a polypeptide having isopropylmalate isomerase activity, and a polypeptide having beta-isopropylmalate dehydrogenase activity; and/or (ii) a polypeptide having aspartokinase activity, a polypeptide having homoserine dehydrogenase activity, a polypeptide having homoserine kinase activity, a polypeptide having threonine synthase activity, and a polypeptide having threonine deaminase activity; (i) a polypeptide having -citramalate synthase activity, a polypeptide having isopropylmalate isomerase activity, and a polypeptide having beta-isopropylmalate dehydrogenase activity; and/or (ii) a polypeptide having aspartokinase activity, a polypeptide having homoserine dehydrogenase activity, a polypeptide having homoserine kinase activity, a polypeptide having threonine synthase activity, and a polypeptide having threonine deaminase activity; (b) a polynucleotide encoding a polypeptide having β-ketoacyl-ACP synthase activity that utilizes propionyl-CoA as a substrate, and (c) one or more polynucleotides encoding one or more polypeptides having fatty acid derivative enzyme activity, wherein the recombinant microbial cell produces a fatty acid derivative composition comprising odd chain fatty acid derivatives when cultured in the presence of a carbon source under conditions effective to express the polynucleotides according to (a), (b), and (c), and wherein at least 10% of the fatty acid derivatives in the fatty acid derivative composition are odd chain fatty acid derivatives. wherein the recombinant microbial cell produces a fatty acid derivative composition comprising odd chain fatty acid derivatives when cultured in the presence of a carbon source under conditions effective to express the polynucleotides according to (a), (b), and (c), and wherein at least 10% of the fatty acid derivatives in the fatty acid derivative composition are odd chain fatty acid derivatives.