A genetically modified prokaryotic cell which comprises: a cysteamine dioxygenase (ADO) polypeptide sequence which has at least 70% sequence coverage to SEQ 2, and at least 25% sequence identity to SEQ 2; and a vanin (VNN) polypeptide sequence selected from the group consisting of: a vanin-1 (VNN1) polypeptide sequence which has at least 70% sequence coverage to SEQ 4, and at least 25% sequence identity to SEQ 4; a vanin-2 (VNN2) polypeptide sequence which has at least 70% sequence coverage to SEQ 84, and at least 25% sequence identity to SEQ 84; and a vanin-3 (VNN3) polypeptide sequence which has at least 70% sequence coverage to SEQ 128 and at least 25% sequence identity to SEQ 128.

A genetically modified prokaryotic cell which comprises: a vanin (vnn) polynucleotide sequence selected from the group consisting of: vanin-1 (vnn1), wherein said vnn1 polynucleotide sequence has at least 70% sequence coverage to SEQ 3 or SEQ 98, and at least 70% sequence identity to SEQ 3 or SEQ 98; vanin-2 (vnn2), wherein said vnn2 polynucleotide sequence has at least 70% sequence coverage to SEQ 100, and at least 70% sequence identity to SEQ 100; and vanin-3 (vnn3), wherein said vnn3 polynucleotide sequence has at least 70% sequence coverage to SEQ 141, and at least 70% sequence identity to SEQ 141; or a cysteamine dioxygenase (ado) polynucleotide sequence which has at least 70% sequence coverage to SEQ 1, and at least 70% sequence identity to SEQ 1; and a flavin-containing monooxygenase 1 (fmol) polynucleotide sequence which has at least 70% sequence coverage to SEQ 5 or SEQ 99, and at least 70% of sequence identity to SEQ 5 or SEQ 99.

A method of producing an organosulfur compound from a prokaryotic cell wherein said method comprises the steps of: a. providing a live prokaryotic cell capable of expressing at least one gene for the production of said organosulfur compound; b. exposing said live prokaryotic cell to a culture media with a pH of between 4 and 11 containing a carbon source and a sulfur source thereby creating an incubation mixture; c. incubating said live prokaryotic cell in said incubation mixture under aerobic or anaerobic conditions at a temperature ranging from 0 C. to 60 C. for a period of time sufficient for the expression of said at least one gene for the production of said organosulfur compound; d. recovering said organosulfur compound from the bacterial cells and/or spent media; and e. optionally, re-exposing said live prokaryotic cell to an unused media or spent media for the continuous production of said organosulfur compound of interest.

A genetically modified prokaryotic cell comprising: at least one of the following: i. an addition, deletion and/or alteration of at least one gene to promote to taurine production; and ii. an addition, deletion and/or alteration of at least one gene related to taurine cellular transportation; and at least one of the following polynucleotide sequences: i. a vanin (vnn) polynucleotide sequence selected from the group consisting of: vanin-1 (vnn1), wherein said vnn1 polynucleotide sequence has at least 70% sequence coverage to SEQ 3 or SEQ 98, and at least 70% sequence identity to SEQ 3 or SEQ 98; vanin-2 (vnn2), wherein said vnn2 polynucleotide sequence has at least 70% sequence coverage to SEQ 100, and at least 70% sequence identity to SEQ 100; and vanin-3 (vnn3), wherein said vnn3 polynucleotide sequence has at least 70% sequence coverage to SEQ 141, and at least 70% sequence identity to SEQ 141; ii. a cysteamine dioxygenase (ado) polynucleotide sequence which has at least 70% sequence coverage to SEQ 1, and at least 70% sequence identity to SEQ 1; and iii. a flavin-containing monooxygenase 1 (fmo1) polynucleotide sequence which has at least 70% sequence coverage to SEQ 5 or SEQ 99, and at least 70% of sequence identity to SEQ 5 or SEQ 99.