Protein
Dimethlysulfonioproprionate lyase DddP
Organism
Roseovarius nubinhibens (strain ATCC BAA-591 / DSM 15170 / ISM)
Function
Able to cleave dimethlysulfonioproprionate (DMSP), releasing dimethyl sulfide (DMS). DMS is the principal form by which sulfur is transported from oceans to the atmosphere (PubMed:19220400, PubMed:20378650). The real activity of the protein is however subject to debate and it is unclear whether it constitutes a real dimethlysulfonioproprionate lyase in vivo: the low activity with DMSP as substrate suggests that DMSP is not its native substrate (PubMed:25140443).
Similarity
Belongs to the peptidase M24B family.
Sequence
MNQHYSETRKIDPSRGATLGDNTPNDNNRIEIGPTQLAFGEWATAGLALPDLQRMREFRWNRLTQAVVDRDYGGVLMFDPLNIRYATDSTNMQLWNAHNPFRALLVCADGYMVIWDYKNSPFLSTFNPLVREQRFGADLFYFDRGDKVDVAADAFSNEVRTLIAEHGGGNMRLAVDKIMLHGLRALEAQGFEIMEGEELTEKTRAIKGPDEILAMRCAVHACETSVAAMEHFAREAVPQGNTSEDDVWAVLHAENIKRGGEWIETRLLASGPRTNPWFQECGPRIIQNNEIISFDTDLIGSYGICVDISRSWWVGDAAPPADMVYAMQHAHEHIMTNMEMLKPGVTIPELSERSHRLDEQFQAQKYGCLMHGVGLCDEWPLVAYPDQAVPGSYDYPLEPGMVLCVEAAVGAVGGNFTIKLEDQVLITETGYENLTSYPFDPALMGR