>pfam02679 ComA (2R)-phospho-3-sulfolactate synthase (ComA). In methanobacteria (2R)-phospho-3-sulfolactate synthase (ComA) catalyses the first step of the biosynthesis of coenzyme M from phosphoenolpyruvate (P-enolpyruvate). This novel enzyme catalyses the stereospecific Michael addition of sulfite to P-enolpyruvate, forming L-2-phospho-3-sulfolactate (PSL). It is suggested that the ComA-catalysed reaction is analogous to those reactions catalysed by beta-elimination enzymes that proceed through an enolate intermediate.

Probab=90.34 E-value=0.85 Score=26.01 Aligned_cols=169 Identities=14% Similarity=0.169 Sum_probs=93.1 Q ss_pred HHHCCCCEEEEECCCHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHCCCCCCCEECCCCCCCCCCCCC Q ss_conf 99869989999167987789999999855723321124454433446788998853100133321004467755332211 Q gi|254780215|r 25 AHQANVLKMIAIAIKVKDFVPLIKLCQDYPSSIFCSVGTHPCHAHEENEVLVDELVCLASHPRVVAIGETGLDRYHNAHT 104 (262) Q Consensus 25 a~~~gv~~~i~~~~~~~~~~~~~~l~~~~p~~i~~a~GiHP~~~~~~~~~~~~~l~~l~~~~~~~aIGEiGLD~~~~~~~ 104 (262) T Consensus 10 PR~~GlT~v~D~gl~~~~~eD~Le~~g~yID~~K~g~gt~~----l~p~~~l~eKI~l~~~~~V--------~v~~GGtl 77 (245) T pfam02679 10 PRRTGLTMVLDKGLGPRFLEDLLESAGDYIDFLKFGWGTSA----LMPEDILKEKIDLAHEHGV--------YVYTGGTL 77 (245) T ss_pred CCCCCCEEEECCCCCHHHHHHHHHHHHHHEEEEEECCCEEE----ECCHHHHHHHHHHHHHCCC--------EEECCCHH T ss_conf 85568269944999989999999861333358997687650----1788999999999998599--------48479699 Q ss_pred C--HHHHHHHHHHHHHHHHCCCCCEEECHHH----HHHHHHHHHHHHHCCCCCCCC--EE----------CCCCHHHHHH Q ss_conf 1--0246789999876642044203300023----335799985310003675331--12----------1464023443 Q gi|254780215|r 105 I--EEQKVVFLRHIEASRITGIPLVIHSRSA----DDDMAAILQEEMKKGPFPFVI--HC----------FSSSQKLADI 166 (262) Q Consensus 105 ~--e~Q~~vF~~ql~lA~e~~~pv~iH~r~a----~~~~l~iL~~~~~~~~~~~i~--H~----------FsG~~~~~~~ 166 (262) T Consensus 78 fE~a~~~~~~d~y~~~~~~lGf~~iEiSdg~i~i~~~~~~~~I~~~~~~G-~~v~~EvG~K~~~~~~~~~~~~~I~~~~~ 156 (245) T pfam02679 78 FEIAILQGKFDEYLRECKELGFDAIEISDGSIELPEEERLRLIRKAKKAG-FKVLSEVGKKDPEADSELTPDELIEQIER 156 (245) T ss_pred HHHHHHCCCHHHHHHHHHHCCCCEEEECCCCCCCCHHHHHHHHHHHHHCC-CEEEEEECCCCCCCCCCCCHHHHHHHHHH T ss_conf 99999738399999999986998899568844689899999999999789-97966415467543456799999999999 Q ss_pred HHCCCCEEEC-----CC--CCCHH----HHHHHHHHHHCCCCCCEEEEECC Q ss_conf 2103520202-----33--22113----33223333210566717983078 Q gi|254780215|r 167 CLELGGYISF-----TG--MITFP----KYDALRAIARGIPMDRVLVETDS 206 (262) Q Consensus 167 ~l~~g~y~S~-----~g--~i~~~----~~~~~~e~v~~iPldriLlETDs 206 (262) T Consensus 157 ~LeaGA~~ViiEarEsg~~Gi~~~~g~~r~~~i~~I~~~~~~~~iifEAp~ 207 (245) T pfam02679 157 DLEAGADKVIIEARESGGVGLYDSDGEVRTDLVEEILERLGLEKLIFEAPQ 207 (245) T ss_pred HHHCCCCEEEEECCCCCCCCCCCCCCCCHHHHHHHHHHHCCHHCEEEECCC T ss_conf 997698289985101487565088988718899999973883008997898

HHsearch alignment for GI: 254780215 and conserved domain: pfam02679