>TIGR01979 sufS cysteine desulfurases, SufS subfamily; InterPro: IPR010970 Cysteine desulphurases are pyridoxal-phosphate enzymes which catalyse the removal of sulphur from L-cysteine to form L-alanine and elemental sulphur. These enzymes have been shown to play an important role in the biosynthesis of iron-sulphur clusters, thionucleosides in tRNA, thiamine, biotin, lipoate and molydopterin This entry represents a subfamily of NifS-related cysteine desulphurases that are often involved in iron-sulphur cluster formation, which is needed for nitrogen fixation and other vital functions . Many of these enzymes, in addition to cysteine desulphurase activity, also show selenocysteine lyase activity where L-selenocysteine is converted to L-alanine and selenide . Some of these enzymes are much more specific for selenocysteine than cysteine and are thus believed to function in selenium metabolism rather than sulphur metabolism. Structural studies of the E. coli and Synechocystis enzymes indicate that they are homodimers which show a similar fold to other members of the alpha family of pyridoxal-phosphate enzymes .; GO: 0030170 pyridoxal phosphate binding, 0031071 cysteine desulfurase activity, 0006534 cysteine metabolic process.

Probab=99.92 E-value=7.6e-23 Score=166.86 Aligned_cols=331 Identities=20% Similarity=0.221 Sum_probs=233.2 Q ss_pred CCEEEEEECCCCCCCCCCCH-HHHHHHHHHHHH-HCCCCCCCHHCCC-CCCHHHHHHHHHHHHCCCCC--EEEEECCCCC Q ss_conf 98689981144746677988-999999999998-2987764100027-64028999998887349973--3774056520 Q gi|254780604|r 43 GSRKVTIWCSNDYLGMGKHP-KVIENAQRTFEK-CGIGAGGTRNIAG-TNYYHVMLEKELATLHGKKA--ALIFNSGYIA 117 (401) Q Consensus 43 ~~~~~l~f~sndYLgL~~~p-~v~~a~~~a~~~-~G~~~~~sr~~~G-~~~~~~~LE~~la~~~g~e~--al~~~SG~~A 117 (401) T Consensus 16 Gg~pLvYLDsA---AT~QKP~~Vida~~~yY~~~nANVHRG~H~Ls~~AT~~YE~~R~kva~FiNA~~~~EIvFT~gtTe 92 (409) T TIGR01979 16 GGKPLVYLDSA---ATSQKPQAVIDAVEEYYRKSNANVHRGIHTLSVRATEAYEEAREKVAKFINAASAEEIVFTRGTTE 92 (409) T ss_pred CCCCEEEECCC---CCCCCCHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCEEEECCCCH T ss_conf 99841773485---100284779999999987516700168999999999999999999998508899854787076027 Q ss_pred --HHHHHC---CCCCC----CCCEEEEHHHHHHHHHH---HHHHHCCCCEEEECC-----CCHHHHHHHHHHCCCCCCCE Q ss_conf --122202---34677----88723421321116752---014531651353167-----99889888674066335623 Q gi|254780604|r 118 --NWATIG---TLCSQ----IDNIICFSDSHNHASII---EGINKARCKKVIWNH-----NDLEDLEKNLAATDLSIPKI 180 (401) Q Consensus 118 --n~~~i~---~l~~~----~d~ii~~~D~~~HaSi~---~g~~l~~a~~~~f~H-----nD~~~Le~~L~~~~~~~~~i 180 (401) T Consensus 93 ~iNLvA~s~g~~~l~~av~pGDeIv~-s~mEHHaNiVPWQ~l~~r~GA~lk~~~l~~~G~ld~~~l~~~~~~----~TKl 167 (409) T TIGR01979 93 SINLVAYSWGRSRLKAAVDPGDEIVI-SEMEHHANIVPWQLLAERTGATLKFIPLDDDGTLDLDDLEELLTE----KTKL 167 (409) T ss_pred HHHHHHHHHCCCCCHHHCCCCCEEEE-CCHHHHCCHHHHHHHHHHHCCEEEEEECCCCCEEEHHHHHHHHHC----CCEE T ss_conf 88999998311013425389887984-011100121479999976098789974488760518889988326----9829 Q ss_pred EECCCCCCCCCCHHHHHHHHHHHHCCCCEEEECCCCCCCCCCCHHHHHHHHHHCCC---CCCHHHCCCCCCCCCCE-EEE Q ss_conf 62167435677336899999984014718997121100125602589999972020---01011014443222231-687 Q gi|254780604|r 181 IIFESIYSMDGDIAPIKEICDLADQYNAITYIDEVHAVGIHGSCGAGISEREGIMN---RITIISGTLAKGFGTFG-GYI 256 (401) Q Consensus 181 Iv~e~v~Sm~G~~apL~~l~~l~~~~~~~LivDEAH~~Gv~G~~G~G~~~~~g~~~---~~di~~~TlsKa~g~~G-G~i 256 (401) T Consensus 168 Va~~HvSNVlGtvnP~~ei~~~AH~~GA~vlvDGAQ~~p-----------H~pvDv~~ldcDFyvFSGHKmyGPtGiGVL 236 (409) T TIGR01979 168 VAITHVSNVLGTVNPVEEIIKLAHQVGAKVLVDGAQAVP-----------HMPVDVQALDCDFYVFSGHKMYGPTGIGVL 236 (409) T ss_pred EEEEEEECCCCCCCCHHHHHHHHHHCCCEEEEECCCCCC-----------CCCCCHHHHCCCEEEEECCHHHCCCCCEEE T ss_conf 999742022030148789999986579769986255758-----------989885655787445610045257663011 Q ss_pred ECCHHHHHHH-------------------HCCCCCCCCC-CCCCCHHHHHHHHHHHHHHCC--HHHHHHHHHHHHHHHHH Q ss_conf 5484450000-------------------0133222333-444431478899876432012--01688889999876665 Q gi|254780604|r 257 AASENLCDFI-------------------RSFASGFIFS-TSLPPAIASASVTSIQYIKQH--YDERKKYLERVKQLRHS 314 (401) Q Consensus 257 ~g~~~~~~~l-------------------~~~~~~~ifs-~~l~p~~~aa~~~al~~l~~~--~~~~~~l~~~~~~l~~~ 314 (401) T Consensus 237 YGK~~lLe~MPPf~gGG~MI~~V~~~~g~ty~~~P~KFEAGTPniagviGLgaAidYl~~iG~~~I~~~E~~L~~yal~~ 316 (409) T TIGR01979 237 YGKEELLEEMPPFLGGGEMIEEVSLEEGTTYNEAPHKFEAGTPNIAGVIGLGAAIDYLEKIGLEKIEAHEKELTAYALER 316 (409) T ss_pred HHHHHHHHHCCCCCCCCCEEEEEEECCCCEECCCCCCCCCCCCCHHHHHHHHHHHHHHHHCCHHHHHHHHHHHHHHHHHH T ss_conf 27889886477846698615788805771136787545688835899999999999985238789999999999999999 Q ss_pred HHHCC-CCCCCC-----CCCEEEEEECCHHHHHHHHHHHHHHCCEEEEEEC--------CCCCCCCCCEEEEECCCCCCH Q ss_conf 66449-830378-----9865999968979999999999973790998404--------888888872189961857999 Q gi|254780604|r 315 LENKA-IPCIPN-----ESHIIPIMVGDSHKCTQISNILLKEFGIYIQPIN--------YPTVAKKKERLRVTLTPLHTD 380 (401) Q Consensus 315 L~~~g-~~~~~~-----~s~Ivpi~~g~~~~~~~~~~~lL~e~Gi~v~~i~--------~PtVp~g~~rlRi~l~a~ht~ 380 (401) T Consensus 317 L~~ipg~~iyGP~~~~~R~g~isFn~~g~H-pHDVg~~-LD~~GiAvR~GHHCAqPlm~~~~v---~atcRASf~~YNT~ 391 (409) T TIGR01979 317 LGEIPGLRIYGPRDAEDRGGIISFNVEGVH-PHDVGTI-LDEEGIAVRSGHHCAQPLMRRFGV---PATCRASFYLYNTE 391 (409) T ss_pred HHCCCCEEEECCCCCCCCCCEEEECCCCCC-CCHHHHH-CCCCCCEEEECCHHHHHHHHHCCC---CEEEEEEEEECCCH T ss_conf 601898587468774326433330258887-0022301-226775686170532489865599---63678874103898 Q ss_pred HHHHHHHHHHHHHHHHH Q ss_conf 99999999999999974 Q gi|254780604|r 381 SDIEHLVSSLENVWQKM 397 (401) Q Consensus 381 edid~~~~~l~~v~~~l 397 (401) T Consensus 392 ediD~Lv~aL~~v~~~F 408 (409) T TIGR01979 392 EDIDALVEALKKVRKFF 408 (409) T ss_pred HHHHHHHHHHHHHHHHH T ss_conf 99999999999999860

HHsearch alignment for GI: 254780604 and conserved domain: TIGR01979