>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=100.00 E-value=0 Score=734.96 Aligned_cols=360 Identities=28% Similarity=0.413 Sum_probs=331.6 Q ss_pred CCEECCCCCCCCCCHHHHHHHHHHHH-HCCCCC-HHHHHHHHHHHHHHHHHHHHHHHCCCC-HHHEEEECCHHHHHHHHH Q ss_conf 70012157888989899999999996-428852-365899999999999999999972989-778988668538764455 Q gi|254781091|r 3 KRVYLDWNATAPLLEVVRQSFVKSLD-FYGNPS-SVHKEGQKTRLYIEESRRIIADFCGAK-PDHVVFTSSATEAANWVL 79 (383) Q Consensus 3 ~~iYlD~aattp~~~~v~~a~~~~~~-~~~n~~-s~h~~~~~~~~~~e~aR~~ia~~~g~~-~~ei~ft~~~T~a~~~~i 79 (383) T Consensus 19 pLvYLDsAAT~QKP~~Vida~~~yY~~~nANVHRG~H~Ls~~AT~~YE~~R~kva~FiNA~~~~EIvFT~gtTe~iNLvA 98 (409) T TIGR01979 19 PLVYLDSAATSQKPQAVIDAVEEYYRKSNANVHRGIHTLSVRATEAYEEAREKVAKFINAASAEEIVFTRGTTESINLVA 98 (409) T ss_pred CEEEECCCCCCCCCHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCEEEECCCCHHHHHHH T ss_conf 41773485100284779999999987516700168999999999999999999998508899854787076027889999 Q ss_pred HHHHHHCCCCCC----CCEEEECCCCCCCCCCCCCCC----CCCCCCCCCCCCCCCCCHHHHHHHHHHHCCCCCCEEEEE Q ss_conf 654421022456----645873332122111222222----222222222222211102345532443113565326540 Q gi|254781091|r 80 TPHFYQGSHKIS----IDSLYISAIEHPAVYAGGHFP----SHKIHKIPVLSKGIVDIQALTDFLEQRNSTCGIPMIAVM 151 (383) Q Consensus 80 ~~~~~~~~~~~~----~~~ii~s~~eH~s~~~~~~~~----~~~v~~v~~~~~g~i~~~~l~~~i~~~t~~~~~~LVs~~ 151 (383) T Consensus 99 ~s~--g~~~l~~av~pGDeIv~s~mEHHaNiVPWQ~l~~r~GA~lk~~~l~~~G~ld~~~l~~~~~~~T-----KlVa~~ 171 (409) T TIGR01979 99 YSW--GRSRLKAAVDPGDEIVISEMEHHANIVPWQLLAERTGATLKFIPLDDDGTLDLDDLEELLTEKT-----KLVAIT 171 (409) T ss_pred HHH--CCCCCHHHCCCCCEEEECCHHHHCCHHHHHHHHHHHCCEEEEEECCCCCEEEHHHHHHHHHCCC-----EEEEEE T ss_conf 983--1101342538988798401110012147999997609878997448876051888998832698-----299997 Q ss_pred CCCCCCCCCCCHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCEEEEECCCCCCCCCCCHHHHCCCCCCCCCCCCCC Q ss_conf 34344433321123565203446533444323365544444334310687305433223432011014574201221224 Q gi|254781091|r 152 FVNNETGVIQPIKEIAQIVKEYQGILVVDAVQAAGRIPLSIEEIKADFLIISSHKLGAPVGAGALVFREDILLPSPLLRG 231 (383) Q Consensus 152 ~~~n~tG~i~pi~~I~~~~~~~g~~~~vD~aqa~g~~~id~~~~~~D~~~~S~hK~~GP~G~G~L~~r~~~~~~~p~~~G 231 (383) T Consensus 172 HvSNVlGtvnP~~ei~~~AH~~GA~vlvDGAQ~~pH~pvDv~~ldcDFyvFSGHKmyGPtGiGVLYGK~~lLe~MPPf~g 251 (409) T TIGR01979 172 HVSNVLGTVNPVEEIIKLAHQVGAKVLVDGAQAVPHMPVDVQALDCDFYVFSGHKMYGPTGIGVLYGKEELLEEMPPFLG 251 (409) T ss_pred EEECCCCCCCCHHHHHHHHHHCCCEEEEECCCCCCCCCCCHHHHCCCEEEEECCHHHCCCCCEEEHHHHHHHHHCCCCCC T ss_conf 42022030148789999986579769986255758989885655787445610045257663011278898864778466 Q ss_pred CC-C---------------CCCCCCCCCCCCCCCCHHHHHHCCCC-HHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCC Q ss_conf 77-4---------------21222222211222100122110010-0245653210123333444443210001223221 Q gi|254781091|r 232 GD-Q---------------EKGQRAGTENYAVIGGFAVAAQQMVK-DIQKRSSRVFAIRDYLEQELKKLIPNIIIYGKDA 294 (383) Q Consensus 232 g~-~---------------e~~~~~GT~~~~~i~~~~~al~~~~~-~~~~~~~~~~~L~~~l~~~l~~~~~~~~i~~~~~ 294 (383) T Consensus 252 GG~MI~~V~~~~g~ty~~~P~KFEAGTPniagviGLgaAidYl~~iG~~~I~~~E~~L~~yal~~L~~-ipg~~iyGP~~ 330 (409) T TIGR01979 252 GGEMIEEVSLEEGTTYNEAPHKFEAGTPNIAGVIGLGAAIDYLEKIGLEKIEAHEKELTAYALERLGE-IPGLRIYGPRD 330 (409) T ss_pred CCCEEEEEEECCCCEECCCCCCCCCCCCCHHHHHHHHHHHHHHHHCCHHHHHHHHHHHHHHHHHHHHC-CCCEEEECCCC T ss_conf 98615788805771136787545688835899999999999985238789999999999999999601-89858746877 Q ss_pred -CCCCCEEEEEECCCCHHHHHHHHHHCCCEEEECHHHCCCCCCCCHHHHHCCCCCCCCEEEEEECCCCCHHHHHHHHHHH Q ss_conf -1036522898579999999999875896998711338864331014676288874765999907888999999999999 Q gi|254781091|r 295 -ERISNTCCFSIPFLKAEVLQIALDLEGIAVSAGSACSSGKIKKNHVLAAMGFDTSQGAVRVSCGDSTTQEDIDIFLNAL 373 (383) Q Consensus 295 -~~~~~i~~~~~~~~~~~~v~~~l~~~gI~v~~G~~C~~~~~~~~~vl~~~g~~~~~g~vRiS~~~~nT~~dId~l~~~L 373 (383) T Consensus 331 ~~~R~g~isFn~~g~HpHDVg~~LD~~GiAvR~GHHCAqPlm~~~------~---v~atcRASf~~YNT~ediD~Lv~aL 401 (409) T TIGR01979 331 AEDRGGIISFNVEGVHPHDVGTILDEEGIAVRSGHHCAQPLMRRF------G---VPATCRASFYLYNTEEDIDALVEAL 401 (409) T ss_pred CCCCCCEEEECCCCCCCCHHHHHCCCCCCEEEECCHHHHHHHHHC------C---CCEEEEEEEEECCCHHHHHHHHHHH T ss_conf 432643333025888700223012267756861705324898655------9---9636788741038989999999999 Q ss_pred HHHHHH Q ss_conf 999986 Q gi|254781091|r 374 QKIIRT 379 (383) Q Consensus 374 ~~iv~~ 379 (383) T Consensus 402 ~~v~~~ 407 (409) T TIGR01979 402 KKVRKF 407 (409) T ss_pred HHHHHH T ss_conf 999986

HHsearch alignment for GI: 254781091 and conserved domain: TIGR01979