>cd01335 Radical_SAM Radical SAM superfamily. Enzymes of this family generate radicals by combining a 4Fe-4S cluster and S-adenosylmethionine (SAM) in close proximity. They are characterized by a conserved CxxxCxxC motif, which coordinates the conserved iron-sulfur cluster. Mechanistically, they share the transfer of a single electron from the iron-sulfur cluster to SAM, which leads to its reductive cleavage to methionine and a 5'-deoxyadenosyl radical, which, in turn, abstracts a hydrogen from the appropriately positioned carbon atom. Depending on the enzyme, SAM is consumed during this process or it is restored and reused. Radical SAM enzymes catalyze steps in metabolism, DNA repair, the biosynthesis of vitamins and coenzymes, and the biosynthesis of many antibiotics. Examples are biotin synthase (BioB), lipoyl synthase (LipA), pyruvate formate-lyase (PFL), coproporphyrinogen oxidase (HemN), lysine 2,3-aminomutase (LAM), anaerobic ribonucleotide reductase (ARR), and MoaA, an enzyme o

Probab=99.91 E-value=1.1e-23 Score=196.44 Aligned_cols=197 Identities=18% Similarity=0.317 Sum_probs=158.3 Q ss_pred EEECCCCCCCCCCCCHHHHHHHH--HHHHHHHHHHHHHHHHHCCCCEEEEECCCCCEEEECCCCCCCCCCCHHHHHHHCC Q ss_conf 74123324468111001221376--4100588999887631013310587314541134113444310002167886204 Q gi|255764472|r 180 LTIQEGCDKFCTFCVVPYTRGIE--ISRSLSQVVDEARKLIDNGVCEITLLGQNVNAWRGKGLDGEKCTFSDLLYSLSEI 257 (469) Q Consensus 180 ikI~~GC~~~CsfC~ip~~RG~~--rSr~~~~Iv~ei~~l~~~G~kEi~L~g~d~~~Y~g~~~~~~~~~l~~Ll~~l~~i 257 (469) T Consensus 1 i~~srGC~~~C~fC~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~g~~~~~---------~~~~~~l~~~~~~ 71 (204) T cd01335 1 LELTRGCNLNCGFCSNPASKGRGPESPPEIEEILDIVLEAKERGVEVVILTGGEPLLY---------PELAELLRRLKKE 71 (204) T ss_pred CCCCCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHCCCEEEEEECCCCCCC---------CCCCHHHHHHHHC T ss_conf 9216373856987998754798756678899999999999875986999724676666---------5321013545530 Q ss_pred CCCCCCCCCCCCCCCCCCHHHHHHCCCCCCCCCEEEEEECCCHHHHHHHC-CCCCCCHHHHHHHHHHHHCCCCCCCEEEE Q ss_conf 44300135442100010003665202211122013321114578998730-33344114678999874013443200000 Q gi|255764472|r 258 KGLVRLRYTTSHPRDMSDCLIKAHGDLDVLMPYLHLPVQSGSDRILKSMN-RRHTAYEYRQIIDRIRSVRPDIAISSDFI 336 (469) Q Consensus 258 ~~~~riR~~s~~P~~~~~~li~~~~~~~~i~~~lhlpiQSgs~~vLk~M~-R~~~~e~~~~~i~~~r~~~p~~~i~tdiI 336 (469) T Consensus 72 ~~~~~i~~~-t~~~~~~~~~l~~l~~~g--~~~~~i~les~~~~~~~~~~~~~~~~~~~~~~~~~~~~~--g~~~~~~~i 146 (204) T cd01335 72 LPGFEISIE-TNGTLLTEELLKELKELG--LDGVGVSLDSGDEEVADKIRGSGESFKERLEALKELREA--GLGLSTTLL 146 (204) T ss_pred CCCCEEEEE-ECCCCCCHHHHHHHHHCC--CCCCCCCCCCCCHHHHHHHHCCCCCHHHHHHHHHHHHHC--CCEEEEEEE T ss_conf 687179998-336547699987754037--542222435689999999848899759999999999867--998999999 Q ss_pred CCCCCCHHHHHHHHHHHHHHHH-HHHCCCHHEEECCCHHHHHCCCCCCHHHHHHH Q ss_conf 1352201247898863322101-11002000011120123214368898999999 Q gi|255764472|r 337 VGFPGETDDDFRATMDLVDKIG-YAQAFSFKYSPRLGTPGSNMLEQVDENVKAER 390 (469) Q Consensus 337 vGfPgETeedf~~Tl~~i~~~~-~~~~~vf~yS~r~gT~Aa~m~~qV~~~vk~~R 390 (469) T Consensus 147 ~G~p~et~~~~~~~~~~~~~~~~~~~~~~~~~~p~~gt~~~~~~~~~~~~~~~~~ 201 (204) T cd01335 147 VGLGDEDEEDDLEELELLAEFRSPDRVSLFRLLPEEGTPLELAAPVVPAEKLLRL 201 (204) T ss_pred ECCCCCCHHHHHHHHHHHHHHCCCCEEEEEEEECCCCCCHHHCCCCCCHHHHHHH T ss_conf 8279999999999999998518998898987662289803338797999999998

HHsearch alignment for GI: 255764472 and conserved domain: cd01335