>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=99.01 E-value=5.5e-08 Score=80.15 Aligned_cols=178 Identities=20% Similarity=0.295 Sum_probs=114.4 Q ss_pred EECCCCHHCCCCCCCCCCHHH---CCCCHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCEEEEECCCCHHHHHH Q ss_conf 840651004861322441110---27898999999999999722203444434344454586110144101454454289 Q gi|254781120|r 119 SSQVGCSLTCSFCYTGTQKLV---RNLTAEEILLQVLLARSLLGDFPGCEDIEGMVIPSVGRKISNIVMMGMGEPLCNFD 195 (384) Q Consensus 119 SSQvGC~m~C~FCaTg~~G~~---RNLt~~EIv~Qv~~~~~~l~~~~~~~~~~~~~~~~~~~~i~NiVfMGmGEPl~N~d 195 (384) T Consensus 2 ~~srGC~~~C~fC~~~~~~~~~~~~~~~~~~~~~~~~~~~~--------------------~~~-~~~~~~~g~~~~~~- 59 (204) T cd01335 2 ELTRGCNLNCGFCSNPASKGRGPESPPEIEEILDIVLEAKE--------------------RGV-EVVILTGGEPLLYP- 59 (204) T ss_pred CCCCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHH--------------------CCC-EEEEEECCCCCCCC- T ss_conf 21637385698799875479875667889999999999987--------------------598-69997246766665- Q ss_pred HHHHHHHCCCCCCCCCCCCCEEEEEECCCC--H-HHHHHHCCCCCCEEEEEECCCCHHHHHHCCCCCCCCHHHHHHHHHH Q ss_conf 999996037684577877536888513874--1-4788601256517998404551134441233125789999999999 Q gi|254781120|r 196 NVKKSLSIASDSMGLSFSKRRITLSTSGFV--P-NIARVGEEIGVMLAISLHAVSNDLRNILVPINRKYPLEMLIDACRH 272 (384) Q Consensus 196 ~v~~ai~~l~~~~g~~~~~r~ITvST~Gi~--p-~I~~la~~~~~~LAiSLha~~~~~R~~lmPi~~~~~l~~l~~a~~~ 272 (384) T Consensus 60 ~~~~~l~~~~~~----~~~~~i~~~t~~~~~~~~~l~~l~~~g~~~~~i~les~~~~~~~~~~--~~~~~~~~~~~~~~~ 133 (204) T cd01335 60 ELAELLRRLKKE----LPGFEISIETNGTLLTEELLKELKELGLDGVGVSLDSGDEEVADKIR--GSGESFKERLEALKE 133 (204) T ss_pred CCCHHHHHHHHC----CCCCEEEEEECCCCCCHHHHHHHHHCCCCCCCCCCCCCCHHHHHHHH--CCCCCHHHHHHHHHH T ss_conf 321013545530----68717999833654769998775403754222243568999999984--889975999999999 Q ss_pred HHHHCCCCEEEEEEEEECCCCCCHHHHHHHHHHHCCC--CCEEEEEECCCCCCCCCC Q ss_conf 9862589459999987269998889999999983254--531667512778879886 Q gi|254781120|r 273 YPGLSNARRITFEYVMLKGINDSPRDALNLIKILKGI--PAKINLIPFNPWPGCEYL 327 (384) Q Consensus 273 y~~~~~~rrit~EYvli~gvNDs~e~a~~L~~ll~~~--~~~vNLIp~N~~~~~~~~ 327 (384) T Consensus 134 ~~~-~-g~~~~~~~i~G~p~-et~~~~~~~~~~~~~~~~~~~~~~~~~~p~~gt~~~ 187 (204) T cd01335 134 LRE-A-GLGLSTTLLVGLGD-EDEEDDLEELELLAEFRSPDRVSLFRLLPEEGTPLE 187 (204) T ss_pred HHH-C-CCEEEEEEEECCCC-CCHHHHHHHHHHHHHHCCCCEEEEEEEECCCCCCHH T ss_conf 986-7-99899999982799-999999999999985189988989876622898033

HHsearch alignment for GI: 254781120 and conserved domain: cd01335