1 d2edua1
99.7
33
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: ComEA-like
2 d3bzka1
99.7
34
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: Tex HhH-containing domain-like
3 d2duya1
99.7
42
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: ComEA-like
4 c1s5lu_
99.7
20
PDB header: photosynthesisChain: U: PDB Molecule: photosystem ii 12 kda extrinsic protein;
PDBTitle: architecture of the photosynthetic oxygen evolving center
5 d2axtu1
99.7
22
Fold: SAM domain-likeSuperfamily: PsbU/PolX domain-likeFamily: PsbU-like
6 c2oceA_
99.4
34
PDB header: structural genomics, unknown functionChain: A: PDB Molecule: hypothetical protein pa5201;
PDBTitle: crystal structure of tex family protein pa5201 from2 pseudomonas aeruginosa
7 c3psiA_
99.1
20
PDB header: transcriptionChain: A: PDB Molecule: transcription elongation factor spt6;
PDBTitle: crystal structure of the spt6 core domain from saccharomyces2 cerevisiae, form spt6(239-1451)
8 c3psfA_
99.0
21
PDB header: transcriptionChain: A: PDB Molecule: transcription elongation factor spt6;
PDBTitle: crystal structure of the spt6 core domain from saccharomyces2 cerevisiae, form spt6(236-1259)
9 d2bgwa1
98.2
19
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: Hef domain-like
10 d1x2ia1
97.9
20
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: Hef domain-like
11 c1kftA_
97.8
29
PDB header: dna binding proteinChain: A: PDB Molecule: excinuclease abc subunit c;
PDBTitle: solution structure of the c-terminal domain of uvrc from e-2 coli
12 d1kfta_
97.8
29
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: Excinuclease UvrC C-terminal domain
13 d3ci0k2
97.7
24
Fold: SAM domain-likeSuperfamily: GspK insert domain-likeFamily: GspK insert domain-like
14 c3ci0K_
97.5
20
PDB header: protein transportChain: K: PDB Molecule: pseudopilin gspk;
PDBTitle: the crystal structure of the gspk-gspi-gspj complex from2 enterotoxigenic escherichia coli type 2 secretion system
15 d2i5ha1
97.5
30
Fold: AF1531-likeSuperfamily: AF1531-likeFamily: AF1531-like
16 c2i5hA_
97.5
30
PDB header: structural genomics, unknown functionChain: A: PDB Molecule: hypothetical protein af1531;
PDBTitle: crystal structure of af1531 from archaeoglobus fulgidus,2 pfam duf655
17 c2hnhA_
97.4
27
PDB header: transferaseChain: A: PDB Molecule: dna polymerase iii alpha subunit;
PDBTitle: crystal structure of the catalytic alpha subunit of e. coli2 replicative dna polymerase iii
18 c3f2cA_
97.3
45
PDB header: transferase/dnaChain: A: PDB Molecule: geobacillus kaustophilus dna polc;
PDBTitle: dna polymerase polc from geobacillus kaustophilus complex with dna,2 dgtp and mn
19 c2bcuA_
97.2
25
PDB header: transferase, lyase/dnaChain: A: PDB Molecule: dna polymerase lambda;
PDBTitle: dna polymerase lambda in complex with a dna duplex2 containing an unpaired damp and a t:t mismatch
20 c3e0dA_
97.2
33
PDB header: transferase/dnaChain: A: PDB Molecule: dna polymerase iii subunit alpha;
PDBTitle: insights into the replisome from the crystral structure of2 the ternary complex of the eubacterial dna polymerase iii3 alpha-subunit
21 d2i1qa1
not modelled
97.2
20
Fold: SAM domain-likeSuperfamily: Rad51 N-terminal domain-likeFamily: DNA repair protein Rad51, N-terminal domain
22 d1pzna1
not modelled
97.1
17
Fold: SAM domain-likeSuperfamily: Rad51 N-terminal domain-likeFamily: DNA repair protein Rad51, N-terminal domain
23 d1dgsa1
not modelled
97.0
19
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: NAD+-dependent DNA ligase, domain 3
24 c8iczA_
not modelled
96.9
29
PDB header: transferase/dnaChain: A: PDB Molecule: protein (dna polymerase beta (e.c.2.7.7.7));
PDBTitle: dna polymerase beta (pol b) (e.c.2.7.7.7) complexed with2 seven base pairs of dna; soaked in the presence of of datp3 (1 millimolar), mncl2 (5 millimolar), and lithium sulfate4 (75 millimolar)
25 d2a1jb1
not modelled
96.9
25
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: Hef domain-like
26 c1ixrA_
not modelled
96.8
30
PDB header: hydrolaseChain: A: PDB Molecule: holliday junction dna helicase ruva;
PDBTitle: ruva-ruvb complex
27 c2w9mB_
not modelled
96.7
27
PDB header: dna replicationChain: B: PDB Molecule: polymerase x;
PDBTitle: structure of family x dna polymerase from deinococcus2 radiodurans
28 d1cuka2
not modelled
96.7
38
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: DNA helicase RuvA subunit, middle domain
29 d1ixra1
not modelled
96.5
37
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: DNA helicase RuvA subunit, middle domain
30 d1szpa1
not modelled
96.5
21
Fold: SAM domain-likeSuperfamily: Rad51 N-terminal domain-likeFamily: DNA repair protein Rad51, N-terminal domain
31 c1kdhA_
not modelled
96.4
17
PDB header: transferase/dnaChain: A: PDB Molecule: terminal deoxynucleotidyltransferase short
PDBTitle: binary complex of murine terminal deoxynucleotidyl2 transferase with a primer single stranded dna
32 d1bvsa2
not modelled
96.3
32
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: DNA helicase RuvA subunit, middle domain
33 c2ihmA_
not modelled
96.3
27
PDB header: transferase/dnaChain: A: PDB Molecule: dna polymerase mu;
PDBTitle: polymerase mu in ternary complex with gapped 11mer dna2 duplex and bound incoming nucleotide
34 d2aq0a1
not modelled
96.1
18
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: Hef domain-like
35 c1hjpA_
not modelled
96.1
40
PDB header: dna recombinationChain: A: PDB Molecule: ruva;
PDBTitle: holliday junction binding protein ruva from e. coli
36 c1d8lA_
not modelled
95.6
41
PDB header: gene regulationChain: A: PDB Molecule: protein (holliday junction dna helicase ruva);
PDBTitle: e. coli holliday junction binding protein ruva nh2 region2 lacking domain iii
37 c2bhnD_
not modelled
95.6
26
PDB header: hydrolaseChain: D: PDB Molecule: xpf endonuclease;
PDBTitle: xpf from aeropyrum pernix
38 c2h5xA_
not modelled
95.6
33
PDB header: dna binding proteinChain: A: PDB Molecule: holliday junction atp-dependent dna helicase ruva;
PDBTitle: ruva from mycobacterium tuberculosis
39 c1nomA_
not modelled
95.4
35
PDB header: nucleotidyltransferaseChain: A: PDB Molecule: dna polymerase beta;
PDBTitle: dna polymerase beta (pol b) (e.c.2.7.7.7), 31-kd domain; soaked in the2 presence of mncl2 (5 millimolar)
40 c2nrzB_
not modelled
95.4
18
PDB header: hydrolaseChain: B: PDB Molecule: uvrabc system protein c;
PDBTitle: crystal structure of the c-terminal half of uvrc bound to2 its catalytic divalent cation
41 c1b22A_
not modelled
95.2
18
PDB header: dna binding proteinChain: A: PDB Molecule: dna repair protein rad51;
PDBTitle: rad51 (n-terminal domain)
42 d1b22a_
not modelled
95.2
18
Fold: SAM domain-likeSuperfamily: Rad51 N-terminal domain-likeFamily: DNA repair protein Rad51, N-terminal domain
43 c1rrqA_
not modelled
94.7
17
PDB header: hydrolase/dnaChain: A: PDB Molecule: muty;
PDBTitle: muty adenine glycosylase in complex with dna containing an2 a:oxog pair
44 d2p6ra2
not modelled
94.1
23
Fold: Sec63 N-terminal domain-likeSuperfamily: Sec63 N-terminal domain-likeFamily: Achaeal helicase C-terminal domain
45 d1kg2a_
not modelled
94.1
26
Fold: DNA-glycosylaseSuperfamily: DNA-glycosylaseFamily: Mismatch glycosylase
46 d1szpb1
not modelled
94.1
26
Fold: SAM domain-likeSuperfamily: Rad51 N-terminal domain-likeFamily: DNA repair protein Rad51, N-terminal domain
47 d1jmsa1
not modelled
94.0
16
Fold: SAM domain-likeSuperfamily: DNA polymerase beta, N-terminal domain-likeFamily: DNA polymerase beta, N-terminal domain-like
48 c1wg8B_
not modelled
93.9
36
PDB header: transferaseChain: B: PDB Molecule: predicted s-adenosylmethionine-dependent
PDBTitle: crystal structure of a predicted s-adenosylmethionine-2 dependent methyltransferase tt1512 from thermus3 thermophilus hb8.
49 c2p6uA_
not modelled
93.9
23
PDB header: dna binding proteinChain: A: PDB Molecule: afuhel308 helicase;
PDBTitle: apo structure of the hel308 superfamily 2 helicase
50 d1wg8a1
not modelled
93.5
36
Fold: SAM domain-likeSuperfamily: Putative methyltransferase TM0872, insert domainFamily: Putative methyltransferase TM0872, insert domain
51 d3ci0k1
not modelled
93.1
17
Fold: SAM domain-likeSuperfamily: GspK insert domain-likeFamily: GspK insert domain-like
52 d2fmpa1
not modelled
92.9
20
Fold: SAM domain-likeSuperfamily: DNA polymerase beta, N-terminal domain-likeFamily: DNA polymerase beta, N-terminal domain-like
53 c2owoA_
not modelled
92.8
19
PDB header: ligase/dnaChain: A: PDB Molecule: dna ligase;
PDBTitle: last stop on the road to repair: structure of e.coli dna ligase bound2 to nicked dna-adenylate
54 d1pu6a_
not modelled
92.8
24
Fold: DNA-glycosylaseSuperfamily: DNA-glycosylaseFamily: 3-Methyladenine DNA glycosylase III (MagIII)
55 c1dgsB_
not modelled
92.7
22
PDB header: ligaseChain: B: PDB Molecule: dna ligase;
PDBTitle: crystal structure of nad+-dependent dna ligase from t.2 filiformis
56 c3n5nX_
not modelled
92.5
28
PDB header: hydrolaseChain: X: PDB Molecule: a/g-specific adenine dna glycosylase;
PDBTitle: crystal structure analysis of the catalytic domain and interdomain2 connector of human muty homologue
57 c1v9pB_
not modelled
92.5
21
PDB header: ligaseChain: B: PDB Molecule: dna ligase;
PDBTitle: crystal structure of nad+-dependent dna ligase
58 d1rrqa1
not modelled
92.0
19
Fold: DNA-glycosylaseSuperfamily: DNA-glycosylaseFamily: Mismatch glycosylase
59 d2bcqa1
not modelled
91.6
22
Fold: SAM domain-likeSuperfamily: DNA polymerase beta, N-terminal domain-likeFamily: DNA polymerase beta, N-terminal domain-like
60 c2csdB_
not modelled
91.5
27
PDB header: isomeraseChain: B: PDB Molecule: topoisomerase v;
PDBTitle: crystal structure of topoisomerase v (61 kda fragment)
61 c2kp7A_
not modelled
91.0
18
PDB header: hydrolaseChain: A: PDB Molecule: crossover junction endonuclease mus81;
PDBTitle: solution nmr structure of the mus81 n-terminal hhh.2 northeast structural genomics consortium target mmt1a
62 d1mpga1
not modelled
90.7
26
Fold: DNA-glycosylaseSuperfamily: DNA-glycosylaseFamily: DNA repair glycosylase, 2 C-terminal domains
63 d2abka_
not modelled
90.2
21
Fold: DNA-glycosylaseSuperfamily: DNA-glycosylaseFamily: Endonuclease III
64 d1nzpa_
not modelled
90.2
22
Fold: SAM domain-likeSuperfamily: DNA polymerase beta, N-terminal domain-likeFamily: DNA polymerase beta, N-terminal domain-like
65 d1orna_
not modelled
89.7
25
Fold: DNA-glycosylaseSuperfamily: DNA-glycosylaseFamily: Endonuclease III
66 c1vddC_
not modelled
89.2
33
PDB header: recombinationChain: C: PDB Molecule: recombination protein recr;
PDBTitle: crystal structure of recombinational repair protein recr
67 d2fmpa2
not modelled
89.0
35
Fold: SAM domain-likeSuperfamily: PsbU/PolX domain-likeFamily: DNA polymerase beta-like, second domain
68 d1dk2a_
not modelled
89.0
20
Fold: SAM domain-likeSuperfamily: DNA polymerase beta, N-terminal domain-likeFamily: DNA polymerase beta, N-terminal domain-like
69 d1vdda_
not modelled
88.9
33
Fold: Recombination protein RecRSuperfamily: Recombination protein RecRFamily: Recombination protein RecR
70 d1keaa_
not modelled
88.2
17
Fold: DNA-glycosylaseSuperfamily: DNA-glycosylaseFamily: Mismatch glycosylase
71 c1ut8B_
not modelled
88.0
31
PDB header: hydrolaseChain: B: PDB Molecule: exodeoxyribonuclease;
PDBTitle: divalent metal ions (zinc) bound to t5 5'-exonuclease
72 d1a77a1
not modelled
87.5
33
Fold: SAM domain-likeSuperfamily: 5' to 3' exonuclease, C-terminal subdomainFamily: 5' to 3' exonuclease, C-terminal subdomain
73 d2vana1
not modelled
87.4
38
Fold: SAM domain-likeSuperfamily: PsbU/PolX domain-likeFamily: DNA polymerase beta-like, second domain
74 d1rxwa1
not modelled
87.0
25
Fold: SAM domain-likeSuperfamily: 5' to 3' exonuclease, C-terminal subdomainFamily: 5' to 3' exonuclease, C-terminal subdomain
75 c1mpgB_
not modelled
86.8
26
PDB header: hydrolaseChain: B: PDB Molecule: 3-methyladenine dna glycosylase ii;
PDBTitle: 3-methyladenine dna glycosylase ii from escherichia coli
76 c1rxvA_
not modelled
86.2
20
PDB header: hydrolase/dnaChain: A: PDB Molecule: flap structure-specific endonuclease;
PDBTitle: crystal structure of a. fulgidus fen-1 bound to dna
77 c3n0uB_
not modelled
86.1
35
PDB header: hydrolase, lyaseChain: B: PDB Molecule: probable n-glycosylase/dna lyase;
PDBTitle: crystal structure of tm1821, the 8-oxoguanine dna glycosylase of2 thermotoga maritima
78 d2bcqa2
not modelled
85.9
29
Fold: SAM domain-likeSuperfamily: PsbU/PolX domain-likeFamily: DNA polymerase beta-like, second domain
79 c3c1zA_
not modelled
85.2
23
PDB header: dna binding proteinChain: A: PDB Molecule: dna integrity scanning protein disa;
PDBTitle: structure of the ligand-free form of a bacterial dna damage2 sensor protein
80 d1m6ya1
not modelled
85.1
35
Fold: SAM domain-likeSuperfamily: Putative methyltransferase TM0872, insert domainFamily: Putative methyltransferase TM0872, insert domain
81 d1jmsa3
not modelled
84.8
23
Fold: SAM domain-likeSuperfamily: PsbU/PolX domain-likeFamily: DNA polymerase beta-like, second domain
82 d1ul1x1
not modelled
84.5
25
Fold: SAM domain-likeSuperfamily: 5' to 3' exonuclease, C-terminal subdomainFamily: 5' to 3' exonuclease, C-terminal subdomain
83 d1cooa_
not modelled
83.9
26
Fold: SAM domain-likeSuperfamily: C-terminal domain of RNA polymerase alpha subunitFamily: C-terminal domain of RNA polymerase alpha subunit
84 d1xo1a1
not modelled
83.8
33
Fold: SAM domain-likeSuperfamily: 5' to 3' exonuclease, C-terminal subdomainFamily: 5' to 3' exonuclease, C-terminal subdomain
85 c3s6iA_
not modelled
82.5
30
PDB header: hydrolase/dnaChain: A: PDB Molecule: dna-3-methyladenine glycosylase 1;
PDBTitle: schizosaccaromyces pombe 3-methyladenine dna glycosylase (mag1) in2 complex with abasic-dna.
86 d1lb2b_
not modelled
82.4
26
Fold: SAM domain-likeSuperfamily: C-terminal domain of RNA polymerase alpha subunitFamily: C-terminal domain of RNA polymerase alpha subunit
87 d2a1ja1
not modelled
81.2
19
Fold: SAM domain-likeSuperfamily: RuvA domain 2-likeFamily: Hef domain-like
88 d1z3eb1
not modelled
80.3
38
Fold: SAM domain-likeSuperfamily: C-terminal domain of RNA polymerase alpha subunitFamily: C-terminal domain of RNA polymerase alpha subunit
89 d1doqa_
not modelled
79.6
33
Fold: SAM domain-likeSuperfamily: C-terminal domain of RNA polymerase alpha subunitFamily: C-terminal domain of RNA polymerase alpha subunit
90 c2jhnB_
not modelled
79.6
33
PDB header: hydrolaseChain: B: PDB Molecule: 3-methyladenine dna-glycosylase;
PDBTitle: 3-methyladenine dna-glycosylase from archaeoglobus fulgidus
91 c2ziuA_
not modelled
79.3
35
PDB header: hydrolaseChain: A: PDB Molecule: mus81 protein;
PDBTitle: crystal structure of the mus81-eme1 complex
92 d1ngna_
not modelled
79.2
16
Fold: DNA-glycosylaseSuperfamily: DNA-glycosylaseFamily: Mismatch glycosylase
93 d1d8ba_
not modelled
76.9
4
Fold: SAM domain-likeSuperfamily: HRDC-likeFamily: HRDC domain from helicases
94 d1mc8a1
not modelled
76.5
35
Fold: SAM domain-likeSuperfamily: 5' to 3' exonuclease, C-terminal subdomainFamily: 5' to 3' exonuclease, C-terminal subdomain
95 c3f10A_
not modelled
76.0
38
PDB header: hydrolase, lyaseChain: A: PDB Molecule: 8-oxoguanine-dna-glycosylase;
PDBTitle: crystal structure of clostridium acetobutylicum 8-2 oxoguanine dna glycosylase in complex with 8-oxoguanosine
96 d1b43a1
not modelled
75.0
42
Fold: SAM domain-likeSuperfamily: 5' to 3' exonuclease, C-terminal subdomainFamily: 5' to 3' exonuclease, C-terminal subdomain
97 c1a77A_
not modelled
74.8
33
PDB header: 5'-3' exo/endo nucleaseChain: A: PDB Molecule: flap endonuclease-1 protein;
PDBTitle: flap endonuclease-1 from methanococcus jannaschii
98 d2noha1
not modelled
74.4
29
Fold: DNA-glycosylaseSuperfamily: DNA-glycosylaseFamily: DNA repair glycosylase, 2 C-terminal domains
99 c3kntC_
not modelled
74.2
27
PDB header: hydrolase, lyase/dnaChain: C: PDB Molecule: n-glycosylase/dna lyase;
PDBTitle: crystal structure of methanocaldococcus jannaschii 8-2 oxoguanine glycosylase/lyase in complex with 15mer dna3 containing 8-oxoguanine
100 d1u9la_
not modelled
73.6
25
Fold: SAM domain-likeSuperfamily: Rad51 N-terminal domain-likeFamily: NusA extra C-terminal domains
101 c2va8A_
not modelled
73.4
33
PDB header: hydrolaseChain: A: PDB Molecule: ski2-type helicase;
PDBTitle: dna repair helicase hel308
102 c3fhgA_
not modelled
73.1
25
PDB header: dna repair, hydrolase, lyaseChain: A: PDB Molecule: n-glycosylase/dna lyase;
PDBTitle: crystal structure of sulfolobus solfataricus 8-oxoguanine dna2 glycosylase (ssogg)
103 c1yqmA_
not modelled
72.8
30
PDB header: hydrolase/dnaChain: A: PDB Molecule: n-glycosylase/dna lyase;
PDBTitle: catalytically inactive human 8-oxoguanine glycosylase2 crosslinked to 7-deazaguanine containing dna
104 c3q8lA_
not modelled
72.5
25
PDB header: hydrolase/dnaChain: A: PDB Molecule: flap endonuclease 1;
PDBTitle: crystal structure of human flap endonuclease fen1 (wt) in complex with2 substrate 5'-flap dna, sm3+, and k+
105 c1ko9A_
not modelled
72.2
33
PDB header: hydrolaseChain: A: PDB Molecule: 8-oxoguanine dna glycosylase;
PDBTitle: native structure of the human 8-oxoguanine dna glycosylase2 hogg1
106 c2yg8B_
not modelled
72.1
24
PDB header: hydrolaseChain: B: PDB Molecule: dna-3-methyladenine glycosidase ii, putative;
PDBTitle: structure of an unusual 3-methyladenine dna glycosylase ii (2 alka) from deinococcus radiodurans
107 c1ul1Y_
not modelled
71.1
25
PDB header: hydrolase/dna binding proteinChain: Y: PDB Molecule: flap endonuclease-1;
PDBTitle: crystal structure of the human fen1-pcna complex
108 c2h56C_
not modelled
69.8
21
PDB header: hydrolaseChain: C: PDB Molecule: dna-3-methyladenine glycosidase;
PDBTitle: crystal structure of dna-3-methyladenine glycosidase (10174367) from2 bacillus halodurans at 2.55 a resolution
109 d2ve8a1
not modelled
69.7
23
Fold: DNA/RNA-binding 3-helical bundleSuperfamily: "Winged helix" DNA-binding domainFamily: FtsK C-terminal domain-like
110 c2izoA_
not modelled
65.1
21
PDB header: hydrolaseChain: A: PDB Molecule: flap structure-specific endonuclease;
PDBTitle: structure of an archaeal pcna1-pcna2-fen1 complex
111 d2uubm1
not modelled
60.1
19
Fold: S13-like H2TH domainSuperfamily: S13-like H2TH domainFamily: Ribosomal protein S13
112 d1cmwa1
not modelled
60.0
30
Fold: SAM domain-likeSuperfamily: 5' to 3' exonuclease, C-terminal subdomainFamily: 5' to 3' exonuclease, C-terminal subdomain
113 d2j5pa1
not modelled
57.9
27
Fold: DNA/RNA-binding 3-helical bundleSuperfamily: "Winged helix" DNA-binding domainFamily: FtsK C-terminal domain-like
114 c1b43A_
not modelled
54.0
41
PDB header: transferaseChain: A: PDB Molecule: protein (fen-1);
PDBTitle: fen-1 from p. furiosus
115 d2gy9m1
not modelled
53.6
12
Fold: S13-like H2TH domainSuperfamily: S13-like H2TH domainFamily: Ribosomal protein S13
116 c3f52A_
not modelled
52.4
15
PDB header: transcription activatorChain: A: PDB Molecule: clp gene regulator (clgr);
PDBTitle: crystal structure of the clp gene regulator clgr from c. glutamicum
117 d2e1fa1
not modelled
51.0
26
Fold: SAM domain-likeSuperfamily: HRDC-likeFamily: HRDC domain from helicases
118 d1wuda1
not modelled
50.8
25
Fold: SAM domain-likeSuperfamily: HRDC-likeFamily: HRDC domain from helicases
119 c2xznM_
not modelled
50.5
11
PDB header: ribosomeChain: M: PDB Molecule: rps18e;
PDBTitle: crystal structure of the eukaryotic 40s ribosomal2 subunit in complex with initiation factor 1. this file3 contains the 40s subunit and initiation factor for4 molecule 2
120 c3rfaA_
not modelled
50.1
8
PDB header: oxidoreductaseChain: A: PDB Molecule: ribosomal rna large subunit methyltransferase n;
PDBTitle: x-ray structure of rlmn from escherichia coli in complex with s-2 adenosylmethionine