1 c1kgsA_
100.0
17
PDB header: dna binding proteinChain: A: PDB Molecule: dna binding response regulator d;
PDBTitle: crystal structure at 1.50 a of an ompr/phob homolog from thermotoga2 maritima
2 c1zn2A_
100.0
18
PDB header: transcription regulatorChain: A: PDB Molecule: response regulatory protein;
PDBTitle: low resolution structure of response regulator styr
3 c3r0jA_
100.0
18
PDB header: dna binding proteinChain: A: PDB Molecule: possible two component system response transcriptional
PDBTitle: structure of phop from mycobacterium tuberculosis
4 c3b2nA_
100.0
16
PDB header: transcriptionChain: A: PDB Molecule: uncharacterized protein q99uf4;
PDBTitle: crystal structure of dna-binding response regulator, luxr family, from2 staphylococcus aureus
5 c3c3wB_
100.0
17
PDB header: transcriptionChain: B: PDB Molecule: two component transcriptional regulatory protein devr;
PDBTitle: crystal structure of the mycobacterium tuberculosis hypoxic response2 regulator dosr
6 c3breA_
100.0
23
PDB header: signaling proteinChain: A: PDB Molecule: probable two-component response regulator;
PDBTitle: crystal structure of p.aeruginosa pa3702
7 c2ayxA_
99.9
22
PDB header: transferaseChain: A: PDB Molecule: sensor kinase protein rcsc;
PDBTitle: solution structure of the e.coli rcsc c-terminus (residues2 700-949) containing linker region and phosphoreceiver3 domain
8 c3i5aA_
99.9
21
PDB header: signaling proteinChain: A: PDB Molecule: response regulator/ggdef domain protein;
PDBTitle: crystal structure of full-length wpsr from pseudomonas syringae
9 c3eq2A_
99.9
23
PDB header: signaling proteinChain: A: PDB Molecule: probable two-component response regulator;
PDBTitle: structure of hexagonal crystal form of pseudomonas2 aeruginosa rssb
10 c1a2oB_
99.9
17
PDB header: bacterial chemotaxisChain: B: PDB Molecule: cheb methylesterase;
PDBTitle: structural basis for methylesterase cheb regulation by a2 phosphorylation-activated domain
11 c3q9sA_
99.9
18
PDB header: dna binding proteinChain: A: PDB Molecule: dna-binding response regulator;
PDBTitle: crystal structure of rra(1-215) from deinococcus radiodurans
12 c1ys7B_
99.9
20
PDB header: transcription regulatorChain: B: PDB Molecule: transcriptional regulatory protein prra;
PDBTitle: crystal structure of the response regulator protein prra comlexed with2 mg2+
13 c1ny5A_
99.9
22
PDB header: transcriptionChain: A: PDB Molecule: transcriptional regulator (ntrc family);
PDBTitle: crystal structure of sigm54 activator (aaa+ atpase) in the inactive2 state
14 d1s8na_
99.9
16
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
15 c3cz5B_
99.9
16
PDB header: transcription regulatorChain: B: PDB Molecule: two-component response regulator, luxr family;
PDBTitle: crystal structure of two-component response regulator, luxr family,2 from aurantimonas sp. si85-9a1
16 c1w25B_
99.9
20
PDB header: signaling proteinChain: B: PDB Molecule: stalked-cell differentiation controlling protein;
PDBTitle: response regulator pled in complex with c-digmp
17 c3eulB_
99.9
21
PDB header: transcriptionChain: B: PDB Molecule: possible nitrate/nitrite response transcriptional
PDBTitle: structure of the signal receiver domain of the putative2 response regulator narl from mycobacterium tuberculosis
18 d1a04a2
99.9
28
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
19 d1jbea_
99.9
23
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
20 c2gwrA_
99.9
18
PDB header: signaling proteinChain: A: PDB Molecule: dna-binding response regulator mtra;
PDBTitle: crystal structure of the response regulator protein mtra from2 mycobacterium tuberculosis
21 c3jteA_
not modelled
99.9
24
PDB header: protein bindingChain: A: PDB Molecule: response regulator receiver protein;
PDBTitle: crystal structure of response regulator receiver domain2 protein from clostridium thermocellum
22 c1p2fA_
not modelled
99.9
13
PDB header: transcriptionChain: A: PDB Molecule: response regulator;
PDBTitle: crystal structure analysis of response regulator drrb, a2 thermotoga maritima ompr/phob homolog
23 d1ny5a1
not modelled
99.9
22
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
24 c2qv0A_
not modelled
99.9
18
PDB header: transcriptionChain: A: PDB Molecule: protein mrke;
PDBTitle: crystal structure of the response regulatory domain of2 protein mrke from klebsiella pneumoniae
25 c3cu5B_
not modelled
99.9
20
PDB header: transcription regulatorChain: B: PDB Molecule: two component transcriptional regulator, arac family;
PDBTitle: crystal structure of a two component transcriptional regulator arac2 from clostridium phytofermentans isdg
26 d1dz3a_
not modelled
99.9
23
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
27 d1u0sy_
not modelled
99.9
28
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
28 c2oqrA_
not modelled
99.9
14
PDB header: transcription,signaling proteinChain: A: PDB Molecule: sensory transduction protein regx3;
PDBTitle: the structure of the response regulator regx3 from mycobacterium2 tuberculosis
29 d1qkka_
not modelled
99.9
20
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
30 c3rqiA_
not modelled
99.9
19
PDB header: transcriptionChain: A: PDB Molecule: response regulator protein;
PDBTitle: crystal structure of a response regulator protein from burkholderia2 pseudomallei with a phosphorylated aspartic acid, calcium ion and3 citrate
31 c2jrlA_
not modelled
99.9
25
PDB header: transcriptionChain: A: PDB Molecule: transcriptional regulator (ntrc family);
PDBTitle: solution structure of the beryllofluoride-activated ntrc4 receiver2 domain dimer
32 d2pl1a1
not modelled
99.9
19
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
33 d1ys7a2
not modelled
99.9
26
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
34 c2qr3A_
not modelled
99.9
18
PDB header: transcriptionChain: A: PDB Molecule: two-component system response regulator;
PDBTitle: crystal structure of the n-terminal signal receiver domain of two-2 component system response regulator from bacteroides fragilis
35 d1kgsa2
not modelled
99.9
22
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
36 c3dzdA_
not modelled
99.9
23
PDB header: transcription regulatorChain: A: PDB Molecule: transcriptional regulator (ntrc family);
PDBTitle: crystal structure of sigma54 activator ntrc4 in the inactive2 state
37 c1rnlA_
not modelled
99.9
23
PDB header: signal transduction proteinChain: A: PDB Molecule: nitrate/nitrite response regulator protein narl;
PDBTitle: the nitrate/nitrite response regulator protein narl from narl
38 d2a9pa1
not modelled
99.9
20
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
39 d2ayxa1
not modelled
99.9
22
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
40 c2rjnA_
not modelled
99.9
20
PDB header: hydrolaseChain: A: PDB Molecule: response regulator receiver:metal-dependent
PDBTitle: crystal structure of an uncharacterized protein q2bku2 from2 neptuniibacter caesariensis
41 d1peya_
not modelled
99.9
22
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
42 c3crnA_
not modelled
99.9
23
PDB header: signaling proteinChain: A: PDB Molecule: response regulator receiver domain protein, chey-like;
PDBTitle: crystal structure of response regulator receiver domain protein (chey-2 like) from methanospirillum hungatei jf-1
43 d1mvoa_
not modelled
99.9
21
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
44 c3cfyA_
not modelled
99.9
23
PDB header: structural genomics, unknown functionChain: A: PDB Molecule: putative luxo repressor protein;
PDBTitle: crystal structure of signal receiver domain of putative luxo2 repressor protein from vibrio parahaemolyticus
45 c3h1gA_
not modelled
99.9
23
PDB header: signaling proteinChain: A: PDB Molecule: chemotaxis protein chey homolog;
PDBTitle: crystal structure of chey mutant t84a of helicobacter pylori
46 d1w25a1
not modelled
99.9
20
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
47 d1heya_
not modelled
99.9
22
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
48 c2zwmA_
not modelled
99.9
21
PDB header: transcriptionChain: A: PDB Molecule: transcriptional regulatory protein yycf;
PDBTitle: crystal structure of yycf receiver domain from bacillus2 subtilis
49 d1dbwa_
not modelled
99.9
22
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
50 d1k66a_
not modelled
99.9
18
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
51 c3cnbC_
not modelled
99.9
18
PDB header: dna binding proteinChain: C: PDB Molecule: dna-binding response regulator, merr family;
PDBTitle: crystal structure of signal receiver domain of dna binding response2 regulator protein (merr) from colwellia psychrerythraea 34h
52 c3hebB_
not modelled
99.9
19
PDB header: transcription regulatorChain: B: PDB Molecule: response regulator receiver domain protein (chey);
PDBTitle: crystal structure of response regulator receiver domain from2 rhodospirillum rubrum
53 c2hqrA_
not modelled
99.9
15
PDB header: signaling proteinChain: A: PDB Molecule: putative transcriptional regulator;
PDBTitle: structure of a atypical orphan response regulator protein revealed a2 new phosphorylation-independent regulatory mechanism
54 c3gt7A_
not modelled
99.9
21
PDB header: hydrolaseChain: A: PDB Molecule: sensor protein;
PDBTitle: crystal structure of signal receiver domain of signal2 transduction histidine kinase from syntrophus3 aciditrophicus
55 d2r25b1
not modelled
99.9
20
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
56 d1zh2a1
not modelled
99.9
25
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
57 d1krwa_
not modelled
99.9
24
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
58 d1p6qa_
not modelled
99.9
26
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
59 d1yioa2
not modelled
99.9
22
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
60 c2qzjC_
not modelled
99.9
24
PDB header: transcriptionChain: C: PDB Molecule: two-component response regulator;
PDBTitle: crystal structure of a two-component response regulator from2 clostridium difficile
61 c3hdgE_
not modelled
99.9
26
PDB header: structural genomics, unknown functionChain: E: PDB Molecule: uncharacterized protein;
PDBTitle: crystal structure of the n-terminal domain of an2 uncharacterized protein (ws1339) from wolinella3 succinogenes
62 c3cg0A_
not modelled
99.9
24
PDB header: lyaseChain: A: PDB Molecule: response regulator receiver modulated diguanylate cyclase
PDBTitle: crystal structure of signal receiver domain of modulated diguanylate2 cyclase from desulfovibrio desulfuricans g20, an example of alternate3 folding
63 d1zesa1
not modelled
99.9
22
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
64 c3hv2B_
not modelled
99.9
17
PDB header: signaling proteinChain: B: PDB Molecule: response regulator/hd domain protein;
PDBTitle: crystal structure of signal receiver domain of hd domain-2 containing protein from pseudomonas fluorescens pf-5
65 c3nhzA_
not modelled
99.9
25
PDB header: dna binding proteinChain: A: PDB Molecule: two component system transcriptional regulator mtra;
PDBTitle: structure of n-terminal domain of mtra
66 c3f6cB_
not modelled
99.9
16
PDB header: dna binding proteinChain: B: PDB Molecule: positive transcription regulator evga;
PDBTitle: crystal structure of n-terminal domain of positive transcription2 regulator evga from escherichia coli
67 c2qvgA_
not modelled
99.9
21
PDB header: transferaseChain: A: PDB Molecule: two component response regulator;
PDBTitle: the crystal structure of a two-component response regulator2 from legionella pneumophila
68 c3khtA_
not modelled
99.9
17
PDB header: signaling proteinChain: A: PDB Molecule: response regulator;
PDBTitle: crystal structure of response regulator from hahella chejuensis
69 c3kcnA_
not modelled
99.9
18
PDB header: lyaseChain: A: PDB Molecule: adenylate cyclase homolog;
PDBTitle: the crystal structure of adenylate cyclase from2 rhodopirellula baltica
70 c3t8yA_
not modelled
99.9
26
PDB header: hydrolaseChain: A: PDB Molecule: chemotaxis response regulator protein-glutamate
PDBTitle: crystal structure of the response regulator domain of thermotoga2 maritima cheb
71 c2jk1A_
not modelled
99.9
18
PDB header: dna-bindingChain: A: PDB Molecule: hydrogenase transcriptional regulatory protein hupr1;
PDBTitle: crystal structure of the wild-type hupr receiver domain
72 d1zgza1
not modelled
99.9
25
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
73 c2zayA_
not modelled
99.9
22
PDB header: signaling proteinChain: A: PDB Molecule: response regulator receiver protein;
PDBTitle: crystal structure of response regulator from desulfuromonas2 acetoxidans
74 c3c3mA_
not modelled
99.9
21
PDB header: signaling proteinChain: A: PDB Molecule: response regulator receiver protein;
PDBTitle: crystal structure of the n-terminal domain of response regulator2 receiver protein from methanoculleus marisnigri jr1
75 c3hzhA_
not modelled
99.9
25
PDB header: signaling proteinChain: A: PDB Molecule: chemotaxis response regulator (chey-3);
PDBTitle: crystal structure of the chex-chey-bef3-mg+2 complex from2 borrelia burgdorferi
76 c3t6kB_
not modelled
99.9
21
PDB header: signaling proteinChain: B: PDB Molecule: response regulator receiver;
PDBTitle: crystal structure of a hypothetical response regulator (caur_3799)2 from chloroflexus aurantiacus j-10-fl at 1.86 a resolution
77 d1i3ca_
not modelled
99.9
16
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
78 d1xhfa1
not modelled
99.9
20
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
79 c3mmnA_
not modelled
99.9
15
PDB header: transferaseChain: A: PDB Molecule: histidine kinase homolog;
PDBTitle: crystal structure of the receiver domain of the histidine kinase cki12 from arabidopsis thaliana complexed with mg2+
80 d1p2fa2
not modelled
99.9
18
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
81 d1a2oa1
not modelled
99.9
25
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
82 c3lteH_
not modelled
99.9
24
PDB header: transcriptionChain: H: PDB Molecule: response regulator;
PDBTitle: crystal structure of response regulator (signal receiver domain) from2 bermanella marisrubri
83 c3ilhA_
not modelled
99.9
24
PDB header: transcription regulatorChain: A: PDB Molecule: two component response regulator;
PDBTitle: crystal structure of two component response regulator from cytophaga2 hutchinsonii
84 c3m6mF_
not modelled
99.9
23
PDB header: lyase/transferaseChain: F: PDB Molecule: sensory/regulatory protein rpfc;
PDBTitle: crystal structure of rpff complexed with rec domain of rpfc
85 c3hdvB_
not modelled
99.9
30
PDB header: transcription regulatorChain: B: PDB Molecule: response regulator;
PDBTitle: crystal structure of response regulator receiver protein from2 pseudomonas putida
86 c3luaA_
not modelled
99.9
24
PDB header: transcription regulatorChain: A: PDB Molecule: response regulator receiver protein;
PDBTitle: crystal structure of a signal receiver domain of two component signal2 transduction (histidine kinase) from clostridium thermocellum
87 c2qxyB_
not modelled
99.9
24
PDB header: transcriptionChain: B: PDB Molecule: response regulator;
PDBTitle: crystal structure of a response regulator from thermotoga2 maritima
88 c3snkA_
not modelled
99.9
15
PDB header: signaling proteinChain: A: PDB Molecule: response regulator chey-like protein;
PDBTitle: crystal structure of a response regulator chey-like protein (mll6475)2 from mesorhizobium loti at 2.02 a resolution
89 c2rdmB_
not modelled
99.9
21
PDB header: structural genomics, unknown functionChain: B: PDB Molecule: response regulator receiver protein;
PDBTitle: crystal structure of response regulator receiver protein from2 sinorhizobium medicae wsm419
90 d1k68a_
not modelled
99.9
16
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
91 c3gl9B_
not modelled
99.9
25
PDB header: signaling proteinChain: B: PDB Molecule: response regulator;
PDBTitle: the structure of a histidine kinase-response regulator2 complex sheds light into two-component signaling and3 reveals a novel cis autophosphorylation mechanism
92 c3eqzB_
not modelled
99.9
24
PDB header: structural genomics, unknown functionChain: B: PDB Molecule: response regulator;
PDBTitle: crystal structure of a response regulator from colwellia2 psychrerythraea
93 c3cg4A_
not modelled
99.9
22
PDB header: structural genomics, unknown functionChain: A: PDB Molecule: response regulator receiver domain protein (chey-like);
PDBTitle: crystal structure of response regulator receiver domain protein (chey-2 like) from methanospirillum hungatei jf-1
94 d1mb3a_
not modelled
99.9
22
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
95 d1w25a2
not modelled
99.9
21
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
96 c3nhmA_
not modelled
99.9
22
PDB header: signaling proteinChain: A: PDB Molecule: response regulator;
PDBTitle: crystal structure of a response regulator from myxococcus xanthus
97 d2b4aa1
not modelled
99.9
17
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: CheY-related
98 d1dcfa_
not modelled
99.9
15
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: Receiver domain of the ethylene receptor
99 c2hqoA_
not modelled
99.9
17
PDB header: signaling proteinChain: A: PDB Molecule: putative transcriptional regulator;
PDBTitle: structure of a atypical orphan response regulator protein revealed a2 new phosphorylation-independent regulatory mechanism
100 c3i42A_
not modelled
99.9
18
PDB header: structural genomics, unknown functionChain: A: PDB Molecule: response regulator receiver domain protein (chey-
PDBTitle: structure of response regulator receiver domain (chey-like)2 from methylobacillus flagellatus
101 d1qo0d_
not modelled
99.9
12
Fold: Flavodoxin-likeSuperfamily: CheY-likeFamily: Positive regulator of the amidase operon AmiR
102 c2qsjB_
not modelled
99.9
21
PDB header: transcriptionChain: B: PDB Molecule: dna-binding response regulator, luxr family;
PDBTitle: crystal structure of a luxr family dna-binding response2 regulator from silicibacter pomeroyi
103 c3grcD_
not modelled
99.9
20
PDB header: transferaseChain: D: PDB Molecule: sensor protein, kinase;
PDBTitle: crystal structure of a sensor protein from polaromonas sp.2 js666
104 c3ktoA_
not modelled
99.9
15
PDB header: transcription regulatorChain: A: PDB Molecule: response regulator receiver protein;
PDBTitle: crystal structure of response regulator receiver protein2 from pseudoalteromonas atlantica
105 c3a0rB_
not modelled
99.9
21
PDB header: transferaseChain: B: PDB Molecule: response regulator;
PDBTitle: crystal structure of histidine kinase thka (tm1359) in complex with2 response regulator protein trra (tm1360)
106 c3n0rA_
not modelled
99.9
24
PDB header: signaling proteinChain: A: PDB Molecule: response regulator;
PDBTitle: structure of the phyr stress response regulator at 1.25 angstrom2 resolution
107 c3h5iA_
not modelled
99.9
18
PDB header: transcriptionChain: A: PDB Molecule: response regulator/sensory box protein/ggdef
PDBTitle: crystal structure of the n-terminal domain of a response2 regulator/sensory box/ggdef 3-domain protein from3 carboxydothermus hydrogenoformans
108 c3eodA_
not modelled
99.9
30
PDB header: signaling proteinChain: A: PDB Molecule: protein hnr;
PDBTitle: crystal structure of n-terminal domain of e. coli rssb
109 c3c97A_
not modelled
99.8
18
PDB header: signaling protein, transferaseChain: A: PDB Molecule: signal transduction histidine kinase;
PDBTitle: crystal structure of the response regulator receiver domain2 of a signal transduction histidine kinase from aspergillus3 oryzae
110 c2j48A_
not modelled
99.8
16
PDB header: transferaseChain: A: PDB Molecule: two-component sensor kinase;
PDBTitle: nmr structure of the pseudo-receiver domain of the cika2 protein.
111 c3lufB_
not modelled
99.8
21
PDB header: signaling proteinChain: B: PDB Molecule: two-component system response regulator/ggdef
PDBTitle: structure of probable two-component system response2 regulator/ggdef domain protein
112 c3kyiB_
not modelled
99.8
24
PDB header: transferaseChain: B: PDB Molecule: chey6 protein;
PDBTitle: crystal structure of the phosphorylated p1 domain of chea3 in complex2 with chey6 from r. sphaeroides
113 c2nt3A_
not modelled
99.8
21
PDB header: signaling proteinChain: A: PDB Molecule: response regulator homolog;
PDBTitle: receiver domain from myxococcus xanthus social motility protein frzs2 (y102a mutant)
114 c3n53B_
not modelled
99.8
24
PDB header: transcriptionChain: B: PDB Molecule: response regulator receiver modulated diguanylate cyclase;
PDBTitle: crystal structure of a response regulator receiver modulated2 diguanylate cyclase from pelobacter carbinolicus
115 c2yxbA_
not modelled
99.8
17
PDB header: isomeraseChain: A: PDB Molecule: coenzyme b12-dependent mutase;
PDBTitle: crystal structure of the methylmalonyl-coa mutase alpha-subunit from2 aeropyrum pernix
116 c3klnC_
not modelled
99.7
14
PDB header: transcriptionChain: C: PDB Molecule: transcriptional regulator, luxr family;
PDBTitle: vibrio cholerae vpst
117 c3cwoX_
not modelled
99.7
17
PDB header: de novo proteinChain: X: PDB Molecule: beta/alpha-barrel protein based on 1thf and 1tmy;
PDBTitle: a beta/alpha-barrel built by the combination of fragments2 from different folds
118 d1fmfa_
not modelled
99.4
15
Fold: Flavodoxin-likeSuperfamily: Cobalamin (vitamin B12)-binding domainFamily: Cobalamin (vitamin B12)-binding domain
119 c2vycA_
not modelled
98.1
18
PDB header: lyaseChain: A: PDB Molecule: biodegradative arginine decarboxylase;
PDBTitle: crystal structure of acid induced arginine decarboxylase2 from e. coli
120 c3fkqA_
not modelled
97.7
9
PDB header: structural genomics, unknown functionChain: A: PDB Molecule: ntrc-like two-domain protein;
PDBTitle: crystal structure of ntrc-like two-domain protein (rer070207001320)2 from eubacterium rectale at 2.10 a resolution