1 c2fb1A_
100.0
30
PDB header: structural genomics, unknown functionChain: A: PDB Molecule: conserved hypothetical protein;
PDBTitle: crystal structure of protein bt0354 from bacteroides thetaiotaomicron
2 c3gz6A_
100.0
29
PDB header: dna binding protein/dnaChain: A: PDB Molecule: mutt/nudix family protein;
PDBTitle: crystal structure of shewanella oneidensis nrtr complexed with a 27mer2 dna
3 c2fmlB_
100.0
28
PDB header: structural genomics, unknown functionChain: B: PDB Molecule: mutt/nudix family protein;
PDBTitle: crystal structure of mutt/nudix family protein from enterococcus2 faecalis
4 d2fmla2
100.0
32
Fold: NudixSuperfamily: NudixFamily: BT0354 N-terminal domain-like
5 d2fb1a2
100.0
27
Fold: NudixSuperfamily: NudixFamily: BT0354 N-terminal domain-like
6 d1q33a_
100.0
13
Fold: NudixSuperfamily: NudixFamily: MutT-like
7 c3gz8C_
100.0
33
PDB header: dna binding proteinChain: C: PDB Molecule: mutt/nudix family protein;
PDBTitle: cocrystal structure of nudix domain of shewanella oneidensis nrtr2 complexed with adp ribose
8 c3i9xA_
100.0
26
PDB header: hydrolaseChain: A: PDB Molecule: mutt/nudix family protein;
PDBTitle: crystal structure of a mutt/nudix family protein from listeria innocua
9 c2qjoB_
100.0
27
PDB header: transferase, hydrolaseChain: B: PDB Molecule: bifunctional nmn adenylyltransferase/nudix hydrolase;
PDBTitle: crystal structure of a bifunctional nmn adenylyltransferase/adp ribose2 pyrophosphatase (nadm) complexed with adprp and nad from3 synechocystis sp.
10 c2r5wA_
100.0
28
PDB header: hydrolase, transferaseChain: A: PDB Molecule: nicotinamide-nucleotide adenylyltransferase;
PDBTitle: crystal structure of a bifunctional nmn2 adenylyltransferase/adp ribose pyrophosphatase from3 francisella tularensis
11 c4zbpC_
100.0
19
PDB header: hydrolaseChain: C: PDB Molecule: nudix hydrolase 7;
PDBTitle: crystal structure of the ampcpr-bound atnudt7
12 c2yyhC_
99.9
20
PDB header: hydrolaseChain: C: PDB Molecule: 8-oxo-dgtpase domain;
PDBTitle: crystal structure of nudix family protein from aquifex aeolicus
13 d2fb1a1
99.9
36
Fold: DNA/RNA-binding 3-helical bundleSuperfamily: "Winged helix" DNA-binding domainFamily: Nudix-associated domain
14 c3h95A_
99.9
12
PDB header: gene regulationChain: A: PDB Molecule: nucleoside diphosphate-linked moiety x motif 6;
PDBTitle: crystal structure of the nudix domain of nudt6
15 c5bonC_
99.9
27
PDB header: hydrolaseChain: C: PDB Molecule: probable 8-oxo-dgtp diphosphatase nudt15;
PDBTitle: crystal structure of human nudt15 (mth2)
16 c3cngC_
99.9
22
PDB header: hydrolaseChain: C: PDB Molecule: nudix hydrolase;
PDBTitle: crystal structure of nudix hydrolase from nitrosomonas europaea
17 c2gb5B_
99.9
14
PDB header: hydrolaseChain: B: PDB Molecule: nadh pyrophosphatase;
PDBTitle: crystal structure of nadh pyrophosphatase (ec 3.6.1.22) (1790429) from2 escherichia coli k12 at 2.30 a resolution
18 c3exqA_
99.9
16
PDB header: hydrolaseChain: A: PDB Molecule: nudix family hydrolase;
PDBTitle: crystal structure of a nudix family hydrolase from2 lactobacillus brevis
19 c3fcmA_
99.9
17
PDB header: hydrolaseChain: A: PDB Molecule: hydrolase, nudix family;
PDBTitle: crystal structure of a nudix hydrolase from clostridium perfringens
20 d1irya_
99.9
18
Fold: NudixSuperfamily: NudixFamily: MutT-like
21 d2b0va1
not modelled
99.9
15
Fold: NudixSuperfamily: NudixFamily: MutT-like
22 c3q4iA_
not modelled
99.8
18
PDB header: hydrolaseChain: A: PDB Molecule: phosphohydrolase (mutt/nudix family protein);
PDBTitle: crystal structure of cdp-chase in complex with gd3+
23 c5gp0F_
not modelled
99.8
22
PDB header: hydrolaseChain: F: PDB Molecule: nudix hydrolase 1;
PDBTitle: crystal structure of geraniol-nudx1 complex
24 c4kyxA_
not modelled
99.8
16
PDB header: hydrolaseChain: A: PDB Molecule: adp-ribose pyrophosphatase mutt;
PDBTitle: crystal structure of adp-ribose pyrophosphatase mutt from rickettsia2 felis
25 d1k2ea_
not modelled
99.8
18
Fold: NudixSuperfamily: NudixFamily: MutT-like
26 c4dywA_
not modelled
99.8
22
PDB header: hydrolaseChain: A: PDB Molecule: mutt/nudix family protein;
PDBTitle: crystal structure of mutt nudix hydrolase from burkholderia2 pseudomallei
27 d1vk6a2
not modelled
99.8
13
Fold: NudixSuperfamily: NudixFamily: NADH pyrophosphatase
28 c4hfqB_
not modelled
99.8
17
PDB header: hydrolaseChain: B: PDB Molecule: mutt/nudix family protein;
PDBTitle: crystal structure of udp-x diphosphatase
29 d1ryaa_
not modelled
99.8
18
Fold: NudixSuperfamily: NudixFamily: GDP-mannose mannosyl hydrolase NudD
30 c3o8sA_
not modelled
99.8
18
PDB header: hydrolaseChain: A: PDB Molecule: adp-ribose pyrophosphatase;
PDBTitle: crystal structure of an adp-ribose pyrophosphatase (ssu98_1448) from2 streptococcus suis 89-1591 at 2.27 a resolution
31 d1ktga_
not modelled
99.8
15
Fold: NudixSuperfamily: NudixFamily: MutT-like
32 c2qkmF_
not modelled
99.8
15
PDB header: hydrolaseChain: F: PDB Molecule: spac19a8.12 protein;
PDBTitle: the crystal structure of fission yeast mrna decapping enzyme dcp1-dcp22 complex
33 c5cfiC_
not modelled
99.8
12
PDB header: hydrolaseChain: C: PDB Molecule: bis(5'-nucleosyl)-tetraphosphatase (diadenosine
PDBTitle: structural and functional attributes of malaria parasite ap4a2 hydrolase
34 c2fvvA_
not modelled
99.8
14
PDB header: hydrolaseChain: A: PDB Molecule: diphosphoinositol polyphosphate phosphohydrolase 1;
PDBTitle: human diphosphoinositol polyphosphate phosphohydrolase 1
35 d2fvva1
not modelled
99.8
14
Fold: NudixSuperfamily: NudixFamily: MutT-like
36 c2jvbA_
not modelled
99.8
13
PDB header: hydrolaseChain: A: PDB Molecule: mrna-decapping enzyme subunit 2;
PDBTitle: solution structure of catalytic domain of ydcp2
37 d1vcda1
not modelled
99.8
18
Fold: NudixSuperfamily: NudixFamily: MutT-like
38 c5gg7A_
not modelled
99.8
17
PDB header: hydrolaseChain: A: PDB Molecule: hydrolase, nudix family protein;
PDBTitle: crystal structure of mycobacterium smegmatis mutt1 in complex with 8-2 oxo-dgtp, 8-oxo-dgmp and pyrophosphate (i)
39 c2pq1B_
not modelled
99.8
15
PDB header: hydrolaseChain: B: PDB Molecule: ap4a hydrolase;
PDBTitle: crystal structure of ap4a hydrolase complexed with amp and2 atp (aq_158) from aquifex aeolicus vf5
40 c3gg6A_
not modelled
99.8
21
PDB header: hydrolaseChain: A: PDB Molecule: nucleoside diphosphate-linked moiety x motif 18;
PDBTitle: crystal structure of the nudix domain of human nudt18
41 c3hhjA_
not modelled
99.8
19
PDB header: hydrolaseChain: A: PDB Molecule: mutator mutt protein;
PDBTitle: crystal structure of mutator mutt from bartonella henselae
42 c3ef5A_
not modelled
99.8
15
PDB header: hydrolaseChain: A: PDB Molecule: probable pyrophosphohydrolase;
PDBTitle: structure of the rna pyrophosphohydrolase bdrpph in complex with dgtp
43 c5zrhA_
not modelled
99.8
20
PDB header: hydrolaseChain: A: PDB Molecule: putative mutator protein mutt2/nudix hydrolase;
PDBTitle: m. smegmatis antimutator protein mutt2 in complex with cmp
44 c3sonB_
not modelled
99.8
16
PDB header: hydrolaseChain: B: PDB Molecule: hypothetical nudix hydrolase;
PDBTitle: crystal structure of a putativel nudix hydrolase (lmof2365_2679) from2 listeria monocytogenes str. 4b f2365 at 1.70 a resolution
45 d1xsba_
not modelled
99.8
15
Fold: NudixSuperfamily: NudixFamily: MutT-like
46 d1sjya_
not modelled
99.8
16
Fold: NudixSuperfamily: NudixFamily: MutT-like
47 c3f6aA_
not modelled
99.8
21
PDB header: hydrolaseChain: A: PDB Molecule: hydrolase, nudix family;
PDBTitle: crystal structure of a hydrolase, nudix family from2 clostridium perfringens
48 c3fjyB_
not modelled
99.8
18
PDB header: hydrolaseChain: B: PDB Molecule: probable mutt1 protein;
PDBTitle: crystal structure of a probable mutt1 protein from bifidobacterium2 adolescentis
49 c2kdvA_
not modelled
99.8
16
PDB header: hydrolaseChain: A: PDB Molecule: rna pyrophosphohydrolase;
PDBTitle: solution structure of rna pyrophosphohydrolase rpph from2 escherichia coli
50 c3dkuB_
not modelled
99.8
12
PDB header: hydrolaseChain: B: PDB Molecule: putative phosphohydrolase;
PDBTitle: crystal structure of nudix hydrolase orf153, ymfb, from escherichia2 coli k-1
51 d2a6ta2
not modelled
99.8
18
Fold: NudixSuperfamily: NudixFamily: mRNA decapping enzyme-like
52 c6o3pA_
not modelled
99.8
17
PDB header: hydrolaseChain: A: PDB Molecule: peroxisomal nadh pyrophosphatase nudt12;
PDBTitle: crystal structure of the catalytic domain of mouse nudt12 in complex2 with amp and 3 mg2+ ions
53 c2rrkA_
not modelled
99.7
17
PDB header: hydrolaseChain: A: PDB Molecule: ctp pyrophosphohydrolase;
PDBTitle: solution structure of the e. coli orf135 protein
54 c4v14A_
not modelled
99.7
14
PDB header: hydrolaseChain: A: PDB Molecule: mutator mutt protein;
PDBTitle: structure and function analysis of mutt from the2 psychrofile fish pathogen aliivibrio salmonicida and the3 mesophile vibrio cholerae
55 c3fk9B_
not modelled
99.7
19
PDB header: hydrolaseChain: B: PDB Molecule: mutator mutt protein;
PDBTitle: crystal structure of mmutator mutt protein from bacillus halodurans
56 d2b06a1
not modelled
99.7
16
Fold: NudixSuperfamily: NudixFamily: MutT-like
57 c3r03B_
not modelled
99.7
24
PDB header: hydrolaseChain: B: PDB Molecule: nudix hydrolase;
PDBTitle: the crystal structure of nudix hydrolase from rhodospirillum rubrum
58 d2azwa1
not modelled
99.7
18
Fold: NudixSuperfamily: NudixFamily: MutT-like
59 c3edsA_
not modelled
99.7
20
PDB header: hydrolaseChain: A: PDB Molecule: mutt/nudix family protein;
PDBTitle: crystal structure of a mut/nudix family protein from bacillus2 thuringiensis
60 c4ilqA_
not modelled
99.7
17
PDB header: hydrolaseChain: A: PDB Molecule: ct771;
PDBTitle: 2.60a resolution structure of ct771 from chlamydia trachomatis
61 c5mp0D_
not modelled
99.7
16
PDB header: hydrolaseChain: D: PDB Molecule: m7gpppn-mrna hydrolase;
PDBTitle: human m7gpppn-mrna hydrolase (dcp2, nudt20) catalytic domain
62 d1puna_
not modelled
99.7
16
Fold: NudixSuperfamily: NudixFamily: MutT-like
63 c3grnB_
not modelled
99.7
16
PDB header: hydrolaseChain: B: PDB Molecule: mutt related protein;
PDBTitle: crystal structure of mutt protein from methanosarcina mazei go1
64 c4jztA_
not modelled
99.7
16
PDB header: hydrolaseChain: A: PDB Molecule: dgtp pyrophosphohydrolase;
PDBTitle: crystal structure of the bacillus subtilis pyrophosphohydrolase bsrpph2 (e68a mutant) bound to gtp
65 d1nqza_
not modelled
99.7
21
Fold: NudixSuperfamily: NudixFamily: MutT-like
66 d1vhza_
not modelled
99.7
12
Fold: NudixSuperfamily: NudixFamily: MutT-like
67 c3f13A_
not modelled
99.7
17
PDB header: hydrolaseChain: A: PDB Molecule: putative nudix hydrolase family member;
PDBTitle: crystal structure of putative nudix hydrolase family member from2 chromobacterium violaceum
68 c3gwyA_
not modelled
99.7
16
PDB header: hydrolaseChain: A: PDB Molecule: putative ctp pyrophosphohydrolase;
PDBTitle: crystal structure of putative ctp pyrophosphohydrolase from2 bacteroides fragilis
69 c5lopA_
not modelled
99.7
16
PDB header: rna binding proteinChain: A: PDB Molecule: klla0f23980p;
PDBTitle: structure of the active form of /k. lactis/ dcp1-dcp2-edc3 decapping2 complex bound to m7gdp
70 c2w4eA_
not modelled
99.7
20
PDB header: hydrolaseChain: A: PDB Molecule: mutt/nudix family protein;
PDBTitle: structure of an n-terminally truncated nudix hydrolase2 dr2204 from deinococcus radiodurans
71 d1u20a1
not modelled
99.7
13
Fold: NudixSuperfamily: NudixFamily: MutT-like
72 c2yvoA_
not modelled
99.7
15
PDB header: hydrolaseChain: A: PDB Molecule: mutt/nudix family protein;
PDBTitle: crystal structure of ndx2 in complex with mg2+ and amp from thermus2 thermophilus hb8
73 c3n77B_
not modelled
99.7
18
PDB header: hydrolaseChain: B: PDB Molecule: nucleoside triphosphatase nudi;
PDBTitle: crystal structure of idp01880, putative ntp pyrophosphohydrolase of2 salmonella typhimurium lt2
74 c2o1cB_
not modelled
99.7
15
PDB header: hydrolaseChain: B: PDB Molecule: datp pyrophosphohydrolase;
PDBTitle: structure of the e. coli dihydroneopterin triphosphate2 pyrophosphohydrolase
75 c5c7tB_
not modelled
99.7
10
PDB header: hydrolaseChain: B: PDB Molecule: nudf protein;
PDBTitle: crystal structure of the bdellovibrio bacteriovorus nucleoside2 diphosphate sugar hydrolase in complex with adp-ribose
76 d1jkna_
not modelled
99.7
12
Fold: NudixSuperfamily: NudixFamily: MutT-like
77 c5x1xA_
not modelled
99.7
15
PDB header: hydrolaseChain: A: PDB Molecule: mutator mutt protein;
PDBTitle: solution nmr structure of dna mismatch repair protein mutt (family2 nudix hydrolase) from methicillin resistant staphylococcus aureus 252
78 d2fkba1
not modelled
99.7
14
Fold: NudixSuperfamily: NudixFamily: IPP isomerase-like
79 c2pqvA_
not modelled
99.7
21
PDB header: structural genomics, unknown functionChain: A: PDB Molecule: mutt/nudix family protein;
PDBTitle: crystal structure of mutt/nudix family protein from streptococcus2 pneumoniae
80 c3id9B_
not modelled
99.6
23
PDB header: hydrolaseChain: B: PDB Molecule: mutt/nudix family protein;
PDBTitle: crystal structure of a mutt/nudix family protein from2 bacillus thuringiensis
81 d1g0sa_
not modelled
99.6
15
Fold: NudixSuperfamily: NudixFamily: MutT-like
82 c5lf8A_
not modelled
99.6
22
PDB header: hydrolaseChain: A: PDB Molecule: nucleoside diphosphate-linked moiety x motif 17;
PDBTitle: human nucleoside diphosphate-linked moiety x motif 17 (nudt17)
83 d1hzta_
not modelled
99.6
14
Fold: NudixSuperfamily: NudixFamily: IPP isomerase-like
84 c3rh7A_
not modelled
99.6
17
PDB header: oxidoreductaseChain: A: PDB Molecule: hypothetical oxidoreductase;
PDBTitle: crystal structure of a putative oxidoreductase (sma0793) from2 sinorhizobium meliloti 1021 at 3.00 a resolution
85 c5t3pB_
not modelled
99.6
21
PDB header: hydrolaseChain: B: PDB Molecule: peroxisomal coenzyme a diphosphatase nudt7;
PDBTitle: crystal structure of human peroxisomal coenzyme a diphosphatase nudt7
86 c3bm4B_
not modelled
99.6
14
PDB header: hydrolaseChain: B: PDB Molecule: adp-sugar pyrophosphatase;
PDBTitle: crystal structure of human adp-ribose pyrophosphatase nudt5 in complex2 with magnesium and ampcpr
87 d1v8ya_
not modelled
99.6
17
Fold: NudixSuperfamily: NudixFamily: MutT-like
88 d1ppva_
not modelled
99.5
13
Fold: NudixSuperfamily: NudixFamily: IPP isomerase-like
89 c3e57A_
not modelled
99.5
15
PDB header: structural genomics, unknown functionChain: A: PDB Molecule: uncharacterized protein tm1382;
PDBTitle: crystal structure of tm1382, a putative nudix hydrolase
90 d2o5fa1
not modelled
99.5
13
Fold: NudixSuperfamily: NudixFamily: IPP isomerase-like
91 d1x51a1
not modelled
99.5
15
Fold: NudixSuperfamily: NudixFamily: MutY C-terminal domain-like
92 d1mqea_
not modelled
99.4
17
Fold: NudixSuperfamily: NudixFamily: MutT-like
93 d1viua_
not modelled
99.4
11
Fold: NudixSuperfamily: NudixFamily: MutT-like
94 c3q91D_
not modelled
99.3
12
PDB header: hydrolaseChain: D: PDB Molecule: uridine diphosphate glucose pyrophosphatase;
PDBTitle: crystal structure of human uridine diphosphate glucose pyrophosphatase2 (nudt14)
95 c2j8qB_
not modelled
99.3
20
PDB header: nuclear proteinChain: B: PDB Molecule: cleavage and polyadenylation specificity factor 5;
PDBTitle: crystal structure of human cleavage and polyadenylation2 specificity factor 5 (cpsf5) in complex with a sulphate3 ion.
96 d1rrqa2
not modelled
99.3
16
Fold: NudixSuperfamily: NudixFamily: MutY C-terminal domain-like
97 c1rrqA_
not modelled
99.3
16
PDB header: hydrolase/dnaChain: A: PDB Molecule: muty;
PDBTitle: muty adenine glycosylase in complex with dna containing an2 a:oxog pair
98 c2i6kA_
not modelled
99.0
15
PDB header: isomeraseChain: A: PDB Molecule: isopentenyl-diphosphate delta-isomerase 1;
PDBTitle: crystal structure of human type i ipp isomerase complexed with a2 substrate analog
99 c3dupB_
not modelled
99.0
19
PDB header: hydrolaseChain: B: PDB Molecule: mutt/nudix family protein;
PDBTitle: crystal structure of mutt/nudix family hydrolase from rhodospirillum2 rubrum atcc 11170
100 c4v1aj_
not modelled
99.0
13
PDB header: ribosomeChain: J: PDB Molecule:
PDBTitle: structure of the large subunit of the mammalian mitoribosome, part 22 of 2
101 c3qsjA_
not modelled
98.9
32
PDB header: hydrolaseChain: A: PDB Molecule: nudix hydrolase;
PDBTitle: crystal structure of nudix hydrolase from alicyclobacillus2 acidocaldarius
102 c5lf9A_
not modelled
98.8
14
PDB header: transferaseChain: A: PDB Molecule: nucleoside diphosphate-linked moiety x motif 22;
PDBTitle: crystal structure of human nudt22
103 c2pnyA_
not modelled
98.8
12
PDB header: isomeraseChain: A: PDB Molecule: isopentenyl-diphosphate delta-isomerase 2;
PDBTitle: structure of human isopentenyl-diphosphate delta-isomerase 2
104 c4ktbA_
not modelled
98.7
16
PDB header: unknown functionChain: A: PDB Molecule: putative uncharacterized protein;
PDBTitle: the crystal structure of posible asymmetric diadenosine tetraphosphate2 (ap(4)a) hydrolases from jonesia denitrificans dsm 20603
105 d2fmla1
not modelled
98.6
22
Fold: DNA/RNA-binding 3-helical bundleSuperfamily: "Winged helix" DNA-binding domainFamily: Nudix-associated domain
106 c3couA_
not modelled
98.4
22
PDB header: hydrolaseChain: A: PDB Molecule: nucleoside diphosphate-linked moiety x motif 16;
PDBTitle: crystal structure of human nudix motif 16 (nudt16)
107 c6drkD_
not modelled
98.1
17
PDB header: transport proteinChain: D: PDB Molecule: transient receptor potential cation channel, subfamily m,
PDBTitle: structure of trpm2 ion channel receptor by single particle electron2 cryo-microscopy, apo state
108 c6mizC_
not modelled
97.8
19
PDB header: membrane proteinChain: C: PDB Molecule: transient receptor potential cation channel subfamily m
PDBTitle: human trpm2 ion channel in an adpr-bound state
109 c3kvhA_
not modelled
97.6
26
PDB header: rna binding proteinChain: A: PDB Molecule: protein syndesmos;
PDBTitle: crystal structure of human protein syndesmos (nudt16-like protein)
110 c6d73B_
not modelled
96.9
17
PDB header: transport proteinChain: B: PDB Molecule: transient receptor potential cation channel, subfamily m;
PDBTitle: cryo-em structure of the zebrafish trpm2 channel in the presence of2 ca2+
111 c3p5tE_
not modelled
96.8
25
PDB header: rna binding proteinChain: E: PDB Molecule: cleavage and polyadenylation specificity factor subunit 5;
PDBTitle: cfim25-cfim68 complex
112 c1vw46_
not modelled
93.8
18
PDB header: ribosomeChain: 6: PDB Molecule: 54s ribosomal protein l17, mitochondrial;
PDBTitle: structure of the yeast mitochondrial large ribosomal subunit
113 d1z05a1
not modelled
84.7
30
Fold: DNA/RNA-binding 3-helical bundleSuperfamily: "Winged helix" DNA-binding domainFamily: ROK associated domain
114 c1z05A_
not modelled
68.7
26
PDB header: transcriptionChain: A: PDB Molecule: transcriptional regulator, rok family;
PDBTitle: crystal structure of the rok family transcriptional regulator, homolog2 of e.coli mlc protein.
115 c6d73C_
not modelled
61.9
20
PDB header: transport proteinChain: C: PDB Molecule: transient receptor potential cation channel, subfamily m;
PDBTitle: cryo-em structure of the zebrafish trpm2 channel in the presence of2 ca2+
116 c4i98C_
not modelled
57.1
30
PDB header: cell cycleChain: C: PDB Molecule: segregation and condensation protein b;
PDBTitle: crystal structure of the complex between scpa(residues 1-160)-2 scpb(residues 1-183)
117 d1b79a_
not modelled
55.8
18
Fold: N-terminal domain of DnaB helicaseSuperfamily: N-terminal domain of DnaB helicaseFamily: N-terminal domain of DnaB helicase
118 c3w6jC_
not modelled
55.2
28
PDB header: cell cycleChain: C: PDB Molecule: scpb;
PDBTitle: crystal structure of scpab core complex
119 c1t6sB_
not modelled
55.0
26
PDB header: structural genomics, unknown functionChain: B: PDB Molecule: conserved hypothetical protein;
PDBTitle: crystal structure of a conserved hypothetical protein from chlorobium2 tepidum
120 d2irfg_
not modelled
49.6
15
Fold: DNA/RNA-binding 3-helical bundleSuperfamily: "Winged helix" DNA-binding domainFamily: Interferon regulatory factor