_EC 1.3.1.- With NAD(+) or NADP(+) as acceptor. 343 PDB entries  
EC 1.-.-.- Oxidoreductases. [8,653 PDB entries]
EC 1.3.-.- Acting on the CH-CH group of donors. [662 PDB entries]
EC 1.3.1.- With NAD(+) or NADP(+) as acceptor. [343 PDB entries]    
EC 1.3.1.1 Dihydrouracil dehydrogenase (NAD(+)). [-]
EC 1.3.1.2 Dihydropyrimidine dehydrogenase (NADP(+)). [5 PDB entries]
EC 1.3.1.3 Delta(4)-3-oxosteroid 5-beta-reductase. [16 PDB entries]
EC 1.3.1.4 Transferred entry: 1.3.1.22. [-]
EC 1.3.1.5 Cucurbitacin Delta(23)-reductase. [-]
EC 1.3.1.6 Fumarate reductase (NADH). [-]
EC 1.3.1.7 Meso-tartrate dehydrogenase. [-]
EC 1.3.1.8 Acyl-CoA dehydrogenase (NADP(+)). [-]
EC 1.3.1.9 Enoyl-[acyl-carrier-protein] reductase (NADH). [126 PDB entries]
EC 1.3.1.10 Enoyl-[acyl-carrier-protein] reductase (Nadph, Si-specific). [5 PDB entries]
EC 1.3.1.11 2-coumarate reductase. [-]
EC 1.3.1.12 Prephenate dehydrogenase. [2 PDB entries]
EC 1.3.1.13 Prephenate dehydrogenase (NADP(+)). [-]
EC 1.3.1.14 Dihydroorotate dehydrogenase (NAD(+)). [3 PDB entries]
EC 1.3.1.15 Dihydroorotate dehydrogenase (NADP(+)). [-]
EC 1.3.1.16 Beta-nitroacrylate reductase. [-]
EC 1.3.1.17 3-methyleneoxindole reductase. [-]
EC 1.3.1.18 Kynurenate-7,8-dihydrodiol dehydrogenase. [-]
EC 1.3.1.19 Cis-1,2-dihydrobenzene-1,2-diol dehydrogenase. [-]
EC 1.3.1.20 Trans-1,2-dihydrobenzene-1,2-diol dehydrogenase. [45 PDB entries]
EC 1.3.1.21 7-dehydrocholesterol reductase. [-]
EC 1.3.1.22 3-oxo-5-alpha-steroid 4-dehydrogenase (NADP(+)). [-]
EC 1.3.1.23 Deleted entry. [-]
EC 1.3.1.24 Biliverdin reductase. [9 PDB entries]
EC 1.3.1.25 1,6-dihydroxycyclohexa-2,4-diene-1-carboxylate dehydrogenase. [-]
EC 1.3.1.26 Transferred entry: 1.17.1.8. [-]
EC 1.3.1.27 2-hexadecenal reductase. [-]
EC 1.3.1.28 2,3-dihydro-2,3-dihydroxybenzoate dehydrogenase. [1 PDB entries]
EC 1.3.1.29 Cis-1,2-dihydro-1,2-dihydroxynaphthalene dehydrogenase. [-]
EC 1.3.1.30 Transferred entry: 1.3.1.22. [-]
EC 1.3.1.31 2-enoate reductase. [-]
EC 1.3.1.32 Maleylacetate reductase. [1 PDB entries]
EC 1.3.1.33 Protochlorophyllide reductase. [-]
EC 1.3.1.34 2,4-dienoyl-CoA reductase (NADPH). [6 PDB entries]
EC 1.3.1.35 Phosphatidylcholine desaturase. [-]
EC 1.3.1.36 Geissoschizine dehydrogenase. [-]
EC 1.3.1.37 Cis-2-enoyl-CoA reductase (NADPH). [-]
EC 1.3.1.38 Trans-2-enoyl-CoA reductase (NADPH). [8 PDB entries]
EC 1.3.1.39 Enoyl-[acyl-carrier-protein] reductase (Nadph, Re-specific). [31 PDB entries]
EC 1.3.1.40 2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoate reductase. [-]
EC 1.3.1.41 Xanthommatin reductase. [-]
EC 1.3.1.42 12-oxophytodienoate reductase. [14 PDB entries]
EC 1.3.1.43 Arogenate dehydrogenase. [-]
EC 1.3.1.44 Trans-2-enoyl-CoA reductase (NAD(+)). [-]
EC 1.3.1.45 2'-hydroxyisoflavone reductase. [1 PDB entries]
EC 1.3.1.46 Biochanin-A reductase. [-]
EC 1.3.1.47 Alpha-santonin 1,2-reductase. [-]
EC 1.3.1.48 15-oxoprostaglandin 13-oxidase. [14 PDB entries]
EC 1.3.1.49 Cis-3,4-dihydrophenanthrene-3,4-diol dehydrogenase. [-]
EC 1.3.1.50 Transferred entry: 1.1.1.252. [-]
EC 1.3.1.51 2'-hydroxydaidzein reductase. [-]
EC 1.3.1.52 Transferred entry: 1.3.8.5. [-]
EC 1.3.1.53 (3S,4R)-3,4-dihydroxycyclohexa-1,5-diene-1,4-dicarboxylate dehydrogenase. [-]
EC 1.3.1.54 Precorrin-6A reductase. [-]
EC 1.3.1.55 Deleted entry. [-]
EC 1.3.1.56 Cis-2,3-dihydrobiphenyl-2,3-diol dehydrogenase. [7 PDB entries]
EC 1.3.1.57 Phloroglucinol reductase. [-]
EC 1.3.1.58 2,3-dihydroxy-2,3-dihydro-p-cumate dehydrogenase. [-]
EC 1.3.1.59 Deleted entry. [-]
EC 1.3.1.60 Dibenzothiophene dihydrodiol dehydrogenase. [-]
EC 1.3.1.61 Deleted entry. [-]
EC 1.3.1.62 Pimeloyl-CoA dehydrogenase. [-]
EC 1.3.1.63 2,4-dichlorobenzoyl-CoA reductase. [-]
EC 1.3.1.64 Phthalate 4,5-cis-dihydrodiol dehydrogenase. [-]
EC 1.3.1.65 5,6-dihydroxy-3-methyl-2-oxo-1,2,5,6-tetrahydroquinoline dehydrogenase. [-]
EC 1.3.1.66 Cis-dihydroethylcatechol dehydrogenase. [-]
EC 1.3.1.67 Cis-1,2-dihydroxy-4-methylcyclohexa-3,5-diene-1-carboxylate [-]
EC 1.3.1.68 1,2-dihydroxy-6-methylcyclohexa-3,5-dienecarboxylate dehydrogenase. [-]
EC 1.3.1.69 Zeatin reductase. [-]
EC 1.3.1.70 Delta(14)-sterol reductase. [-]
EC 1.3.1.71 Delta(24(24(1)))-sterol reductase. [-]
EC 1.3.1.72 Delta(24)-sterol reductase. [-]
EC 1.3.1.73 1,2-dihydrovomilenine reductase. [-]
EC 1.3.1.74 2-alkenal reductase (NAD(P)(+)). [10 PDB entries]
EC 1.3.1.75 Divinyl chlorophyllide a 8-vinyl-reductase. [-]
EC 1.3.1.76 Precorrin-2 dehydrogenase. [5 PDB entries]
EC 1.3.1.77 Anthocyanidin reductase. [-]
EC 1.3.1.78 Arogenate dehydrogenase (NADP(+)). [-]
EC 1.3.1.79 Arogenate dehydrogenase (NAD(P)(+)). [-]
EC 1.3.1.80 Red chlorophyll catabolite reductase. [5 PDB entries]
EC 1.3.1.81 (+)-pulegone reductase. [-]
EC 1.3.1.82 (-)-isopiperitenone reductase. [-]
EC 1.3.1.83 Geranylgeranyl diphosphate reductase. [-]
EC 1.3.1.84 Acrylyl-CoA reductase (NADPH). [2 PDB entries]
EC 1.3.1.85 Crotonyl-CoA carboxylase/reductase. [-]
EC 1.3.1.86 Crotonyl-CoA reductase. [1 PDB entries]
EC 1.3.1.87 3-(cis-5,6-dihydroxycyclohexa-1,3-dien-1-yl)propanoate dehydrogenase. [-]
EC 1.3.1.88 tRNA-dihydrouridine(16/17) synthase (NAD(P)(+)). [-]
EC 1.3.1.89 tRNA-dihydrouridine(47) synthase (NAD(P)(+)). [-]
EC 1.3.1.90 tRNA-dihydrouridine(20a/20b) synthase (NAD(P)(+)). [-]
EC 1.3.1.91 tRNA-dihydrouridine(20) synthase (NAD(P)(+)). [-]
EC 1.3.1.92 Artemisinic aldehyde Delta(11(13)) reductase. [-]
EC 1.3.1.93 Very-long-chain enoyl-CoA reductase. [1 PDB entries]
EC 1.3.1.94 Polyprenol reductase. [-]
EC 1.3.1.95 Acryloyl-CoA reductase (NADH). [-]
EC 1.3.1.96 Botryococcus squalene synthase. [-]
EC 1.3.1.97 Botryococcene synthase. [-]
EC 1.3.1.98 UDP-N-acetylmuramate dehydrogenase. [13 PDB entries]
EC 1.3.1.99 Iridoid synthase. [-]
EC 1.3.1.100 Chanoclavine-I aldehyde reductase. [-]
EC 1.3.1.101 2,3-bis-O-geranylgeranyl-sn-glycerol 1-phosphate reductase (NAD(P)H). [1 PDB entries]
EC 1.3.1.102 2-alkenal reductase (NADP(+)). [3 PDB entries]
EC 1.3.1.103 2-haloacrylate reductase. [-]
EC 1.3.1.104 Enoyl-[acyl-carrier-protein] reductase. [2 PDB entries]
EC 1.3.1.105 2-methylene-furan-3-one reductase. [6 PDB entries]
EC 1.3.1.106 Cobalt-precorrin-6A reductase. [-]
EC 1.3.1.n1 Transferred entry: 1.3.1.87. [-]

[-] signifies that there are no PDB entries for the given enzyme subclass