_EC 3.1.1.- Carboxylic ester hydrolases. 961 PDB entries  
EC 3.-.-.- Hydrolases. [21,057 PDB entries]
EC 3.1.-.- Acting on ester bonds. [5,979 PDB entries]
EC 3.1.1.- Carboxylic ester hydrolases. [961 PDB entries]    
EC 3.1.1.1 Carboxylesterase. [41 PDB entries]
EC 3.1.1.2 Arylesterase. [11 PDB entries]
EC 3.1.1.3 Triacylglycerol lipase. [109 PDB entries]
EC 3.1.1.4 Phospholipase A(2). [262 PDB entries]
EC 3.1.1.5 Lysophospholipase. [8 PDB entries]
EC 3.1.1.6 Acetylesterase. [6 PDB entries]
EC 3.1.1.7 Acetylcholinesterase. [176 PDB entries]
EC 3.1.1.8 Cholinesterase. [38 PDB entries]
EC 3.1.1.9 Deleted entry. [-]
EC 3.1.1.10 Tropinesterase. [-]
EC 3.1.1.11 Pectinesterase. [10 PDB entries]
EC 3.1.1.12 Transferred entry: 3.1.1.1. [-]
EC 3.1.1.13 Sterol esterase. [6 PDB entries]
EC 3.1.1.14 Chlorophyllase. [-]
EC 3.1.1.15 L-arabinonolactonase. [-]
EC 3.1.1.16 Transferred entry: 3.1.1.24 and 5.3.3.4. [-]
EC 3.1.1.17 Gluconolactonase. [12 PDB entries]
EC 3.1.1.18 Transferred entry: 3.1.1.17. [-]
EC 3.1.1.19 Uronolactonase. [-]
EC 3.1.1.20 Tannase. [-]
EC 3.1.1.21 Deleted entry. [-]
EC 3.1.1.22 Hydroxybutyrate-dimer hydrolase. [-]
EC 3.1.1.23 Acylglycerol lipase. [12 PDB entries]
EC 3.1.1.24 3-oxoadipate enol-lactonase. [1 PDB entries]
EC 3.1.1.25 1,4-lactonase. [-]
EC 3.1.1.26 Galactolipase. [3 PDB entries]
EC 3.1.1.27 4-pyridoxolactonase. [3 PDB entries]
EC 3.1.1.28 Acylcarnitine hydrolase. [-]
EC 3.1.1.29 Aminoacyl-tRNA hydrolase. [47 PDB entries]
EC 3.1.1.30 D-arabinonolactonase. [-]
EC 3.1.1.31 6-phosphogluconolactonase. [9 PDB entries]
EC 3.1.1.32 Phospholipase A(1). [11 PDB entries]
EC 3.1.1.33 6-acetylglucose deacetylase. [-]
EC 3.1.1.34 Lipoprotein lipase. [-]
EC 3.1.1.35 Dihydrocoumarin hydrolase. [-]
EC 3.1.1.36 Limonin-D-ring-lactonase. [-]
EC 3.1.1.37 Steroid-lactonase. [-]
EC 3.1.1.38 Triacetate-lactonase. [-]
EC 3.1.1.39 Actinomycin lactonase. [-]
EC 3.1.1.40 Orsellinate-depside hydrolase. [-]
EC 3.1.1.41 Cephalosporin-C deacetylase. [7 PDB entries]
EC 3.1.1.42 Chlorogenate hydrolase. [-]
EC 3.1.1.43 Alpha-amino-acid esterase. [5 PDB entries]
EC 3.1.1.44 4-methyloxaloacetate esterase. [-]
EC 3.1.1.45 Carboxymethylenebutenolidase. [12 PDB entries]
EC 3.1.1.46 Deoxylimonate A-ring-lactonase. [-]
EC 3.1.1.47 1-alkyl-2-acetylglycerophosphocholine esterase. [16 PDB entries]
EC 3.1.1.48 Fusarinine-C ornithinesterase. [-]
EC 3.1.1.49 Sinapine esterase. [-]
EC 3.1.1.50 Wax-ester hydrolase. [-]
EC 3.1.1.51 Phorbol-diester hydrolase. [-]
EC 3.1.1.52 Phosphatidylinositol deacylase. [-]
EC 3.1.1.53 Sialate O-acetylesterase. [7 PDB entries]
EC 3.1.1.54 Acetoxybutynylbithiophene deacetylase. [-]
EC 3.1.1.55 Acetylsalicylate deacetylase. [-]
EC 3.1.1.56 Methylumbelliferyl-acetate deacetylase. [16 PDB entries]
EC 3.1.1.57 2-pyrone-4,6-dicarboxylate lactonase. [5 PDB entries]
EC 3.1.1.58 N-acetylgalactosaminoglycan deacetylase. [-]
EC 3.1.1.59 Juvenile-hormone esterase. [-]
EC 3.1.1.60 Bis(2-ethylhexyl)phthalate esterase. [-]
EC 3.1.1.61 Protein-glutamate methylesterase. [5 PDB entries]
EC 3.1.1.62 Transferred entry: 3.5.1.47. [-]
EC 3.1.1.63 11-cis-retinyl-palmitate hydrolase. [-]
EC 3.1.1.64 Retinoid isomerohydrolase. [6 PDB entries]
EC 3.1.1.65 L-rhamnono-1,4-lactonase. [-]
EC 3.1.1.66 5-(3,4-diacetoxybut-1-ynyl)-2,2'-bithiophene deacetylase. [-]
EC 3.1.1.67 Fatty-acyl-ethyl-ester synthase. [-]
EC 3.1.1.68 Xylono-1,4-lactonase. [-]
EC 3.1.1.69 Transferred entry: 3.5.1.89. [-]
EC 3.1.1.70 Cetraxate benzylesterase. [-]
EC 3.1.1.71 Acetylalkylglycerol acetylhydrolase. [-]
EC 3.1.1.72 Acetylxylan esterase. [14 PDB entries]
EC 3.1.1.73 Feruloyl esterase. [7 PDB entries]
EC 3.1.1.74 Cutinase. [55 PDB entries]
EC 3.1.1.75 Poly(3-hydroxybutyrate) depolymerase. [1 PDB entries]
EC 3.1.1.76 Poly(3-hydroxyoctanoate) depolymerase. [-]
EC 3.1.1.77 Acyloxyacyl hydrolase. [1 PDB entries]
EC 3.1.1.78 Polyneuridine-aldehyde esterase. [3 PDB entries]
EC 3.1.1.79 Hormone-sensitive lipase. [-]
EC 3.1.1.80 Acetylajmaline esterase. [-]
EC 3.1.1.81 Quorum-quenching N-acyl-homoserine lactonase. [10 PDB entries]
EC 3.1.1.82 Pheophorbidase. [-]
EC 3.1.1.83 Monoterpene epsilon-lactone hydrolase. [-]
EC 3.1.1.84 Cocaine esterase. [14 PDB entries]
EC 3.1.1.85 Pimeloyl-[acyl-carrier protein] methyl ester esterase. [3 PDB entries]
EC 3.1.1.86 Rhamnogalacturonan acetylesterase. [5 PDB entries]
EC 3.1.1.87 Fumonisin B1 esterase. [-]
EC 3.1.1.88 Pyrethroid hydrolase. [-]
EC 3.1.1.89 Protein phosphatase methylesterase-1. [2 PDB entries]
EC 3.1.1.90 All-trans-retinyl ester 13-cis isomerohydrolase. [-]
EC 3.1.1.91 2-oxo-3-(5-oxofuran-2-ylidene)propanoate lactonase. [-]
EC 3.1.1.92 4-sulfomuconolactone hydrolase. [-]
EC 3.1.1.93 Mycophenolic acid acyl-glucuronide esterase. [-]
EC 3.1.1.94 Versiconal hemiacetal acetate esterase. [-]
EC 3.1.1.95 Aclacinomycin methylesterase. [2 PDB entries]
EC 3.1.1.n1 Transferred entry: 3.5.1.103. [-]

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