| PSCID | Protein Name | Free form | Bound form | Ligands | Classification(?) |
| CL.1 | CAPSID PROTEIN P40 | 1wpo_AB | 1njt_AB | 2xPEPT(VDNA) | 003000 |
| CL.2 | GTPASE/ATPASE | 2qm8_AB | 2qm7_AB | 2xGDP | 002400 |
| CL.3 | PROTEIN-ARGININE DEIMINASE TYPE IV | 1wd8_AA | 1wd9_AA | 8xCA | 002300 |
| CL.4 | INTERFERON-INDUCED GUANYLATE-BINDING PROTEIN 1 | 1dg3_A | 1f5n_A | GNP,MG | 002200 |
| CL.5 | ENOLASE | 3enl_AA | 2one_AB | 2PG,2xMG,PEP | 002100 |
| CL.6 | PHOSPHORIBOSYLFORMYLGLYCINAMIDINE SYNTHASE II | 1vk3_A | 2hs4_A | ACP,FGR,2xMG | 002100 |
| CL.7 | PYRUVATE DEHYDROGENASE E1 COMPONENT | 2g67_AB | 2g25_AB | 2xMG,2xTDK | 002100 |
| CL.8 | SPERMIDINE SYNTHASE | 3bwb_AB | 3bwc_AB | 2xSAM | 002100 |
| CL.9 | BETA-1,4-XYLOGLUCAN HYDROLASE | 2cn2_C | 2cn3_A | 5xBGC,CA,GLC,4xXYS | 002001 |
| CL.10 | PHOSPHOTYROSINE PROTEIN PHOSPHATASE PTPB | 1ywf_A | 2oz5_B | 2x7XY | 002000 |
| CL.11 | ESTROGEN-RELATED RECEPTOR GAMMA | 2gp7_CD | 2gpu_AA | 2xOHT | 002000 |
| CL.12 | CYCLOPROPANE-FATTY-ACYL-PHOSPHOLIPID SYNTHASE 1 | 1kp9_A | 1kph_C | 10A,SAH | 002000 |
| CL.13 | HEME-DEGRADING MONOOXYGENASE ISDI | 1sqe_AB | 2zdp_AB | 2xCOH | 002000 |
| CL.14 | PROTEIN-TYROSINE PHOSPHATASE, NON-RECEPTOR TYPE 1 | 1pa1_A | 1t48_A | BB3 | 002000 |
| CL.15 | SIALIDASE 2 | 1so7_A | 1vcu_B | DAN | 002000 |
| CL.16 | DIBENZOTHIOPHENE DESULFURIZATION ENZYME B | 2de2_A | 2de3_B | OBP | 002000 |
| CL.17 | NAD-DEPENDENT FORMATE DEHYDROGENASE | 2go1_AA | 2nad_AB | 2xNAD | 002000 |
| CL.18 | PYRROLYSYL-TRNA SYNTHETASE | 2e3c_AA | 2zim_AA | 2xPOP,2xYLY | 002000 |
| CL.19 | HEME OXYGENASE 1 | 1irm_C | 2dy5_A | 224,HEM | 002000 |
| CL.20 | CYANOBACTERIAL PHYCOERYTHROBILIN | 2vcl_A | 2vck_B | BLA | 002000 |
| CL.21 | PYRUVATE DEHYDROGENASE KINASE ISOENZYME 2 | 2btz_AA | 2bu2_AA | 2xATP,2xTF1 | 002000 |
| CL.22 | ENDOGLYCOCERAMIDASE II | 2osw_A | 2osx_A | 16C,GAL,GLC,SIA | 002000 |
| CL.23 | ASPARAGINYL-TRNA SYNTHETASE | 1x56_AA | 1x55_AA | 2xNSS | 002000 |
| CL.24 | PHOSPHO-2-DEHYDRO-3-DEOXYHEPTONATE ALDOLASE | 1ofp_AB | 1of6_EF | 2xDTY,2xMN | 001600 |
| CL.25 | COPROPORPHYRINOGEN III OXIDASE | 2qt8_AB | 3dwr_AB | 6x0PA | 001301 |
| CL.26 | RNA URIDYLYL TRANSFERASE | 2q0d_B | 2q0e_A | GTP,MG | 001300 |
| CL.27 | PENICILLIN-BINDING PROTEIN 2X | 1qme_A | 1pyy_A | OSU | 001300 |
| CL.28 | OROTIDINE 5'-PHOSPHATE DECARBOXYLASE | 2zcg_AB | 2za1_AB | 2xOMP | 001300 |
| CL.29 | FRUCTOSE-BISPHOSPHATE ALDOLASE II | 1gyn_AA | 1zen_AA | 4xZN | 001200 |
| CL.30 | SIGNAL PEPTIDASE I | 1kn9_B | 1b12_A | 1PN | 001200 |
| CL.31 | E3 UBIQUITIN-PROTEIN LIGASE NEDD4 | 3b7y_B | 3b7y_A | 2xCA | 001200 |
| CL.32 | MODULATOR OF DRUG ACTIVITY B | 2amj_CD | 2b3d_AB | 2xFAD | 001200 |
| CL.33 | PHOSPHOACETYLGLUCOSAMINE MUTASE | 2dka_A | 2dkc_B | 16G,ZN | 001101 |
| CL.34 | TRICHOTHECENE 3-O-ACETYLTRANSFERASE | 2rkt_A | 2rkv_A | COA,MPO,ZBA | 001101 |
| CL.35 | COMPLEMENT FACTOR D | 1fdp_A | 1bio_A | SOA | 001100 |
| CL.36 | N-ACETYLLACTOSAMINIDE ALPHA-1,3-GALACTOSYLTRANSFERASE | 2vxm_A | 2jcj_A | MN,UDP | 001100 |
| CL.37 | PYRIDOXAL KINASE | 1lhp_AB | 1rft_AA | 2xACP,2xPXM | 001100 |
| CL.38 | PYRIDOXINE 5'-PHOSPHATE OXIDASE | 1xxo_AB | 2aq6_AB | PLP | 001100 |
| CL.39 | MYOGLOBIN | 1ufp_A | 2eb8_A | CUP | 001100 |
| CL.40 | TELOMERIC REPEAT BINDING FACTOR 1 | 1h6o_AA | 3bqo_AA | 2xPEPT(SHFNLAPLGRRRV) | 001100 |
| CL.41 | GANGLIOSIDE GM2 ACTIVATOR | 1pu5_A | 2ag4_B | LP3,OLA | 001100 |
| CL.42 | RIBONUCLEOTIDE REDUCTASE PROTEIN R1 | 1rlr_A | 2r1r_C | PEPT(SEVDTDDLSNFQL),TTP | 001100 |
| CL.43 | IRON(III) DICITRATE TRANSPORT PROTEIN FECA | 1pnz_A | 1kmp_A | FDC,16xLDA | 001100 |
| CL.44 | 8-AMINO-7-OXONONANOATE SYNTHASE | 1bs0_AA | 1dj9_AA | 2xKAM,2xMG | 001100 |
| CL.45 | INOSITOL MONOPHOSPHATASE | 1imf_AA | 1ime_AB | 2xCA | 001100 |
| CL.46 | BETA-SECRETASE 1 | 1sgz_B | 2f3e_C | AXQ | 001100 |
| CL.47 | TRIOSEPHOSPHATE ISOMERASE | 1mss_B | 1ttj_A | PGH | 001100 |
| CL.48 | PANTOTHENATE SYNTHETASE | 1n2o_AB | 2a86_AB | 2xAMP | 001100 |
| CL.49 | PMS1 PROTEIN HOMOLOG 2 | 1h7s_A | 1ea6_B | ADP | 001100 |
| CL.50 | PROTEIN BUG27 | 2qpq_B | 2qpq_A | CIT | 001100 |
| CL.51 | ALKALINE PHOSPHATASE | 1aja_AB | 1elz_AB | 2xMG,4xZN | 001100 |
| CL.52 | ANTHRANILATE PHOSPHORIBOSYLTRANSFERASE | 1zvw_B | 1zvw_A | BAM,2xMG,PRP | 001100 |
| CL.53 | GTP-BINDING PROTEIN LEPA | 2ywe_A | 2ywf_A | GNP | 001100 |
| CL.54 | ASPARTATE BETA-SEMIALDEHYDE DEHYDROGENASE | 2gyy_AB | 2gz1_AB | 2xNAP | 001002 |
| CL.55 | PANTOTHENATE KINASE | 2f9t_AB | 2f9w_AB | 2xPAU | 001001 |
| CL.56 | 1-DEOXY-D-XYLULOSE-5-PHOSPHATE REDUCTOISOMERASE | 1k5h_AA | 1q0q_AB | 2xDXP,2xNDP | 001000 |
| CL.57 | SHIKIMATE KINASE | 2iyt_A | 2iyx_A | MG,SKM | 001000 |
| CL.58 | D-ALANINE:D-ALANINE LIGASE | 2fb9_AA | 2zdq_AB | 2xATP | 001000 |
| CL.59 | ARABINOSE OPERON REGULATORY PROTEIN | 1xja_EE | 2aac_AB | 2xFCB | 001000 |
| CL.60 | BETA-1,4-GALACTOSYLTRANSFERASE 1 | 1pzt_A | 1o0r_A | GDU,MN | 001000 |
| CL.61 | ARYLALKYLAMINE N-ACETYLTRANSFERASE | 1b6b_A | 1cjw_A | COT | 001000 |
| CL.62 | ANTIGEN 85-C | 1dqz_B | 1dqy_A | DEP | 001000 |
| CL.63 | CHEMOSENSORY PROTEIN A6 | 1kx9_A | 1n8v_B | 3xBDD | 001000 |
| CL.64 | HYDROGENASE EXPRESSION/FORMATION PROTEIN HYPC | 2z1c_A | 2z1c_B | PG4 | 001000 |
| CL.65 | TETRACENOMYCIN POLYKETIDE SYNTHESIS PROTEIN | 2gu9_AB | 2ilb_AA | 2xZN | 001000 |
| CL.66 | SHIKIMATE KINASE | 1zuh_A | 1zui_A | SKM | 001000 |
| CL.67 | STAPHYLOCOCCAL ENTEROTOXIN B | 3seb_A | 1se3_A | SIA | 001000 |
| CL.68 | CATECHOL O-METHYLTRANSFERASE | 2zlb_A | 2cl5_B | 2xBIE,MG,SAM | 001000 |
| CL.69 | PEPTIDE METHIONINE SULFOXIDE REDUCTASE MSRA/MSRB | 3bqh_A | 3bqf_A | SSM | 001000 |
| CL.70 | PEROXISOME PROLIFERATOR-ACTIVATED RECEPTOR GAMMA | 2f4b_B | 2om9_A | 3xAJA | 001000 |
| CL.71 | ARSENATE REDUCTASE | 1jfv_A | 1rxe_A | MNB | 001000 |
| CL.72 | PENICILLIN-BINDING PROTEIN 5 | 1nzu_A | 3bec_A | HJ2 | 001000 |
| CL.73 | GALECTIN | 1ww7_BC | 1ww4_AD | 2xGAL,2xGLC,2xSIA | 001000 |
| CL.74 | DIADENOSINE TETRAPHOSPHATE HYDROLASE | 1kt9_A | 1ktg_A | AMP,2xMG | 001000 |
| CL.75 | DTDP-6-DEOXY-D-XYLO-4-HEXULOSE 3,5-EPIMERASE | 1nxm_AB | 2ixl_AB | 2xTRH | 001000 |
| CL.76 | PROTEIN PHOSPHATASE 2A, REGULATORY SUBUNIT B | 2hv6_B | 2hv7_E | ADP | 001000 |
| CL.77 | DNA PACKAGING PROTEIN GP17 | 2o0k_A | 2o0j_A | ADP | 001000 |
| CL.78 | 17BETA-HYDROXYSTEROID DEHYDROGENASE | 1bhs_AA | 1i5r_AA | 2xHYC | 001000 |
| CL.79 | LIPASE | 1tib_A | 1ein_B | PLC | 001000 |
| CL.80 | 3-DEHYDROQUINATE DEHYDRATASE | 1gqn_AA | 1l9w_CD | 2xDHS | 001000 |
| CL.81 | ALPHA-AMYLASE | 1vjs_A | 1bli_A | 3xCA | 001000 |
| CL.82 | PROTEIN L | 1hz6_A | 1k52_B | 2xZN | 001000 |
| CL.83 | GDP-MANNOSE MANNOSYL HYDROLASE | 2gt2_CD | 1rya_AB | 2xGDP,2xMG | 001000 |
| CL.84 | PROLINE-TRNA LIGASE | 2i4l_CC | 2i4n_AB | 2x5CA | 001000 |
| CL.85 | ASPARAGINE OXYGENASE | 2og6_A | 2og7_A | AHB,SIN | 001000 |
| CL.86 | CELLULAR TUMOR ANTIGEN P53 | 2p52_A | 2iom_A | ZN | 001000 |
| CL.87 | PHOSPHOSERINE PHOSPHATASE | 1l7o_B | 1l7p_B | SEP | 001000 |
| CL.88 | STAPHYLOCOCCAL NUCLEASE | 1ey0_A | 1stb_A | CA,THP | 001000 |
| CL.89 | ANNEXIN GH1 | 1n00_A | 3brx_A | 3xCA | 001000 |
| CL.90 | BETA-LACTOGLOBULIN | 1bsq_A | 2gj5_A | 2xVD3 | 001000 |
| CL.91 | AZURIN | 1r1c_C | 1r1c_A | REP | 001000 |
| CL.92 | 27.5 KDA VIRULENCE PROTEIN | 2z8n_B | 2z8p_A | PEPT(GEAVATY) | 001000 |
| CL.93 | SORTASE | 1t2w_C | 1t2w_A | GLU,PRO,THR | 001000 |
| CL.94 | ALPHA-L-ARABINOFURANOSIDASE | 2vrk_A | 2vrq_B | AHR,3xXYP | 001000 |
| CL.95 | SCO1 PROTEIN | 2b7k_B | 2b7j_C | 2xCU | 001000 |
| CL.96 | ALDEHYDE REDUCTASE II | 1ujm_B | 1y1p_A | AMP,NMN | 001000 |
| CL.97 | N-ACETYL-BETA-D-GLUCOSAMINIDASE | 2epl_XX | 2epn_AB | 2xNGT | 001000 |
| CL.98 | UNCHARACTERIZED PROTEIN | 2r4i_CD | 2r4i_AB | CIT | 001000 |
| CL.99 | MALATE DEHYDROGENASE, GLYOXYSOMAL | 1smk_AB | 1smk_CD | CIT | 001000 |
| CL.100 | THYMIDYLATE SYNTHASE | 2rda_EF | 1juj_CD | 2xLYA,2xUMP | 001000 |
| CL.101 | PHOSPHOINOSITIDE-SPECIFIC PHOSPHOLIPASE C, ISOZYME DELTA1 | 1qat_A | 1djz_B | 2xCA,IP2 | 001000 |
| CL.102 | BETA-AMYLASE | 1wdp_A | 1q6f_A | 2xGLC | 001000 |
| CL.103 | TRIOSEPHOSPHATE ISOMERASE GLYCOSOMAL | 2j24_AB | 2j27_AB | 2xPGA | 001000 |
| CL.104 | LL-DIAMINOPIMELATE AMINOTRANSFERASE | 3ei7_AB | 2z1z_AB | MLT,2xPLP | 001000 |
| CL.105 | DEHYDROSQUALENE SYNTHASE | 2zco_A | 2zcq_A | B65,2xMG | 001000 |
| CL.106 | XYLOSE REDUCTASE | 1jez_AB | 1k8c_CD | 2xNAP | 001000 |
| CL.107 | GLYCEROL-3-PHOSPHATE DEHYDROGENASE [NAD+], CYTOPLASMIC | 1x0v_AB | 1wpq_AB | 2x13P,2xNAD | 001000 |
| CL.108 | LIPASE A | 1i6w_B | 1r4z_A | RIL | 001000 |
| CL.109 | PHOSPHOLIPASE D | 2ze4_A | 2ze9_A | PD7 | 001000 |
| CL.110 | LEUCYL/PHENYLALANYL-TRNA--PROTEIN TRANSFERASE | 2dps_B | 2dpt_B | PUY,TAR | 001000 |
| CL.111 | RIBONUCLEASE T1 | 1rn4_A | 2bir_A | 2GP | 001000 |
| CL.112 | RNA EDITING COMPLEX PROTEIN MP57 | 2b4v_A | 2b51_A | MN,3xUTP | 001000 |
| CL.113 | ORNITHINE DECARBOXYLASE | 2on3_AB | 2oo0_AB | 2xN2P,2xPLP | 001000 |
| CL.114 | ALPHA-D-GLUCURONIDASE | 1mqr_AA | 1mqq_AA | 2xGCU | 001000 |
| CL.115 | LEUCINE CARBOXYL METHYLTRANSFERASE 1 | 1rjf_C | 2ob2_B | SAH | 001000 |
| CL.116 | COPPER RESISTANCE PROTEIN C | 2c9r_A | 2c9p_C | 2xCU | 001000 |
| CL.117 | ALDOSE REDUCTASE | 2bgq_A | 2vdg_A | NDP | 001000 |
| CL.118 | PEPTIDE AMIDASE | 1m22_A | 1m21_A | CHY | 001000 |
| CL.119 | GLUCOSAMINE--FRUCTOSE-6-PHOSPHATE AMINOTRANSFERASE | 2vf4_X | 2vf5_X | GLP | 001000 |
| CL.120 | ALPHA-1,3-MANNOSYL-GLYCOPROTEIN BETA-1,2-N- ACETYLGLUCOSAMINYLTRANSFERASE | 1fo8_A | 1foa_A | UD1 | 001000 |
| CL.121 | 2-KETO-3-DEOXY-D-ARABINONATE DEHYDRATASE | 2q18_XX | 2q1c_XX | 2x2KT,2xCA | 001000 |
| CL.122 | RIO2 SERINE KINASE | 1tqi_A | 1zao_A | ATP,2xMN | 001000 |
| CL.123 | PHOSPHOMETHYLPYRIMIDINE KINASE | 1jxh_AB | 1jxi_AB | 2xHMH | 001000 |
| CL.124 | PHOSPHORIBOSYL ANTHRANILATE ISOMERASE | 1nsj_AA | 1lbm_AA | 2x137 | 001000 |
| CL.125 | IRON(III) ABC TRANSPORTER, PERIPLASMIC IRON- BINDING PROTEIN, PUTATIVE | 2etv_B | 2etv_A | NI | 001000 |