3IAQ
E. coli (lacz) beta-galactosidase (E416V)
Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0000287 | molecular_function | magnesium ion binding |
| A | 0003824 | molecular_function | catalytic activity |
| A | 0004553 | molecular_function | hydrolase activity, hydrolyzing O-glycosyl compounds |
| A | 0004565 | molecular_function | beta-galactosidase activity |
| A | 0005975 | biological_process | carbohydrate metabolic process |
| A | 0005990 | biological_process | lactose catabolic process |
| A | 0009341 | cellular_component | beta-galactosidase complex |
| A | 0016798 | molecular_function | hydrolase activity, acting on glycosyl bonds |
| A | 0030246 | molecular_function | carbohydrate binding |
| A | 0031420 | molecular_function | alkali metal ion binding |
| A | 0042802 | molecular_function | identical protein binding |
| A | 0046872 | molecular_function | metal ion binding |
| B | 0000287 | molecular_function | magnesium ion binding |
| B | 0003824 | molecular_function | catalytic activity |
| B | 0004553 | molecular_function | hydrolase activity, hydrolyzing O-glycosyl compounds |
| B | 0004565 | molecular_function | beta-galactosidase activity |
| B | 0005975 | biological_process | carbohydrate metabolic process |
| B | 0005990 | biological_process | lactose catabolic process |
| B | 0009341 | cellular_component | beta-galactosidase complex |
| B | 0016798 | molecular_function | hydrolase activity, acting on glycosyl bonds |
| B | 0030246 | molecular_function | carbohydrate binding |
| B | 0031420 | molecular_function | alkali metal ion binding |
| B | 0042802 | molecular_function | identical protein binding |
| B | 0046872 | molecular_function | metal ion binding |
| C | 0000287 | molecular_function | magnesium ion binding |
| C | 0003824 | molecular_function | catalytic activity |
| C | 0004553 | molecular_function | hydrolase activity, hydrolyzing O-glycosyl compounds |
| C | 0004565 | molecular_function | beta-galactosidase activity |
| C | 0005975 | biological_process | carbohydrate metabolic process |
| C | 0005990 | biological_process | lactose catabolic process |
| C | 0009341 | cellular_component | beta-galactosidase complex |
| C | 0016798 | molecular_function | hydrolase activity, acting on glycosyl bonds |
| C | 0030246 | molecular_function | carbohydrate binding |
| C | 0031420 | molecular_function | alkali metal ion binding |
| C | 0042802 | molecular_function | identical protein binding |
| C | 0046872 | molecular_function | metal ion binding |
| D | 0000287 | molecular_function | magnesium ion binding |
| D | 0003824 | molecular_function | catalytic activity |
| D | 0004553 | molecular_function | hydrolase activity, hydrolyzing O-glycosyl compounds |
| D | 0004565 | molecular_function | beta-galactosidase activity |
| D | 0005975 | biological_process | carbohydrate metabolic process |
| D | 0005990 | biological_process | lactose catabolic process |
| D | 0009341 | cellular_component | beta-galactosidase complex |
| D | 0016798 | molecular_function | hydrolase activity, acting on glycosyl bonds |
| D | 0030246 | molecular_function | carbohydrate binding |
| D | 0031420 | molecular_function | alkali metal ion binding |
| D | 0042802 | molecular_function | identical protein binding |
| D | 0046872 | molecular_function | metal ion binding |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE MG A 3001 |
| Chain | Residue |
| A | ASP15 |
| A | ASN18 |
| A | VAL21 |
| A | GLN163 |
| A | ASP193 |
| site_id | AC2 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE MG A 3002 |
| Chain | Residue |
| A | PRO596 |
| A | ASN597 |
| site_id | AC3 |
| Number of Residues | 1 |
| Details | BINDING SITE FOR RESIDUE MG A 3003 |
| Chain | Residue |
| A | GLN718 |
| site_id | AC4 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE NA A 3101 |
| Chain | Residue |
| A | TYR559 |
| A | PRO560 |
| A | LEU562 |
| A | HOH4260 |
| A | HOH4466 |
| A | PHE556 |
| site_id | AC5 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE NA A 3102 |
| Chain | Residue |
| A | PHE931 |
| A | PRO932 |
| A | LEU967 |
| A | THR970 |
| A | HOH4146 |
| A | HOH4413 |
| site_id | AC6 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE NA A 3103 |
| Chain | Residue |
| A | ASP201 |
| A | TRP568 |
| A | PHE601 |
| A | ASN604 |
| A | HOH4037 |
| A | BTB6001 |
| site_id | AC7 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE DMS A 7001 |
| Chain | Residue |
| A | THR229 |
| A | VAL330 |
| A | GLY331 |
| A | ARG333 |
| A | ASN449 |
| A | PRO451 |
| A | ARG482 |
| site_id | AC8 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS A 7002 |
| Chain | Residue |
| A | ARG557 |
| A | HIS622 |
| A | GLN623 |
| A | GLN625 |
| A | GLN628 |
| site_id | AC9 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE DMS A 7003 |
| Chain | Residue |
| A | LYS380 |
| A | ASN383 |
| A | PHE384 |
| A | PHE626 |
| A | TYR642 |
| A | TRP708 |
| site_id | BC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS A 7004 |
| Chain | Residue |
| A | ALA34 |
| A | TRP36 |
| A | ASP45 |
| A | ALA327 |
| A | DMS7016 |
| site_id | BC2 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS A 7005 |
| Chain | Residue |
| A | GLY270 |
| A | THR271 |
| A | THR290 |
| A | LEU291 |
| A | ARG292 |
| site_id | BC3 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS A 7006 |
| Chain | Residue |
| A | ARG505 |
| A | GLU508 |
| A | PRO1001 |
| site_id | BC4 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS A 7007 |
| Chain | Residue |
| A | SER53 |
| A | LEU54 |
| A | ASN55 |
| site_id | BC5 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS A 7008 |
| Chain | Residue |
| A | GLU334 |
| A | VAL335 |
| A | PRO480 |
| A | HOH4149 |
| A | HOH4382 |
| site_id | BC6 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS A 7009 |
| Chain | Residue |
| A | PRO106 |
| A | ILE107 |
| site_id | BC7 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS A 7010 |
| Chain | Residue |
| A | ILE576 |
| A | PRO584 |
| A | TRP585 |
| A | SER586 |
| A | ARG973 |
| site_id | BC8 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS A 7011 |
| Chain | Residue |
| A | GLY276 |
| A | VAL289 |
| A | THR290 |
| A | HOH4439 |
| site_id | BC9 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS A 7012 |
| Chain | Residue |
| A | GLY593 |
| A | ASP594 |
| A | THR595 |
| A | HOH4232 |
| site_id | CC1 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS A 7013 |
| Chain | Residue |
| A | LYS621 |
| A | ILE714 |
| A | TRP717 |
| site_id | CC2 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE DMS A 7014 |
| Chain | Residue |
| A | ASP428 |
| A | PRO430 |
| A | HOH4304 |
| D | HIS226 |
| D | ARG448 |
| D | VAL478 |
| site_id | CC3 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS A 7015 |
| Chain | Residue |
| A | HIS93 |
| A | GLY94 |
| site_id | CC4 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS A 7016 |
| Chain | Residue |
| A | ASP45 |
| A | PRO47 |
| A | HOH4346 |
| A | DMS7004 |
| site_id | CC5 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS A 7017 |
| Chain | Residue |
| A | GLU57 |
| A | LEU125 |
| A | THR126 |
| site_id | CC6 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS A 7018 |
| Chain | Residue |
| A | VAL267 |
| A | ALA268 |
| A | SER269 |
| A | GLN266 |
| site_id | CC7 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS A 7019 |
| Chain | Residue |
| A | ARG37 |
| A | GLN50 |
| A | TRP133 |
| A | GLU136 |
| A | HIS216 |
| site_id | CC8 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS A 7020 |
| Chain | Residue |
| A | VAL84 |
| A | VAL85 |
| A | HIS93 |
| site_id | CC9 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS A 7021 |
| Chain | Residue |
| A | HIS316 |
| A | GLY320 |
| A | THR321 |
| A | LEU322 |
| site_id | DC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS A 7022 |
| Chain | Residue |
| A | ARG230 |
| A | PHE231 |
| A | ASN232 |
| A | ARG237 |
| A | ALA238 |
| site_id | DC2 |
| Number of Residues | 12 |
| Details | BINDING SITE FOR RESIDUE BTB A 6001 |
| Chain | Residue |
| A | ASN102 |
| A | ASP201 |
| A | HIS391 |
| A | HIS418 |
| A | ASN460 |
| A | GLU461 |
| A | TYR503 |
| A | GLU537 |
| A | HIS540 |
| A | TRP568 |
| A | NA3103 |
| A | HOH4196 |
| site_id | DC3 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS A 1024 |
| Chain | Residue |
| A | ARG282 |
| A | GLY284 |
| A | ALA286 |
| site_id | DC4 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE MG B 3001 |
| Chain | Residue |
| B | ASP15 |
| B | ASN18 |
| B | VAL21 |
| B | TYR161 |
| B | GLN163 |
| B | ASP193 |
| site_id | DC5 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE MG B 3002 |
| Chain | Residue |
| B | GLU369 |
| B | HOH4468 |
| B | HOH4495 |
| site_id | DC6 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE MG B 3003 |
| Chain | Residue |
| B | PRO596 |
| B | ASN597 |
| B | HOH4222 |
| B | HOH4281 |
| site_id | DC7 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE MG B 3004 |
| Chain | Residue |
| B | HIS622 |
| B | GLN718 |
| B | THR911 |
| site_id | DC8 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE NA B 3101 |
| Chain | Residue |
| B | PHE556 |
| B | TYR559 |
| B | PRO560 |
| B | LEU562 |
| B | HOH4261 |
| site_id | DC9 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE NA B 3102 |
| Chain | Residue |
| B | PHE931 |
| B | PRO932 |
| B | LEU967 |
| B | THR970 |
| site_id | EC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE NA B 3103 |
| Chain | Residue |
| B | SER647 |
| B | GLU650 |
| B | LEU670 |
| B | HOH4400 |
| B | DMS7014 |
| site_id | EC2 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE NA B 3104 |
| Chain | Residue |
| B | ASP201 |
| B | PHE601 |
| B | ASN604 |
| B | HOH4191 |
| site_id | EC3 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE DMS B 7001 |
| Chain | Residue |
| B | THR229 |
| B | ASP329 |
| B | VAL330 |
| B | GLY331 |
| B | ARG448 |
| B | ASN449 |
| B | PRO451 |
| B | ARG482 |
| site_id | EC4 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS B 7002 |
| Chain | Residue |
| B | ARG557 |
| B | HIS622 |
| B | GLN623 |
| B | GLN628 |
| site_id | EC5 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE DMS B 7003 |
| Chain | Residue |
| B | LYS380 |
| B | ASN383 |
| B | PHE626 |
| B | TYR642 |
| B | TRP708 |
| B | HOH4151 |
| site_id | EC6 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE DMS B 7004 |
| Chain | Residue |
| B | PHE33 |
| B | ALA34 |
| B | TRP36 |
| B | ASP45 |
| B | ARG310 |
| B | ALA327 |
| B | HOH4269 |
| B | DMS7015 |
| site_id | EC7 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS B 7005 |
| Chain | Residue |
| B | THR271 |
| B | LEU291 |
| B | ARG292 |
| site_id | EC8 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS B 7006 |
| Chain | Residue |
| B | GLU314 |
| B | HIS316 |
| B | GLY320 |
| site_id | EC9 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS B 7007 |
| Chain | Residue |
| B | LEU54 |
| B | ASN55 |
| B | GLU57 |
| B | LEU125 |
| B | HOH4644 |
| site_id | FC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS B 7008 |
| Chain | Residue |
| B | GLU334 |
| B | VAL335 |
| B | ARG336 |
| B | PRO480 |
| B | HOH4229 |
| site_id | FC2 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS B 7009 |
| Chain | Residue |
| B | PRO106 |
| B | TRP191 |
| site_id | FC3 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS B 7010 |
| Chain | Residue |
| B | ILE576 |
| B | PRO584 |
| B | TRP585 |
| B | SER586 |
| B | ARG973 |
| site_id | FC4 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS B 7011 |
| Chain | Residue |
| B | GLY275 |
| B | VAL289 |
| B | THR290 |
| B | ARG292 |
| site_id | FC5 |
| Number of Residues | 1 |
| Details | BINDING SITE FOR RESIDUE DMS B 7012 |
| Chain | Residue |
| B | ASP428 |
| site_id | FC6 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS B 7013 |
| Chain | Residue |
| B | HIS93 |
| B | GLY94 |
| B | TYR95 |
| site_id | FC7 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS B 7014 |
| Chain | Residue |
| B | GLU650 |
| B | PRO703 |
| B | NA3103 |
| site_id | FC8 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS B 7015 |
| Chain | Residue |
| B | TRP36 |
| B | ASP45 |
| B | ARG46 |
| B | SER48 |
| B | DMS7004 |
| site_id | FC9 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS B 7016 |
| Chain | Residue |
| B | GLU57 |
| B | SER124 |
| B | LEU125 |
| B | THR126 |
| site_id | GC1 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS B 7017 |
| Chain | Residue |
| B | GLN719 |
| B | ARG721 |
| site_id | GC2 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS B 7022 |
| Chain | Residue |
| B | SER132 |
| C | GLU41 |
| C | GLN49 |
| site_id | GC3 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS B 7018 |
| Chain | Residue |
| B | ARG230 |
| B | PHE231 |
| B | ASN232 |
| B | ARG237 |
| B | ALA238 |
| site_id | GC4 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS B 7019 |
| Chain | Residue |
| B | VAL85 |
| B | HIS93 |
| site_id | GC5 |
| Number of Residues | 1 |
| Details | BINDING SITE FOR RESIDUE DMS B 7020 |
| Chain | Residue |
| B | TYR962 |
| site_id | GC6 |
| Number of Residues | 13 |
| Details | BINDING SITE FOR RESIDUE BTB B 6001 |
| Chain | Residue |
| B | ASN102 |
| B | VAL103 |
| B | ASP201 |
| B | HIS418 |
| B | GLU461 |
| B | TYR503 |
| B | GLU537 |
| B | HIS540 |
| B | TRP568 |
| B | HOH4191 |
| B | HOH4507 |
| B | HOH4578 |
| B | HOH4579 |
| site_id | GC7 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS C 7021 |
| Chain | Residue |
| B | ARG425 |
| C | ASP287 |
| site_id | GC8 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE MG C 3001 |
| Chain | Residue |
| C | ASP15 |
| C | ASN18 |
| C | VAL21 |
| C | GLN163 |
| C | ASP193 |
| site_id | GC9 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE MG C 3002 |
| Chain | Residue |
| C | PRO596 |
| C | ASN597 |
| C | HOH4295 |
| site_id | HC1 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE MG C 3003 |
| Chain | Residue |
| C | GLN718 |
| C | THR911 |
| C | HOH4375 |
| C | DMS7025 |
| site_id | HC2 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE NA C 3101 |
| Chain | Residue |
| C | ASP201 |
| C | TRP568 |
| C | PHE601 |
| C | ASN604 |
| C | BTB6001 |
| site_id | HC3 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE NA C 3102 |
| Chain | Residue |
| C | PHE556 |
| C | TYR559 |
| C | PRO560 |
| C | LEU562 |
| C | HOH4269 |
| site_id | HC4 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE NA C 3103 |
| Chain | Residue |
| C | PHE931 |
| C | PRO932 |
| C | LEU967 |
| C | MET968 |
| C | THR970 |
| C | HOH4156 |
| C | HOH4338 |
| site_id | HC5 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE NA C 3104 |
| Chain | Residue |
| C | SER647 |
| C | GLU650 |
| C | LEU670 |
| C | DMS7018 |
| site_id | HC6 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE DMS C 7001 |
| Chain | Residue |
| C | THR229 |
| C | VAL330 |
| C | GLY331 |
| C | ARG448 |
| C | ASN449 |
| C | PRO451 |
| C | ARG482 |
| site_id | HC7 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS C 7002 |
| Chain | Residue |
| C | ARG557 |
| C | HIS622 |
| C | GLN623 |
| C | GLN628 |
| site_id | HC8 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS C 7003 |
| Chain | Residue |
| C | LYS380 |
| C | ASN383 |
| C | PHE626 |
| C | TYR642 |
| C | TRP708 |
| site_id | HC9 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS C 7004 |
| Chain | Residue |
| C | ALA34 |
| C | TRP36 |
| C | ASP45 |
| C | ALA327 |
| C | DMS7019 |
| site_id | IC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS C 7005 |
| Chain | Residue |
| C | GLY270 |
| C | THR271 |
| C | LEU291 |
| C | ARG292 |
| C | LEU293 |
| site_id | IC2 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS C 7006 |
| Chain | Residue |
| C | GLU314 |
| C | HIS316 |
| C | GLY320 |
| C | LEU322 |
| site_id | IC3 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS C 7007 |
| Chain | Residue |
| C | ARG505 |
| C | GLU508 |
| C | PRO1001 |
| C | VAL1003 |
| site_id | IC4 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS C 7008 |
| Chain | Residue |
| C | SER53 |
| C | LEU54 |
| C | ASN55 |
| C | LEU125 |
| site_id | IC5 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS C 7009 |
| Chain | Residue |
| C | VAL335 |
| C | PRO480 |
| site_id | IC6 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS C 7010 |
| Chain | Residue |
| C | PRO106 |
| C | ILE107 |
| C | HOH4251 |
| site_id | IC7 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS C 7011 |
| Chain | Residue |
| C | ILE576 |
| C | PRO584 |
| C | TRP585 |
| C | SER586 |
| C | ARG973 |
| site_id | IC8 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS C 7012 |
| Chain | Residue |
| C | GLY275 |
| C | GLY276 |
| C | VAL289 |
| C | THR290 |
| site_id | IC9 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS C 7013 |
| Chain | Residue |
| C | VAL84 |
| C | VAL85 |
| C | HIS93 |
| site_id | JC1 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS C 7014 |
| Chain | Residue |
| C | LYS621 |
| C | HOH4233 |
| site_id | JC2 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS C 7015 |
| Chain | Residue |
| B | VAL478 |
| C | ASP428 |
| C | PRO430 |
| site_id | JC3 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS C 7016 |
| Chain | Residue |
| C | HIS93 |
| C | GLY94 |
| C | TYR95 |
| site_id | JC4 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS C 7017 |
| Chain | Residue |
| C | VAL807 |
| C | GLU808 |
| C | LYS811 |
| site_id | JC5 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS C 7018 |
| Chain | Residue |
| C | ASN649 |
| C | GLU650 |
| C | ASN704 |
| C | NA3104 |
| site_id | JC6 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS C 7019 |
| Chain | Residue |
| C | ASP45 |
| C | ARG46 |
| C | DMS7004 |
| site_id | JC7 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS C 7020 |
| Chain | Residue |
| C | PHE629 |
| C | GLN718 |
| C | TRP720 |
| C | HOH4176 |
| site_id | JC8 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS C 1024 |
| Chain | Residue |
| C | ASN102 |
| C | ASP598 |
| C | PHE601 |
| site_id | JC9 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS C 7022 |
| Chain | Residue |
| C | LEU722 |
| D | ASP875 |
| site_id | KC1 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS C 7023 |
| Chain | Residue |
| C | SER132 |
| C | TRP133 |
| C | HIS216 |
| site_id | KC2 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS C 7024 |
| Chain | Residue |
| C | THR108 |
| C | PRO596 |
| site_id | KC3 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS C 7025 |
| Chain | Residue |
| C | GLN719 |
| C | ARG721 |
| C | MG3003 |
| site_id | KC4 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE DMS C 7026 |
| Chain | Residue |
| C | PRO306 |
| C | HOH4631 |
| site_id | KC5 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS C 7027 |
| Chain | Residue |
| C | TYR926 |
| C | TYR962 |
| C | ARG973 |
| C | LEU976 |
| C | HOH4526 |
| site_id | KC6 |
| Number of Residues | 15 |
| Details | BINDING SITE FOR RESIDUE BTB C 6001 |
| Chain | Residue |
| C | ASN102 |
| C | ASP201 |
| C | HIS391 |
| C | HIS418 |
| C | GLU461 |
| C | MET502 |
| C | TYR503 |
| C | GLU537 |
| C | HIS540 |
| C | TRP568 |
| C | TRP999 |
| C | NA3101 |
| C | HOH4118 |
| C | HOH4225 |
| C | HOH4469 |
| site_id | KC7 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE MG D 3001 |
| Chain | Residue |
| D | ASP15 |
| D | ASN18 |
| D | VAL21 |
| D | GLN163 |
| D | ASP193 |
| site_id | KC8 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE MG D 3002 |
| Chain | Residue |
| D | GLN718 |
| D | GLN719 |
| site_id | KC9 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE NA D 3101 |
| Chain | Residue |
| D | PHE556 |
| D | PRO560 |
| D | LEU562 |
| D | HOH4346 |
| site_id | LC1 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE NA D 3102 |
| Chain | Residue |
| D | PHE931 |
| D | PRO932 |
| D | LEU967 |
| D | THR970 |
| site_id | LC2 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE NA D 3103 |
| Chain | Residue |
| D | ASP201 |
| D | TRP568 |
| D | PHE601 |
| D | ASN604 |
| D | HOH4198 |
| D | HOH4296 |
| site_id | LC3 |
| Number of Residues | 9 |
| Details | BINDING SITE FOR RESIDUE DMS D 7001 |
| Chain | Residue |
| D | THR229 |
| D | VAL330 |
| D | GLY331 |
| D | ARG333 |
| D | ARG448 |
| D | ASN449 |
| D | HIS450 |
| D | PRO451 |
| D | ARG482 |
| site_id | LC4 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS D 7002 |
| Chain | Residue |
| D | ARG557 |
| D | HIS622 |
| D | GLN623 |
| D | GLN628 |
| D | HOH4266 |
| site_id | LC5 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE DMS D 7003 |
| Chain | Residue |
| D | LYS380 |
| D | ASN383 |
| D | PHE384 |
| D | PHE626 |
| D | TYR642 |
| D | HOH4021 |
| D | HOH4101 |
| D | HOH4594 |
| site_id | LC6 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS D 7005 |
| Chain | Residue |
| D | GLY270 |
| D | THR271 |
| D | LEU291 |
| D | ARG292 |
| site_id | LC7 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE DMS D 7006 |
| Chain | Residue |
| D | ARG505 |
| D | GLU508 |
| D | PRO1001 |
| D | SER1002 |
| D | VAL1003 |
| D | GLN1008 |
| D | HOH4187 |
| site_id | LC8 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS D 7007 |
| Chain | Residue |
| D | SER53 |
| D | LEU54 |
| D | ASN55 |
| D | LEU125 |
| site_id | LC9 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS D 7008 |
| Chain | Residue |
| D | GLU334 |
| D | VAL335 |
| D | PRO480 |
| site_id | MC1 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS D 7009 |
| Chain | Residue |
| D | PRO106 |
| D | ILE107 |
| D | PRO115 |
| site_id | MC2 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS D 7010 |
| Chain | Residue |
| D | ILE576 |
| D | PRO584 |
| D | TRP585 |
| D | SER586 |
| D | ARG973 |
| site_id | MC3 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS D 7011 |
| Chain | Residue |
| D | GLY275 |
| D | GLY276 |
| D | VAL289 |
| D | THR290 |
| D | HOH4412 |
| site_id | MC4 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS D 7012 |
| Chain | Residue |
| D | GLY593 |
| D | ASP594 |
| D | THR595 |
| D | HOH4620 |
| site_id | MC5 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS D 7013 |
| Chain | Residue |
| D | THR83 |
| D | VAL84 |
| D | VAL85 |
| D | HIS93 |
| site_id | MC6 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS D 7014 |
| Chain | Residue |
| D | ARG699 |
| D | ILE714 |
| D | TRP717 |
| site_id | MC7 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS D 7015 |
| Chain | Residue |
| D | ASN232 |
| D | GLU334 |
| D | ARG336 |
| site_id | MC8 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE DMS D 7016 |
| Chain | Residue |
| D | TRP36 |
| D | ASP45 |
| D | PRO47 |
| D | HOH4098 |
| site_id | MC9 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE DMS D 7018 |
| Chain | Residue |
| A | ARG37 |
| A | GLU136 |
| A | PRO218 |
| A | ILE323 |
| D | GLY320 |
| D | THR321 |
| D | LEU322 |
| D | HOH4151 |
| site_id | NC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE DMS D 7019 |
| Chain | Residue |
| A | GLU136 |
| D | GLU314 |
| D | HIS316 |
| D | THR317 |
| D | GLY320 |
| site_id | NC2 |
| Number of Residues | 1 |
| Details | BINDING SITE FOR RESIDUE DMS D 7020 |
| Chain | Residue |
| D | ALA68 |
| site_id | NC3 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE DMS D 7021 |
| Chain | Residue |
| D | SER923 |
| D | TYR926 |
| D | TYR962 |
| site_id | NC4 |
| Number of Residues | 13 |
| Details | BINDING SITE FOR RESIDUE BTB D 6001 |
| Chain | Residue |
| D | ASN102 |
| D | ASP201 |
| D | HIS391 |
| D | HIS418 |
| D | ASN460 |
| D | GLU461 |
| D | TYR503 |
| D | GLU537 |
| D | HIS540 |
| D | TRP568 |
| D | HOH4067 |
| D | HOH4090 |
| D | HOH4315 |
Functional Information from PROSITE/UniProt
| site_id | PS00608 |
| Number of Residues | 15 |
| Details | GLYCOSYL_HYDROL_F2_2 Glycosyl hydrolases family 2 acid/base catalyst. DRNHPSVIIWSlg.NE |
| Chain | Residue | Details |
| A | ASP447-GLU461 |
| site_id | PS00719 |
| Number of Residues | 26 |
| Details | GLYCOSYL_HYDROL_F2_1 Glycosyl hydrolases family 2 signature 1. NaVRCSHYPnhplWYtlcDryGLYVV |
| Chain | Residue | Details |
| A | ASN385-VAL410 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 4 |
| Details | ACT_SITE: Proton donor => ECO:0000269|PubMed:6420154 |
| Chain | Residue | Details |
| A | GLU461 | |
| B | GLU461 | |
| C | GLU461 | |
| D | GLU461 |
| site_id | SWS_FT_FI2 |
| Number of Residues | 4 |
| Details | ACT_SITE: Nucleophile => ECO:0000269|PubMed:1350782 |
| Chain | Residue | Details |
| A | GLU537 | |
| B | GLU537 | |
| C | GLU537 | |
| D | GLU537 |
| site_id | SWS_FT_FI3 |
| Number of Residues | 28 |
| Details | BINDING: |
| Chain | Residue | Details |
| B | ASP201 | |
| B | GLU461 | |
| B | GLU537 | |
| B | PHE601 | |
| B | ASN604 | |
| B | TRP999 | |
| C | ASN102 | |
| C | ASP201 | |
| C | GLU461 | |
| C | GLU537 | |
| C | PHE601 | |
| C | ASN604 | |
| C | TRP999 | |
| D | ASN102 | |
| D | ASP201 | |
| D | GLU461 | |
| D | GLU537 | |
| D | PHE601 | |
| D | ASN604 | |
| D | TRP999 | |
| A | ASN102 | |
| A | ASP201 | |
| A | GLU461 | |
| A | GLU537 | |
| A | PHE601 | |
| A | ASN604 | |
| A | TRP999 | |
| B | ASN102 |
| site_id | SWS_FT_FI4 |
| Number of Residues | 12 |
| Details | BINDING: BINDING => ECO:0000269|PubMed:11045615 |
| Chain | Residue | Details |
| A | VAL416 | |
| A | HIS418 | |
| A | ASN597 | |
| B | VAL416 | |
| B | HIS418 | |
| B | ASN597 | |
| C | VAL416 | |
| C | HIS418 | |
| C | ASN597 | |
| D | VAL416 | |
| D | HIS418 | |
| D | ASN597 |
| site_id | SWS_FT_FI5 |
| Number of Residues | 8 |
| Details | SITE: Transition state stabilizer |
| Chain | Residue | Details |
| C | HIS357 | |
| C | HIS391 | |
| D | HIS357 | |
| D | HIS391 | |
| A | HIS357 | |
| A | HIS391 | |
| B | HIS357 | |
| B | HIS391 |
| site_id | SWS_FT_FI6 |
| Number of Residues | 4 |
| Details | SITE: Important for ensuring that an appropriate proportion of lactose is converted to allolactose |
| Chain | Residue | Details |
| A | TRP999 | |
| B | TRP999 | |
| C | TRP999 | |
| D | TRP999 |
Catalytic Information from CSA
| site_id | MCSA1 |
| Number of Residues | 10 |
| Details | M-CSA 422 |
| Chain | Residue | Details |
| A | ASP201 | |
| A | HIS357 | |
| A | HIS391 | |
| A | VAL416 | |
| A | HIS418 | |
| A | GLU461 | |
| A | GLU537 | |
| A | ASN597 | |
| A | PHE601 | |
| A | ASN604 |
| site_id | MCSA2 |
| Number of Residues | 10 |
| Details | M-CSA 422 |
| Chain | Residue | Details |
| B | ASP201 | |
| B | HIS357 | |
| B | HIS391 | |
| B | VAL416 | |
| B | HIS418 | |
| B | GLU461 | |
| B | GLU537 | |
| B | ASN597 | |
| B | PHE601 | |
| B | ASN604 |
| site_id | MCSA3 |
| Number of Residues | 10 |
| Details | M-CSA 422 |
| Chain | Residue | Details |
| C | ASP201 | |
| C | HIS357 | |
| C | HIS391 | |
| C | VAL416 | |
| C | HIS418 | |
| C | GLU461 | |
| C | GLU537 | |
| C | ASN597 | |
| C | PHE601 | |
| C | ASN604 |
| site_id | MCSA4 |
| Number of Residues | 10 |
| Details | M-CSA 422 |
| Chain | Residue | Details |
| D | ASP201 | |
| D | HIS357 | |
| D | HIS391 | |
| D | VAL416 | |
| D | HIS418 | |
| D | GLU461 | |
| D | GLU537 | |
| D | ASN597 | |
| D | PHE601 | |
| D | ASN604 |
