5GY7
X-Ray structure of H243I mutant of UDP-Galactose 4-epimerase from E.coli:evidence for existence of open and closed active site during catalysis.
Functional Information from GO Data
Chain | GOid | namespace | contents |
A | 0003978 | molecular_function | UDP-glucose 4-epimerase activity |
A | 0005515 | molecular_function | protein binding |
A | 0005737 | cellular_component | cytoplasm |
A | 0005829 | cellular_component | cytosol |
A | 0005975 | biological_process | carbohydrate metabolic process |
A | 0006012 | biological_process | galactose metabolic process |
A | 0009242 | biological_process | colanic acid biosynthetic process |
A | 0016853 | molecular_function | isomerase activity |
A | 0016857 | molecular_function | racemase and epimerase activity, acting on carbohydrates and derivatives |
A | 0033499 | biological_process | galactose catabolic process via UDP-galactose |
A | 0042802 | molecular_function | identical protein binding |
A | 0070403 | molecular_function | NAD+ binding |
B | 0003978 | molecular_function | UDP-glucose 4-epimerase activity |
B | 0005515 | molecular_function | protein binding |
B | 0005737 | cellular_component | cytoplasm |
B | 0005829 | cellular_component | cytosol |
B | 0005975 | biological_process | carbohydrate metabolic process |
B | 0006012 | biological_process | galactose metabolic process |
B | 0009242 | biological_process | colanic acid biosynthetic process |
B | 0016853 | molecular_function | isomerase activity |
B | 0016857 | molecular_function | racemase and epimerase activity, acting on carbohydrates and derivatives |
B | 0033499 | biological_process | galactose catabolic process via UDP-galactose |
B | 0042802 | molecular_function | identical protein binding |
B | 0070403 | molecular_function | NAD+ binding |
Functional Information from PDB Data
site_id | AC1 |
Number of Residues | 19 |
Details | binding site for residue UDP A 401 |
Chain | Residue |
A | ASN179 |
A | VAL269 |
A | ARG292 |
A | ASP295 |
A | HOH554 |
A | HOH577 |
A | HOH598 |
A | HOH658 |
A | HOH674 |
A | HOH682 |
A | HOH757 |
A | ASN198 |
A | ASN199 |
A | LEU200 |
A | ALA216 |
A | ILE217 |
A | PHE218 |
A | ARG231 |
A | TYR233 |
site_id | AC2 |
Number of Residues | 32 |
Details | binding site for residue NAD A 402 |
Chain | Residue |
A | GLY7 |
A | GLY10 |
A | TYR11 |
A | ILE12 |
A | ASP31 |
A | ASN32 |
A | LEU33 |
A | CYS34 |
A | ASN35 |
A | SER36 |
A | GLY57 |
A | ASP58 |
A | ILE59 |
A | PHE80 |
A | ALA81 |
A | GLY82 |
A | LYS84 |
A | ASN99 |
A | SER122 |
A | SER123 |
A | TYR149 |
A | LYS153 |
A | TYR177 |
A | PHE178 |
A | PRO180 |
A | HOH523 |
A | HOH547 |
A | HOH559 |
A | HOH592 |
A | HOH595 |
A | HOH638 |
A | HOH650 |
site_id | AC3 |
Number of Residues | 9 |
Details | binding site for residue GOL A 403 |
Chain | Residue |
A | ARG331 |
A | HIS332 |
A | HOH513 |
A | HOH542 |
A | HOH720 |
B | ASN267 |
B | THR317 |
B | LEU318 |
B | ASP319 |
site_id | AC4 |
Number of Residues | 20 |
Details | binding site for residue UDP B 401 |
Chain | Residue |
B | ASN179 |
B | ASN198 |
B | ASN199 |
B | LEU200 |
B | ALA216 |
B | ILE217 |
B | PHE218 |
B | ARG231 |
B | TYR233 |
B | VAL269 |
B | ARG292 |
B | ASP295 |
B | HOH548 |
B | HOH551 |
B | HOH599 |
B | HOH640 |
B | HOH656 |
B | HOH665 |
B | HOH702 |
B | HOH713 |
site_id | AC5 |
Number of Residues | 33 |
Details | binding site for residue NAD B 402 |
Chain | Residue |
B | SER123 |
B | TYR149 |
B | LYS153 |
B | TYR177 |
B | PHE178 |
B | PRO180 |
B | HOH519 |
B | HOH555 |
B | HOH579 |
B | HOH582 |
B | HOH593 |
B | HOH615 |
B | HOH626 |
B | HOH632 |
B | GLY7 |
B | GLY10 |
B | TYR11 |
B | ILE12 |
B | ASP31 |
B | ASN32 |
B | LEU33 |
B | CYS34 |
B | ASN35 |
B | SER36 |
B | GLY57 |
B | ASP58 |
B | ILE59 |
B | PHE80 |
B | ALA81 |
B | GLY82 |
B | LYS84 |
B | ASN99 |
B | SER122 |
site_id | AC6 |
Number of Residues | 5 |
Details | binding site for residue NO3 B 403 |
Chain | Residue |
B | ARG38 |
B | PRO223 |
B | ARG291 |
B | PRO297 |
B | HOH561 |
Functional Information from SwissProt/UniProt
site_id | SWS_FT_FI1 |
Number of Residues | 2 |
Details | ACT_SITE: Proton acceptor => ECO:0000269|PubMed:8611497 |
Chain | Residue | Details |
A | TYR149 | |
B | TYR149 |
site_id | SWS_FT_FI2 |
Number of Residues | 14 |
Details | BINDING: BINDING => ECO:0000269|PubMed:12019271, ECO:0000269|PubMed:1579570, ECO:0000269|PubMed:8611497, ECO:0000269|PubMed:8611559, ECO:0000269|PubMed:8931134, ECO:0000269|PubMed:9174344, ECO:0000269|PubMed:9271498, ECO:0000269|PubMed:9271499, ECO:0000269|PubMed:9708982 |
Chain | Residue | Details |
A | TYR11 | |
B | ASP58 | |
B | PHE80 | |
B | ASN99 | |
B | LYS153 | |
B | PHE178 | |
A | ASP31 | |
A | ASP58 | |
A | PHE80 | |
A | ASN99 | |
A | LYS153 | |
A | PHE178 | |
B | TYR11 | |
B | ASP31 |
site_id | SWS_FT_FI3 |
Number of Residues | 16 |
Details | BINDING: |
Chain | Residue | Details |
A | SER124 | |
B | TYR149 | |
B | ASN179 | |
B | ASN199 | |
B | ALA216 | |
B | ARG231 | |
B | ARG292 | |
B | TYR299 | |
A | TYR149 | |
A | ASN179 | |
A | ASN199 | |
A | ALA216 | |
A | ARG231 | |
A | ARG292 | |
A | TYR299 | |
B | SER124 |
Catalytic Information from CSA
site_id | MCSA1 |
Number of Residues | 3 |
Details | M-CSA 188 |
Chain | Residue | Details |
A | SER124 | activator, electrostatic stabiliser, hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor, proton relay |
A | TYR149 | hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor |
A | LYS153 | activator, hydrogen bond donor |
site_id | MCSA2 |
Number of Residues | 3 |
Details | M-CSA 188 |
Chain | Residue | Details |
B | SER124 | activator, electrostatic stabiliser, hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor, proton relay |
B | TYR149 | hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor |
B | LYS153 | activator, hydrogen bond donor |