SMTL ID : 1d6n.2 (1 other biounit)

TERNARY COMPLEX STRUCTURE OF HUMAN HGPRTASE, PRPP, MG2+, AND THE INHIBITOR HPP REVEALS THE INVOLVEMENT OF THE FLEXIBLE LOOP IN SUBSTRATE BINDING

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.70 Å

Oligo State

homo-tetramer

Ligands

4 x MG: MAGNESIUM ION(Non-covalent)

MG.1: 4 residues within 4Å: Chain A: E.130, D.131, I.132 Ligands: PRP.3 4 PLIP interactions: 2 interactions with chain A, 2 Ligand-Water interactions Metal complexes: A:E.130, A:D.131, H2O.1, H2O.1 MG.4: 4 residues within 4Å: Chain B: V.63, E.130, D.131 Ligands: PRP.6 4 PLIP interactions: 2 interactions with chain B, 2 Ligand-Water interactions Metal complexes: B:E.130, B:D.131, H2O.2, H2O.2 MG.7: 4 residues within 4Å: Chain C: E.130, D.131, I.132 Ligands: PRP.9 4 PLIP interactions: 2 interactions with chain C, 2 Ligand-Water interactions Metal complexes: C:E.130, C:D.131, H2O.3, H2O.3 MG.10: 4 residues within 4Å: Chain D: V.63, E.130, D.131 Ligands: PRP.12 4 PLIP interactions: 2 interactions with chain D, 2 Ligand-Water interactions Metal complexes: D:E.130, D:D.131, H2O.4, H2O.4

4 x PPO: 3H-PYRAZOLO[4,3-D]PYRIMIDIN-7-OL(Non-covalent)

PPO.2: 8 residues within 4Å: Chain A: I.132, D.134, K.162, K.182, F.183, V.184, D.190 Ligands: PRP.3 4 PLIP interactions: 4 interactions with chain A Hydrogen bonds: A:K.162, A:K.162, A:V.184 pi-Stacking: A:F.183 PPO.5: 8 residues within 4Å: Chain B: Y.101, N.103, I.132, K.162, F.183, V.184, D.190 Ligands: PRP.6 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:K.162, B:V.184, B:V.184 pi-Stacking: B:F.183 PPO.8: 8 residues within 4Å: Chain C: I.132, D.134, K.162, K.182, F.183, V.184, D.190 Ligands: PRP.9 4 PLIP interactions: 4 interactions with chain C Hydrogen bonds: C:K.162, C:K.162, C:V.184 pi-Stacking: C:F.183 PPO.11: 8 residues within 4Å: Chain D: Y.101, N.103, I.132, K.162, F.183, V.184, D.190 Ligands: PRP.12 4 PLIP interactions: 4 interactions with chain D Hydrogen bonds: D:K.162, D:V.184, D:V.184 pi-Stacking: D:F.183

4 x PRP: 1-O-pyrophosphono-5-O-phosphono-alpha-D-ribofuranose(Non-covalent)

PRP.3: 17 residues within 4Å: Chain A: V.63, L.64, A.65, G.66, G.67, S.100, Y.101, E.130, D.131, I.132, D.134, T.135, G.136, K.137, T.138 Ligands: MG.1, PPO.2 11 PLIP interactions: 11 interactions with chain A Hydrogen bonds: A:L.64, A:G.67, A:S.100, A:D.131, A:D.134, A:T.135, A:G.136, A:T.138 Water bridges: A:D.131, A:D.131, A:D.131 PRP.6: 17 residues within 4Å: Chain B: G.66, S.100, Y.101, C.102, E.130, D.131, I.132, D.134, T.135, G.136, K.137, T.138, M.139, L.189, D.190 Ligands: MG.4, PPO.5 10 PLIP interactions: 10 interactions with chain B Hydrogen bonds: B:G.66, B:S.100, B:Y.101, B:E.130, B:E.130, B:K.137, B:T.138, B:M.139, B:D.190, B:D.190 PRP.9: 17 residues within 4Å: Chain C: V.63, L.64, A.65, G.66, G.67, S.100, Y.101, E.130, D.131, I.132, D.134, T.135, G.136, K.137, T.138 Ligands: MG.7, PPO.8 11 PLIP interactions: 11 interactions with chain C Hydrogen bonds: C:L.64, C:G.67, C:S.100, C:D.131, C:D.134, C:T.135, C:G.136, C:T.138 Water bridges: C:D.131, C:D.131, C:D.131 PRP.12: 17 residues within 4Å: Chain D: G.66, S.100, Y.101, C.102, E.130, D.131, I.132, D.134, T.135, G.136, K.137, T.138, M.139, L.189, D.190 Ligands: MG.10, PPO.11 10 PLIP interactions: 10 interactions with chain D Hydrogen bonds: D:G.66, D:S.100, D:Y.101, D:E.130, D:E.130, D:K.137, D:T.138, D:M.139, D:D.190, D:D.190

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Balendiran, G.K. et al., Ternary complex structure of human HGPRTase, PRPP, Mg2+, and the inhibitor HPP reveals the involvement of the flexible loop in substrate binding. Protein Sci. (1999)

Release Date

1999-12-30

Peptides

PROTEIN (HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE): ABCD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
A

D
B

PROTEIN (HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE)

Related Entries With Identical Sequence