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

APOSTREPTAVIDIN pH 3.0 I222 COMPLEX

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.60 Å

Oligo State

homo-octamer

Ligands

4 x SO4: SULFATE ION(Non-functional Binders)

SO4.1: 7 residues within 4Å: Chain A: Q.12, W.96, V.113, G.114, H.115 Chain H: A.107, W.108 7 PLIP interactions: 2 interactions with chain H, 5 interactions with chain A Hydrogen bonds: H:W.108, A:H.115 Water bridges: H:S.110, A:Q.12, A:W.96, A:W.96 Salt bridges: A:H.115 SO4.6: 7 residues within 4Å: Chain C: Q.12, W.96, V.113, G.114, H.115 Chain F: A.107, W.108 7 PLIP interactions: 2 interactions with chain F, 5 interactions with chain C Hydrogen bonds: F:W.108, C:H.115 Water bridges: F:S.110, C:Q.12, C:W.96, C:W.96 Salt bridges: C:H.115 SO4.11: 7 residues within 4Å: Chain D: A.107, W.108 Chain E: Q.12, W.96, V.113, G.114, H.115 7 PLIP interactions: 2 interactions with chain D, 5 interactions with chain E Hydrogen bonds: D:W.108, E:H.115 Water bridges: D:S.110, E:Q.12, E:W.96, E:W.96 Salt bridges: E:H.115 SO4.16: 7 residues within 4Å: Chain B: A.107, W.108 Chain G: Q.12, W.96, V.113, G.114, H.115 7 PLIP interactions: 2 interactions with chain B, 5 interactions with chain G Hydrogen bonds: B:W.108, G:H.115 Water bridges: B:S.110, G:Q.12, G:W.96, G:W.96 Salt bridges: G:H.115

8 x CL: CHLORIDE ION(Non-functional Binders)

CL.2: 8 residues within 4Å: Chain A: N.11, L.13, S.15, Y.31, S.33, A.34, V.35, W.80 Ligand excluded by PLIP CL.5: 8 residues within 4Å: Chain B: N.11, L.13, S.15, Y.31, S.33, V.35, W.80 Ligands: NH4.4 Ligand excluded by PLIP CL.7: 8 residues within 4Å: Chain C: N.11, L.13, S.15, Y.31, S.33, A.34, V.35, W.80 Ligand excluded by PLIP CL.10: 8 residues within 4Å: Chain D: N.11, L.13, S.15, Y.31, S.33, V.35, W.80 Ligands: NH4.9 Ligand excluded by PLIP CL.12: 8 residues within 4Å: Chain E: N.11, L.13, S.15, Y.31, S.33, A.34, V.35, W.80 Ligand excluded by PLIP CL.15: 8 residues within 4Å: Chain F: N.11, L.13, S.15, Y.31, S.33, V.35, W.80 Ligands: NH4.14 Ligand excluded by PLIP CL.17: 8 residues within 4Å: Chain G: N.11, L.13, S.15, Y.31, S.33, A.34, V.35, W.80 Ligand excluded by PLIP CL.20: 8 residues within 4Å: Chain H: N.11, L.13, S.15, Y.31, S.33, V.35, W.80 Ligands: NH4.19 Ligand excluded by PLIP

4 x IOD: IODIDE ION(Non-functional Binders)

IOD.3: 3 residues within 4Å: Chain B: T.102, T.103, N.106 Ligand excluded by PLIP IOD.8: 3 residues within 4Å: Chain D: T.102, T.103, N.106 Ligand excluded by PLIP IOD.13: 3 residues within 4Å: Chain F: T.102, T.103, N.106 Ligand excluded by PLIP IOD.18: 3 residues within 4Å: Chain H: T.102, T.103, N.106 Ligand excluded by PLIP

4 x NH4: AMMONIUM ION(Non-functional Binders)

NH4.4: 12 residues within 4Å: Chain B: N.11, L.13, S.15, Y.31, S.33, V.35, W.67, T.78, W.80, W.96, D.116 Ligands: CL.5 1 PLIP interactions: 1 interactions with chain B Hydrogen bonds: B:D.116 NH4.9: 12 residues within 4Å: Chain D: N.11, L.13, S.15, Y.31, S.33, V.35, W.67, T.78, W.80, W.96, D.116 Ligands: CL.10 1 PLIP interactions: 1 interactions with chain D Hydrogen bonds: D:D.116 NH4.14: 12 residues within 4Å: Chain F: N.11, L.13, S.15, Y.31, S.33, V.35, W.67, T.78, W.80, W.96, D.116 Ligands: CL.15 1 PLIP interactions: 1 interactions with chain F Hydrogen bonds: F:D.116 NH4.19: 12 residues within 4Å: Chain H: N.11, L.13, S.15, Y.31, S.33, V.35, W.67, T.78, W.80, W.96, D.116 Ligands: CL.20 1 PLIP interactions: 1 interactions with chain H Hydrogen bonds: H:D.116

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Katz, B.A., Binding of biotin to streptavidin stabilizes intersubunit salt bridges between Asp61 and His87 at low pH. J.Mol.Biol. (1997)

Release Date

1998-09-23

Peptides

STREPTAVIDIN: ABCDEFGH

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
D

C
B

D
D

E
B

F
D

G
B

H
D

STREPTAVIDIN

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