SMTL ID : 2rtg.1

STREPTAVIDIN-BIOTIN COMPLEX, PH 2.40, SPACE GROUP I222

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.39 Å

Oligo State

homo-tetramer

Ligands

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

CL.1: 3 residues within 4Å: Chain A: G.34, A.38, T.40 Ligand excluded by PLIP CL.5: 3 residues within 4Å: Chain C: G.34, A.38, T.40 Ligand excluded by PLIP

4 x BTN: BIOTIN(Non-covalent)

BTN.2: 19 residues within 4Å: Chain A: N.23, L.25, S.27, Y.43, S.45, A.46, V.47, G.48, N.49, A.50, W.79, A.86, S.88, T.90, W.92, W.108, L.110, D.128 Chain D: W.120 12 PLIP interactions: 12 interactions with chain A Hydrophobic interactions: A:A.50, A:W.79, A:W.79, A:W.79 Hydrogen bonds: A:N.23, A:S.27, A:Y.43, A:S.45, A:N.49, A:S.88, A:S.88, A:D.128 BTN.4: 19 residues within 4Å: Chain B: N.23, L.25, S.27, Y.43, S.45, A.46, V.47, G.48, N.49, A.50, W.79, A.86, S.88, T.90, W.92, W.108, L.110, D.128 Chain C: W.120 11 PLIP interactions: 11 interactions with chain B Hydrophobic interactions: B:A.50, B:W.79, B:W.79, B:W.79, B:L.110 Hydrogen bonds: B:N.23, B:Y.43, B:S.45, B:N.49, B:S.88, B:D.128 BTN.6: 19 residues within 4Å: Chain B: W.120 Chain C: N.23, L.25, S.27, Y.43, S.45, A.46, V.47, G.48, N.49, A.50, W.79, A.86, S.88, T.90, W.92, W.108, L.110, D.128 12 PLIP interactions: 12 interactions with chain C Hydrophobic interactions: C:A.50, C:W.79, C:W.79, C:W.79 Hydrogen bonds: C:N.23, C:S.27, C:Y.43, C:S.45, C:N.49, C:S.88, C:S.88, C:D.128 BTN.8: 19 residues within 4Å: Chain A: W.120 Chain D: N.23, L.25, S.27, Y.43, S.45, A.46, V.47, G.48, N.49, A.50, W.79, A.86, S.88, T.90, W.92, W.108, L.110, D.128 11 PLIP interactions: 11 interactions with chain D Hydrophobic interactions: D:A.50, D:W.79, D:W.79, D:W.79, D:L.110 Hydrogen bonds: D:N.23, D:Y.43, D:S.45, D:N.49, D:S.88, D:D.128

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

SO4.3: 5 residues within 4Å: Chain B: V.47, G.48, N.49 Chain C: W.120, K.121 2 PLIP interactions: 1 interactions with chain C, 1 interactions with chain B Salt bridges: C:K.121 Hydrogen bonds: B:G.48 SO4.7: 5 residues within 4Å: Chain A: W.120, K.121 Chain D: V.47, G.48, N.49 2 PLIP interactions: 1 interactions with chain A, 1 interactions with chain D Salt bridges: A:K.121 Hydrogen bonds: D:G.48

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

1998-10-14

Peptides

STREPTAVIDIN: ABCD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
D

C
B

D
D

STREPTAVIDIN

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