SMTL ID : 1kl5.1

an engineered streptavidin with improved affinity for the strep-tag II peptide : SAm2-StrepII

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.80 Å

Oligo State

homo-tetramer

Ligands

4 x SER- HIS- PRO- GLN- PHE: strep-tag II(Non-covalent)

SER-HIS-PRO-GLN-PHE.1: 10 residues within 4Å: Chain A: S.15, Y.42, W.67, S.76, T.78, W.80, W.96, L.98 Chain D: W.108, K.109 10 PLIP interactions: 8 interactions with chain A, 2 interactions with chain D Hydrophobic interactions: A:W.67, A:W.67, A:W.96, D:W.108 Hydrogen bonds: A:S.15, A:W.67, A:S.76, A:T.78, D:K.109 pi-Stacking: A:W.67 SER-HIS-PRO-GLN-PHE.2: 13 residues within 4Å: Chain B: S.15, A.34, S.40, Y.42, W.67, R.72, A.74, S.76, T.78, W.80, W.96, L.98 Chain C: W.108 19 PLIP interactions: 14 interactions with chain B, 5 interactions with chain C Hydrophobic interactions: B:W.67, B:W.67, B:A.74, B:W.96, B:W.96, B:L.98, C:W.108, C:W.108, C:W.108, C:W.108, C:W.108 Hydrogen bonds: B:S.15, B:S.40, B:W.67, B:S.76, B:T.78 Water bridges: B:Y.31 Salt bridges: B:R.72 pi-Stacking: B:W.67 SER-HIS-PRO-GLN-PHE.3: 14 residues within 4Å: Chain B: A.105, W.108 Chain C: S.15, A.34, S.40, Y.42, W.67, R.72, A.74, S.76, T.78, W.80, W.96, L.98 17 PLIP interactions: 12 interactions with chain C, 5 interactions with chain B Hydrophobic interactions: C:Y.42, C:W.67, C:W.67, C:W.96, B:W.108, B:W.108, B:W.108, B:W.108, B:W.108 Hydrogen bonds: C:S.15, C:A.34, C:S.40, C:W.67, C:S.76 Water bridges: C:Y.31 Salt bridges: C:R.72 pi-Stacking: C:W.67 SER-HIS-PRO-GLN-PHE.4: 15 residues within 4Å: Chain A: W.108 Chain D: L.13, S.15, G.33, A.34, S.40, Y.42, W.67, R.72, A.74, S.76, T.78, W.80, W.96, L.98 15 PLIP interactions: 12 interactions with chain D, 3 interactions with chain A Hydrophobic interactions: D:L.13, D:Y.42, D:W.67, D:W.67, D:W.96, A:W.108, A:W.108, A:W.108 Hydrogen bonds: D:S.15, D:A.34, D:W.67, D:S.76, D:T.78 Salt bridges: D:R.72 pi-Stacking: D:W.67

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Korndorfer, I.P. et al., Improved affinity of engineered streptavidin for the Strep-tag II peptide is due to a fixed open conformation of the lid-like loop at the binding site. Protein Sci. (2002)

Release Date

2002-04-03

Peptides

streptavidin: ABCD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

D
D

streptavidin

Related Entries With Identical Sequence