E.coli's Putrescine receptor PotF complexed with Spermine

2-Gaussian fit: Grosse-Kunstleve RW, Sauter NK, Adams PD: Newsletter of the IUCr Commission on Crystallographic Computing 2004, 3, 22-31.

A comprehensive binding study illustrates ligand recognition in the periplasmic binding protein PotF.

2.4 M Ammoniumsulfate, 0.1 M Bicine pH 8.8, 5% PEG 3550

6YE0 contains the same protein complexed with putrescine

6YE6 contains the same protein complexed with agmatine

6YE7 contains the same protein complexed with cadaverine

6YE8 contains the same protein complexed with spermidine

6YEB contains the same protein in its closed apo state

Periplasmic binding protein, E.coli, Spermine, TRANSPORT PROTEIN

(chain 'A' and (resid 30 through 369 or resid 401 or resid 701 through 801 or resid 1301))

(chain 'B' and (resid 30 through 369 or resid 501 or resid 801 through 901 or resid 1301))

binding site for Di-peptide SPM A 401 and ASP A 39