Putrescine-binding periplasmic protein SpuD
UniProtKB accession: Q9I6J1
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Go to UniProtKB: Q9I6J1
UniProtKB description: Putrescine-binding protein probably required for putrescine uptake into cells. Binds putrescine with high affinity (KD=3 nM), spermidine with relatively low affinity (KD=6.8 uM). Does not bind cadaverine or spermine. Putrescine binding induces large inter-domain conformational changes.
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