Spermidine/putrescine
import
ATP-binding
protein PotA
Spermidine/putrescine
transport
system permease
protein potB
Spermidine/putrescine
transport
system permease
protein potC
Spermidine/putrescine-
binding
periplasmic
protein
Spermidine/putrescine
import
ATP-binding
protein PotA
Spermidine/putrescine
transport
system permease
protein potB
Spermidine/putrescine
transport
system permease
protein potC
Spermidine/putrescine-
binding
periplasmic
protein
S-
adenosylmethionine
decarboxylase
proenzyme
Spermidine
synthase
S-
Adenosylmethionine
Spermidine
Spermidine
Putrescine
Putrescine
H+
Decarboxy-SAM
CO2
5'-
Methylthioadenosine
H+
ATP
H2O
ADP
Pi
H+
ATP
H2O
ADP
Pi
H+
Pyruvic acid
Magnesium
Biotin
Metabolism