Difference between revisions of "Part:BBa K3140000"

Revision as of 00:37, 15 October 2019

PsiD - Tryptophan decarboxylase from Psilocybe cubensis

PsiD is a tryptophan decarboxylase, which catalyses the conversion of L-tryptophan to tryptamine.

NCBI: ASU62239.1
UniProt: P0DPA6
EC number: 4.1.1.105

Usage and Biology

PsiD is a native enzyme obtained from the Psilocybe cubensis, which is involved in the metabolic biosynthesis of psilocybin from tryptophan. It accepts both L-tryptophan and 4-hydroxy-L-tryptophan as substrates, producing tryptamine and 4-hydroxytryptamine, respectively. Heterologous expression of PsiD has been achieved in a T7 induction system using pET-28c(+) transformed into Escherichia coli BL21(DE3), co-transformed with chaperone plasmid pGro7.

Fig. 1: Decarboxylation of L-tryptophan to tryptamine, mediated by PsiD. CO₂ is released as a byproduct. Source: KEGG

Fig. 2: Decarboxylation of 4-hydroxy-L-tryptophan to 4-hydroxytryptamine, mediated by PsiD. CO₂ is released as a byproduct. Source: KEGG

Fig. 3: Polyacrylamide gel electrophoresis image of soluble and insoluble protein extract from unindexed and IPTG induced E. coli BL21(DE3)::pGro7 cells containing pET-28c(+):PsiD, run on an Mini-PROTEAN® TGX Stain-Free™ precast gel (Bio-Rad) at 200V for 40 minutes.

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- SDS-PAGE IMAGE - LC/MS - pUS250 and pET-28c(+)

Sequence and Features

Assembly Compatibility:

10
COMPATIBLE WITH RFC[10]
12
COMPATIBLE WITH RFC[12]
21
COMPATIBLE WITH RFC[21]
23
COMPATIBLE WITH RFC[23]
25
COMPATIBLE WITH RFC[25]
1000
COMPATIBLE WITH RFC[1000]

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 ===Usage and Biology===
-PsiD is a native enzyme obtained from the ''Psilocybe cubensis'', which is involved in the metabolic biosynthesis of psilocybin from tryptophan. It accepts both L-tryptophan and 4-hydroxy-L-tryptophan as substrates, producing tryptamine and 4-hydroxytryptamine, respectively. Heterologous expression of PsiD has been achieved in ''Escherichia coli'' <add strain> in a <expression system>.
+PsiD is a native enzyme obtained from the ''Psilocybe cubensis'', which is involved in the metabolic biosynthesis of psilocybin from tryptophan. It accepts both L-tryptophan and 4-hydroxy-L-tryptophan as substrates, producing tryptamine and 4-hydroxytryptamine, respectively. Heterologous expression of PsiD has been achieved in a T7 induction system using  pET-28c(+) transformed into ''Escherichia coli'' BL21(DE3), co-transformed with chaperone plasmid pGro7.
 [[Image:T--Sydney_Australia--PsiD_KEGG_rxn1.gif|thumb|900px|Fig. 1: Decarboxylation of L-tryptophan to tryptamine, mediated by PsiD. CO<sub>2</sub> is released as a byproduct. Source: [https://www.genome.jp/dbget-bin/www_bget?reaction+R00685 KEGG]  ]]
 [[Image:T--Sydney_Australia--PsiD_KEGG_rxn2.gif|thumb|900px|Fig. 2: Decarboxylation of 4-hydroxy-L-tryptophan to 4-hydroxytryptamine, mediated by PsiD. CO<sub>2</sub> is released as a byproduct. Source: [https://www.genome.jp/dbget-bin/www_bget?reaction+R11932 KEGG]  ]]
+[[Image:T--Sydney_Australia--PsiD_pET28c_SDS.png|thumb|900px|Fig. 3: Polyacrylamide gel electrophoresis image of soluble and insoluble protein extract from unindexed and IPTG induced ''E. coli'' BL21(DE3)::pGro7 cells containing pET-28c(+):PsiD, run on an Mini-PROTEAN® TGX Stain-Free™ precast gel (Bio-Rad) at 200V for 40 minutes.]]
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