2-amino-4-phosphonobutanoic acid (nhpSer)

ncAA Structure (png, jpg, jpeg)
nhpSer

ncAA Protocols

Zhu, Phillip, Ryan A Mehl, and Richard B Cooley. (2023) 2023. “Biosynthesis And Genetic Encoding Of Non-Hydrolyzable Phosphoserine Into Recombinant Proteins In Escherichia Coli.”. Bio-Protocol 13 (21): e4861. doi:10.21769/BioProtoc.4861.

ncAA Usage Publications

Stuber, Katrin, Tobias Schneider, Jill Werner, Michael Kovermann, Andreas Marx, and Martin Scheffner. (2021) 2021. “Structural And Functional Consequences Of Nedd8 Phosphorylation.”. Nature Communications 12 (1): 5939. doi:10.1038/s41467-021-26189-9.

ncAA Utility
Used to produce proteins that mimic site-specific phosphorylation at a serine residue - where the phosphate group cannot by hydrolyzed - via genetic code expansion versus other protein phosphorylation strategies.
ncAA Source
Endogenous - Biosynthesized
ncAA Availability
In the most recent paper (Zhu et al. 2023) - nhpSer is biosynthesized via the Frb protein pathway. The "PermaPhos" kit is available on Addgene kit #1000000226.

In Rogerson et al. and Stuber et al., nhpSer was added to the media after being purchased.

RS/tRNA Pair Usage Information
The most recently vetted RS/tRNA pair that incorporates nhpSer, and the one that is recommended to use, is the SepRS2/Sep-tRNA-v2 pair.

RS/tRNA Pair(s)


ncAA Synonyms
nhpSer
nonhydrolyzable phosphoserine
non-hydrolyzable phosphoserine
phosphono-methyl-alanine
2-amino-4-phosphonobutyric acid
2-amino-4-phosphonobutyrate
L-2-amino-4-phosphonobutyric acid
(2S)-2-amino-4-phosphonobutanoic acid
(2S)-2-amino-4-phosphonobutyric acid
DL-AP4
ChEBI ID
143992
PDB Code
E7P