Team:Aix-Marseille/Parts
From 2014.igem.org
Our parts
The list will be updated each time we'll create or modify a part
Part BBa_K1349000
Short description
SerA_mut
DNA Sequence
ATGGCAAAGGTATCGCTGGAGAAAGACAAGATTAAGTTTCTGCTGGTAGAAGGCGTGCACCAAAAGGCGC
TGGAAAGCCTTCGTGCAGCTGGTTACACCAACATCGAATTTCACAAAGGCGCGCTGGATGATGAACAATT
AAAAGAATCCATCCGCGATGCCCACTTCATCGGCCTGCGATCCCGTACCCATCTGACTGAAGACGTGATC
AACGCCGCAGAAAAACTGGTCGCTATTGGCTGTTTCTGTATCGGAACAAACCAGGTTGATCTGGATGCGG
CGGCAAAGCGCGGGATCCCGGTATTTAACGCACCGTTCTCAAATACGCGCTCTGTTGCGGAGCTGGTGAT
TGGCGAACTGCTGCTGCTATTGCGCGGCGTGCCGGAAGCCAATGCTAAAGCGCACCGTGGCGTGTGGAAC
AAACTGGCGGCGGGTTCTTTTGAAGCGCGCGGCAAAAAGCTGGGTATCATCGGCTACGGTCATATTGGTA
CGCAATTGGGCATTCTGGCTGAATCGCTGGGAATGTATGTTTACTTTTATGATATTGAAAATAAACTGCC
GCTGGGCAACGCCACTCAGGTACAGCATCTTTCTGACCTGCTGAATATGAGCGATGTGGTGAcgctGCAT
GTACCAGAGAATCCGTCCACCAAAAATATGATGGGCGCGAAAGAAATTTCACTAATGAAGCCCGGCTCGC
TGCTGATTAATGCTTCGCGCGGTACTGTGGTGGATATTCCGGCGCTGTGTGATGCGCTGGCGAGCAAACA
TCTGGCGGGGGCGGCAATCGACGTATTCCCGACGGAACCGGCGACCAATAGCGATCCATTTACCTCTCCG
CTGTGTGAATTCGACAACGTCCTTCTGACGCCACACATTGGCGGTTCGACTCAGGAAGCGCAGGAGAATA
TCGGCCTGGAAGTTGCGGGTAAATTGATCAAGTATTCTGACAATGGCTCAACGCTCTCTGCGGTGAACTT
CCCGGAAGTCTCGCTGCCACTGCACGGT
Logic and explanation for part and construction
This construct encodes a truncated version of E. coli W3110 SerA ( D-3-phosphoglycerate dehydrogenase), missing the last 75 aa of the full sequence, and without stop codon. SerA is requiered for serine biosynthesis. Following the work of Peters-Wendisch et al. 2005, this mutated version of the enzyme is expected to be no-longer inhibited by Serine, and to allow the production of a high serine concentration.
Purpose
This part is designed to allow the synthesis of serine in E. coli without the normal feedback inhibition, thus permitting the accumulation of high concentrations.
Origin and method of construction
The part was obtained by PCR from E.coli strain W3110 and SLIC assembly. The construction removed the EcoR1 restriction site in the gene by the silent mutations of a GAA codon to a GAG codon.
Propreties expected and validation
We designed this sequence that in an E.coli mutant strain unable to catabolise serine correctly and without a serine import system, production of this coding sequence will lead to serine secretion into the growth media. The sequence does not contain a stop codon so it should be incorporated into composite bricks for testing synthesis and activity.
Current backbone
pSB1C3
Sequenced clone
ok SerA Cm1