Difference between revisions of "Part:BBa E1010"

Revision as of 00:34, 2 November 2017

**highly** engineered mutant of red fluorescent protein from Discosoma striata (coral)

monomeric RFP: Red Fluorescent Protein. Excitation peak: 584 nm Emission peak: 607 nm

Usage and Biology

Robert E. Campbell started with Discosoma RFP (DsRed) and evolved a faster folding, monomeric variant. See paper listed in source. Codon optimized for expression in bacteria (?? DE)

iGEM11_Uppsala-Sweden: Expression of chromoproteins. The images above show E coli No part name specified with partinfo tag. expressing amilCP BBa_K592009 (blue), amilGFP BBa_K592010 (yellow) and RFP BBa_E1010 (red).

Peking iGEM 2016 has fused this part with triple spytag. The fused protein is participate in Peking’s polymer network. By adding this protein, the whole polymer network become visible in most conditions. If you want to learn more about Peking’s polymer network and the role of mRFP in this network, please click here https://parts.igem.org/Part:BBa_K1989004".

Allergen characterization of BBa_E1010: NOT a potential allergen

The Baltimore Biocrew 2017 team discovered that proteins generated through biobrick parts can be evaluated for allergenicity. This information is important to the people using these parts in the lab, as well as when considering using the protein for mass production, or using in the environment. The allergenicity test permits a comparison between the sequences of the biobrick parts and the identified allergen proteins enlisted in a data base.The higher the similarity between the biobricks and the proteins, the more likely the biobrick is allergenic cross-reactive. In the full-length alignments by FASTA, 30% or more amount of similarity signifies that the biobrick has a Precaution Status meaning there is a potential risk with using the part. A 50% or more amount of identity signifies that the biobrick has a Possible Allergen Status. In the sliding window of 80 amino acid segments, greater than 35% signifies similarity to allergens. The percentage of similarity implies the potential of harm biobricks’ potential negative impact to exposed populations. For more information on how to assess your own biobrick part please see the “Allergenicity Testing Protocol” in the following page http://2017.igem.org/Team:Baltimore_Bio-Crew/Experiments

For the biobrick part, BBa_E1010, there was a 27.6% of identity match and 56.9% of similarity match compared to the allergen database. This means that the biobrick part is not of potential allergen status. In the 80 amino acid alignments by FASTA, no matches found that are greater than 35% for this biobrick.

Contribution

Group: Hong Kong-CUHK iGEM 2017
Author: Yuet Ching Lin
Summary: We measured the fluorescent signal of mRFP in buffers with different pH.
Documentation:
Charaterization of mRFP pH stabillity:

We grew C41 bacteria with parts BBa_J61002 in 2XYT for 24 hours. After purifying the mRFP by Ion Exchange Chromatography and Hydrophobic Interaction Chromatography, we measured the fluoresece (ex ,em ) of purified mRFP, which is diluted to 10µg/100µl (total 200µl) in triplicates, into different buffers (ranges from pH2 to pH12; Volume of mRFP:buffer = 1:1.8). To facilitate reproducibility of the experiment, we correlated the relative fluorescent intensity to an absolute fluorophore concentration by referring it to a standard curve of the fluorophores(Rhodamine) using the interlab study protocol. The result shows that the stability drops dramatically in pH condition below 6 and relatively stable in pH 6-10.

Fig.1 Vary pH attributed to different fluorescent intensity of RFP.

Contribution2

Part name:BBa_K2382013
Group: iGEM17_CSMU_NCHU_Taiwan 2017
Author: SHAO-CHI LO
Summary: We add a His Tag at the end. Therefore, a fusion protein with this part may have red color and the ability to be purified easily.
Documentation:

Sequence and Features

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