ISDA

Entry Detail

PDB ID:

7PCW

Keywords:

Title:

X-RAY STRUCTURE OF THE HALOALKANE DEHALOGENASE HALOTAG7-M175W LABELED WITH A CHLOROALKANE-TETRAMETHYLRHODAMINE FLUOROPHORE SUBSTRATE

Biological Source:

Source Organism:

Rhodococcus sp.

Host Organism:

Escherichia coli BL21(DE3)

PDB Version:

Deposition Date:

2021-08-04

Release Date:

2021-12-15

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.30 Å

R-Value Free:

0.24

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

P 1

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Haloalkane dehalogenase
Chain IDs:A, B, C, D
Chain Length:293
Number of Molecules:4
Biological Source:Rhodococcus sp.

UniProt ID:P0A3G3 Pfam ID:PF00561 EC:3.8.1.5

Ligand Molecules

OEH

Primary Citation

Engineered HaloTag variants for fluorescence lifetime multiplexing.

Frei, M.S, Tarnawski, M, Roberti, M.J, Koch, B, Hiblot, J, Johnsson, K.Show

Nat.Methods 19 65 70 (2022)

PMID: 34916672 DOI: 10.1038/s41592-021-01341-x

Abstact

Self-labeling protein tags such as HaloTag are powerful tools that can label fusion proteins with synthetic fluorophores for use in fluorescence microscopy. Here we introduce HaloTag variants with either increased or decreased brightness and fluorescence lifetime compared with HaloTag7 when labeled with rhodamines. Combining these HaloTag variants enabled live-cell fluorescence lifetime multiplexing of three cellular targets in one spectral channel using a single fluorophore and the generation of a fluorescence lifetime-based biosensor. Additionally, the brightest HaloTag variant showed up to 40% higher brightness in live-cell imaging applications.

Legend

Protein

Chemical

Disease

Primary Citation of related structures