Crystal Structure of the CTP1L Endolysin Reveals How Its Activity Is Regulated by a Secondary Translation Product.

Dunne M, Leicht S, Krichel B, Mertens HD, Thompson A, Krijgsveld J, Svergun DI, Gómez-Torres N, Garde S, Uetrecht C, Narbad A, Mayer MJ, Meijers R, J Biol Chem 291(10):4882-93 (2016) Europe PMC

SASDAD7 – Structure of a complex between full length and truncated CTP1L endolysin

Endolysin
MWI(0) 65 kDa
MWexpected 33 kDa
VPorod 95 nm3
log I(s) 8.53×101 8.53×100 8.53×10-1 8.53×10-2
Endolysin  small angle scattering data  s, nm-1
ln I(s)
Endolysin  Guinier plot ln 8.53×101 Rg: 3.7 nm 0 (3.7 nm)-2 s2
(sRg)2I(s)/I(0)
Endolysin  Kratky plot 1.104 0 3 sRg
p(r)
Endolysin  pair distance distribution function Rg: 4 nm 0 Dmax: 13.8 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Endolysin  CRYSOL model

log I(s)
 s, nm-1
Endolysin  DAMMIF model

Synchrotron SAXS data from solutions of Structure of a complex between full length and truncated CTP1L endolysin in 20 mM HEPES, pH 7.4 were collected on the EMBL X33 beam line at the DORIS III, DESY storage ring (Hamburg, Germany) using a Pilatus 1M-W detector at a sample-detector distance of 2.7 m and at a wavelength of λ = 0.15 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). Solute concentrations ranging between 1 and 4 mg/ml were measured at 20°C. Eight successive 15 second frames were collected. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted. The low angle data collected at lower concentration were merged with the highest concentration high angle data to yield the final composite scattering curve.

Storage temperature = UNKNOWN

Tags: X33
Endolysin (CTP1L)
Mol. type   Protein
Organism   Clostridium phage phiCTP1
Olig. state   Other
Mon. MW   32.8 kDa
 
UniProt   D9ZNF3
Sequence   FASTA