S. aureus Eap is a polyvalent inhibitor of neutrophil serine proteases.

Mishra N, Gido CD, Herdendorf TJ, Hammel M, Hura GL, Fu ZQ, Geisbrecht BV, J Biol Chem 300(9):107627 (2024) Europe PMC

SASDVL2 – Ternary complex consisted of Human Chatepsin G, Neutrophil elastase and S.aureus MAP domain-containing protein

Cathepsin G
MAP domain-containing protein
Neutrophil elastase
MWexperimental 49 kDa
MWexpected 62 kDa
VPorod 77 nm3
log I(s) 5.59×101 5.59×100 5.59×10-1 5.59×10-2
Cathepsin G MAP domain-containing protein Neutrophil elastase small angle scattering data  s, nm-1
ln I(s)
Cathepsin G MAP domain-containing protein Neutrophil elastase Guinier plot ln 5.60×101 Rg: 2.8 nm 0 (2.8 nm)-2 s2
(sRg)2I(s)/I(0)
Cathepsin G MAP domain-containing protein Neutrophil elastase Kratky plot 1.104 0 3 sRg
p(r)
Cathepsin G MAP domain-containing protein Neutrophil elastase pair distance distribution function Rg: 2.9 nm 0 Dmax: 9.4 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Cathepsin G MAP domain-containing protein Neutrophil elastase PDB (PROTEIN DATA BANK) model

Synchrotron SAXS data from solutions of Ternary complex consisted of Human Chatepsin G, Neutrophil elastase and S.aureus MAP domain-containing protein in 20 mM HEPES, 140 mM NaCl, pH 7.4 were collected on the 12.3.1 (SIBYLS) beam line at the Advanced Light Source (ALS) storage ring (Berkeley, CA, USA) using a Pilatus3 X 2M detector at a sample-detector distance of 2.1 m and at a wavelength of λ = 0.1127 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). In-line size-exclusion chromatography (SEC) SAS was employed. The SEC parameters were as follows: A 60.00 μl sample at 5 mg/ml was injected at a 0.65 ml/min flow rate onto a Shodex LW-803 column at 4°C. 912 successive 2 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.

Cathepsin G (CG)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   25.4 kDa
 
UniProt   P08311 (22-245)
Sequence   FASTA
 
MAP domain-containing protein (EapH2)
Mol. type   Protein
Organism   Staphylococcus aureus (strain Mu50 / ATCC 700699)
Olig. state   Monomer
Mon. MW   13.1 kDa
 
UniProt   A0A0H3JUK5 (32-146)
Sequence   FASTA
 
Neutrophil elastase (NE)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   23.3 kDa
 
UniProt   P08246 (31-249)
Sequence   FASTA
 
PDB ID   8G24