X-ray crystal structure of PerB from Caulobacter crescentus in complex with CoA and GDP-perosamine at 1.0 Angstrom resolution

Catalytic Mechanism of Perosamine N-Acetyltransferase Revealed by High-Resolution X-ray Crystallographic Studies and Kinetic Analyses.

PerB, Hexapeptide transferase family protein

GHMGAASASLAIGGVVIIGGGGHAKVVIESLRACGETVAAIVDADPTRRAVLGVPVVGDDLALPMLREQGLSRLFVAIGD
NRLRQKLGRKARDHGFSLVNAIHPSAVVSPSVRLGEGVAVMAGVAINADSWIGDLAIINTGAVVDHDCRLGAACHLGPAS
ALAGGVSVGERAFLGVGARVIPGVTIGADTIVGAGGVVVRDLPDSVLAIGVPAKIKGDRS

25-30% PEG5000 MME, 100 mM HEPES, pH 7.5, 5 mM CoA, 5 mM GDP, VAPOR DIFFUSION, HANGING DROP, temperature 295K

wild type enzyme in complex with CoA and GDP-N-acetylperosamine

wild type enzyme in complex with transition state analog

H141N mutant enzyme in complex with CoA and GDP-perosamine

H141A mutant enzyme in complex with CoA and GDP-perosamine

beta helix, acetyltransferase, acetyl coenzyme A, TRANSFERASE

SASLAIGGVVIIGGGGHAKVVIESLRACGETVAAIVDADPTRRAVLGVPVVGDDLALPMLREQGLSRLFVAIGDNRLRQK
LGRKARDHGFSLVNAIHPSAVVSPSVRLGEGVAVMAGVAINADSWIGDLAIINTGAVVDHDCRLGAACHLGPASALAGGV
SVGERAFLGVGARVIPGVTIGADTIVGAGGVVVRDLPDSVLAIGVPAKIKGDRS