2OVF

Crystal Structure of StaL-PAP complex

2OVF の概要

• エントリーDOI: 10.2210/pdb2ovf/pdb
• 分子名称: StaL, ADENOSINE-3'-5'-DIPHOSPHATE (3 entities in total)
• 機能のキーワード: stal-pap complex, sulfotransferase, structural genomics, montreal-kingston bacterial structural genomics initiative, bsgi, unknown function
• 由来する生物種: Streptomyces toyocaensis
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 32637.74

構造登録者

Shi, R.,Matte, A.,Cygler, M.,Montreal-Kingston Bacterial Structural Genomics Initiative (BSGI) (登録日: 2007-02-13, 公開日: 2007-02-27, 最終更新日: 2024-11-13)

主引用文献

Shi, R.,Lamb, S.S.,Bhat, S.,Sulea, T.,Wright, G.D.,Matte, A.,Cygler, M.
Crystal structure of StaL, a glycopeptide antibiotic sulfotransferase from Streptomyces toyocaensis.
J.Biol.Chem., 282:13073-13086, 2007

PubMed Abstract: Over the past decade, antimicrobial resistance has emerged as a major public health crisis. Glycopeptide antibiotics such as vancomycin and teicoplanin are clinically important for the treatment of Gram-positive bacterial infections. StaL is a 3'-phosphoadenosine 5'-phosphosulfate-dependent sulfotransferase capable of sulfating the cross-linked heptapeptide substrate both in vivo and in vitro, yielding the product A47934, a unique teicoplanin-class glycopeptide antibiotic. The sulfonation reaction catalyzed by StaL constitutes the final step in A47934 biosynthesis. Here we report the crystal structure of StaL and its complex with the cofactor product 3'-phosphoadenosine 5'-phosphate. This is only the second prokaryotic sulfotransferase to be structurally characterized. StaL belongs to the large sulfotransferase family and shows higher similarity to cytosolic sulfotransferases (ST) than to the bacterial ST (Stf0). StaL has a novel dimerization motif, different from any other STs that have been structurally characterized. We have also applied molecular modeling to investigate the binding mode of the unique substrate, desulfo-A47934. Based on the structural analysis and modeling results, a series of residues was mutated and kinetically characterized. In addition to the conserved residues (Lys(12), His(67), and Ser(98)), molecular modeling, fluorescence quenching experiments, and mutagenesis studies identified several other residues essential for substrate binding and/or activity, including Trp(34), His(43), Phe(77), Trp(132), and Glu(205).

PubMed: 17329243
DOI: 10.1074/jbc.M611912200

実験手法

X-RAY DIFFRACTION (2.95 Å)