ジャーナル: Open Biol / 年: 2014 タイトル: The basic keratin 10-binding domain of the virulence-associated pneumococcal serine-rich protein PsrP adopts a novel MSCRAMM fold. 著者: Tim Schulte / Jonas Löfling / Cecilia Mikaelsson / Alexey Kikhney / Karina Hentrich / Aurora Diamante / Christine Ebel / Staffan Normark / Dmitri Svergun / Birgitta Henriques-Normark / Adnane Achour / 要旨: Streptococcus pneumoniae is a major human pathogen, and a leading cause of disease and death worldwide. Pneumococcal invasive disease is triggered by initial asymptomatic colonization of the human ...Streptococcus pneumoniae is a major human pathogen, and a leading cause of disease and death worldwide. Pneumococcal invasive disease is triggered by initial asymptomatic colonization of the human upper respiratory tract. The pneumococcal serine-rich repeat protein (PsrP) is a lung-specific virulence factor whose functional binding region (BR) binds to keratin-10 (KRT10) and promotes pneumococcal biofilm formation through self-oligomerization. We present the crystal structure of the KRT10-binding domain of PsrP (BR187-385) determined to 2.0 Å resolution. BR187-385 adopts a novel variant of the DEv-IgG fold, typical for microbial surface components recognizing adhesive matrix molecules adhesins, despite very low sequence identity. An extended β-sheet on one side of the compressed, two-sided barrel presents a basic groove that possibly binds to the acidic helical rod domain of KRT10. Our study also demonstrates the importance of the other side of the barrel, formed by extensive well-ordered loops and stabilized by short β-strands, for interaction with KRT10.
履歴
登録
2012年12月17日
登録サイト: PDBE / 処理サイト: PDBE
改定 1.0
2014年1月8日
Provider: repository / タイプ: Initial release
改定 1.1
2014年1月29日
Group: Database references
改定 1.2
2019年5月8日
Group: Advisory / Data collection ...Advisory / Data collection / Experimental preparation / Other カテゴリ: exptl_crystal_grow / pdbx_database_proc ...exptl_crystal_grow / pdbx_database_proc / pdbx_database_status / pdbx_unobs_or_zero_occ_atoms Item: _exptl_crystal_grow.method / _pdbx_database_status.recvd_author_approval
手法: 蒸気拡散法, シッティングドロップ法 詳細: WELL-DIFFRACTING CRYSTALS OF WILD-TYPE AND SE-MET-BR187-385 WERE OBTAINED IN 0.2 M LITHIUM SULFATE, 0.1 M SODIUM ACETATE TRIHYDRATE PH 4.6, 25% PEG4000 (W/V) USING THE SITTING DROP VAPOR- ...詳細: WELL-DIFFRACTING CRYSTALS OF WILD-TYPE AND SE-MET-BR187-385 WERE OBTAINED IN 0.2 M LITHIUM SULFATE, 0.1 M SODIUM ACETATE TRIHYDRATE PH 4.6, 25% PEG4000 (W/V) USING THE SITTING DROP VAPOR-DIFFUSION METHOD FOLLOWED BY MICRO-SEEDING.
プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray
放射波長
波長: 0.977 Å / 相対比: 1
反射
解像度: 2→48.3 Å / Num. obs: 44053 / % possible obs: 100 % / Observed criterion σ(I): 3 / 冗長度: 6.7 % / Biso Wilson estimate: 35.34 Å2 / Rmerge(I) obs: 0.06 / Net I/σ(I): 18.2
反射 シェル
解像度: 2→2.05 Å / 冗長度: 6.7 % / Rmerge(I) obs: 0.7 / Mean I/σ(I) obs: 3 / % possible all: 100
-
解析
ソフトウェア
名称
バージョン
分類
PHENIX
(PHENIX.REFINE)
精密化
XDS
データ削減
XSCALE
データスケーリング
PHASER
位相決定
精密化
構造決定の手法: 分子置換 開始モデル: MODEL OBTAINED FROM SAD EXPERIMENT 解像度: 2→48.318 Å / SU ML: 0.61 / σ(F): 1.31 / 位相誤差: 16.43 / 立体化学のターゲット値: ML 詳細: A SINGLE RAMACHANDRAN PLOT OUTLIER WAS FOUND IN THE FINAL MODEL CORRESPONDING TO RESIDUE T271, LOCATED IN A LOOP REGION WITH WEAK ELECTRON DENSITY. RESIDUES T311, Q312 AND G313 ARE LOCALIZED ...詳細: A SINGLE RAMACHANDRAN PLOT OUTLIER WAS FOUND IN THE FINAL MODEL CORRESPONDING TO RESIDUE T271, LOCATED IN A LOOP REGION WITH WEAK ELECTRON DENSITY. RESIDUES T311, Q312 AND G313 ARE LOCALIZED AT THE BEGINNING OF A TURN MOTIF WHICH WAS DIFFICULT TO MODEL. RESIDUES S376 AND S377 ARE LOCALIZED AT THE C-TERMINUS OF THE PROTEIN WITH WEAK ELECTRON DENSITY.
Rfactor
反射数
%反射
Rfree
0.201
2176
4.9 %
Rwork
0.1769
-
-
obs
0.1781
44052
99.95 %
溶媒の処理
減衰半径: 0.98 Å / VDWプローブ半径: 1.2 Å / 溶媒モデル: FLAT BULK SOLVENT MODEL / Bsol: 51.984 Å2 / ksol: 0.373 e/Å3
原子変位パラメータ
Biso mean: 42.5 Å2
Baniso -1
Baniso -2
Baniso -3
1-
0 Å2
0 Å2
0 Å2
2-
-
0 Å2
0 Å2
3-
-
-
0 Å2
精密化ステップ
サイクル: LAST / 解像度: 2→48.318 Å
タンパク質
核酸
リガンド
溶媒
全体
原子数
1352
0
28
114
1494
拘束条件
Refine-ID
タイプ
Dev ideal
数
X-RAY DIFFRACTION
f_bond_d
0.012
1403
X-RAY DIFFRACTION
f_angle_d
1.417
1896
X-RAY DIFFRACTION
f_dihedral_angle_d
13.242
494
X-RAY DIFFRACTION
f_chiral_restr
0.09
211
X-RAY DIFFRACTION
f_plane_restr
0.006
239
LS精密化 シェル
解像度 (Å)
Rfactor Rfree
Num. reflection Rfree
Rfactor Rwork
Num. reflection Rwork
Refine-ID
% reflection obs (%)
1.9999-2.0434
0.2896
133
0.2604
2593
X-RAY DIFFRACTION
100
2.0434-2.0909
0.2142
134
0.2408
2642
X-RAY DIFFRACTION
100
2.0909-2.1432
0.1921
139
0.2074
2611
X-RAY DIFFRACTION
100
2.1432-2.2012
0.2091
136
0.1832
2639
X-RAY DIFFRACTION
100
2.2012-2.2659
0.2004
131
0.1741
2619
X-RAY DIFFRACTION
100
2.2659-2.3391
0.1963
141
0.1675
2625
X-RAY DIFFRACTION
100
2.3391-2.4227
0.2224
138
0.1749
2581
X-RAY DIFFRACTION
100
2.4227-2.5197
0.1948
137
0.1673
2613
X-RAY DIFFRACTION
100
2.5197-2.6343
0.196
140
0.1777
2630
X-RAY DIFFRACTION
100
2.6343-2.7732
0.1871
136
0.1575
2621
X-RAY DIFFRACTION
100
2.7732-2.9469
0.1898
137
0.1649
2608
X-RAY DIFFRACTION
100
2.9469-3.1744
0.2026
142
0.1746
2608
X-RAY DIFFRACTION
100
3.1744-3.4938
0.189
135
0.1759
2628
X-RAY DIFFRACTION
100
3.4938-3.9992
0.1717
132
0.167
2605
X-RAY DIFFRACTION
100
3.9992-5.0377
0.1796
133
0.1442
2622
X-RAY DIFFRACTION
100
5.0377-48.332
0.2603
132
0.2174
2631
X-RAY DIFFRACTION
100
精密化 TLS
手法: refined / Origin x: -15.895 Å / Origin y: -34.4247 Å / Origin z: -4.5657 Å