SAXSdb — 2ipk

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1. 结构基本信息 1. Structure Basics

条目编号 entry_id	2ipk
沉积日期 deposition_date	2006-10-12
结构标题 title	;Crystal Structure of the MHC Class II Molecule HLA-DR1 in Complex with the Fluorogenic Peptide, AcPKXVKQNTLKLAT (X=3-[5-(dimethylamino)-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl]-L-alanine) and the Superantigen, SEC3 Variant 3B2 ;
关键词 keywords	;HLA, DR1, MHC, Major Histocompatibility Complex, Fluorogenic Probe, SEC3, 4-(N, N-dimethylamino)phthalimidoalanyl, DAPA, IMMUNE SYSTEM ;; IMMUNE SYSTEM
实验方法 method	X-RAY DIFFRACTION

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2. SAXS 参数 (CRYSOL 理论计算) 2. SAXS Parameters (CRYSOL)

回转半径 Rg (Guinier) rg_guinier	30.50 Å
回转半径 Rg (电子) rg_electron	29.76 Å
零角强度 I(0) i0	82049400.00
分子量 molecular_weight	71454.0 kDa
排除体积 excluded_volume	89264 Å³
包络体积 envelope_volume	113090 Å³
水化壳体积 shell_volume	32594 Å³
包络直径 envelope_diameter	112.5 Å
壳层 Rg shell_rg	35.88 Å
包络 Rg envelope_rg	29.81 Å
形状 Rg shape_rg	29.73 Å
总 Rg total_rg	30.40 Å
总原子数 total_atoms	5045
残基数 n_residues	613
球谐函数阶数 n_harmonics	20
q 范围 q_range	— – 0.5000 Å⁻¹
数据点数 n_points	101
壳层类型 shell_type	directional
溶剂电子密度 solvent_density	0.3340 e/Å³
壳层衬度 contrast_shell	0.0300 e/Å³
CRYSOL 版本 crysol_version	4.1.3

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3. P(r) 距离分布 (GNOM 反演) 3. P(r) Analysis (GNOM)

最大尺寸 Dmax dmax	105.1 Å
Rg (实空间) rg_real	30.58 Å
Rg 误差 (实空间) rg_real_error	0.89 Å
I(0) (实空间) i0_real	8.2050e+07
I(0) 误差 (实空间) i0_real_error	1.2610e+06
Rg (倒空间) rg_reciprocal	30.55 Å
I(0) (倒空间) i0_reciprocal	82050000.0000
解质量估计 total_estimate	0.8733
解质量评级 solution_quality	GOOD a GOOD solution
P(r) 峰数 n_peaks	2
主峰位置 r_peak_primary	34.4 Å
偏度 Skewness skewness	0.409
峰度 Kurtosis kurtosis	-0.213
角度范围 angular_range	— – 0.2600 Å⁻¹
当前正则化参数 α current_alpha	0.0000
最高正则化参数 α highest_alpha	12980000.0000
实空间数据点数 n_real_points	53
GNOM 版本 gnom_version	4.1.3
质量判据 quality_criteria	AN1: 0.000; Oscil: 0.836; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.912; Smooth: 0.929

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4. 晶体学与实验 4. Crystallography & Experiment

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5. 实体与聚合体信息 (5)

Entity 1 polymer

描述 description	HLA class II histocompatibility antigen, DR alpha chain
分子量 formula_weight	21287.1 kDa
来源方法 src_method	man
拷贝数 entity_count	1

聚合体 Polymer

聚合体类型 type	polypeptide(L)
链编号 strand_id	A
原子数 atom_count	5464

MIKEEHVIIQAEFYLNPDQSGEFMFDFDGDEIFHVDMAKKETVWRLEEFGRFASFEAQGALANIAVDKANLEIMTKRSNYTPITNVPPEVTVLTNSPVELREPNVLICFIDKFTPPVVNVTWLRNGKPVTTGVSETVFLPREDHLFRKFHYLPFLPSTEDVYDCRVEHWGLDEPLLKHWEFDA

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI 分类编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli BL21(DE3)

Entity 2 polymer

描述 description	HLA class II histocompatibility antigen, DRB1-1 beta chain
分子量 formula_weight	22080.7 kDa
来源方法 src_method	man
拷贝数 entity_count	1

聚合体 Polymer

聚合体类型 type	polypeptide(L)
链编号 strand_id	B

GDTRPRFLWQLKFECHFFNGTERVRLLERCIYNQEESVRFDSDVGEYRAVTELGRPDAEYWNSQKDLLEQRRAAVDTYCRHNYGVGESFTVQRRVEPKVTVYPSKTQPLQHHNLLVCSVSGFYPGSIEVRWFRNGQEEKAGVVSTGLIQNGDWTFQTLVMLETVPRSGEVYTCQVEHPSVTSPLTVEWRA

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI 分类编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli BL21(DE3)

Entity 3 polymer

描述 description	HA related Fluorogenic Peptide, AcPKXVKQNTLKLAT (X=3-[5-(dimethylamino)-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl]-L-alanine)
分子量 formula_weight	1628.9 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

聚合体 Polymer

聚合体类型 type	polypeptide(L)
链编号 strand_id	C

XPKWVKQNTLKLAT

Entity 4 polymer

描述 description	Enterotoxin type C-3
分子量 formula_weight	27852.3 kDa
突变 mutation	K70S, L72F, A73K, H74W
来源方法 src_method	man
拷贝数 entity_count	1

聚合体 Polymer

聚合体类型 type	polypeptide(L)
链编号 strand_id	D

MESQPDPMPDDLHKSSEFTGTMGNMKYLYDDHYVSATKVKSVDSFFKWDLIYNISDKKLKNYDKVKTELLNEDLAKKYKDEVVDVYGSNYYVNCYFSSKDNVGKVTGGKTCMYGGITKHEGNHFDNGNLQNVLVRVYENKRNTISFEVQTDKKSVTAQELDIKARNFLINKKNLYEFNSSPYETGYIKFIENNGNTFWYDMMPAPGDKFDQSKYLMMYNDNKTVDSKSVKIEVHLTTKNG

来源 Source

来源生物 organism	Staphylococcus aureus subsp. aureus Mu50
NCBI 分类编号 ncbi_taxonomy_id	158878
宿主生物 host_organism	Escherichia coli

Entity 5 water

描述 description	water
分子量 formula_weight	18.0 kDa
来源方法 src_method	nat
拷贝数 entity_count	419

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6. 折叠分类 (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

结构域编号 domain_id	d2ipka1
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.1 — Immunoglobulin-like beta-sandwich
超家族 Superfamily superfamily	b.1.1 — Immunoglobulin
家族 Family family	b.1.1.2 — C1 set domains (antibody constant domain-like)

结构域编号 domain_id	d2ipka2
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.19 — MHC antigen-recognition domain
超家族 Superfamily superfamily	d.19.1 — MHC antigen-recognition domain
家族 Family family	d.19.1.1 — MHC antigen-recognition domain

结构域编号 domain_id	d2ipkb1
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.1 — Immunoglobulin-like beta-sandwich
超家族 Superfamily superfamily	b.1.1 — Immunoglobulin
家族 Family family	b.1.1.2 — C1 set domains (antibody constant domain-like)

结构域编号 domain_id	d2ipkb2
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.19 — MHC antigen-recognition domain
超家族 Superfamily superfamily	d.19.1 — MHC antigen-recognition domain
家族 Family family	d.19.1.1 — MHC antigen-recognition domain

结构域编号 domain_id	d2ipkd1
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.40 — OB-fold
超家族 Superfamily superfamily	b.40.2 — Bacterial enterotoxins
家族 Family family	b.40.2.2 — Superantigen toxins, N-terminal domain

结构域编号 domain_id	d2ipkd2
类 Class class	d — Alpha and beta proteins (a+b)
折叠类型 Fold fold	d.15 — beta-Grasp (ubiquitin-like)
超家族 Superfamily superfamily	d.15.6 — Superantigen toxins, C-terminal domain
家族 Family family	d.15.6.1 — Superantigen toxins, C-terminal domain

CATH v4.4 (6 domains)

结构域编号 domain_id	2ipkA01
类 Class class	3 — Alpha Beta
架构 Architecture architecture	10 — Roll
拓扑 Topology topology	320 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1
同源超家族 H-superfamily homologous superfamily	10 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1

结构域编号 domain_id	2ipkA02
类 Class class	2 — Mainly Beta
架构 Architecture architecture	60 — Sandwich
拓扑 Topology topology	40 — Immunoglobulin-like
同源超家族 H-superfamily homologous superfamily	10 — Immunoglobulins

结构域编号 domain_id	2ipkB01
类 Class class	3 — Alpha Beta
架构 Architecture architecture	10 — Roll
拓扑 Topology topology	320 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1
同源超家族 H-superfamily homologous superfamily	10 — Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1

结构域编号 domain_id	2ipkB02
类 Class class	2 — Mainly Beta
架构 Architecture architecture	60 — Sandwich
拓扑 Topology topology	40 — Immunoglobulin-like
同源超家族 H-superfamily homologous superfamily	10 — Immunoglobulins

结构域编号 domain_id	2ipkD01
类 Class class	3 — Alpha Beta
架构 Architecture architecture	10 — Roll
拓扑 Topology topology	20 — Ubiquitin-like (UB roll)
同源超家族 H-superfamily homologous superfamily	120 —

结构域编号 domain_id	2ipkD02
类 Class class	2 — Mainly Beta
架构 Architecture architecture	40 — Beta Barrel
拓扑 Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
同源超家族 H-superfamily homologous superfamily	110 —

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7. 引用文献 (1)

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晶胞边长 a length_a	171.980 Å
晶胞边长 b length_b	171.980 Å
晶胞边长 c length_c	121.129 Å
晶胞夹角 α angle_alpha	90.00 °
晶胞夹角 β angle_beta	90.00 °
晶胞夹角 γ angle_gamma	120.00 °
晶胞分子数 Z z_pdb	9

空间群 space_group	H 3
空间群编号 int_tables_number	146
晶系 crystal_system	—

分辨率 resolution	2.300 Å
最低分辨率 resolution_low	32.500 Å
R 因子 r_factor	0.2250
R_work r_work	0.2030
R_free r_free	0.2240

fit	/app/data/saxs_computation/ip/2ipk/2ipk.fit
pddf	/app/data/pr_computation/ip/2ipk/2ipk.pr.out
profile	/app/data/saxs_computation/ip/2ipk/2ipk.dat

;Crystal Structure of the MHC Class II Molecule HLA-DR1 in Complex with the Fluorogenic Peptide, AcPKXVKQNTLKLAT (X=3-[5-(dimethylamino)-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl]-L-alanine) and the Superantigen, SEC3 Variant 3B2 ;

SAXS 散射曲线 SAXS Profile

P(r) 距离分布 P(r) Distribution

1. 结构基本信息 1. Structure Basics

2. SAXS 参数 (CRYSOL 理论计算) 2. SAXS Parameters (CRYSOL)

3. P(r) 距离分布 (GNOM 反演) 3. P(r) Analysis (GNOM)

4. 晶体学与实验 4. Crystallography & Experiment

晶胞参数 Unit Cell

对称性 Symmetry

精修参数 Refinement

衍射实验 Diffraction

5. 实体与聚合体信息 (5)

Entity 1 polymer

聚合体 Polymer

来源 Source

Entity 2 polymer

聚合体 Polymer

来源 Source

Entity 3 polymer

聚合体 Polymer

Entity 4 polymer

聚合体 Polymer

来源 Source

Entity 5 water

6. 折叠分类 (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. 引用文献 (1)

8. 文件与曲线 (10)

Files (7)

Curves (3)