1kck

Bacillus circulans strain 251 Cyclodextrin glycosyl transferase mutant N193G

Method: X-RAY DIFFRACTION D_max: 80.9 Å Quality: GOOD

SAXS 散射曲线 SAXS Profile

P(r) 距离分布 P(r) Distribution

下载 Download SAXS (.dat) P(r) (.pr.out) CIF

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1. 结构基本信息 1. Structure Basics

条目编号 entry_id	1kck
沉积日期 deposition_date	2001-11-09
结构标题 title	Bacillus circulans strain 251 Cyclodextrin glycosyl transferase mutant N193G
关键词 keywords	glycosyl transferase, transferase, cylcodextrin, acarbose; TRANSFERASE
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	26.74 Å
回转半径 Rg (电子) rg_electron	25.55 Å
零角强度 I(0) i0	97900900.00
分子量 molecular_weight	76535.0 kDa
排除体积 excluded_volume	95031 Å³
包络体积 envelope_volume	109090 Å³
水化壳体积 shell_volume	34700 Å³
包络直径 envelope_diameter	84.0 Å
壳层 Rg shell_rg	33.82 Å
包络 Rg envelope_rg	25.67 Å
形状 Rg shape_rg	25.53 Å
总 Rg total_rg	26.40 Å
总原子数 total_atoms	5397
残基数 n_residues	686
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	80.9 Å
Rg (实空间) rg_real	26.59 Å
Rg 误差 (实空间) rg_real_error	0.47 Å
I(0) (实空间) i0_real	9.7900e+07
I(0) 误差 (实空间) i0_real_error	1.4240e+06
Rg (倒空间) rg_reciprocal	26.64 Å
I(0) (倒空间) i0_reciprocal	97900000.0000
解质量估计 total_estimate	0.8969
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	32.9 Å
偏度 Skewness skewness	0.155
峰度 Kurtosis kurtosis	-0.541
角度范围 angular_range	— – 0.2950 Å⁻¹
当前正则化参数 α current_alpha	0.0000
最高正则化参数 α highest_alpha	19870000.0000
实空间数据点数 n_real_points	60
GNOM 版本 gnom_version	4.1.3
质量判据 quality_criteria	AN1: 0.000; Oscil: 0.958; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.995; Smooth: 0.790

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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 (9)

Entity 1 polymer

描述 description	CYCLODEXTRIN GLYCOSYLTRANSFERASE
分子量 formula_weight	74518.4 kDa
EC 编号 ec_number	2.4.1.19
突变 mutation	N193G
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	5830

APDTSVSNKQNFSTDVIYQIFTDRFSDGNPANNPTGAAFDGTCTNLRLYCGGDWQGIINKINDGYLTGMGVTAIWISQPVENIYSIINYSGVNNTAYHGYWARDFKKTNPAYGTIADFQNLIAAAHAKNIKVIIDFAPNHTSPASSDQPSFAENGRLYDNGTLLGGYTNDTQNLFHHNGGTDFSTTENGIYKGLYDLADLNHNNSTVDVYLKDAIKMWLDLGIDGIRMDAVKHMPFGWQKSFMAAVNNYKPVFTFGEWFLGVNEVSPENHKFANESGMSLLDFRFAQKVRQVFRDNTDNMYGLKAMLEGSAADYAQVDDQVTFIDNHDMERFHASNANRRKLEQALAFTLTSRGVPAIYYGTEQYMSGGTDPDNRARIPSFSTSTTAYQVIQKLAPLRKCNPAIAYGSTQERWINNDVLIYERKFGSNVAVVAVNRNLNAPASISGLVTSLPQGSYNDVLGGLLNGNTLSVGSGGAASNFTLAAGGTAVWQYTAATATPTIGHVGPMMAKPGVTITIDGRGFGSSKGTVYFGTTAVSGADITSWEDTQIKVKIPAVAGGNYNIKVANAAGTASNVYDNFEVLSGDQVSVRFVVNNATTALGQNVYLTGSVSELGNWDPAKAIGPMYNQVVYQYPNWYYDVSVPAGKTIEFKFLKKQGSTVTWEGGSNHTFTAPSSGTATINVNWQP

来源 Source

来源生物 organism	Bacillus circulans
NCBI 分类编号 ncbi_taxonomy_id	1397
宿主生物 host_organism	Escherichia coli

Entity 2 branched

描述 description	alpha-D-quinovopyranose-(1-4)-alpha-D-glucopyranose
分子量 formula_weight	326.3 kDa
来源方法 src_method	man
拷贝数 entity_count	1

Entity 3 branched

描述 description	alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose
分子量 formula_weight	342.3 kDa
来源方法 src_method	man
拷贝数 entity_count	1

Entity 4 branched

描述 description	alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose
分子量 formula_weight	504.4 kDa
来源方法 src_method	man
拷贝数 entity_count	1

Entity 5 branched

描述 description	alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-beta-D-glucopyranose
分子量 formula_weight	504.4 kDa
来源方法 src_method	man
拷贝数 entity_count	1

Entity 6 non-polymer

描述 description	1-AMINO-2,3-DIHYDROXY-5-HYDROXYMETHYL CYCLOHEX-5-ENE
分子量 formula_weight	159.2 kDa
来源方法 src_method	syn
拷贝数 entity_count	1

Entity 7 non-polymer

描述 description	alpha-D-glucopyranose
分子量 formula_weight	180.2 kDa
来源方法 src_method	man
拷贝数 entity_count	1

Entity 8 non-polymer

描述 description	CALCIUM ION
分子量 formula_weight	40.1 kDa
来源方法 src_method	syn
拷贝数 entity_count	2

Entity 9 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	433

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6. 折叠分类 (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

结构域编号 domain_id	d1kcka1
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.1.18 — E set domains
家族 Family family	b.1.18.2 — E-set domains of sugar-utilizing enzymes

结构域编号 domain_id	d1kcka2
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.3 — Prealbumin-like
超家族 Superfamily superfamily	b.3.1 — Starch-binding domain-like
家族 Family family	b.3.1.1 — Starch-binding domain

结构域编号 domain_id	d1kcka3
类 Class class	b — All beta proteins
折叠类型 Fold fold	b.71 — Glycosyl hydrolase domain
超家族 Superfamily superfamily	b.71.1 — Glycosyl hydrolase domain
家族 Family family	b.71.1.1 — alpha-Amylases, C-terminal beta-sheet domain

结构域编号 domain_id	d1kcka4
类 Class class	c — Alpha and beta proteins (a/b)
折叠类型 Fold fold	c.1 — TIM beta/alpha-barrel
超家族 Superfamily superfamily	c.1.8 — (Trans)glycosidases
家族 Family family	c.1.8.1 — Amylase, catalytic domain

CATH v4.4 (4 domains)

结构域编号 domain_id	1kckA01
类 Class class	3 — Alpha Beta
架构 Architecture architecture	20 — Alpha-Beta Barrel
拓扑 Topology topology	20 — TIM Barrel
同源超家族 H-superfamily homologous superfamily	80 — Glycosidases

结构域编号 domain_id	1kckA02
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	1180 — Golgi alpha-mannosidase II

结构域编号 domain_id	1kckA03
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	1kckA04
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

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7. 引用文献 (1)

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晶胞边长 a length_a	120.686 Å
晶胞边长 b length_b	111.162 Å
晶胞边长 c length_c	65.944 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	90.00 °
晶胞分子数 Z z_pdb	4

空间群 space_group	P 21 21 21
空间群编号 int_tables_number	19
晶系 crystal_system	—

分辨率 resolution	2.430 Å
最低分辨率 resolution_low	26.640 Å
R 因子 r_factor	—
R_work r_work	0.1590
R_free r_free	0.2050

fit	/app/data/saxs_computation/kc/1kck/1kck.fit
pddf	/app/data/pr_computation/kc/1kck/1kck.pr.out
profile	/app/data/saxs_computation/kc/1kck/1kck.dat