8ti1

Cryo-EM structure of a SUR1/Kir6.2-Q52R ATP-sensitive potassium channel in the presence of PIP2 in the open conformation

Method: ELECTRON MICROSCOPY D_max: 220.0 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

▼

1. 结构基本信息 1. Structure Basics

条目编号 entry_id	8ti1
沉积日期 deposition_date	2023-07-18
结构标题 title	Cryo-EM structure of a SUR1/Kir6.2-Q52R ATP-sensitive potassium channel in the presence of PIP2 in the open conformation
关键词 keywords	;ATP-sensitive potassium channel, KATP channel, SUR1, Kir6.2-Q52R, potassium transport, metabolic sensor, diabetes, phospholipid binding, PIP2, TRANSPORT PROTEIN ;; TRANSPORT PROTEIN
实验方法 method	ELECTRON MICROSCOPY

▼

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

回转半径 Rg (Guinier) rg_guinier	67.88 Å
回转半径 Rg (电子) rg_electron	66.91 Å
零角强度 I(0) i0	5043180000.00
分子量 molecular_weight	637670.0 kDa
排除体积 excluded_volume	812910 Å³
包络体积 envelope_volume	1311500 Å³
水化壳体积 shell_volume	160170 Å³
包络直径 envelope_diameter	219.2 Å
壳层 Rg shell_rg	68.01 Å
包络 Rg envelope_rg	66.34 Å
形状 Rg shape_rg	66.99 Å
总 Rg total_rg	66.60 Å
总原子数 total_atoms	44964
残基数 n_residues	5848
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

▼

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

最大尺寸 Dmax dmax	220.0 Å
Rg (实空间) rg_real	67.73 Å
Rg 误差 (实空间) rg_real_error	1.86 Å
I(0) (实空间) i0_real	5.0430e+09
I(0) 误差 (实空间) i0_real_error	1.0360e+08
Rg (倒空间) rg_reciprocal	68.30 Å
I(0) (倒空间) i0_reciprocal	5048000000.0000
解质量估计 total_estimate	0.8338
解质量评级 solution_quality	GOOD a GOOD solution
P(r) 峰数 n_peaks	1
主峰位置 r_peak_primary	95.7 Å
偏度 Skewness skewness	0.184
峰度 Kurtosis kurtosis	-0.406
角度范围 angular_range	— – 0.1150 Å⁻¹
当前正则化参数 α current_alpha	0.0000
最高正则化参数 α highest_alpha	412600000.0000
实空间数据点数 n_real_points	24
GNOM 版本 gnom_version	4.1.3
质量判据 quality_criteria	AN1: 0.000; Oscil: 0.860; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.976; Smooth: 0.278

▶

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

▶

5. 实体与聚合体信息 (8)

Entity 1 polymer

描述 description	ATP-sensitive inward rectifier potassium channel 11
分子量 formula_weight	43690.8 kDa
突变 mutation	Q52R
来源方法 src_method	man
拷贝数 entity_count	4

聚合体 Polymer

聚合体类型 type	polypeptide(L)
链编号 strand_id	A,B,C,D
原子数 atom_count	45034

MLSRKGIIPEEYVLTRLAEDPTEPRYRTRERRARFVSKKGNCNVAHKNIRERGRFLQDVFTTLVDLKWPHTLLIFTMSFLCSWLLFAMVWWLIAFAHGDLAPGEGTNVPCVTSIHSFSSAFLFSIEVQVTIGFGGRMVTEECPLAILILIVQNIVGLMINAIMLGCIFMKTAQAHRRAETLIFSKHAVITLRHGRLCFMLRVGDLRKSMIISATIHMQVVRKTTSPEGEVVPLHQVDIPMENGVGGNSIFLVAPLIIYHVIDSNSPLYDLAPSDLHHHQDLEIIVILEGVVETTGITTQARTSYLADEILWGQRFVPIVAEEDGRYSVDYSKFGNTVKVPTPLCTARQLDEDRSLLDALTLASSRGPLRKRSVAVAKAKPKFSISPDSLS

来源 Source

来源生物 organism	Rattus norvegicus
通用名 common_name	Norway rat
NCBI 分类编号 ncbi_taxonomy_id	10116
宿主生物 host_organism	Chlorocebus aethiops

Entity 2 polymer

描述 description	SUR1
分子量 formula_weight	177296.6 kDa
来源方法 src_method	man
拷贝数 entity_count	4

聚合体 Polymer

聚合体类型 type	polypeptide(L)
链编号 strand_id	E,H,G,F

MPLAFCGTENHSAAYRVDQGVLNNGCFVDALNVVPHVFLLFITFPILFIGWGSQSSKVHIHHSTWLHFPGHNLRWILTFILLFVLVCEIAEGILSDGVTESRHLHLYMPAGMAFMAAITSVVYYHNIETSNFPKLLIALLIYWTLAFITKTIKFVKFYDHAIGFSQLRFCLTGLLVILYGMLLLVEVNVIRVRRYIFFKTPREVKPPEDLQDLGVRFLQPFVNLLSKGTYWWMNAFIKTAHKKPIDLRAIGKLPIAMRALTNYQRLCVAFDAQARKDTQSPQGARAIWRALCHAFGRRLILSSTFRILADLLGFAGPLCIFGIVDHLGKENHVFQPKTQFLGVYFVSSQEFLGNAYVLAVLLFLALLLQRTFLQASYYVAIETGINLRGAIQTKIYNKIMHLSTSNLSMGEMTAGQICNLVAIDTNQLMWFFFLCPNLWAMPVQIIVGVILLYYILGVSALIGAAVIILLAPVQYFVATKLSQAQRSTLEHSNERLKQTNEMLRGMKLLKLYAWESIFCSRVEVTRRKEMTSLRAFAVYTSISIFMNTAIPIAAVLITFVGHVSFFKESDLSPSVAFASLSLFHILVTPLFLLSSVVRSTVKALVSVKKLSEFLSSAEIREEQCAPREPAPQGQAGKYQAVPLKVVNRKRPAREEVRDLLGPLQRLAPSMDGDADNFCVQIIGGFFTWTPDGIPTLSNITIRIPRGQLTMIVGQVGCGKSSLLLATLGEMQKVSGAVFWNSNLPDSEGEDPSSPERETAAGSDIRSRGPVAYASQKPWLLNATVEENITFESPFNKQRYKMVIEACSLQPDIDILPHGDQTQIGERGINLSGGQRQRISVARALYQQTNVVFLDDPFSALDVHLSDHLMQAGILELLRDDKRTVVLVTHKLQYLPHADWIIAMKDGTIQREGTLKDFQRSECQLFEHWKTLMNRQDQELEKETVMERKASEPSQGLPRAMSSRDGLLLDEEEEEEEAAESEEDDNLSSVLHQRAKIPWRACTKYLSSAGILLLSLLVFSQLLKHMVLVAIDYWLAKWTDSALVLSPAARNCSLSQECDLDQSVYAMVFTLLCSLGIVLCLVTSVTVEWTGLKVAKRLHRSLLNRIILAPMRFFETTPLGSILNRFSSDCNTIDQHIPSTLECLSRSTLLCVSALTVISYVTPVFLVALLPLAVVCYFIQKYFRVASRDLQQLDDTTQLPLLSHFAETVEGLTTIRAFRYEARFQQKLLEYTDSNNIASLFLTAANRWLEVRMEYIGACVVLIAAATSISNSLHRELSAGLVGLGLTYALMVSNYLNWMVRNLADMEIQLGAVKRIHALLKTEAESYEGLLAPSLIPKNWPDQGKIQIQNLSVRYDSSLKPVLKHVNALISPGQKIGICGRTGSGKSSFSLAFFRMVDMFEGRIIIDGIDIAKLPLHTLRSRLSIILQDPVLFSGTIRFNLDPEKKCSDSTLWEALEIAQLKLVVKALPGGLDAIITEGGENFSQGQRQLFCLARAFVRKTSIFIMDEATASIDMATENILQKVVMTAFADRTVVTIAHRVHTILSADLVMVLKRGAILEFDKPETLLSQKDSVFASFVRADK

来源 Source

来源生物 organism	Mesocricetus auratus
通用名 common_name	golden hamster
NCBI 分类编号 ncbi_taxonomy_id	10036
宿主生物 host_organism	Chlorocebus aethiops

Entity 3 non-polymer

描述 description	;[(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phospho ryl]oxy-propan-2-yl] (8Z)-icosa-5,8,11,14-tetraenoate ;
分子量 formula_weight	1047.1 kDa
来源方法 src_method	syn
拷贝数 entity_count	8

Entity 4 non-polymer

描述 description	POTASSIUM ION
分子量 formula_weight	39.1 kDa
来源方法 src_method	syn
拷贝数 entity_count	4

Entity 5 non-polymer

描述 description	DI-PALMITOYL-3-SN-PHOSPHATIDYLETHANOLAMINE
分子量 formula_weight	692.0 kDa
来源方法 src_method	syn
拷贝数 entity_count	4

Entity 6 non-polymer

描述 description	O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phosphoryl]-L-serine
分子量 formula_weight	792.1 kDa
来源方法 src_method	syn
拷贝数 entity_count	8

Entity 7 non-polymer

描述 description	2-acetamido-2-deoxy-beta-D-glucopyranose
分子量 formula_weight	221.2 kDa
来源方法 src_method	syn
拷贝数 entity_count	4

Entity 8 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	14

▶

7. 引用文献 (1)

▶

晶胞边长 a length_a	1.000 Å
晶胞边长 b length_b	1.000 Å
晶胞边长 c length_c	1.000 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	—

空间群 space_group	P 1
空间群编号 int_tables_number	1
晶系 crystal_system	triclinic

分辨率 resolution	2.90 Å
分辨率测定方法 resolution_method	—
颗粒数 num_particles	14115

fit	/app/data/saxs_computation/ti/8ti1/8ti1.fit
pddf	/app/data/pr_computation/ti/8ti1/8ti1.pr.out
profile	/app/data/saxs_computation/ti/8ti1/8ti1.dat

Cryo-EM structure of a SUR1/Kir6.2-Q52R ATP-sensitive potassium channel in the presence of PIP2 in the open conformation

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

冷冻电镜 EM 3D

5. 实体与聚合体信息 (8)

Entity 1 polymer

聚合体 Polymer

来源 Source

Entity 2 polymer

聚合体 Polymer

来源 Source

Entity 3 non-polymer

Entity 4 non-polymer

Entity 5 non-polymer

Entity 6 non-polymer

Entity 7 non-polymer

Entity 8 water

7. 引用文献 (1)

8. 文件与曲线 (10)

Files (7)

Curves (3)