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Summary Structural details Experimental details Functional details Sequence Neighbor History Downloads

5O9Z

Cryo-EM structure of a pre-catalytic human spliceosome primed for activation (B complex)

Chains

Entity	Asym IDs	Number of Exact matches
1	A	77
2	B	65
3	C	52
4	D	51
5	E	25
6	F	1
7	G	31
8	H	26
9	I	13
10	J	30
11	K	11
12	L	7
13	M	10
14	N	11
15	O	32
16	P	30
17	Q	8
18	R	4
19	S TA Z	182
20	AA T UA	188
21	BA U VA	188
22	CA V WA	187
23	DA W XA	156
24	EA X YA	132
25	FA Y ZA	185
26	GA	18
27	HA	18
28	IA	18
29	JA	18
30	KA	18
31	LA	18
32	MA	18
33	NA	63
34	OA	51
35	PA	65
36	QA	62
37	RA
38	SA	49
39	AB	7
40	BB	72
41	CB	10
42	DB	13
43	EB	58

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253795

PDB entries from 2026-05-20

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