28UH | pdb_000028uh

E. coli 70S ribosome, trapped conformational ground state of SSU-h44 apical loop, with A/P- and P/E-site tRNA

• PDB DOI: https://doi.org/10.2210/pdb28UH/pdb
• EM Map EMD-56827: EMDB EMDataResource

• Classification: RIBOSOME
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2026-02-20 Released: 2026-05-20 
• Deposition Author(s): Steinmetzger, C., Riad, M., Petzold, K.
• Funding Organization(s): European Molecular Biology Organization (EMBO), H2020 Marie Curie Actions of the European Commission, The Swedish Foundation for Strategic Research, Swedish Research Council, Ake Wiberg Foundation, Other private, Carl Trygger Foundation

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.06 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental

Literature

Universal 3D Motif dynamics in RNA: The A-minor Switch

Steinmetzger, C., Karlsson, H., Fontana, C., Galindo Riera, N., Riad, M., Kosek, D., Schlagnitweit, J., Steiner, E., Friebe Sandoz, S., Andersson, E.R., Petzold, K.

(2026) bioRxiv 

• DOI: https://doi.org/10.64898/2026.05.08.718354

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 49-mer - A1B1C1D1E1F1G1H1I1J1K1L1M1N1O1P1Q1R1S1T1U1V1W1X1Y1Z1a1b1c1d1e1f1g1h1i1j1k1l1m1n1o1p1q1r1s1t1u1v1w1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 49-mer - A2B1C1D1E1F1G1H1I1J1K1L1M1N1O1P1Q1R1S1T1U1V1W1X1Y1Z1a1b1c1d1e1f1g1h1i1j1k1l1m1n1o1p1q1r1s1t1u1v1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 2,203.95 kDa 
• Atom Count: 150,006 
• Modeled Residue Count: 10,228 
• Deposited Residue Count: 10,645 
• Unique protein chains: 49
• Unique nucleic acid chains: 6

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL36A	A [auth 3]	38	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7Q6 (Escherichia coli (strain K12)) Explore P0A7Q6  Go to UniProtKB:  P0A7Q6

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL31	B [auth 4]	70	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7M9 (Escherichia coli (strain K12)) Explore P0A7M9  Go to UniProtKB:  P0A7M9

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS11	C [auth K]	129	Escherichia coli	Mutation(s): 1
UniProt
Find proteins for P0A7R9 (Escherichia coli (strain K12)) Explore P0A7R9  Go to UniProtKB:  P0A7R9

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS12	D [auth L]	124	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7S3 (Escherichia coli (strain K12)) Explore P0A7S3  Go to UniProtKB:  P0A7S3

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS14	E [auth N]	101	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0AG59 (Escherichia coli (strain K12)) Explore P0AG59  Go to UniProtKB:  P0AG59

Entity ID: 7
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL2	G [auth c]	273	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P60422 (Escherichia coli (strain K12)) Explore P60422  Go to UniProtKB:  P60422

Entity ID: 8
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL3	H [auth d]	209	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P60438 (Escherichia coli (strain K12)) Explore P60438  Go to UniProtKB:  P60438

Entity ID: 9
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL15	I [auth k]	144	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P02413 (Escherichia coli (strain K12)) Explore P02413  Go to UniProtKB:  P02413

Entity ID: 10
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL16	J [auth l]	136	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0ADY7 (Escherichia coli (strain K12)) Explore P0ADY7  Go to UniProtKB:  P0ADY7

Entity ID: 11
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL17	K [auth m]	127	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0AG44 (Escherichia coli (strain K12)) Explore P0AG44  Go to UniProtKB:  P0AG44

Entity ID: 12
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL22	L [auth r]	110	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P61175 (Escherichia coli (strain K12)) Explore P61175  Go to UniProtKB:  P61175

Entity ID: 13
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL32	M [auth z]	57	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7N4 (Escherichia coli (strain K12)) Explore P0A7N4  Go to UniProtKB:  P0A7N4

Entity ID: 18
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL33	R [auth 0]	55	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7N9 (Escherichia coli (strain K12)) Explore P0A7N9  Go to UniProtKB:  P0A7N9

Entity ID: 19
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL34	S [auth 1]	46	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7P5 (Escherichia coli (strain K12)) Explore P0A7P5  Go to UniProtKB:  P0A7P5

Entity ID: 20
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL35	T [auth 2]	65	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7Q1 (Escherichia coli (strain K12)) Explore P0A7Q1  Go to UniProtKB:  P0A7Q1

Entity ID: 21
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS2	U [auth B]	241	Escherichia coli	Mutation(s): 0  Gene Names: rpsB, b0169, JW0164
UniProt
Find proteins for P0A7V0 (Escherichia coli (strain K12)) Explore P0A7V0  Go to UniProtKB:  P0A7V0

Entity ID: 22
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS3	V [auth C]	233	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7V3 (Escherichia coli (strain K12)) Explore P0A7V3  Go to UniProtKB:  P0A7V3

Entity ID: 23
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS4	W [auth D]	206	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7V8 (Escherichia coli (strain K12)) Explore P0A7V8  Go to UniProtKB:  P0A7V8

Entity ID: 24
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS5	X [auth E]	167	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7W1 (Escherichia coli (strain K12)) Explore P0A7W1  Go to UniProtKB:  P0A7W1

Entity ID: 25
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein bS6, fully modified isoform	Y [auth F]	135	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P02358 (Escherichia coli (strain K12)) Explore P02358  Go to UniProtKB:  P02358

Entity ID: 26
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS7	Z [auth G]	179	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P02359 (Escherichia coli (strain K12)) Explore P02359  Go to UniProtKB:  P02359

Entity ID: 27
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS8	AA [auth H]	130	Escherichia coli	Mutation(s): 0  Gene Names: rpsH, b3306, JW3268
UniProt
Find proteins for P0A7W7 (Escherichia coli (strain K12)) Explore P0A7W7  Go to UniProtKB:  P0A7W7

Entity ID: 28
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS9	BA [auth I]	130	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7X3 (Escherichia coli (strain K12)) Explore P0A7X3  Go to UniProtKB:  P0A7X3

Entity ID: 29
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS10	CA [auth J]	103	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7R5 (Escherichia coli (strain K12)) Explore P0A7R5  Go to UniProtKB:  P0A7R5

Entity ID: 30
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS13	DA [auth M]	118	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7S9 (Escherichia coli (strain K12)) Explore P0A7S9  Go to UniProtKB:  P0A7S9

Entity ID: 31
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS15	EA [auth O]	89	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0ADZ4 (Escherichia coli (strain K12)) Explore P0ADZ4  Go to UniProtKB:  P0ADZ4

Entity ID: 32
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein bS16	FA [auth P]	82	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7T3 (Escherichia coli (strain K12)) Explore P0A7T3  Go to UniProtKB:  P0A7T3

Entity ID: 33
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS17	GA [auth Q]	84	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0AG63 (Escherichia coli (strain K12)) Explore P0AG63  Go to UniProtKB:  P0AG63

Entity ID: 34
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein bS18	HA [auth R]	75	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7T7 (Escherichia coli (strain K12)) Explore P0A7T7  Go to UniProtKB:  P0A7T7

Entity ID: 35
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein uS19	IA [auth S]	92	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7U3 (Escherichia coli (strain K12)) Explore P0A7U3  Go to UniProtKB:  P0A7U3

Entity ID: 36
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein bS20	JA [auth T]	87	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7U7 (Escherichia coli (strain K12)) Explore P0A7U7  Go to UniProtKB:  P0A7U7

Entity ID: 37
Molecule	Chains	Sequence Length	Organism	Details	Image
Small ribosomal subunit protein bS21	KA [auth U]	71	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P68679 (Escherichia coli (strain K12)) Explore P68679  Go to UniProtKB:  P68679

Entity ID: 39
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL4	MA [auth e]	201	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P60723 (Escherichia coli (strain K12)) Explore P60723  Go to UniProtKB:  P60723

Entity ID: 40
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL5	NA [auth f]	179	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P62399 (Escherichia coli (strain K12)) Explore P62399  Go to UniProtKB:  P62399

Entity ID: 41
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL6	OA [auth g]	177	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0AG55 (Escherichia coli (strain K12)) Explore P0AG55  Go to UniProtKB:  P0AG55

Entity ID: 42
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL9	PA [auth h]	149	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7R1 (Escherichia coli (strain K12)) Explore P0A7R1  Go to UniProtKB:  P0A7R1

Entity ID: 43
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL13	QA [auth i]	142	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0AA10 (Escherichia coli (strain K12)) Explore P0AA10  Go to UniProtKB:  P0AA10

Entity ID: 44
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL14	RA [auth j]	123	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0ADY3 (Escherichia coli (strain K12)) Explore P0ADY3  Go to UniProtKB:  P0ADY3

Entity ID: 45
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL18	SA [auth n]	117	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0C018 (Escherichia coli (strain K12)) Explore P0C018  Go to UniProtKB:  P0C018

Entity ID: 46
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL19	TA [auth o]	115	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7K6 (Escherichia coli (strain K12)) Explore P0A7K6  Go to UniProtKB:  P0A7K6

Entity ID: 47
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL20	UA [auth p]	118	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7L3 (Escherichia coli (strain K12)) Explore P0A7L3  Go to UniProtKB:  P0A7L3

Entity ID: 48
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL21	VA [auth q]	103	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0AG48 (Escherichia coli (strain K12)) Explore P0AG48  Go to UniProtKB:  P0AG48

Entity ID: 49
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL23	WA [auth s]	100	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0ADZ0 (Escherichia coli (strain K12)) Explore P0ADZ0  Go to UniProtKB:  P0ADZ0

Entity ID: 50
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL24	XA [auth t]	104	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P60624 (Escherichia coli (strain K12)) Explore P60624  Go to UniProtKB:  P60624

Entity ID: 51
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL25	YA [auth u]	94	Escherichia coli	Mutation(s): 0  Gene Names: rplY, b2185, JW2173
UniProt
Find proteins for P68919 (Escherichia coli (strain K12)) Explore P68919  Go to UniProtKB:  P68919

Entity ID: 52
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL27	ZA [auth v]	85	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7L8 (Escherichia coli (strain K12)) Explore P0A7L8  Go to UniProtKB:  P0A7L8

Entity ID: 53
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein bL28	AB [auth w]	78	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7M2 (Escherichia coli (strain K12)) Explore P0A7M2  Go to UniProtKB:  P0A7M2

Entity ID: 54
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL29	BB [auth x]	63	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A7M6 (Escherichia coli (strain K12)) Explore P0A7M6  Go to UniProtKB:  P0A7M6

Entity ID: 55
Molecule	Chains	Sequence Length	Organism	Details	Image
Large ribosomal subunit protein uL30	CB [auth y]	59	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0AG51 (Escherichia coli (strain K12)) Explore P0AG51  Go to UniProtKB:  P0AG51

Entity ID: 6
Molecule	Chains	Length	Organism	Image
5S rRNA	F [auth b]	120	Escherichia coli

Entity ID: 14
Molecule	Chains	Length	Organism	Image
16S rRNA	N [auth A]	1,544	Escherichia coli

Entity ID: 15
Molecule	Chains	Length	Organism	Image
A/P-site Val-tRNA^Val	O [auth Y]	76	Escherichia coli

Entity ID: 16
Molecule	Chains	Length	Organism	Image
P/E-site tRNA^fMet	P [auth Z]	78	Escherichia coli

Entity ID: 17
Molecule	Chains	Length	Organism	Image
23S rRNA	Q [auth a]	2,904	Escherichia coli

Entity ID: 38
Molecule	Chains	Length	Organism	Image
mRNA	LA [auth X]	10	Escherichia coli

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SCM	OB [auth A]	SPECTINOMYCIN C14 H24 N2 O7 UNFWWIHTNXNPBV-WXKVUWSESA-N
VAL	TD [auth Y]	VALINE C5 H11 N O2 KZSNJWFQEVHDMF-BYPYZUCNSA-N
ZN	DB [auth 3], EB [auth 4]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
K	AF [auth a], AN [auth a], AO [auth a], BF [auth a], BN [auth a], BO [auth a], CF [auth a], CN [auth a], CO [auth a], DF [auth a], DN [auth a], DO [auth a], EF [auth a], EN [auth a], EO [auth a], FN [auth a], GN [auth a], HN [auth a], IN [auth a], JB [auth c], JN [auth a], KN [auth a], LD [auth A], LE [auth a], LN [auth a], MD [auth A], ME [auth a], MN [auth a], ND [auth A], NE [auth a], NN [auth a], OD [auth A], OE [auth a], ON [auth a], PD [auth A], PE [auth a], PN [auth a], QD [auth A], QE [auth a], QN [auth a], RD [auth A], RE [auth a], RN [auth a], SE [auth a], SN [auth a], TE [auth a], TN [auth a], UD [auth a], UE [auth a], UN [auth a], VD [auth a], VE [auth a], VN [auth a], WD [auth a], WE [auth a], WN [auth a], XE [auth a], XN [auth a], YD [auth a], YE [auth a], YN [auth a], ZB [auth A], ZE [auth a], ZM [auth a], ZN [auth a]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N
MG	AC [auth A], AD [auth A], AE [auth a], AG [auth a], AH [auth a], AI [auth a], AJ [auth a], AK [auth a], AL [auth a], AM [auth a], BC [auth A], BD [auth A], BE [auth a], BG [auth a], BH [auth a], BI [auth a], BJ [auth a], BK [auth a], BL [auth a], BM [auth a], CC [auth A], CD [auth A], CE [auth a], CG [auth a], CH [auth a], CI [auth a], CJ [auth a], CK [auth a], CL [auth a], CM [auth a], DC [auth A], DD [auth A], DE [auth a], DG [auth a], DH [auth a], DI [auth a], DJ [auth a], DK [auth a], DL [auth a], DM [auth a], EC [auth A], ED [auth A], EE [auth a], EG [auth a], EH [auth a], EI [auth a], EJ [auth a], EK [auth a], EL [auth a], EM [auth a], FB [auth b], FC [auth A], FD [auth A], FE [auth a], FF [auth a], FG [auth a], FH [auth a], FI [auth a], FJ [auth a], FK [auth a], FL [auth a], FM [auth a], FO [auth a], GB [auth b], GC [auth A], GD [auth A], GE [auth a], GF [auth a], GG [auth a], GH [auth a], GI [auth a], GJ [auth a], GK [auth a], GL [auth a], GM [auth a], GO [auth a], HB [auth b], HC [auth A], HD [auth A], HE [auth a], HF [auth a], HG [auth a], HH [auth a], HI [auth a], HJ [auth a], HK [auth a], HL [auth a], HM [auth a], HO [auth p], IB [auth b], IC [auth A], ID [auth A], IE [auth a], IF [auth a], IG [auth a], IH [auth a], II [auth a], IJ [auth a], IK [auth a], IL [auth a], IM [auth a], JC [auth A], JD [auth A], JE [auth a], JF [auth a], JG [auth a], JH [auth a], JI [auth a], JJ [auth a], JK [auth a], JL [auth a], JM [auth a], KB [auth c], KC [auth A], KD [auth A], KE [auth a], KF [auth a], KG [auth a], KH [auth a], KI [auth a], KJ [auth a], KK [auth a], KL [auth a], KM [auth a], LB [auth d], LC [auth A], LF [auth a], LG [auth a], LH [auth a], LI [auth a], LJ [auth a], LK [auth a], LL [auth a], LM [auth a], MB [auth z], MC [auth A], MF [auth a], MG [auth a], MH [auth a], MI [auth a], MJ [auth a], MK [auth a], ML [auth a], MM [auth a], NB [auth A], NC [auth A], NF [auth a], NG [auth a], NH [auth a], NI [auth a], NJ [auth a], NK [auth a], NL [auth a], NM [auth a], OC [auth A], OF [auth a], OG [auth a], OH [auth a], OI [auth a], OJ [auth a], OK [auth a], OL [auth a], OM [auth a], PB [auth A], PC [auth A], PF [auth a], PG [auth a], PH [auth a], PI [auth a], PJ [auth a], PK [auth a], PL [auth a], PM [auth a], QB [auth A], QC [auth A], QF [auth a], QG [auth a], QH [auth a], QI [auth a], QJ [auth a], QK [auth a], QL [auth a], QM [auth a], RB [auth A], RC [auth A], RF [auth a], RG [auth a], RH [auth a], RI [auth a], RJ [auth a], RK [auth a], RL [auth a], RM [auth a], SB [auth A], SC [auth A], SD [auth A], SF [auth a], SG [auth a], SH [auth a], SI [auth a], SJ [auth a], SK [auth a], SL [auth a], SM [auth a], TB [auth A], TC [auth A], TF [auth a], TG [auth a], TH [auth a], TI [auth a], TJ [auth a], TK [auth a], TL [auth a], TM [auth a], UB [auth A], UC [auth A], UF [auth a], UG [auth a], UH [auth a], UI [auth a], UJ [auth a], UK [auth a], UL [auth a], UM [auth a], VB [auth A], VC [auth A], VF [auth a], VG [auth a], VH [auth a], VI [auth a], VJ [auth a], VK [auth a], VL [auth a], VM [auth a], WB [auth A], WC [auth A], WF [auth a], WG [auth a], WH [auth a], WI [auth a], WJ [auth a], WK [auth a], WL [auth a], WM [auth a], XB [auth A], XC [auth A], XD [auth a], XF [auth a], XG [auth a], XH [auth a], XI [auth a], XJ [auth a], XK [auth a], XL [auth a], XM [auth a], YB [auth A], YC [auth A], YF [auth a], YG [auth a], YH [auth a], YI [auth a], YJ [auth a], YK [auth a], YL [auth a], YM [auth a], ZC [auth A], ZD [auth a], ZF [auth a], ZG [auth a], ZH [auth a], ZI [auth a], ZJ [auth a], ZK [auth a], ZL [auth a]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Modified Residues  4 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
D2T	D [auth L]	L-PEPTIDE LINKING	C5 H9 N O4 S		ASP
MEQ	H [auth d]	L-PEPTIDE LINKING	C6 H12 N2 O3		GLN
4D4	J [auth l]	L-PEPTIDE LINKING	C6 H14 N4 O3		ARG
MS6	J [auth l]	L-PEPTIDE LINKING	C5 H11 N O S2		MET

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.06 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	REFMAC	5.8.0430
RECONSTRUCTION	cryoSPARC	4.6.2

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-05-20 
Deposition Author(s): Steinmetzger, C., Riad, M., Petzold, K.

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Funding Organization	Location	Grant Number
European Molecular Biology Organization (EMBO)	European Union	ALTF 1011-2020
H2020 Marie Curie Actions of the European Commission	European Union	747446
The Swedish Foundation for Strategic Research	Sweden	ICA14-0023
Swedish Research Council	Sweden	2014-04303
Swedish Research Council	Sweden	2018-00250
Ake Wiberg Foundation	European Union	467080968
Ake Wiberg Foundation	European Union	M14-0109
Other private	Sweden	JS20140009
Carl Trygger Foundation	Sweden	CTS14-383
Carl Trygger Foundation	Sweden	CTS15-383
Other private	Sweden	M91/14

Revision History  

• Version 1.0: 2026-05-20
  Type: Initial release