8R5A image
Entry Detail
PDB ID:
8R5A
EMDB ID:
EMD-18905
Keywords:
VIRUS LIKE PARTICLE
Title:
Structure of the Co(II) triggered TRAP (S33HK35H) protein cage (dextro form)
Biological Source:
Source Organism:
Geobacillus stearothermophilus
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2023-11-16
Release Date:
2024-12-25
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
2.84 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
8R5A validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Transcription attenuation protein MtrB
Mutations:S33H,K35H
Chain IDs:A, B (auth: L), C (auth: M), D (auth: N), E (auth: O), F (auth: P), G (auth: Q), H (auth: R), I (auth: S), J (auth: T), K (auth: U), L (auth: V), M (auth: W), N (auth: Y), O (auth: Z), P (auth: a), Q (auth: b), R (auth: c), S (auth: d), T (auth: e), U (auth: f), V (auth: g), W (auth: h), X (auth: i), Y (auth: B), Z (auth: j), AA (auth: k), BA (auth: l), CA (auth: m), DA (auth: n), EA (auth: o), FA (auth: p), GA (auth: q), HA (auth: r), IA (auth: s), JA (auth: t), KA (auth: u), LA (auth: v), MA (auth: w), NA (auth: x), OA (auth: y), PA (auth: z), QA (auth: 0), RA (auth: 1), SA (auth: 2), TA (auth: 3), UA (auth: 4), VA (auth: 5), WA (auth: C), XA (auth: 6), YA (auth: 7), ZA (auth: 8), AB (auth: 9), BB (auth: AA), CB (auth: BA), DB (auth: CA), EB (auth: DA), FB (auth: EA), GB (auth: FA), HB (auth: GA), IB (auth: HA), JB (auth: IA), KB (auth: JA), LB (auth: KA), MB (auth: LA), NB (auth: MA), OB (auth: NA), PB (auth: OA), QB (auth: PA), RB (auth: QA), SB (auth: RA), TB (auth: SA), UB (auth: D), VB (auth: TA), WB (auth: UA), XB (auth: VA), YB (auth: WA), ZB (auth: XA), AC (auth: YA), BC (auth: ZA), CC (auth: aA), DC (auth: bA), EC (auth: cA), FC (auth: dA), GC (auth: eA), HC (auth: fA), IC (auth: gA), JC (auth: hA), KC (auth: iA), LC (auth: jA), MC (auth: kA), NC (auth: lA), OC (auth: mA), PC (auth: nA), QC (auth: oA), RC (auth: pA), SC (auth: E), TC (auth: qA), UC (auth: rA), VC (auth: sA), WC (auth: tA), XC (auth: uA), YC (auth: vA), ZC (auth: wA), AD (auth: xA), BD (auth: yA), CD (auth: zA), DD (auth: 0A), ED (auth: 1A), FD (auth: 2A), GD (auth: 3A), HD (auth: 4A), ID (auth: 5A), JD (auth: 6A), KD (auth: 7A), LD (auth: 8A), MD (auth: 9A), ND (auth: AB), OD (auth: BB), PD (auth: CB), QD (auth: F), RD (auth: DB), SD (auth: EB), TD (auth: FB), UD (auth: GB), VD (auth: HB), WD (auth: IB), XD (auth: JB), YD (auth: KB), ZD (auth: LB), AE (auth: MB), BE (auth: NB), CE (auth: OB), DE (auth: PB), EE (auth: QB), FE (auth: RB), GE (auth: SB), HE (auth: TB), IE (auth: UB), JE (auth: VB), KE (auth: WB), LE (auth: XB), ME (auth: YB), NE (auth: ZB), OE (auth: G), PE (auth: aB), QE (auth: bB), RE (auth: cB), SE (auth: dB), TE (auth: eB), UE (auth: fB), VE (auth: gB), WE (auth: hB), XE (auth: iB), YE (auth: jB), ZE (auth: kB), AF (auth: lB), BF (auth: mB), CF (auth: nB), DF (auth: oB), EF (auth: pB), FF (auth: qB), GF (auth: rB), HF (auth: sB), IF (auth: tB), JF (auth: uB), KF (auth: vB), LF (auth: wB), MF (auth: H), NF (auth: xB), OF (auth: yB), PF (auth: zB), QF (auth: 0B), RF (auth: 1B), SF (auth: 2B), TF (auth: 3B), UF (auth: 4B), VF (auth: 5B), WF (auth: 6B), XF (auth: 7B), YF (auth: 8B), ZF (auth: 9B), AG (auth: AC), BG (auth: BC), CG (auth: CC), DG (auth: DC), EG (auth: EC), FG (auth: FC), GG (auth: GC), HG (auth: HC), IG (auth: IC), JG (auth: JC), KG (auth: I), LG (auth: KC), MG (auth: LC), NG (auth: MC), OG (auth: NC), PG (auth: OC), QG (auth: PC), RG (auth: QC), SG (auth: RC), TG (auth: SC), UG (auth: TC), VG (auth: UC), WG (auth: VC), XG (auth: WC), YG (auth: XC), ZG (auth: YC), AH (auth: ZC), BH (auth: aC), CH (auth: bC), DH (auth: cC), EH (auth: dC), FH (auth: eC), GH (auth: fC), HH (auth: gC), IH (auth: J), JH (auth: hC), KH (auth: iC), LH (auth: jC), MH (auth: kC), NH (auth: lC), OH (auth: mC), PH (auth: nC), QH (auth: oC), RH (auth: pC), SH (auth: qC), TH (auth: rC), UH (auth: sC), VH (auth: tC), WH (auth: uC), XH (auth: vC), YH (auth: wC), ZH (auth: xC), AI (auth: yC), BI (auth: zC), CI (auth: 0C), DI (auth: 1C), EI (auth: 2C), FI (auth: 3C), GI (auth: K), HI (auth: 4C), II (auth: 5C), JI (auth: 6C), KI (auth: 7C), LI (auth: 8C), MI (auth: 9C), NI (auth: AD), OI (auth: BD), PI (auth: CD), QI (auth: DD), RI (auth: ED), SI (auth: FD), TI (auth: GD), UI (auth: HD), VI (auth: ID), WI (auth: JD), XI (auth: KD), YI (auth: LD), ZI (auth: MD), AJ (auth: ND), BJ (auth: OD), CJ (auth: PD), DJ (auth: QD)
Chain Length:74
Number of Molecules:264
Biological Source:Geobacillus stearothermophilus
UniProt ID:Q9X6J6 Pfam ID:PF02081
Ligand Molecules
CO
Primary Citation
Designed, Programmable Protein Cages Utilizing Diverse Metal Coordination Geometries Show Reversible, pH-Dependent Assembly.
Macromol Rapid Commun 46 e2400712 e2400712 (2025)
PMID: 39676522 DOI: 10.1002/marc.202400712

Abstact

The rational design and production of a novel series of engineered protein cages are presented, which have emerged as versatile and adaptable platforms with significant applications in biomedicine. These protein cages are assembled from multiple protein subunits, and precise control over their interactions is crucial for regulating assembly and disassembly, such as the on-demand release of encapsulated therapeutic agents. This approach employs a homo-undecameric, ring-shaped protein scaffold with strategically positioned metal binding sites. These engineered proteins can self-assemble into highly stable cages in the presence of cobalt or zinc ions. Furthermore, the cages can be disassembled on demand by employing external triggers such as chelating agents and changes in pH. Interestingly, for certain triggers, the disassembly process is reversible, allowing the cages to reassemble upon reversal or outcompeting of triggering conditions/agents. This work offers a promising platform for the development of advanced drug delivery systems and other biomedical applications.

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Primary Citation of related structures
8R5A