6EKC image
Deposition Date 2017-09-26
Release Date 2017-12-06
Last Version Date 2024-10-16
Entry Detail
PDB ID:
6EKC
Keywords:
CHAPERONE
Title:
Crystal structure of the BSD2 homolog of Arabidopsis thaliana bound to the octameric assembly of RbcL from Thermosynechococcus elongatus
Biological Source:
Source Organism:
Thermosynechococcus elongatus (strain BP-1) (Taxon ID: 197221)
Arabidopsis thaliana (Taxon ID: 3702)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.63 Å
R-Value Free:
0.27
R-Value Work:
0.23
R-Value Observed:
0.23
Space Group:
P 1
6EKC validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribulose bisphosphate carboxylase large chain
Gene (Uniprot):cbbL
Mutagens:F345I / P415A
Chain IDs:A (auth: A1), B (auth: A2), C (auth: A3), D (auth: A4), E (auth: A5), F (auth: A6), G (auth: A7), H (auth: A8), I (auth: C1), J (auth: C2), K (auth: C3), L (auth: C4), M (auth: C5), N (auth: C6), O (auth: C7), P (auth: C8), Q (auth: E1), R (auth: E2), S (auth: E3), T (auth: E4), U (auth: E5), V (auth: E6), W (auth: E7), X (auth: E8), Y (auth: G1), Z (auth: G2), AA (auth: G3), BA (auth: G4), CA (auth: G5), DA (auth: G6), EA (auth: G7), FA (auth: G8), GA (auth: I1), HA (auth: I2), IA (auth: I3), JA (auth: I4), KA (auth: I5), LA (auth: I6), MA (auth: I7), NA (auth: I8), OA (auth: K1), PA (auth: K2), QA (auth: K3), RA (auth: K4), SA (auth: K5), TA (auth: K6), UA (auth: K7), VA (auth: K8), WA (auth: M1), XA (auth: M2), YA (auth: M3), ZA (auth: M4), AB (auth: M5), BB (auth: M6), CB (auth: M7), DB (auth: M8), EB (auth: O1), FB (auth: O2), GB (auth: O3), HB (auth: O4), IB (auth: O5), JB (auth: O6), KB (auth: O7), LB (auth: O8), MB (auth: Q1), NB (auth: Q2), OB (auth: Q3), PB (auth: Q4), QB (auth: Q5), RB (auth: Q6), SB (auth: Q7), TB (auth: Q8), UB (auth: S1), VB (auth: S2), WB (auth: S3), XB (auth: S4), YB (auth: S5), ZB (auth: S6), AC (auth: S7), BC (auth: S8)
Chain Length:475
Number of Molecules:80
Biological Source:Thermosynechococcus elongatus (strain BP-1)
UniProt ID:Q8DIS5 Pfam ID:PF02788, PF00016
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DnaJ/Hsp40 cysteine-rich domain superfamily protein
Gene (Uniprot):BSD2
Mutagens:K56M
Chain IDs:CC (auth: B1), DC (auth: B2), EC (auth: B3), FC (auth: B4), GC (auth: B5), HC (auth: B6), IC (auth: B7), JC (auth: B8), KC (auth: D1), LC (auth: D2), MC (auth: D3), NC (auth: D4), OC (auth: D5), PC (auth: D6), QC (auth: D7), RC (auth: D8), SC (auth: F1), TC (auth: F2), UC (auth: F3), VC (auth: F4), WC (auth: F5), XC (auth: F6), YC (auth: F7), ZC (auth: F8), AD (auth: H1), BD (auth: H2), CD (auth: H3), DD (auth: H4), ED (auth: H5), FD (auth: H6), GD (auth: H7), HD (auth: H8), ID (auth: J1), JD (auth: J2), KD (auth: J3), LD (auth: J4), MD (auth: J5), ND (auth: J6), OD (auth: J7), PD (auth: J8), QD (auth: L1), RD (auth: L2), SD (auth: L3), TD (auth: L4), UD (auth: L5), VD (auth: L6), WD (auth: L7), XD (auth: L8), YD (auth: N1), ZD (auth: N2), AE (auth: N3), BE (auth: N4), CE (auth: N5), DE (auth: N6), EE (auth: N7), FE (auth: N8), GE (auth: P1), HE (auth: P2), IE (auth: P3), JE (auth: P4), KE (auth: P5), LE (auth: P6), ME (auth: P7), NE (auth: P8), OE (auth: R1), PE (auth: R2), QE (auth: R3), RE (auth: R4), SE (auth: R5), TE (auth: R6), UE (auth: R7), VE (auth: R8), WE (auth: T1), XE (auth: T2), YE (auth: T3), ZE (auth: T4), AF (auth: T5), BF (auth: T6), CF (auth: T7), DF (auth: T8)
Chain Length:81
Number of Molecules:80
Biological Source:Arabidopsis thaliana
UniProt ID:Q9SN73
Ligand Molecules
ZN
Primary Citation
Plant RuBisCo assembly in E. coli with five chloroplast chaperones including BSD2.
Science 358 1272 1278 (2017)
PMID: 29217567 DOI: 10.1126/science.aap9221

Abstact

Plant RuBisCo, a complex of eight large and eight small subunits, catalyzes the fixation of CO2 in photosynthesis. The low catalytic efficiency of RuBisCo provides strong motivation to reengineer the enzyme with the goal of increasing crop yields. However, genetic manipulation has been hampered by the failure to express plant RuBisCo in a bacterial host. We achieved the functional expression of Arabidopsis thaliana RuBisCo in Escherichia coli by coexpressing multiple chloroplast chaperones. These include the chaperonins Cpn60/Cpn20, RuBisCo accumulation factors 1 and 2, RbcX, and bundle-sheath defective-2 (BSD2). Our structural and functional analysis revealed the role of BSD2 in stabilizing an end-state assembly intermediate of eight RuBisCo large subunits until the small subunits become available. The ability to produce plant RuBisCo recombinantly will facilitate efforts to improve the enzyme through mutagenesis.

Legend

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Disease

Primary Citation of related structures
6EKC