3syl

Crystal structure of the AAA+ protein CbbX, native structureCrystal structure of the AAA+ protein CbbX, native structure

Structural highlights

3syl is a 2 chain structure with sequence from Cereibacter sphaeroides. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 3Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CBBX_CERSP ATPase involved in the activation of red-type RuBisCo (ribulose-1,5-bisphosphate carboxylase/oxygenase), which tends to form inactive complexes with its substrate ribulose 1,5-bisphosphate (RuBP) (PubMed:27872295, PubMed:22048315). Catalyzes the release of RuBP from inhibited RuBisCo in an ATP-dependent manner (PubMed:27872295, PubMed:22048315). Activation of RuBisCO involves the ATP-dependent carboxylation of the epsilon-amino group of lysine leading to a carbamate structure (PubMed:27872295, PubMed:22048315).^[1] ^[2]

References

↑ Mueller-Cajar O, Stotz M, Wendler P, Hartl FU, Bracher A, Hayer-Hartl M. Structure and function of the AAA+ protein CbbX, a red-type Rubisco activase. Nature. 2011 Nov 2;479(7372):194-9. doi: 10.1038/nature10568. PMID:22048315 doi:10.1038/nature10568
↑ Loganathan N, Tsai YC, Mueller-Cajar O. Characterization of the heterooligomeric red-type rubisco activase from red algae. Proc Natl Acad Sci U S A. 2016 Dec 6;113(49):14019-14024. PMID:27872295 doi:10.1073/pnas.1610758113

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OCA

[1] Mueller-Cajar O, Stotz M, Wendler P, Hartl FU, Bracher A, Hayer-Hartl M. Structure and function of the AAA+ protein CbbX, a red-type Rubisco activase. Nature. 2011 Nov 2;479(7372):194-9. doi: 10.1038/nature10568. PMID:22048315 doi:10.1038/nature10568

[2] Loganathan N, Tsai YC, Mueller-Cajar O. Characterization of the heterooligomeric red-type rubisco activase from red algae. Proc Natl Acad Sci U S A. 2016 Dec 6;113(49):14019-14024. PMID:27872295 doi:10.1073/pnas.1610758113

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