4K96: Binary Complex of cGAS with Bound dsDNA

Structure of Binary Complex of cGAS with Bound dsDNA. Determined by X-ray diffraction at 2.08 Å resolution. Released 15 May 2013.

Method
X-ray diffraction
Resolution
2.08 Å
Organism
Mus musculus
Chains
6
Atoms
7,981
Mol. weight
105.98 kDa
Ligands
ZN
Released
15 May 2013

Explore 4K96 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

4K96 contains 39 α-helices and 28 β-strands across 2 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 20 helices, 14 β-strands

ElementResiduesLengthSheet
α-helix150-1578
α-helix159-1602
α-helix161-18121
β-strand193-19751
α-helix200-2023
β-strand211-21991
β-strand223-22751
β-strand234-23961
α-helix249-2513
β-strand252-25321
β-strand256-25721
α-helix2581
α-helix259-27416
β-strand281-28441
α-helix285-2884
β-strand293-29971
β-strand303-314121
α-helix317-3193
α-helix320-3223
α-helix334-3407
β-strand345-34951
β-strand363-36641
α-helix368-3769
β-strand38112
α-helix394-41118
α-helix413-4153
α-helix420-43314
α-helix437-4404
α-helix442-4443
α-helix445-46117
β-strand46613
β-strand47413
α-helix483-49816
α-helix502-5043
Chain B: 19 helices, 14 β-strands
ElementResiduesLengthSheet
α-helix147-15711
α-helix159-1602
α-helix161-18222
β-strand193-19754
α-helix199-2024
β-strand211-21994
β-strand223-22754
β-strand234-23964
α-helix249-2513
β-strand252-25324
β-strand256-25724
α-helix259-27416
β-strand281-28444
α-helix285-2873
β-strand293-29974
β-strand303-314124
α-helix317-3193
α-helix320-3223
α-helix334-3407
β-strand345-34954
β-strand362-36654
α-helix368-3769
β-strand38112
α-helix394-41118
α-helix413-4153
α-helix420-43314
α-helix437-4404
α-helix442-4443
α-helix445-46117
β-strand46615
β-strand47415
α-helix483-49816
α-helix502-5043

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Cyclic GMP-AMP synthaseA, Bprotein362Mus musculusQ8C6L5 (AlphaFold model)
DNA-FE, GDNA17
DNA-RF, HDNA17
Sequence of entity 1 (A, B), FASTA
>4K96_1 Cyclic GMP-AMP synthase (chains A, B)
SPDKLKKVLDKLRLKRKDISEAAETVNKVVERLLRRMQKRESEFKGVEQLNTGSYYEHVK
ISAPNEFDVMFKLEVPRIELQEYYETGAFYLVKFKRIPRGNPLSHFLEGEVLSATKMLSK
FRKIIKEEVKEIKDIDVSVEKEKPGSPAVTLLIRNPEEISVDIILALESKGSWPISTKEG
LPIQGWLGTKVRTNLRREPFYLVPKNAKDGNSFQGETWRLSFSHTEKYILNNHGIEKTCC
ESSGAKCCRKECLKLMKYLLEQLKKEFQELDAFCSYHVKTAIFHMWTQDPQDSQWDPRNL
SSCFDKLLAFFLECLRTEKLDHYFIPKFNLFSQELIDRKSKEFLSKKIEYERNNGFPIFD
KL
Sequence of entity 2 (E, G), FASTA
>4K96_2 DNA-F (chains E, G)
AAATTGCCGAAGACGAA
Sequence of entity 3 (F, H), FASTA
>4K96_3 DNA-R (chains F, H)
TTTCGTCTTCGGCAATT

Ligands and cofactors

IDNameFormulaCopies
ZNZinc ionZn2

Primary citation

Cyclic [G(2',5')pA(3',5')p] is the metazoan second messenger produced by DNA-activated cyclic GMP-AMP synthase. Gao, P., Ascano, M., Wu, Y. et al. Cell (2013) 153:1094-1107. DOI 10.1016/j.cell.2013.04.046 · PubMed

Other PDB entries of the same protein (UniProt Q8C6L5 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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