Structure analysis

Cryo-EM structure of the Type III-B Cmr-beta bound to cognate target RNA and AMPPnP, state 1

Electron Microscopy
2.41Å resolution
Source organism: Sulfolobus islandicus REY15A
Assembly composition:
hetero 35-mer (preferred)
Entry contents: 7 distinct polypeptide molecules
2 distinct RNA molecules

Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero 35-mer
Accessible surface area: 274184.36 Å2
Buried surface area: 124206.99 Å2
Dissociation area: 3,944.82 Å2
Dissociation energy (ΔGdiss): -13.68 kcal/mol
Dissociation entropy (TΔSdiss): 58.74 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-123246

Macromolecules

Chains: A, B, C
Length: 155 amino acids
Theoretical weight: 17.96 KDa
Source organism: Sulfolobus islandicus REY15A
UniProt:
  • Canonical: F0NDX5 (Residues: 1-155; Coverage: 100%)
Gene name: SiRe_0601
InterPro:

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Chains: D, E, F, G
Length: 286 amino acids
Theoretical weight: 32.32 KDa
Source organism: Sulfolobus islandicus REY15A
UniProt:
  • Canonical: F0NDX6 (Residues: 1-286; Coverage: 100%)
Gene name: SiRe_0602
Pfam: RAMP superfamily
InterPro:

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Chain: H
Length: 313 amino acids
Theoretical weight: 36.01 KDa
Source organism: Sulfolobus islandicus REY15A
UniProt:
  • Canonical: F0NDX1 (Residues: 1-313; Coverage: 100%)
Gene name: SiRe_0597
Pfam: CRISPR-associated protein (Cas_Cmr3)
InterPro:

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Chain: I
Length: 296 amino acids
Theoretical weight: 33.95 KDa
Source organism: Sulfolobus islandicus REY15A
Expression system: Sulfolobus islandicus REY15A
UniProt:
  • Canonical: F0NDX3 (Residues: 1-283; Coverage: 100%)
Gene name: SiRe_0599
Pfam: RAMP superfamily
InterPro:

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Chain: J
Length: 476 amino acids
Theoretical weight: 55.39 KDa
Source organism: Sulfolobus islandicus REY15A
UniProt:
  • Canonical: F0NDX4 (Residues: 1-471; Coverage: 100%)
Gene name: SiRe_0600
Pfam: RAMP superfamily
InterPro:

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Chains: L, M, N, O, P, Q, R, S, T, W, X, l, m, n, o, p, q, r, s, t, w, x
Length: 174 amino acids
Theoretical weight: 19.71 KDa
Source organism: Sulfolobus islandicus REY15A
UniProt:
  • Canonical: F0NDX7 (Residues: 1-174; Coverage: 100%)
Gene name: SiRe_0603
Pfam: CRISPR system CMR subunit Cmr7 1
InterPro: CRISPR system CMR subunit Cmr7 1

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Name: Cognate target RNA (46-mer)
Representative chains: U
Length: 46 nucleotides
Theoretical weight: 14.7 KDa

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Name: crRNA
Representative chains: V
Length: 51 nucleotides
Theoretical weight: 16.41 KDa

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