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6IFN

Crystal structure of Type III-A CRISPR Csm complex

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Type III-A CRISPR-associated protein Csm1polymer75886977.71UniProt (A0A2U2M0F3)Streptococcus thermophilus ND03
2B, D, G
(F, E, G)
Type III-A CRISPR-associated RAMP protein Csm3polymer22024585.83UniProt (A0A2U2M035)Streptococcus thermophilus ND03
3C
(B)
Type III-A CRISPR-associated RAMP protein Csm4polymer29933829.01UniProt (A0A2U2M037)Streptococcus thermophilus ND03
4E, F
(C, D)
Type III-A CRISPR-associated protein Csm2polymer12614848.12UniProt (A0A2U2M049)Streptococcus thermophilus ND03
5H
(H)
Type III-A CRISPR-associated RAMP protein Csm5polymer35741102.11UniProt (A0A2U2M038)Streptococcus thermophilus ND03
6I
(N)
RNA (32-MER)polymer4012638.51Streptococcus thermophilus ND03
7J
(A)
ZINC IONnon-polymer65.41Chemie (ZN)
8K
(A)
MANGANESE (II) IONnon-polymer54.91Chemie (MN)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains9
Total formula weight278001.1
Non-Polymers*Number of molecules2
Total formula weight120.3
All*Total formula weight278121.5
*Water molecules are not included.

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PDB entries from 2025-07-23

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