6IFZ

Type III-A Csm complex, Cryo-EM structure of Csm-CTR2-ssDNA complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Type III-A CRISPR-associated protein Csm1	polymer	758	86910.6	1	UniProt (A0A2U2M0F3) In PDB	Streptococcus thermophilus ND03
2	D, C	Type III-A CRISPR-associated protein Csm2	polymer	126	14848.1	2	UniProt (A0A2U2M049) In PDB	Streptococcus thermophilus ND03
3	G, F, E	Type III-A CRISPR-associated RAMP protein Csm3	polymer	220	24584.9	3	UniProt (A0A2U2M035) In PDB	Streptococcus thermophilus ND03
4	B	Type III-A CRISPR-associated RAMP protein Csm4	polymer	299	33829.0	1	UniProt (A0A2U2M037) In PDB	Streptococcus thermophilus ND03
5	H	Type III-A CRISPR-associated RAMP protein Csm5	polymer	357	41102.1	1	UniProt (A0A2U2M038) In PDB	Streptococcus thermophilus ND03
6	I	crRNA	polymer	36	11392.8	1		Streptococcus thermophilus ND03
7	J	CTR2	polymer	50	16274.7	1		Streptococcus thermophilus ND03
8	A	ZINC ION	non-polymer		65.4	1	Chemie (ZN)

Sequence modifications

A: 1 - 758 (UniProt: A0A2U2M0F3)

PDB	External Database	Details
Ala 15	His 15	engineered mutation

G, F, E: 1 - 220 (UniProt: A0A2U2M035)

PDB	External Database	Details
Asn 33	Asp 33	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	10
	Total formula weight	292960.1
Non-Polymers*	Number of molecules	1
	Total formula weight	65.4
All*	Total formula weight	293025.5

*Water molecules are not included.