4TPS

Sporulation Inhibitor of DNA Replication, SirA, in complex with Domain I of DnaA

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Sporulation inhibitor of replication protein SirA	polymer	154	18723.6	2	UniProt (P45707) Pfam (PF10747) In PDB	Bacillus subtilis	SirA
2	B, D	Chromosomal replication initiator protein DnaA	polymer	85	9744.1	2	UniProt (P05648) Pfam (PF11638) In PDB	Bacillus subtilis	Domain I of DnaA
3	A, C	BETA-MERCAPTOETHANOL	non-polymer		78.1	2	Chemie (BME)
4	A	ACETATE ION	non-polymer		59.0	1	Chemie (ACT)
5		water	water		18.0	295	Chemie (HOH)

Sequence modifications

A, C: 1 - 148 (UniProt: P45707)

PDB	External Database	Details
Met -5	-	expression tag
Gln -4	-	expression tag
Ala -3	-	expression tag
Gly -2	-	expression tag
Pro -1	-	expression tag
Ala 0	-	expression tag

B, D: 1 - 82 (UniProt: P05648)

PDB	External Database	Details
Gly -2	-	expression tag
Pro -1	-	expression tag
Ala 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	56935.3
Non-Polymers*	Number of molecules	3
	Total formula weight	215.3
All*	Total formula weight	57150.6

*Water molecules are not included.