1ZBX

Crystal structure of a Orc1p-Sir1p complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Origin recognition complex subunit 1	polymer	219	25572.1	1	UniProt (P54784) Pfam (PF01426)	Saccharomyces cerevisiae (baker's yeast)	Origin recognition complex protein 120 kDa subunit
2	B (B)	Regulatory protein SIR1	polymer	140	16641.3	1	UniProt (P21691) Pfam (PF11603)	Saccharomyces cerevisiae (baker's yeast)	Silent information regulator 1
3	C, D (A, B)	water	water		18.0	164	Chemie (HOH)

Sequence modifications

B: 480 - 614 (UniProt: P21691)

PDB	External Database	Details
Leu 613	Ile 613	cloning artifact
Glu 614	Ile 614	cloning artifact
His 615	-	expression tag
His 616	-	expression tag
His 617	-	expression tag
His 618	-	expression tag
His 619	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	42213.4
All*	Total formula weight	42213.4

*Water molecules are not included.