1ICI

CRYSTAL STRUCTURE OF A SIR2 HOMOLOG-NAD COMPLEX

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	TRANSCRIPTIONAL REGULATORY PROTEIN, SIR2 FAMILY	polymer	256	28436.7	2	UniProt (O28597) Pfam (PF02146)	Archaeoglobus fulgidus
2	C, E (A, B)	ZINC ION	non-polymer		65.4	2	Chemie (ZN)
3	D, F (A, B)	NICOTINAMIDE-ADENINE-DINUCLEOTIDE	non-polymer		663.4	2	Chemie (NAD)
4	G, H (A, B)	water	water		18.0	261	Chemie (HOH)

Sequence modifications

A, B: 1 - 245 (UniProt: O28597)

PDB	External Database	Details
Gly -10	-	expression tag
Ser -9	-	expression tag
His -8	-	expression tag
His -7	-	expression tag
His -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	56873.4
Non-Polymers*	Number of molecules	4
	Total formula weight	1457.7
All*	Total formula weight	58331.1

*Water molecules are not included.