3OAK

Crystal structure of a Spn1 (Iws1)-Spt6 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)	Transcription factor IWS1	polymer	151	17045.7	2	UniProt (Q06505) Pfam (PF08711)	Saccharomyces cerevisiae (yeast)	Interacts with SPT6 protein 1, Suppresses postrecruitment functions protein 1
2	C, D (C, D)	Transcription elongation factor SPT6	polymer	31	3723.0	2	UniProt (P23615)	Saccharomyces cerevisiae (yeast)	Chromatin elongation factor SPT6
3	E, F, G, H (A, B, C, D)	water	water		18.0	268	Chemie (HOH)

Sequence modifications

A, B: 148 - 292 (UniProt: Q06505)

PDB	External Database	Details
Gly 142	-	expression tag
Ile 143	-	expression tag
Asp 144	-	expression tag
Pro 145	-	expression tag
Phe 146	-	expression tag
Thr 147	-	expression tag

C, D: 239 - 263 (UniProt: P23615)

PDB	External Database	Details
Asp 233	-	expression tag
Pro 234	-	expression tag
Phe 235	-	expression tag
Thr 236	-	expression tag
His 237	-	expression tag
Met 238	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	41537.3
All*	Total formula weight	41537.3

*Water molecules are not included.