3D9P

Snapshots of the RNA processing factor SCAF8 bound to different phosphorylated forms of the Carboxy-Terminal Domain of RNA-Polymerase II

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)	RNA-binding protein 16	polymer	145	16884.6	2	UniProt (Q9UPN6) Pfam (PF04818)	Homo sapiens (man)	RNA-binding motif protein 16
2	C, D (Y, Z)	CTD-PEPTIDE	polymer	14	1777.4	2	Pfam (PF05001) UniProt (by SIFTS) (P24928)
3	E, F, G, H, I... (A, B)	SULFATE ION	non-polymer		96.1	10	Chemie (SO4)
4	O, P, Q, R (A, B, Y, Z)	water	water		18.0	172	Chemie (HOH)

Sequence modifications

A, B: 1 - 136 (UniProt: Q9UPN6)

PDB	External Database	Details
Thr 112	Arg 112	engineered mutation
Ala 137	-	expression tag
Leu 138	-	expression tag
Glu 139	-	expression tag
His 140	-	expression tag
His 141	-	expression tag
His 142	-	expression tag
His 143	-	expression tag
His 144	-	expression tag
His 145	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	37323.9
Non-Polymers*	Number of molecules	10
	Total formula weight	960.6
All*	Total formula weight	38284.6

*Water molecules are not included.