1X9S

T7 DNA polymerase in complex with a primer/template DNA containing a disordered N-2 aminofluorene on the template, crystallized with dideoxy-CTP as the incoming nucleotide.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	P	5'-D(*GP*GP*AP*GP*AP*GP*TP*GP*AP*TP*T*GP*GP*TP*AP*GP*TP*GP*TP*GP*AP*(2DT))-3'	polymer	22	6926.5	1
2	T	5'-D(*CP*CP*CP*(AFG)P*AP*TP*CP*AP*CP*AP*CP*TP*AP*CP*CP*AP*AP*TP*CP*AP*CP*TP*CP*TP*CP*C)-3'	polymer	26	7936.2	1
3	A	DNA polymerase	polymer	698	79089.8	1	UniProt (P00581) Pfam (PF00476) In PDB	Enterobacteria phage T7	T7 DNA polymerase
4	B	Thioredoxin 1	polymer	108	11687.4	1	UniProt (P0AA25) Pfam (PF00085) In PDB	Escherichia coli	TRX1, TRX
5	A	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
6		water	water		18.0	51	Chemie (HOH)

Sequence modifications

A: 1 - 704 (UniProt: P00581)

PDB	External Database	Details
-	Lys 118	deletion
-	Arg 119	deletion
-	Phe 120	deletion
-	Gly 121	deletion
-	Ser 122	deletion
-	His 123	deletion

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	105639.9
Non-Polymers*	Number of molecules	1
	Total formula weight	24.3
All*	Total formula weight	105664.2

*Water molecules are not included.