3SV4

Crystal structure of the large fragment of DNA polymerase I from Thermus Aquaticus in an open binary complex with dT as templating nucleobase

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	DNA polymerase I, thermostable	polymer	540	60937.0	1	UniProt (P19821) Pfam (PF09281) Pfam (PF00476) In PDB	Thermus aquaticus	Taq polymerase 1
2	B	(5'-D(*GP*AP*CP*CP*AP*CP*GP*GP*CP*GP*CP*(DOC))-3')	polymer	12	3617.4	1
3	C	(5'-D(*AP*AP*AP*TP*GP*GP*CP*GP*CP*CP*GP*TP*GP*GP*TP*C)-3')	polymer	16	4939.2	1
4	A, B	FORMIC ACID	non-polymer		46.0	9	Chemie (FMT)
5	A, B, C	MAGNESIUM ION	non-polymer		24.3	3	Chemie (MG)
6		water	water		18.0	320	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	69493.5
Non-Polymers*	Number of molecules	12
	Total formula weight	487.1
All*	Total formula weight	69980.7

*Water molecules are not included.