2ATQ

RB69 single-stranded DNA binding protein-DNA polymerase fusion

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	polymer	903	104655.1	1	UniProt (Q38087) Pfam (PF03104) Pfam (PF00136) In PDB	Enterobacteria phage RB69	Gp43
2	B	gp32	polymer	234	26228.5	1	UniProt (Q7Y265) Pfam (PF08804) In PDB	Enterobacteria phage RB69
3	A	GUANOSINE-5'-DIPHOSPHATE	non-polymer		443.2	1	Chemie (GDP)
4	B	ZINC ION	non-polymer		65.4	1	Chemie (ZN)

Sequence modifications

A: 1 - 903 (UniProt: Q38087)

PDB	External Database	Details
Ala 222	Asp 222	engineered mutation
Ala 327	Asp 327	engineered mutation

B: 21 - 253 (UniProt: Q7Y265)

PDB	External Database	Details
Met 20	-	initiating methionine

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	130883.7
Non-Polymers*	Number of molecules	2
	Total formula weight	508.6
All*	Total formula weight	131392.3

*Water molecules are not included.