3UPU

Crystal structure of the T4 Phage SF1B Helicase Dda

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C (A, B, C)	ATP-dependent DNA helicase dda	polymer	459	52495.7	3	UniProt (P32270) Pfam (PF13604) Pfam (PF18343) Pfam (PF13538)	Enterobacteria phage T4	SF1B Helicase Dda
2	D, E, F (D, E, F)	5'-D(*TP*TP*TP*TP*TP*TP*TP*T)-3'	polymer	8	2388.6	3
3	G, H, I, J, K (A, B, D, E, F)	water	water		18.0	10	Chemie (HOH)

Sequence modifications

A, B, C: 1 - 439 (UniProt: P32270)

PDB	External Database	Details
Mse -19	-	expression tag
Gly -18	-	expression tag
Ser -17	-	expression tag
Ser -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
Leu -6	-	expression tag
Val -5	-	expression tag
Pro -4	-	expression tag
Arg -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag
Ala 38	Lys 38	engineered mutation
Glu 54	Gly 54	SEE REMARK 999
Asp 151	Glu 151	SEE REMARK 999
Ile 196	Asn 196	SEE REMARK 999
Gly 357	Ala 357	SEE REMARK 999

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	164652.9
All*	Total formula weight	164652.9

*Water molecules are not included.