6DP4

Crystal Structure of Bacillus Halodurans Ribonuclease H1 in Complex with an RNA/DNA Hybrid: Reaction in 20 mM Mg2+ and 75 mM K+ for 40 s at 21 C

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Ribonuclease H	polymer	142	16330.5	1	UniProt (Q9KEI9) In PDB	Bacillus halodurans	RNase H
2	B	5'-R(*AP*CP*AP*U)-3' portion of cleaved RNA 5'-R(*AP*CP*AP*UP*CP*G)-3'	polymer	4	1224.8	1		synthetic construct
3	b	5'-R(P*CP*G)-3' portion of cleaved RNA 5'-R(*AP*CP*AP*UP*CP*G)-3'	polymer	2	605.4	1		synthetic construct
4	C	DNA (5'-D(*CP*GP*AP*TP*GP*T)-3')	polymer	6	1824.2	1		synthetic construct
5	A	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
6	A, C	POTASSIUM ION	non-polymer		39.1	3	Chemie (K)
7	A	IODIDE ION	non-polymer		126.9	3	Chemie (IOD)
8	A	GLYCEROL	non-polymer		92.1	7	Chemie (GOL)
9		water	water		18.0	182	Chemie (HOH)

Sequence modifications

A: 59 - 196 (UniProt: Q9KEI9)

PDB	External Database	Details
Gly 55	-	expression tag
Ser 56	-	expression tag
His 57	-	expression tag
Met 58	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	19984.9
Non-Polymers*	Number of molecules	15
	Total formula weight	1191.3
All*	Total formula weight	21176.2

*Water molecules are not included.