6DPI

Crystal Structure of Bacillus Halodurans Ribonuclease H1 K196A in Complex with an RNA/DNA Hybrid: Reaction in 10 mM Mg2+ and 200 mM Rb+ 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	16272.4	1	UniProt (Q9KEI9) In PDB	Bacillus halodurans	RNase H
2	B	5'-R(*AP*CP*AP*U)-3' portion of intact 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 intact 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	RUBIDIUM ION	non-polymer		85.5	3	Chemie (RB)
7	A	CHLORIDE ION	non-polymer		35.5	3	Chemie (CL)
8	A	GLYCEROL	non-polymer		92.1	4	Chemie (GOL)
9	A, C	1,2-ETHANEDIOL	non-polymer		62.1	3	Chemie (EDO)
10		water	water		18.0	203	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
Ala 196	Lys 196	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	19926.8
Non-Polymers*	Number of molecules	15
	Total formula weight	966.0
All*	Total formula weight	20892.8

*Water molecules are not included.