1Q9E

RNase T1 variant with adenine specificity

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	Guanyl-specific ribonuclease T1 precursor	polymer	104	11129.7	3	UniProt (P00651) Pfam (PF00545) In PDB	Aspergillus oryzae	RNase T1
2	A, C	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		122.1	2	Chemie (TRS)
3		water	water		18.0	274	Chemie (HOH)

Sequence modifications

A, B, C: 1 - 104 (UniProt: P00651)

PDB	External Database	Details
Glu 41	Lys 41	engineered mutation
Phe 42	Tyr 42	engineered mutation
Arg 43	Asn 43	engineered mutation
Trp 45	Tyr 45	engineered mutation
Asn 46	Glu 46	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	33389.2
Non-Polymers*	Number of molecules	2
	Total formula weight	244.3
All*	Total formula weight	33633.5

*Water molecules are not included.