1TTO

Crystal structure of the Rnase T1 variant R2

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	RNase T1	polymer	104	11106.7	3	UniProt (P00651) Pfam (PF00545) In PDB	Aspergillus oryzae
2	A, B, C	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		122.1	3	Chemie (TRS)
3		water	water		18.0	340	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
Tyr 59	Trp 59	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	33320.1
Non-Polymers*	Number of molecules	3
	Total formula weight	366.4
All*	Total formula weight	33686.6

*Water molecules are not included.