4N9P

Crystal structure of Staphylococcal nuclease variant Delta+PHS V23T/L25A/V99T at cryogenic temperature

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Thermonuclease	polymer	143	16105.3	1	UniProt (P00644) Pfam (PF00565) In PDB	Staphylococcus aureus	TNase, Micrococcal nuclease, Staphylococcal nuclease
2	A	CALCIUM ION	non-polymer		40.1	1	Chemie (CA)
3	A	THYMIDINE-3',5'-DIPHOSPHATE	non-polymer		402.2	1	Chemie (THP)
4		water	water		18.0	154	Chemie (HOH)

Sequence modifications

A: 1 - 149 (UniProt: P00644)

PDB	External Database	Details
Thr 23	Val 105	engineered mutation
Ala 25	Leu 107	engineered mutation
-	Thr 126	deletion
-	Lys 127	deletion
-	His 128	deletion
-	Pro 129	deletion
-	Lys 130	deletion
-	Lys 131	deletion
Phe 50	Gly 132	engineered mutation
Asn 51	Val 133	engineered mutation
Thr 99	Val 181	engineered mutation
Gly 117	Pro 199	engineered mutation
Leu 124	His 206	engineered mutation
Ala 128	Ser 210	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	16105.3
Non-Polymers*	Number of molecules	2
	Total formula weight	442.3
All*	Total formula weight	16547.6

*Water molecules are not included.