2FFF

Open Form of a Class A Transpeptidase Domain

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	penicillin-binding protein 1B	polymer	15	1568.7	1	UniProt (Q4TUQ1) In PDB	Streptococcus pneumoniae
2	B	penicillin-binding protein 1B	polymer	453	49873.3	1	UniProt (O70038) Pfam (PF00905) In PDB	Streptococcus pneumoniae
3	B	NICKEL (II) ION	non-polymer		58.7	1	Chemie (NI)
4		water	water		18.0	232	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	51442.1
Non-Polymers*	Number of molecules	1
	Total formula weight	58.7
All*	Total formula weight	51500.8

*Water molecules are not included.