4QY6

Crystal structures of chimeric beta-lactamase cTEM-19m showing different conformations

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Beta-lactamase TEM, Beta-lactamase PSE-4	polymer	263	28827.8	1	UniProt (P62593) UniProt (P16897) Pfam (PF00144) Pfam (PF13354) In PDB	Escherichia coli
2	A	CHLORIDE ION	non-polymer		35.5	6	Chemie (CL)
3	A	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
4		water	water		18.0	470	Chemie (HOH)

Sequence modifications

A: 26 - 67 (UniProt: P62593)
A: 68 - 69 (UniProt: P16897)
A: 70 - 149 (UniProt: P62593)
A: 150 - 190 (UniProt: P16897)
A: 191 - 290 (UniProt: P62593)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	28827.8
Non-Polymers*	Number of molecules	10
	Total formula weight	309.9
All*	Total formula weight	29137.8

*Water molecules are not included.