4R4S

Crystal structure of chimeric beta-lactamase cTEM-19m at 1.1 angstrom resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Beta-lactamase TEM,Beta-lactamase PSE-4	polymer	263	28827.8	1	UniProt (P62593) UniProt (P16897)	Escherichia coli	IRT-4, Penicillinase, TEM-1, TEM-16/CAZ-7, TEM-2, TEM-24/CAZ-6, TEM-3, TEM-4, TEM-5, TEM-6, TEM-8/CAZ-2
2	B, C, D, E, F (A)	CHLORIDE ION	non-polymer		35.5	5	Chemie (CL)
3	G, H, I, J (A)	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
4	K (A)	water	water		18.0	464	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	9
	Total formula weight	274.5
All*	Total formula weight	29102.3

*Water molecules are not included.