4QRA

Structure and specificity of L-D-Transpeptidase from Mycobacterium tuberculosis and antibiotic resistance: Calcium binding promotes dimer formation

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	L,d-transpeptidase LdtB	polymer	352	37678.8	2	UniProt (I6Y9J2) Pfam (PF17964) Pfam (PF03734) In PDB	Mycobacterium tuberculosis
2	A	CALCIUM ION	non-polymer		40.1	1	Chemie (CA)
3		water	water		18.0	297	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	75357.7
Non-Polymers*	Number of molecules	1
	Total formula weight	40.1
All*	Total formula weight	75397.8

*Water molecules are not included.