4WHC

Human CEACAM6 N-domain

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Carcinoembryonic antigen-related cell adhesion molecule 6	polymer	108	11913.2	2	UniProt (P40199) Pfam (PF07686) In PDB	Homo sapiens (Human)	Non-specific crossreacting antigen,Normal cross-reacting antigen
2	A	ZINC ION	non-polymer		65.4	1	Chemie (ZN)
3		water	water		18.0	9	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	23826.5
Non-Polymers*	Number of molecules	1
	Total formula weight	65.4
All*	Total formula weight	23891.9

*Water molecules are not included.