4J6J

Crystal structure of calcium2+-free wild-type CD23 lectin domain (crystal form A)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	Low affinity immunoglobulin epsilon Fc receptor	polymer	143	16165.0	4	UniProt (P06734) Pfam (PF00059) In PDB	Homo sapiens (human)	BLAST-2, C-type lectin domain family 4 member J, Fc-epsilon-RII, Immunoglobulin E-binding factor, Lymphocyte IgE receptor, Low affinity immunoglobulin epsilon Fc receptor membrane-bound form, Low affinity immunoglobulin epsilon Fc receptor soluble form
2	C, D	SULFATE ION	non-polymer		96.1	2	Chemie (SO4)
3		water	water		18.0	201	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	64659.9
Non-Polymers*	Number of molecules	2
	Total formula weight	192.1
All*	Total formula weight	64852.1

*Water molecules are not included.