1NZI

Crystal Structure of the CUB1-EGF Interaction Domain of Complement Protease C1s

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Complement C1s component	polymer	159	18144.9	2	UniProt (P09871) Pfam (PF00431) Pfam (PF14670) In PDB	Homo sapiens (human)
2	A, B	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
3	A, B	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4		water	water		18.0	288	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	36289.8
Non-Polymers*	Number of molecules	4
	Total formula weight	128.8
All*	Total formula weight	36418.6

*Water molecules are not included.