2QST

Crystal structure of the V39C mutant of the N-terminal domain of carcinoembryonic antigen (CEA)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Carcinoembryonic antigen-related cell adhesion molecule 5	polymer	111	12435.0	2	UniProt (P06731) Pfam (PF07686)	Homo sapiens (human)	Carcinoembryonic antigen, CEA, Meconium antigen 100, CD66e antigen
2	C, D (A, B)	water	water		18.0	11	Chemie (HOH)

Sequence modifications

A, B: 0 - 110 (UniProt: P06731)

PDB	External Database	Details
Cys 39	Val 73	engineered mutation
Ala 83	Thr 117	SEE REMARK 999

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	24870.0
All*	Total formula weight	24870.0

*Water molecules are not included.