4WQQ

Structure of EPNH mutant of CEL-I

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 (A, B, C, D)	Lectin CEL-I, N-acetyl-D-galactosamine-specific C-type	polymer	141	16129.4	4	UniProt (Q7M462) Pfam (PF00059)	Cucumaria echinata (Sea cucumber)
2	E, F, G, I, J... (A, B, C, D)	CALCIUM ION	non-polymer		40.1	12	Chemie (CA)
3	H, L, P, T (A, B, C, D)	alpha-D-mannopyranose	non-polymer		180.2	4	Chemie (MAN)
4	U, V, W, X (A, B, C, D)	water	water		18.0	758	Chemie (HOH)

Sequence modifications

A, B, C, D: 1 - 140 (UniProt: Q7M462)

PDB	External Database	Details
Met 0	-	expression tag
Glu 101	Gln 101	engineered mutation
Asn 103	Asp 103	engineered mutation
His 105	Trp 105	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	64517.6
Non-Polymers*	Number of molecules	16
	Total formula weight	1201.6
All*	Total formula weight	65719.1

*Water molecules are not included.