5XQR

Crystal structure of Notched-fin eelpout type III antifreeze protein A20V mutant (NFE6, AFP), C2221 form

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)	Ice-structuring protein	polymer	67	7034.3	2	UniProt (Q53UJ4)	Zoarces elongatus	Antifreeze protein
2	C, D (A, B)	ACETATE ION	non-polymer		59.0	2	Chemie (ACT)
3	E, F (A, B)	water	water		18.0	231	Chemie (HOH)

Sequence modifications

A, B: 2 - 67 (UniProt: Q53UJ4)

PDB	External Database	Details
Met 1	-	initiating methionine
Val 20	Ala 41	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	14068.7
Non-Polymers*	Number of molecules	2
	Total formula weight	118.1
All*	Total formula weight	14186.8

*Water molecules are not included.