3ULT

Crystal structure of an ice-binding protein from the perennial ryegrass, Lolium perenne

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 recrystallization inhibition protein-like protein	polymer	133	13503.1	2	UniProt (B5T007) Pfam (PF21300)	Lolium perenne (perennial ryegrass)
2	C, J (A, B)	1,2-ETHANEDIOL	non-polymer		62.1	2	Chemie (EDO)
3	D, E, F, G, H... (A, B)	ETHANOL	non-polymer		46.1	11	Chemie (EOH)
4	P, Q (A, B)	water	water		18.0	235	Chemie (HOH)

Sequence modifications

A, B: 2 - 119 (UniProt: B5T007)

PDB	External Database	Details
Met 1	-	initiating methionine
Ala 120	-	expression tag
Lys 121	-	expression tag
Leu 122	-	expression tag
Ala 123	-	expression tag
Ala 124	-	expression tag
Ala 125	-	expression tag
Leu 126	-	expression tag
Glu 127	-	expression tag
His 128	-	expression tag
His 129	-	expression tag
His 130	-	expression tag
His 131	-	expression tag
His 132	-	expression tag
His 133	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	27006.1
Non-Polymers*	Number of molecules	13
	Total formula weight	630.9
All*	Total formula weight	27637.0

*Water molecules are not included.