2IKC

Crystal structure of sheep lactoperoxidase at 3.25 A resolution reveals the binding sites for formate

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	milk lactoperoxidase	polymer	595	67696.2	2	UniProt (Q9MZY2) In PDB	Ovis aries (sheep)	Peroxidase, Airway lactoperoxidase
2	C, D, F, G	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		424.4	4	In PDB GlyTouCan (G42666HT)
3	E, H	alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		586.5	2	In PDB GlyTouCan (G62182OO)
4	A, B	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	2	Chemie (NAG)
5	A, B	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
6	A, B	CARBONATE ION	non-polymer		60.0	2	Chemie (CO3)
7	A, B	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
8	A, B	FORMIC ACID	non-polymer		46.0	6	Chemie (FMT)
9		water	water		18.0	148	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	135392.3
Branched	Number of molecules	6
	Total formula weight	2870.7
Non-Polymers*	Number of molecules	14
	Total formula weight	2151.7
All*	Total formula weight	140414.7

*Water molecules are not included.