1PUO

Crystal structure of Fel d 1- the major cat allergen

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)	Major allergen I polypeptide, fused chain 2, chain 1	polymer	170	19074.9	2	UniProt (P30440) UniProt (P30438) Pfam (PF09252) Pfam (PF01099)	Felis catus (domestic cat)	Allergen Fel d 1-B, Allergen Fel d 1-A
2	C, D, E, F (A, B)	(4S)-2-METHYL-2,4-PENTANEDIOL	non-polymer		118.2	4	Chemie (MPD)
3	G, H (A, B)	water	water		18.0	233	Chemie (HOH)

Sequence modifications

A, B: 1 - 92 (UniProt: P30440)

PDB	External Database	Details
Leu 163	-	expression tag
Glu 164	-	expression tag
His 165	-	expression tag
His 166	-	expression tag
His 167	-	expression tag
His 168	-	expression tag
His 169	-	expression tag
His 170	-	expression tag

A, B: 93 - 162 (UniProt: P30438)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	38149.7
Non-Polymers*	Number of molecules	4
	Total formula weight	472.7
All*	Total formula weight	38622.4

*Water molecules are not included.