1ZKR

Crystal structure of the major cat allergen Fel d 1 (1+2)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Major allergen I polypeptide, fused chain 1, chain 2	polymer	153	17208.8	2	UniProt (P30438) UniProt (P30440) Pfam (PF01099) Pfam (PF09252) In PDB	Felis catus (domestic cat)	Allergen Fel d 1-B, Fel d I-B, Allergen Cat-1, AG4, FdI, Fel d 1 (1+2)
2		water	water		18.0	241	Chemie (HOH)

Sequence modifications

A, B: 1 - 70 (UniProt: P30438)

PDB	External Database	Details
Met 0	-	INITIATING METHIONINE
Leu 60	Val 82	CONFLICT
His 147	-	EXPRESSION TAG
His 148	-	EXPRESSION TAG
His 149	-	EXPRESSION TAG
His 150	-	EXPRESSION TAG
His 151	-	EXPRESSION TAG
His 152	-	EXPRESSION TAG

A, B: 71 - 146 (UniProt: P30440)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	34417.6
All*	Total formula weight	34417.6

*Water molecules are not included.