2QND

Crystal Structure of the KH1-KH2 domains from human Fragile X Mental Retardation Protein

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)	FMR1 protein	polymer	144	16152.1	2	UniProt (Q5PQZ6) Pfam (PF00013) UniProt (by SIFTS) (Q06787)	Homo sapiens (human)
2	C (A)	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
3	D, E (A, B)	water	water		18.0	133	Chemie (HOH)

Sequence modifications

A, B: 1 - 115 (UniProt: Q5PQZ6)
A, B: 116 - 144 (UniProt: Q5PQZ6)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	32304.1
Non-Polymers*	Number of molecules	1
	Total formula weight	24.3
All*	Total formula weight	32328.4

*Water molecules are not included.