1K5U

Human acidic fibroblast growth factor. 141 amino acid form with amino terminal His tag with His93 replaced by Gly (H93G).

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C	Acidic fibroblast growth factor	polymer	146	16605.7	3	UniProt (P05230) Pfam (PF00167) In PDB	Homo sapiens (human)
2	A, B, C	SULFATE ION	non-polymer		96.1	3	Chemie (SO4)
3		water	water		18.0	83	Chemie (HOH)

Sequence modifications

A, B, C: 1 - 139 (UniProt: P05230)

PDB	External Database	Details
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
Gly 93	His 103	engineered mutation
Asp 140	-	cloning artifact

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	49817.0
Non-Polymers*	Number of molecules	3
	Total formula weight	288.2
All*	Total formula weight	50105.2

*Water molecules are not included.