3TMR

IrisFP, planar chromophore

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, D (A, B, C, D)	Green to red photoconvertible GPF-like protein EosFP	polymer	232	26542.0	4	UniProt (Q5S6Z9) Pfam (PF01353)	Lobophyllia hemprichii (Lobed brain coral)
2	E, F, G, I, J... (A, B, C, D)	SULFATE ION	non-polymer		96.1	19	Chemie (SO4)
3	AA, H, M, U (D, A, B, C)	SULFITE ION	non-polymer		80.1	4	Chemie (SO3)
4	BA, CA, DA, EA (A, B, C, D)	water	water		18.0	889	Chemie (HOH)

Sequence modifications

A, B, C, D: 1 - 226 (UniProt: Q5S6Z9)

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
Cr8 64	His 62	chromophore
Cr8 64	Tyr 63	chromophore
Cr8 64	Gly 64	chromophore
Ser 173	Phe 173	engineered mutation
Leu 191	Phe 191	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	106168.1
Non-Polymers*	Number of molecules	23
	Total formula weight	2145.4
All*	Total formula weight	108313.5

*Water molecules are not included.