4XXI

Crystal structure of the Bilin-binding domain of phycobilisome core-membrane linker ApcE

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Phycobiliprotein ApcE	polymer	157	17677.1	2	UniProt (P80559) Pfam (PF00502) In PDB	Nostoc sp. (strain PCC 7120 / UTEX 2576)	Anchor polypeptide,PBS-anchor protein,Phycobilisome linker polypeptide,Anchor polypeptide,PBS-anchor protein,Phycobilisome linker polypeptide
2	A, B	PHYCOCYANOBILIN	non-polymer		588.7	2	Chemie (CYC)
3		water	water		18.0	62	Chemie (HOH)

Sequence modifications

A, B: 20 - 76 (UniProt: P80559)

PDB	External Database	Details
Met 19	-	expression tag

A, B: 154 - 240 (UniProt: P80559)

PDB	External Database	Details
Gln 77	-	linker
Lys 78	-	linker
Ile 79	-	linker
Glu 80	-	linker
Leu 241	-	expression tag
Glu 242	-	expression tag
His 243	-	expression tag
His 244	-	expression tag
His 245	-	expression tag
His 246	-	expression tag
His 247	-	expression tag
His 248	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	35354.2
Non-Polymers*	Number of molecules	2
	Total formula weight	1177.4
All*	Total formula weight	36531.6

*Water molecules are not included.