3FEK

Crystal structure of the R132K:Y134F:R111L:L121D:T54V mutant of cellular retinoic acid-binding protein II at 1.51 angstrom resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	B, A	Cellular retinoic acid-binding protein 2	polymer	137	15493.7	2	UniProt (P29373) Pfam (PF00061) In PDB	Homo sapiens (Human)	Cellular retinoic acid-binding protein II, CRABP-II
2	A	ACETATE ION	non-polymer		59.0	1	Chemie (ACT)
3	A	DI(HYDROXYETHYL)ETHER	non-polymer		106.1	2	Chemie (PEG)
4		water	water		18.0	318	Chemie (HOH)

Sequence modifications

B, A: 1 - 137 (UniProt: P29373)

PDB	External Database	Details
Val 54	Thr 55	engineered mutation
Leu 111	Arg 112	engineered mutation
Asp 121	Leu 122	engineered mutation
Lys 132	Arg 133	engineered mutation
Phe 134	Tyr 135	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	30987.4
Non-Polymers*	Number of molecules	3
	Total formula weight	271.3
All*	Total formula weight	31258.7

*Water molecules are not included.