1BRQ: Retinol binding protein

Crystal structure of the trigonal form of human plasma retinol-binding protein at 2.5 Å resolution. Determined by X-ray diffraction at 2.5 Å resolution. Released 31 Jan 1994.

Method: X-ray diffraction
Resolution: 2.5 Å
Organism: Homo sapiens
Chains: 1
Atoms: 1,463
Mol. weight: 20.98 kDa
Released: 31 Jan 1994

Explore 1BRQ in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1BRQ contains 3 α-helices and 11 β-strands across 1 chain. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 3 helices, 11 β-strands

Element	Residues	Length	Sheet
β-strand	5	1	1
α-helix	6-8	3
α-helix	17-20	4
β-strand	22-30	9	2
β-strand	42-48	7	2
β-strand	52-62	11	2
β-strand	68-78	11	2
β-strand	85-92	8	2
β-strand	99-109	11	2
β-strand	114-123	10	2
β-strand	128	1	1
β-strand	129-138	10	2
α-helix	146-158	13
β-strand	166-167	2	2

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Retinol binding protein	A	protein	182	Homo sapiens	P02753 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>1BRQ_1 RETINOL BINDING PROTEIN (chains A)
ERDCRVSSFRVKENFDKARFSGTWYAMAKKDPEGLFLQDNIVAEFSVDETGQMSATAKGR
VRLLNNWDVCADMVGTFTDTEDPAKFKMKYWGVASFLQKGNDDHWIVDTDYDTYAVQYSC
RLLNLDGTCADSYSFVFSRDPNGLPPEAQKIVRQRQEELCLARQYRLIVHNGYCDGRSER
NL

Primary citation

Crystal structure of the trigonal form of human plasma retinol-binding protein at 2.5 A resolution. Zanotti, G., Ottonello, S., Berni, R. et al. J Mol Biol (1993) 230:613-624. DOI 10.1006/jmbi.1993.1173 · PubMed

Other PDB entries of the same protein (UniProt P02753 (AlphaFold model), which also has an AlphaFold model), best resolution first:

5NU2 1.5 Å, Structure of non-fluorescent human urine RBP4
5NU7 1.5 Å, Structure of human holo plasma RBP4
5NU9 1.5 Å, Structure of human amniotic fluid RBP4 saturated with palmitate
5NU8 1.59 Å, Structure of human urine RBP4 saturated with palmitate
5NUA 1.6 Å, Structure of human urine RBP4 saturated with laurate
5NUB 1.6 Å, Structure of human amniotic fluid RBP4 saturated with laurate
2WQ9 1.65 Å, Crystal Structure of RBP4 bound to Oleic Acid
5NU6 1.68 Å, Structure of non-fluorescent human amniotic fluid RBP4
1JYD 1.7 Å, Crystal Structure of Recombinant Human Serum Retinol-Binding Protein at 1.7 A Resolution
2WR6 1.8 Å, Structure of the complex of RBP4 with linoleic acid
6QBA 1.8 Å, Crystal Structure of Retinol-Binding Protein 4 (RBP4) in complex with non-retinoid…
1JYJ 2.0 Å, Crystal Structure of a Double Variant (W67L/W91H) of Recombinant Human Serum…

Browse structure collections

About this viewer

MolViewer shows 1BRQ directly in your browser with nothing to install. Switch between cartoon, ball-and-stick, spacefill and surface views, color by chain, secondary structure or B-factor, measure distances, angles and dihedrals, and share or embed the view.