1rbp is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
[RET4_HUMAN] Defects in RBP4 are a cause of retinol-binding protein deficiency (RBP deficiency) [MIM:180250]. This condition causes night vision problems. It produces a typical 'fundus xerophthalmicus', featuring a progressed atrophy of the retinal pigment epithelium.
Function
[RET4_HUMAN] Delivers retinol from the liver stores to the peripheral tissues. In plasma, the RBP-retinol complex interacts with transthyretin, this prevents its loss by filtration through the kidney glomeruli.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Human serum retinol binding protein (RBP) in complex with retinol has been crystallographically refined to an R-factor of 18.1% with 2A resolution data. The protein topology results in an anti-parallel beta-barrel that encapsulates the retinol ligand. A detailed description of the protein and the binding site is provided. Our structural work has helped to define a family of proteins, many of which are carrier proteins for smaller ligand molecules. We describe the structural basis for the conservation of sequence within the family.
Crystallographic refinement of human serum retinol binding protein at 2A resolution.,Cowan SW, Newcomer ME, Jones TA Proteins. 1990;8(1):44-61. PMID:2217163[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
↑ Cowan SW, Newcomer ME, Jones TA. Crystallographic refinement of human serum retinol binding protein at 2A resolution. Proteins. 1990;8(1):44-61. PMID:2217163 doi:http://dx.doi.org/10.1002/prot.340080108
