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Details on Person UniProt:P02753 RBP4

Class:IdReferenceGeneProduct:62956
_chainChangeLogsignal peptide:1-18 added on Fri February 6 2015;chain:19-201 added on Fri February 6 2015;chain:19-200 added on Fri February 6 2015;chain:19-199 added on Fri February 6 2015;chain:19-197 added on Fri February 6 2015;chain:19-194 added on Fri February 6 2015
_displayNameUniProt:P02753 RBP4
_timestamp2025-05-21 21:26:37
chainsignal peptide:1-18
chain:19-201
chain:19-200
chain:19-199
chain:19-197
chain:19-194
checksum660C6DD8CC9B811A
commentFUNCTION Retinol-binding protein that mediates retinol transport in blood plasma (PubMed:5541771). Delivers retinol from the liver stores to the peripheral tissues (Probable). Transfers the bound all-trans retinol to STRA6, that then facilitates retinol transport across the cell membrane (PubMed:22665496).SUBUNIT Interacts with TTR (PubMed:10052934, PubMed:19021760, PubMed:5541771, PubMed:7754382). Interaction with TTR prevents its loss by filtration through the kidney glomeruli (Probable). Interacts with STRA6 (PubMed:22665496, PubMed:25910211).INTERACTION Detected in blood plasma and in urine (at protein level).MASS SPECTROMETRY The disease is caused by variants affecting the gene represented in this entry. Loss of functional RBP4 protein results in serum retinol deficiency. Lack of normal levels of retinol impairs the visual cycle leading to night blindness at early stages; prolonged deficiency may lead to retinal degeneration. Additionally, retinol deficiency may result in dry skin, increased susceptibility to infection and acne (PubMed:23189188).DISEASE The disease is caused by variants affecting the gene represented in this entry.SIMILARITY Belongs to the calycin superfamily. Lipocalin family.SEQUENCE CAUTION Truncated N-terminus.ONLINE INFORMATION Retinol-binding protein 4 entry
descriptionrecommendedName: Retinol-binding protein 4 alternativeName: Plasma retinol-binding protein shortName: PRBP shortName: RBP component recommendedName: Plasma retinol-binding protein(1-182) /component component recommendedName: Plasma retinol-binding protein(1-181) /component component recommendedName: Plasma retinol-binding protein(1-179) /component component recommendedName: Plasma retinol-binding protein(1-176) /component
geneNameRBP4
PRO2222
identifierP02753
isSequenceChangedFALSE
keyword3D-structure
Direct protein sequencing
Disease variant
Disulfide bond
Methylation
Microphthalmia
Proteomics identification
Reference proteome
Retinol-binding
Secreted
Sensory transduction
Signal
Transport
Vision
Vitamin A
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9917590] Weiser, Joel, 2024-08-09
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9948485] Weiser, Joel, 2025-05-21
nameRBP4
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:8989175] ENSEMBL:ENSG00000138207 RBP4 [Homo sapiens]
secondaryIdentifierRET4_HUMAN
D3DR38
O43478
O43479
Q5VY24
Q8WWA3
Q9P178
sequenceLength201
species[Species:48887] Homo sapiens
(referenceEntity)[EntityWithAccessionedSequence:2453671] RBP4(19-201) [cytosol] [Homo sapiens]
[EntityWithAccessionedSequence:2453675] RBP4(19-201) [extracellular region] [Homo sapiens]
[EntityWithAccessionedSequence:2471928] RBP4 G75D [extracellular region] [Homo sapiens]
[EntityWithAccessionedSequence:2471954] RBP4 I41N [extracellular region] [Homo sapiens]
(referenceSequence)[ReplacedResidue:2471931] glycine 75 replaced with L-aspartic acid
[ReplacedResidue:2471949] L-isoleucine 41 replaced with L-asparagine
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No pathways have been reviewed or authored by UniProt:P02753 RBP4 (62956)