Retinol binding protein

Retinol-binding proteins are a family of proteins with diverse functions. They are carrier proteins that bind retinol.

Assessment of retinol-binding protein is used to determine visceral protein mass in nutritional studies related to health.

Genes

Proteins: carrier proteins

Fatty acid	FABP1 · FABP2 · FABP3 · FABP4 · FABP5 · FABP6 · FABP7

Hormone	peptide hormone: Follistatin · Growth hormone binding protein · Insulin-like growth factor binding protein (IGFBP1, IGFBP2, IGFBP3, IGFBP4, IGFBP5, IGFBP6, IGFBP7) · Neurophysins (Neurophysin I, II) steroid hormone: Sex hormone binding globulin/Androgen binding protein · Transcortin · Thyroxine-binding globulin · Transthyretin

Metal/element	calcium (Calcium-binding protein, Calmodulin-binding proteins) · copper (Ceruloplasmin) · iron (Iron-binding proteins, Transferrin receptor)

Vitamin	Retinol binding protein (4) · Transcobalamin

Other	Acyl carrier protein · Adaptor protein · Cholesterylester transfer protein · F-box protein · GTP-binding protein · Latent TGF-beta binding protein · Light-harvesting complex · Major urinary proteins · Membrane transport protein · Odorant binding protein

B proteins: BY STRUCTURE: membrane, globular (en, ca, an), fibrous

Alpha globulins	serpins: alpha-1 (Alpha 1-antichymotrypsin, Alpha 1-antitrypsin) · alpha-2 (Alpha 2-antiplasmin) · Antithrombin (Heparin cofactor II) carrier proteins: alpha-1 (Transcortin) · alpha-2 (Ceruloplasmin) · Retinol binding protein other: alpha-1 (Orosomucoid) · alpha-2 (alpha-2-Macroglobulin, Haptoglobin)

Beta globulins	carrier proteins: Sex hormone-binding globulin · Transferrin other: Angiostatin · Hemopexin · Beta-2 microglobulin · Factor H · Plasminogen · Properdin

Gamma globulin	Immunoglobulins

Other	Fibronectin (Fetal fibronectin) · Macroglobulin/Microglobulin · Transcobalamin

Other globulins

Egg white	Conalbumin · Ovalbumin · Avidin

Serum albumin	Human serum albumin · Bovine serum albumin · Prealbumin

Other	C-reactive protein · Lactalbumin (Alpha-lactalbumin) · Parvalbumin · Ricin

see also disorders of globin and globulin proteins
B proteins: BY STRUCTURE: membrane, globular (en, ca, an), fibrous

Fat soluble vitamins

Vitamin A	Retinol binding protein

Vitamin E	Alpha-tocopherol transfer protein

Vitamin D	liver (Sterol 27-hydroxylase or CYP27A1) · renal (25-Hydroxyvitamin D₃ 1-alpha-hydroxylase or CYP27B1) · degradation (1,25-Dihydroxyvitamin D₃ 24-hydroxylase or CYP24A1)

Vitamin K	Vitamin K epoxide reductase

Water soluble vitamins

Thiamine (B₁)	Thiamine diphosphokinase

Niacin (B₃)	Indoleamine 2,3-dioxygenase · Formamidase

Pantothenic acid (B₅)	Pantothenate kinase

Folic acid (B₉)	Dihydropteroate synthase · Dihydrofolate reductase · Serine hydroxymethyltransferase Methylenetetrahydrofolate reductase

Vitamin B₁₂	MMAA · MMAB · MMACHC · MMADHC

Vitamin C	L-gulonolactone oxidase

Riboflavin (B₂)	Riboflavin kinase

Nonvitamin cofactors

Tetrahydrobiopterin	GTP cyclohydrolase I · 6-pyruvoyltetrahydropterin synthase · Sepiapterin reductase PCBD1 · PTS · QDPR

Molybdenum cofactor	MOCS1 · MOCS2 · MOCS3 · GPHN

cof, enz, met

noco, nuvi, sysi/epon, met

drug(A8/11/12)