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(haɪˌdrɒksɪˈprəʊliːn; -lɪn)
(Biochemistry) an amino acid occurring in some proteins, esp collagen. Formula: (OH)C4H7N(COOH)


(haɪˈdrɒk sɪˈproʊ lin, -lɪn)

a nutritionally nonessential amino acid, C5H9NO3, found chiefly in collagen.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hydroxyproline - a crystalline amino acid obtained from gelatin or collagen
amino acid, aminoalkanoic acid - organic compounds containing an amino group and a carboxylic acid group; "proteins are composed of various proportions of about 20 common amino acids"
References in periodicals archive ?
PURE GOLD COLLAGEN(TM) uses marine collagen protein, derived from farm raised tilapia that is rich in amino acids, glycine, proline and hydroxyproline, which are easily absorbed by the body.
The concentrations of angiotensin II (Ang II), hydroxyproline (Hyp), matrix metalloproteinase 2 (MMP-2), MMP-9 and tissue inhibitor of metalloproteinase-1 (TIMP-1) in myocardium or serum were determined.
INCI: Water, sodium PCA, wheat amino acids, panthenol, glycerin, sodium hyaluronate, hydroxyproline
The chloramine-T assay for hydroxyproline was used to determine collagen content by assuming 12.
The specific amino acid sequence of native collagen renders Peptan's amino acid composition unique with high levels of glycine, proline, hydroxyproline, glutamic acid and arginine," Ms.
Healing after myocardial infarction in the dog: changes in infarct hydroxyproline and topography.
Also, increased blood circulation and hydroxyproline levels have been observed at the application sites.
During spaceflight, bone mineral is constantly being lost from the weight-bearing sites of the skeleton at an average of 2%-3% per month, accompanied by increases in urine excretion of Ca2+ and hydroxyproline expressing the net bone loss at the tissue level (9), (23), (24).
The bone formation markers in the serum include osteocalcin (OC), alkaline phosphatase (ALP), and procollagen, while bone resorption markers include carboxyterminal telopeptide of type I collagen and in urine as hydroxyproline, collagen type I telopeptide, etc.
In addition, significant alterations in cardiovagal regulation and impairment of conduit artery function (12), lower ankle brachial index (13), increased concentrations of serum hydroxyproline, which predicts collagen turnover status (14), increased homocysteine levels (15, 16), impaired endothelial functions, and increased carotid intima-media thickness (16) were reported to be associated with PEX.

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