Clupanodonic acid

(7Z,10Z,13Z,16Z,19Z)-Docosa-7,10,13,16,19-pentaenoic acid

Formula: C22H34O2 (330.2559)
Chinese Name: 二十二碳五烯酸
BioDeep ID: BioDeep_00000003493 ( View LC/MS Profile)
SMILES: C(CCCCC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CC)(=O)O



Found 96 Sample Hits

m/z Adducts Species Organ Scanning Sample
330.2789 [M-H2O+NH4]+
PPM:0.7
Homo sapiens Liver MALDI (DHB)
20171107_FIT4_DHBpos_p70_s50 - Rappez et al (2021) SpaceM reveals metabolic states of single cells
Resolution: 50μm, 70x70

Description

330.2525 [M]+
PPM:8.5
Homo sapiens esophagus DESI ()
LNTO22_1_3 - MTBLS385
Resolution: 75μm, 121x68

Description

331.2648 [M+H]+
PPM:5
Homo sapiens esophagus DESI ()
LNTO22_1_3 - MTBLS385
Resolution: 75μm, 121x68

Description

330.2511 [M]+
PPM:12.8
Homo sapiens esophagus DESI ()
LNTO22_1_4 - MTBLS385
Resolution: 17μm, 82x80

Description

331.2634 [M+H]+
PPM:0.8
Homo sapiens esophagus DESI ()
LNTO22_1_4 - MTBLS385
Resolution: 17μm, 82x80

Description

295.2473 [M+H-2H2O]+
PPM:17.9
Homo sapiens esophagus DESI ()
LNTO29_16_2 - MTBLS385
Resolution: 17μm, 95x101

Description

313.257 [M+H-H2O]+
PPM:14.1
Homo sapiens esophagus DESI ()
LNTO29_16_2 - MTBLS385
Resolution: 17μm, 95x101

Description

330.2522 [M]+
PPM:9.4
Homo sapiens esophagus DESI ()
LNTO29_16_2 - MTBLS385
Resolution: 17μm, 95x101

Description

331.2644 [M+H]+
PPM:3.8
Homo sapiens esophagus DESI ()
LNTO29_16_2 - MTBLS385
Resolution: 17μm, 95x101

Description

353.2481 [M+Na]+
PPM:8.5
Homo sapiens esophagus DESI ()
LNTO29_16_2 - MTBLS385
Resolution: 17μm, 95x101

Description

330.2517 [M]+
PPM:11
Homo sapiens esophagus DESI ()
TO42T - MTBLS385
Resolution: 17μm, 69x81

Description

331.264 [M+H]+
PPM:2.6
Homo sapiens esophagus DESI ()
TO42T - MTBLS385
Resolution: 17μm, 69x81

Description

353.2483 [M+Na]+
PPM:9.1
Homo sapiens esophagus DESI ()
TO42T - MTBLS385
Resolution: 17μm, 69x81

Description

295.2382 [M+H-2H2O]+
PPM:12.9
Mus musculus Liver MALDI (CHCA)
Salmonella_final_pos_recal - MTBLS2671
Resolution: 17μm, 691x430

Description

A more complete and holistic view on host–microbe interactions is needed to understand the physiological and cellular barriers that affect the efficacy of drug treatments and allow the discovery and development of new therapeutics. Here, we developed a multimodal imaging approach combining histopathology with mass spectrometry imaging (MSI) and same section imaging mass cytometry (IMC) to study the effects of Salmonella Typhimurium infection in the liver of a mouse model using the S. Typhimurium strains SL3261 and SL1344. This approach enables correlation of tissue morphology and specific cell phenotypes with molecular images of tissue metabolism. IMC revealed a marked increase in immune cell markers and localization in immune aggregates in infected tissues. A correlative computational method (network analysis) was deployed to find metabolic features associated with infection and revealed metabolic clusters of acetyl carnitines, as well as phosphatidylcholine and phosphatidylethanolamine plasmalogen species, which could be associated with pro-inflammatory immune cell types. By developing an IMC marker for the detection of Salmonella LPS, we were further able to identify and characterize those cell types which contained S. Typhimurium. [dataset] Nicole Strittmatter. Holistic Characterization of a Salmonella Typhimurium Infection Model Using Integrated Molecular Imaging, metabolights_dataset, V1; 2022. https://www.ebi.ac.uk/metabolights/MTBLS2671.

353.2449 [M+Na]+
PPM:0.5
Mus musculus Liver MALDI (CHCA)
Salmonella_final_pos_recal - MTBLS2671
Resolution: 17μm, 691x430

Description

A more complete and holistic view on host–microbe interactions is needed to understand the physiological and cellular barriers that affect the efficacy of drug treatments and allow the discovery and development of new therapeutics. Here, we developed a multimodal imaging approach combining histopathology with mass spectrometry imaging (MSI) and same section imaging mass cytometry (IMC) to study the effects of Salmonella Typhimurium infection in the liver of a mouse model using the S. Typhimurium strains SL3261 and SL1344. This approach enables correlation of tissue morphology and specific cell phenotypes with molecular images of tissue metabolism. IMC revealed a marked increase in immune cell markers and localization in immune aggregates in infected tissues. A correlative computational method (network analysis) was deployed to find metabolic features associated with infection and revealed metabolic clusters of acetyl carnitines, as well as phosphatidylcholine and phosphatidylethanolamine plasmalogen species, which could be associated with pro-inflammatory immune cell types. By developing an IMC marker for the detection of Salmonella LPS, we were further able to identify and characterize those cell types which contained S. Typhimurium. [dataset] Nicole Strittmatter. Holistic Characterization of a Salmonella Typhimurium Infection Model Using Integrated Molecular Imaging, metabolights_dataset, V1; 2022. https://www.ebi.ac.uk/metabolights/MTBLS2671.

330.253 [M]+
PPM:7
Homo sapiens esophagus DESI ()
LNTO22_1_9 - MTBLS385
Resolution: 75μm, 89x74

Description

331.2652 [M+H]+
PPM:6.2
Homo sapiens esophagus DESI ()
LNTO22_1_9 - MTBLS385
Resolution: 75μm, 89x74

Description

353.2495 [M+Na]+
PPM:12.5
Homo sapiens esophagus DESI ()
LNTO22_1_9 - MTBLS385
Resolution: 75μm, 89x74

Description

330.252 [M]+
PPM:10
Homo sapiens esophagus DESI ()
LNTO30_8M_1 - MTBLS385
Resolution: 17μm, 69x54

Description

331.2643 [M+H]+
PPM:3.5
Homo sapiens esophagus DESI ()
LNTO30_8M_1 - MTBLS385
Resolution: 17μm, 69x54

Description

330.2518 [M]+
PPM:10.7
Homo sapiens esophagus DESI ()
TO39T - MTBLS385
Resolution: 17μm, 69x81

Description

331.264 [M+H]+
PPM:2.6
Homo sapiens esophagus DESI ()
TO39T - MTBLS385
Resolution: 17μm, 69x81

Description

353.2483 [M+Na]+
PPM:9.1
Homo sapiens esophagus DESI ()
TO39T - MTBLS385
Resolution: 17μm, 69x81

Description

330.2499 [M]+
PPM:16.4
Homo sapiens colorectal adenocarcinoma DESI ()
80TopL, 50TopR, 70BottomL, 60BottomR-profile - MTBLS415
Resolution: 17μm, 137x136

Description

The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

331.2579 [M+H]+
PPM:0.4
Homo sapiens colorectal adenocarcinoma DESI ()
80TopL, 50TopR, 70BottomL, 60BottomR-profile - MTBLS415
Resolution: 17μm, 137x136

Description

The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

353.2472 [M+Na]+
PPM:6
Homo sapiens colorectal adenocarcinoma DESI ()
80TopL, 50TopR, 70BottomL, 60BottomR-profile - MTBLS415
Resolution: 17μm, 137x136

Description

The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

330.2496 [M]+
PPM:17.3
Homo sapiens colorectal adenocarcinoma DESI ()
520TopL, 490TopR, 510BottomL, 500BottomR-profile - MTBLS415
Resolution: 17μm, 147x131

Description

The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

331.2653 [M+H]+
PPM:6.5
Homo sapiens colorectal adenocarcinoma DESI ()
520TopL, 490TopR, 510BottomL, 500BottomR-profile - MTBLS415
Resolution: 17μm, 147x131

Description

The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

331.2626 [M+H]+
PPM:1.6
Homo sapiens colorectal adenocarcinoma DESI ()
439TopL, 409TopR, 429BottomL, 419BottomR-profile - MTBLS415
Resolution: 17μm, 157x136

Description

The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

330.2502 [M]+
PPM:15.5
Homo sapiens NA DESI ()
160TopL,130TopR,150BottomL,140BottomR-profile - MTBLS415
Resolution: 17μm, 142x136

Description

331.2682 [M+H]+
PPM:15.3
Homo sapiens NA DESI ()
160TopL,130TopR,150BottomL,140BottomR-profile - MTBLS415
Resolution: 17μm, 142x136

Description

295.2471 [M+H-2H2O]+
PPM:17.2
Homo sapiens esophagus DESI ()
LNTO29_16_3 - MTBLS385
Resolution: 17μm, 108x107

Description

313.2566 [M+H-H2O]+
PPM:12.8
Homo sapiens esophagus DESI ()
LNTO29_16_3 - MTBLS385
Resolution: 17μm, 108x107

Description

330.2519 [M]+
PPM:10.3
Homo sapiens esophagus DESI ()
LNTO29_16_3 - MTBLS385
Resolution: 17μm, 108x107

Description

331.2642 [M+H]+
PPM:3.2
Homo sapiens esophagus DESI ()
LNTO29_16_3 - MTBLS385
Resolution: 17μm, 108x107

Description

353.2477 [M+Na]+
PPM:7.4
Homo sapiens esophagus DESI ()
LNTO29_16_3 - MTBLS385
Resolution: 17μm, 108x107

Description

330.2526 [M]+
PPM:8.2
Homo sapiens esophagus DESI ()
LNTO26_7_1 - MTBLS385
Resolution: 17μm, 75x74

Description

331.2649 [M+H]+
PPM:5.3
Homo sapiens esophagus DESI ()
LNTO26_7_1 - MTBLS385
Resolution: 17μm, 75x74

Description

353.2491 [M+Na]+
PPM:11.4
Homo sapiens esophagus DESI ()
LNTO26_7_1 - MTBLS385
Resolution: 17μm, 75x74

Description

330.253 [M]+
PPM:7
Homo sapiens esophagus DESI ()
LNTO26_7_2 - MTBLS385
Resolution: 17μm, 135x101

Description

331.2653 [M+H]+
PPM:6.5
Homo sapiens esophagus DESI ()
LNTO26_7_2 - MTBLS385
Resolution: 17μm, 135x101

Description

330.2524 [M]+
PPM:8.8
Homo sapiens esophagus DESI ()
LNTO26_7_3 - MTBLS385
Resolution: 75μm, 82x88

Description

331.2647 [M+H]+
PPM:4.7
Homo sapiens esophagus DESI ()
LNTO26_7_3 - MTBLS385
Resolution: 75μm, 82x88

Description

353.249 [M+Na]+
PPM:11.1
Homo sapiens esophagus DESI ()
LNTO26_7_3 - MTBLS385
Resolution: 75μm, 82x88

Description

331.2635 [M+H]+
PPM:1.1
Homo sapiens esophagus DESI ()
TO40T - MTBLS385
Resolution: 17μm, 82x74

Description

353.2476 [M+Na]+
PPM:7.1
Homo sapiens esophagus DESI ()
TO40T - MTBLS385
Resolution: 17μm, 82x74

Description

330.252 [M]+
PPM:10
Homo sapiens esophagus DESI ()
TO31T - MTBLS385
Resolution: 75μm, 56x54

Description

331.2643 [M+H]+
PPM:3.5
Homo sapiens esophagus DESI ()
TO31T - MTBLS385
Resolution: 75μm, 56x54

Description

353.2486 [M+Na]+
PPM:9.9
Homo sapiens esophagus DESI ()
TO31T - MTBLS385
Resolution: 75μm, 56x54

Description

330.2525 [M]+
PPM:8.5
Homo sapiens esophagus DESI ()
TO29T - MTBLS385
Resolution: 75μm, 56x48

Description

331.2648 [M+H]+
PPM:5
Homo sapiens esophagus DESI ()
TO29T - MTBLS385
Resolution: 75μm, 56x48

Description

353.2491 [M+Na]+
PPM:11.4
Homo sapiens esophagus DESI ()
TO29T - MTBLS385
Resolution: 75μm, 56x48

Description

330.2519 [M]+
PPM:10.3
Homo sapiens esophagus DESI ()
TO41T - MTBLS385
Resolution: 75μm, 69x43

Description

331.2643 [M+H]+
PPM:3.5
Homo sapiens esophagus DESI ()
TO41T - MTBLS385
Resolution: 75μm, 69x43

Description

330.2521 [M]+
PPM:9.7
Homo sapiens esophagus DESI ()
LNTO30_8M_2 - MTBLS385
Resolution: 75μm, 108x68

Description

331.2644 [M+H]+
PPM:3.8
Homo sapiens esophagus DESI ()
LNTO30_8M_2 - MTBLS385
Resolution: 75μm, 108x68

Description

330.252 [M]+
PPM:10
Homo sapiens esophagus DESI ()
LNTO30_8M_3 - MTBLS385
Resolution: 75μm, 69x54

Description

331.2643 [M+H]+
PPM:3.5
Homo sapiens esophagus DESI ()
LNTO30_8M_3 - MTBLS385
Resolution: 75μm, 69x54

Description

330.2523 [M]+
PPM:9.1
Homo sapiens esophagus DESI ()
LNTO30_8M_4 - MTBLS385
Resolution: 75μm, 62x48

Description

331.2646 [M+H]+
PPM:4.4
Homo sapiens esophagus DESI ()
LNTO30_8M_4 - MTBLS385
Resolution: 75μm, 62x48

Description

330.2523 [M]+
PPM:9.1
Homo sapiens esophagus DESI ()
LNTO30_8M_5 - MTBLS385
Resolution: 75μm, 56x54

Description

331.2645 [M+H]+
PPM:4.1
Homo sapiens esophagus DESI ()
LNTO30_8M_5 - MTBLS385
Resolution: 75μm, 56x54

Description

353.2483 [M+Na]+
PPM:9.1
Homo sapiens esophagus DESI ()
LNTO30_8M_5 - MTBLS385
Resolution: 75μm, 56x54

Description

330.2521 [M]+
PPM:9.7
Homo sapiens esophagus DESI ()
LNTO30_17_2 - MTBLS385
Resolution: 75μm, 82x54

Description

331.2644 [M+H]+
PPM:3.8
Homo sapiens esophagus DESI ()
LNTO30_17_2 - MTBLS385
Resolution: 75μm, 82x54

Description

330.2527 [M]+
PPM:7.9
Homo sapiens esophagus DESI ()
LNTO22_1_5 - MTBLS385
Resolution: 75μm, 135x94

Description

331.2651 [M+H]+
PPM:5.9
Homo sapiens esophagus DESI ()
LNTO22_1_5 - MTBLS385
Resolution: 75μm, 135x94

Description

330.2526 [M]+
PPM:8.2
Homo sapiens esophagus DESI ()
LNTO22_1_7 - MTBLS385
Resolution: 75μm, 69x54

Description

331.2649 [M+H]+
PPM:5.3
Homo sapiens esophagus DESI ()
LNTO22_1_7 - MTBLS385
Resolution: 75μm, 69x54

Description

353.2491 [M+Na]+
PPM:11.4
Homo sapiens esophagus DESI ()
LNTO22_1_7 - MTBLS385
Resolution: 75μm, 69x54

Description

330.2524 [M]+
PPM:8.8
Homo sapiens esophagus DESI ()
LNTO22_1_8 - MTBLS385
Resolution: 75μm, 69x61

Description

331.2647 [M+H]+
PPM:4.7
Homo sapiens esophagus DESI ()
LNTO22_1_8 - MTBLS385
Resolution: 75μm, 69x61

Description

330.2525 [M]+
PPM:8.5
Homo sapiens esophagus DESI ()
LNTO22_2_1 - MTBLS385
Resolution: 75μm, 89x88

Description

331.2648 [M+H]+
PPM:5
Homo sapiens esophagus DESI ()
LNTO22_2_1 - MTBLS385
Resolution: 75μm, 89x88

Description

330.2527 [M]+
PPM:7.9
Homo sapiens esophagus DESI ()
LNTO22_2_2 - MTBLS385
Resolution: 75μm, 135x94

Description

331.265 [M+H]+
PPM:5.6
Homo sapiens esophagus DESI ()
LNTO22_2_2 - MTBLS385
Resolution: 75μm, 135x94

Description

330.2526 [M]+
PPM:8.2
Homo sapiens esophagus DESI ()
LNTO26_16_1 - MTBLS385
Resolution: 75μm, 95x88

Description

331.2649 [M+H]+
PPM:5.3
Homo sapiens esophagus DESI ()
LNTO26_16_1 - MTBLS385
Resolution: 75μm, 95x88

Description

353.2491 [M+Na]+
PPM:11.4
Homo sapiens esophagus DESI ()
LNTO26_16_1 - MTBLS385
Resolution: 75μm, 95x88

Description

295.2473 [M+H-2H2O]+
PPM:17.9
Homo sapiens esophagus DESI ()
LNTO29_18_2 - MTBLS385
Resolution: 75μm, 62x68

Description

330.2519 [M]+
PPM:10.3
Homo sapiens esophagus DESI ()
LNTO29_18_2 - MTBLS385
Resolution: 75μm, 62x68

Description

331.2642 [M+H]+
PPM:3.2
Homo sapiens esophagus DESI ()
LNTO29_18_2 - MTBLS385
Resolution: 75μm, 62x68

Description

353.2478 [M+Na]+
PPM:7.7
Homo sapiens esophagus DESI ()
LNTO29_18_2 - MTBLS385
Resolution: 75μm, 62x68

Description

330.2522 [M]+
PPM:9.4
Homo sapiens esophagus DESI ()
LNTO30_7_1 - MTBLS385
Resolution: 75μm, 69x68

Description

331.2644 [M+H]+
PPM:3.8
Homo sapiens esophagus DESI ()
LNTO30_7_1 - MTBLS385
Resolution: 75μm, 69x68

Description

330.252 [M]+
PPM:10
Homo sapiens esophagus DESI ()
LNTO30_7_2 - MTBLS385
Resolution: 75μm, 82x68

Description

331.2643 [M+H]+
PPM:3.5
Homo sapiens esophagus DESI ()
LNTO30_7_2 - MTBLS385
Resolution: 75μm, 82x68

Description

330.2518 [M]+
PPM:10.7
Homo sapiens colorectal adenocarcinoma DESI ()
240TopL, 210TopR, 230BottomL, 220BottomR-centroid - MTBLS176
Resolution: 50μm, 142x141

Description

331.2641 [M+H]+
PPM:2.9
Homo sapiens colorectal adenocarcinoma DESI ()
240TopL, 210TopR, 230BottomL, 220BottomR-centroid - MTBLS176
Resolution: 50μm, 142x141

Description

330.2521 [M]+
PPM:9.7
Homo sapiens colorectal adenocarcinoma DESI ()
200TopL, 170TopR, 190BottomL, 180BottomR-centroid - MTBLS176
Resolution: 50μm, 132x126

Description

331.2644 [M+H]+
PPM:3.8
Homo sapiens colorectal adenocarcinoma DESI ()
200TopL, 170TopR, 190BottomL, 180BottomR-centroid - MTBLS176
Resolution: 50μm, 132x126

Description

330.2517 [M]+
PPM:11
Homo sapiens colorectal adenocarcinoma DESI ()
160TopL,130TopR,150BottomL,140BottomR-centroid - MTBLS176
Resolution: 50μm, 142x136

Description

331.264 [M+H]+
PPM:2.6
Homo sapiens colorectal adenocarcinoma DESI ()
160TopL,130TopR,150BottomL,140BottomR-centroid - MTBLS176
Resolution: 50μm, 142x136

Description

330.252 [M]+
PPM:10
Homo sapiens colorectal adenocarcinoma DESI ()
120TopL, 90TopR, 110BottomL, 100BottomR-centroid - MTBLS176
Resolution: 50μm, 132x136

Description

331.2642 [M+H]+
PPM:3.2
Homo sapiens colorectal adenocarcinoma DESI ()
120TopL, 90TopR, 110BottomL, 100BottomR-centroid - MTBLS176
Resolution: 50μm, 132x136

Description

353.2484 [M+Na]+
PPM:9.4
Homo sapiens colorectal adenocarcinoma DESI ()
120TopL, 90TopR, 110BottomL, 100BottomR-centroid - MTBLS176
Resolution: 50μm, 132x136

Description


Docosapentaenoic acid (also known as clupanodonic acid) is an essential omega-3 fatty acid (EFA) which is prevalent in fish oils. Docosapentaenoic acid, commonly called DPA, is an intermediary between eicosapentaenoic acid (EPA, 20:5 ω-3) and docosahexaenoic acid (DHA, 22:6 ω-3). Seal oil is a rich source. There are three functions of docosapentaenoic acid. The most important is as part of phospholipids in all animal cellular membranes: a deficiency of docosapentaenoic acid leads to faulty membranes being formed. A second is in the transport and oxidation of cholesterol: clupanodonic acid tends to lower plasma cholesterol. A third function is as a precursor of prostanoids which are only formed from docosapentaenoic acid. Deficiency of this in experimental animals causes lesions mainly attributable to faulty cellular membranes: sudden failure of growth, lesions of skin and kidney and connective tissue, erythrocyte fragility, impaired fertility, uncoupling of oxidation and phosphorylation. In man pure deficiency of docosapentaenoic acid has been studied particularly in persons fed intravenously. A relative deficiency (that is, a low ratio in the body of docosapentaenoic to long-chain saturated fatty acids and isomers of docosapentaenoate) is common on Western diets and plays an important part in the causation of atherosclerosis, coronary thrombosis, multiple sclerosis, the triopathy of diabetes mellitus, hypertension and certain forms of malignant disease. Various factors affect the dietary requirement of docosapentaenoic acid. (PMID: 6469703) [HMDB]. 7Z,10Z,13Z,16Z,19Z-Docosapentaenoic acid is found in many foods, some of which are green zucchini, green bell pepper, green bean, and red bell pepper. Docosapentaenoic acid (22n-3) (also known as clupanodonic acid) is an essential omega-3 fatty acid (EFA) which is prevalent in fish oils. Docosapentaenoic acid, commonly called DPA, is an intermediary between eicosapentaenoic acid (EPA, 20:5 ω-3) and docosahexaenoic acid (DHA, 22:6 ω-3). Seal oil is a rich source of this metabolite. There are three functions of docosapentaenoic acid. Most importantly, it is a component of phospholipids found in all animal cell membranes, and a deficiency of docosapentaenoic acid leads to faulty membranes being formed. Secondly, it is involved in the transport and oxidation of cholesterol, and clupanodonic acid tends to lower plasma cholesterol. A third function is as a precursor of prostanoids which are only formed from docosapentaenoic acid. Deficiency of this in experimental animals causes lesions mainly attributable to faulty cellular membranes. Outcomes include sudden failure of growth, lesions of the skin, kidney, and connective tissue, erythrocyte fragility, impaired fertility, and the uncoupling of oxidation and phosphorylation. In humans, pure deficiency of docosapentaenoic acid has been studied particularly in persons fed intravenously. A relative deficiency (that is, a low ratio in the body of docosapentaenoic to long-chain saturated fatty acids and isomers of docosapentaenoate) is common in Western diets and plays an important part in the causation of atherosclerosis, coronary thrombosis, multiple sclerosis, the triopathy of diabetes mellitus, hypertension, and certain forms of malignant disease. Various factors affect the dietary requirement of docosapentaenoic acid (PMID: 6469703). Docosapentaenoic acid (22n-3) is a component of phospholipids found in all animal cell membranes.