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    The molecule of the day is: Proline

    The cyclic, or ring, structure of proline is unique among the amino acid constituents of protein, because it holds part of the main chain in a particular geometry, reducing its flexibility greatly. Because of the is crucial property, proline is often found in or near the loop and linker regions of proteins, so that they can be held more rigidly in a particular orientation. If the proline is replaced with a more flexible amino acid, such as glycine, the loop becomes too flexible, and the protein is non-functional. Thus we see that proline is key to the functionality of many proteins. This property is particularly exploited in some fibrous proteins in order to stiffen the fiber and create rigid geometrical constraints within the fiber.

    Proline related molecules gallery and structural archive

    other names: 147-85-3 2-Pyrrolidinecarboxylic acid C00148 L-Proline

    Canonical SMILES: C1CC(NC1)C(=O)O

    related molecule names:
    63250-32-8 C11711 Succinyl proline Succinyl-L-proline 147-85-3 2-Pyrrolidinecarboxylic acid C00148 L-Proline 344-25-2 C00763 D-Proline 4-Hydroxy-L-proline 51-35-4 C01015 L-Hydroxyproline 51-35-4 C01157 trans-4-Hydroxy-L-proline C01843 Polyproline 4-Oxoproline C01877 5-Oxoproline 5-Pyrrolidone-2-carboxylic acid 98-79-3 C01879 Pyroglutamate Pyroglutamic acid 4042-36-8 5-Oxo-D-proline C02237 D-5-Pyrrolidone-2-carboxylic acid D-Pyroglutamic acid 5-Oxo-L-proline 98-79-3 C02238 L-5-Pyrrolidone-2-carboxylic acid L-Pyroglutamic acid 2584-71-6 C03440 cis-4-Hydroxy-D-proline 618-27-9 C03441 cis-4-Hydroxy-L-proline C03633 Peptidylproline (omega=0) C03651 trans-4-Hydroxy-D-proline C03798 Peptidylproline (omega=180) C05147 trans-L-3-Hydroxyproline 10139-06-7 C05939 Linatine N-(gamma-L-Glutamyl)amino-D-proline 41563-94-4 L-Proline, 1-(2-cyanoethyl)-5-oxo- NSC15835 Proline, N-(2-cyanoethyl)-5-oxo-, L- .alpha.-Pipecolinic acid 2-Piperidinecarboxylic acid 535-75-1 Dihydrobaikiane Hexahydropicolinic acid Homoproline NSC17125 Pipecolate Pipecolic acid Pipecolinic acid 4-Carboxythiazolidine 4-Thiazolidinecarboxylic acid 4-Thiazolidinecarboxylic acid, L- 444-27-9 ATC Detoxepa Hepaldine Hepalidine Heparegene Heptaladine L-Thiazolidine-4-carboxylic acid NSC25855 Norgamem T-4CA Thiazolidine-4-carboxylic acid Thiazolidinecarboxylic acid Thioproline Tiazolidin Timonacic Usaf C-1 Usaf a-3701 WLN: T5M CSTJ EVQ WLN: T5M CSTJ EVQ -L 149-87-1 DL-Proline, 5-oxo- DL-Pyroglutamic acid NSC40887 8 (-)-(S)-Proline (-)-Proline (S)-Proline 147-85-3 2-Pyrralidinecarboxylic acid, (S)- 2-Pyrrolidinecarboxylic 9 .delta.-Hydroxyproline 4-Hydroxy-2-pyrrolidinecarboxylic acid 4-Hydroxy-L-proline 4-Hydroxyproline 4-L-Hydroxyproline 51-35-4 HYDROXYPROLINE,(L) 2 1H-Pyrrole-2-carboxylic acid, 2,5-dihydro- 3,4-Dehydroproline 3-Pyrroline-2-carboxylic acid 3220-74-4 NSC49883 Proline, 3,4-didehydro- 0 13200-83-4 L-Proline, 1-formyl- N-Formyl-L-proline NSC74450 Proline, 1-formyl-, L- 4 618-27-9 L-Allohydroxyproline L-Proline, 4-hydroxy-, cis- L-Proline, allo-hydroxy- NSC206274 Proline, 4-allo-hydroxy-, L- allo-4-Hydroxy-L-proline allo-4-Hydroxyproline allo-L-Hydroxyproline cis-4-Hydroxy-L-proline cis-4-Hydroxyproline cis-Hydroxyproline 1 13200-83-4 L-Proline, 1-formyl- N-Formyl-L-proline NSC227292 Proline, 1-formyl-, L- 1 3787-10-8 Actinomycin D, 3(A)(or 3(B))-(cis-4-chloro-L-proline)- NSC244398 4 68-95-1 Acetylproline L-Proline, 1-acetyl- N-Acetyl-L-proline NSC280718 Proline, 1-acetyl-, L- 2 138-46-5 17210-41-2 21105-75-9 24784-87-0 4-Hydroxy-2-pyrrolidinecarboxylic acid 4-Hydroxy-L-proline 51-35-4 54733-36-7 EINECS 200-091-9 HYDROXYPROLINE Hydroxy-L-proline Hydroxyproline (VAN) Hypro L-4-Hydroxyproline L-Proline, 4-hydroxy- L-Proline, 4-hydroxy-, (4R)- L-Proline, 4-hydroxy-, trans- L-Proline, 4-hydroxy-, trans- (9CI) NSC 46704 Oxaceprol Proline, 4-hydroxy- (VAN) Proline, 4-hydroxy-, L- trans-4-Hydroxyproline 0 (-)-2-Pyrrolidone-5-carboxylic acid (5S)-2-Oxopyrrolidine-5-carboxylic acid (S)-(-)-2-Pyrrolidone-5-carboxylic acid (S)-5-Oxo-2-pyrrolidinecarboxylic acid (S)-PYROGLUTAMIC ACID 16891-48-8 2-Benzothiazolesulfenemorpholide 2-Benzothiazolesulfenic acid morpholide 2-L-Pyrrolidone-5-carboxylic acid 2-Oxopyrrolidine-5-carboxylic acid 2-PYRROLIDONE-5-CARBOXYLIC ACID (L) 2-Pyrrolidinone-5-carboxylic acid 2-Pyrrolidone-5-carboxylate 2-Pyrrolidone-5-carboxylic acid 29222-42-2 35255-51-7 498-91-9 5-Carboxy-2-pyrrolidinone 5-OXO-2-PYRROLIDINECARBOXYLIC ACID 5-Oxo-L-proline 5-Oxoproline 5-Pyrrolidinone-2-carboxylic acid 6886-28-8 87430-62-4 98-79-3 AJIDEW A-100 Acide pidolique [INN-French] Acido pidolico [INN-Spanish] Acidum pidolicum [INN-Latin] EINECS 202-700-3 GLUTIMIC ACID GLUTIMINIC ACID L-2-PYRROLIDONE-5-CARBOXYLIC ACID L-5-Carboxy-2-pyrrolidinone L-5-Oxo-2-pyrrolidinecarboxylic acid L-5-Oxoproline L-GLUTIMIC ACID L-GLUTIMINIC ACID L-Glutamic acid gamma-lactam L-PYRROLIDINONECARBOXYLIC ACID L-PYRROLIDONECARBOXYLIC ACID L-Proline, 5-oxo- L-Pyroglutamic acid NSC 143034 NSC 9966 OXOPROLINE PCA PYROGLUTAMIC ACID PYRROLIDINONECARBOXYLIC ACID PYRROLIDONE-5-CARBOXYLIC ACID Pidolic acid Pidolic acid [INN] Proline, 5-oxo- Proline, 5-oxo-, (-)-(S)-Proline (-)-2-Pyrrolidinecarboxylic acid (-)-Proline (L)-PROLINE (S)-2-Pyrrolidinecarboxylic acid 147-85-3 2-Pyrrolidinecarboxylic acid, (S)- 7005-20-1 AI3-26710 CB 1707 EINECS 205-702-2 FEMA No. 3319 FEMA Number 3319 HSDB 1210 L-(-)-Proline L-Proline L-Pyrrolidine-2-carboxylic acid L-alpha-Pyrrolidinecarboxylic acid NSC 46703 PRO (IUPAC abbreviation) Prolina [Spanish] Proline Proline (VAN) Proline [USAN:INN] Proline, L- Prolinum [Latin] 19291-02-2 35041-11-3 4-Carboxythiazolidine 4-THIAZOLIDINECARBOXYLIC ACID 444-27-9 60731-25-1 Acide DL thiazolidine carboxylique-4 [French] Acide thiazolidine-4-carboxylique [French] DL-Thiaproline DL-Thiazolidinecarboxylic acid Detoxepa EINECS 207-146-6 EINECS 242-945-3 Hepalidine Heparegene NSC 25855 Norgamem T-4CA Thiaproline Thiazolidine-4-carboxylic acid Thiazolidinecarboxylic acid (VAN) Tiazolidin Timonacic Timonacic [INN] Timonacico [INN-Spanish] Timonacicum [INN-Latin] USAF A-3701 USAF C-1 2-PIPERIDINECARBOXYLIC ACID 4043-87-2 535-75-1 69470-51-5 Acide pipecolique [French] Acide piperidine-carboxylique-2 [French] Dihydrobaikiane EINECS 208-616-3 EINECS 223-737-1 Hexahydropicolinic acid Homoproline NSC 17125 Pipecolate Pipecolic acid Pipecolinic acid Piperolinic acid 609-36-9 EINECS 210-189-3 NSC 97923 PROLINE Proline DL-form 1-NITROSO-L-PROLINE 37114-16-2 39723-42-7 68374-64-1 7519-36-0 86941-92-6 89299-44-5 BRN 0473006 L-Proline, 1-nitroso- (9CI) L-Proline, nitroso- N-Nitroso-L-proline NO-Pro NPRO NSC 109545 Nitrosoproline Proline, 1-nitroso-, L- (8CI) Proline, N-nitroso-, L- n-Nitrosoproline (1-24)alpha-ACTH 16960-16-0 17008-05-8 35-33-6 37341-02-9 52051-40-8 ACTHalpha1-24 Acth 1-24 Acth(sup 1-24) Acth-Z Acthalpha(1-24) Actholain Adrenocorticotropic hormone 1-24 BRN 0940671 Ba 30920 Ba 36716 COSYNTROPIN Corticotropin-(1-24) Cortrophin S Cortrosinta Cortrosyn Cosyntropin [USAN] EINECS 241-031-1 HSDB 3307 L-Seryl-L-tyrosyl-L-seryl-L-methionyl-L-glutamyl-L-histidyl-L-phenylalanyl-L-arginyl-L-tryptophylglycyl-L-lysyl-L-prolyl-L-valylglycyl-L-lysyl-L-lysyl-L-arginyl-L-arginyl-L-prolyl-L-valyl-L-lysyl-L-valyl-L-tyrosyl-L-proline Nuvacthen depot Porcine ACTH (1-24) Synacthen Synacthene-retard Tetracosactid Tetracosactida [INN-Spanish] Tetracosactide Tetracosactidum [INN-Latin] Tetracosactrin Tetracosapeptide alpha(sup 1-24)-Acth alpha(sup 1-24)-Corticotropin alpha1-24-Corticotropin beta(1-24)-Tetracosactide beta(sup 1-24)-Corticotropin beta(sup 1-24)-Tetracosactide beta-1,24-Corticotrophin beta-Corticotrophin-(1-24)-tetracosapeptide 2365-02-2 22365-17-9 24305-27-9 39422-15-6 5-Oxo-L-prolyl-L-histidyl-L-prolinamide 53935-32-3 77666-61-6 9015-91-2 Abbott 38579 CCRIS 2593 EINECS 246-143-4 FDA 1725 L-Prolinamide, 5-oxo-L-prolyl-L-histidyl- L-Pyroglutamyl-L-histidinyl-L-prolinamide L-Pyroglutamyl-L-histidyl-L-prolineamide Lopremone Protirelin Protirelin [USAN:BAN:INN:JAN] Protirelina [INN-Spanish] Protireline [INN-French] Protirelinum [INN-Latin] Rifathyroin Ro 8-6270/9 Synthetic TRH Synthetic tsh-releasing factor Synthetic tsh-releasing hormone TRH TSH-releasing factor TSH-releasing hormone Thypinone Thyroid releasing hormone Thyroliberin Thyrothropin relasing hormone Thyrotropic releasing hormone Thyrotropic-releasing factor Thyrotropin releasing hormone Thyrotropin-releasing factor Thyrotropin-releasing hormone 1-De(5-oxo-L-proline)-2-de-L-glutamine-5-L-methioninecaerulein 25126-32-3 Caerulein, 1-de(5-oxo-L-proline)-2-de-L-glutamine-5-L-methionine- EINECS 246-639-0 Kinevac L-Aspartyl-L-tyrosyl-L-methionylglycyl-L-tryptophyl-L-methionyl-L-aspartylphenyl-L-alaninamide hydrogen sulfate (ester) L-alpha-Aspartyl-O-sulfo-L-tyrosyl-L-methionylglycyl-L-tryptophyl-L-methionyl-L-alpha-aspartyl-L-phenylalaninamide SQ 19844 Sincalida [INN-Spanish] Sincalide Sincalide [USAN:BAN:INN] Sincalidum [INN-Latin] 35115-60-7 5-Oxo-L-prolyl-L-tryptophyl-L-prolyl-L-arginyl-L-prolyl-L-glutaminyl-L-isoleucyl-L-prolyl-L-proline Bradykinin potentiator B, 2-L-tryptophan-3-de-L-leucine-4-de-L-proline-8-L-glutamine- SQ 20881 TEPROTIDE Teprotide [USAN:BAN:INN] Teprotido [INN-Spanish] Teprotidum [INN-Latin]

    pdb file:3395.pdb
    CAS: 57-48-7

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