Citric-acid

Citric acid is a tricarboxylic acid that is propane-1,2,3-tricarboxylic acid bearing a hydroxy substituent at position 2. It is an important metabolite in the pathway of all aerobic organisms. It has a role as a food acidity regulator, a chelator, an antimicrobial agent and a fundamental metabolite. It is a conjugate acid of a citrate(1-) and a citrate anion. Anhydrous Citric Acid is found in citrus fruits. Citric acid is used as an excipient in pharmaceutical preparations due to its antioxidant properties. It maintains stability of active ingredients and is used as a preservative. It is also used as an acidulant to control pH and acts as an anticoagulant by chelating calcium in blood.

General

Type :

Chemical_Nomenclature : 2-hydroxypropane-1,2,3-tricarboxylic acid

Canonical SMILES : C(C(=O)O)C(CC(=O)O)(C(=O)O)O

InChI : InChI=1S\/C6H8O7\/c7-3(8)1-6(13,5(11)12)2-4(9)10\/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)

InChIKey : KRKNYBCHXYNGOX-UHFFFAOYSA-N

Other name(s) : DB04272  ||  SCHEMBL7206089  ||  CH2COOH-C(OH)COOH-CH2COOH  ||  citric acid  ||  Citric acid, anhydrous  ||  Anhydrous citric acid  ||  CHEBI:30769  ||  CHEMBL1261


MW : 192.12

Formula : C6H8O7

CAS_number : 77-92-9

PubChem : 311,    88113319

UniChem : KRKNYBCHXYNGOX-UHFFFAOYSA-N

Target

Families : Citric-acid ligand of proteins in family
Polyesterase-lipase-cutinase

Structure :
7E30

Protein :
9firm-PHL7

References (1)

Title : Multiple Substrate Binding Mode-Guided Engineering of a Thermophilic PET Hydrolase - Pfaff_2022_ACS.Catalysis_12_9790
Author(s) : Pfaff L , Gao J , Li Z , Jackering A , Weber G , Mican J , Chen Y , Dong W , Han X , Feiler CG , Ao YF , Badenhorst CPS , Bednar D , Palm GJ , Lammers M , Damborsky J , Strodel B , Liu W , Bornscheuer UT , Wei R
Ref : ACS Catal , 12 :9790 , 2022
Abstract :
PubMedSearch : Pfaff_2022_ACS.Catalysis_12_9790
PubMedID: 35966606
Gene_locus related to this paper: 9firm-PHL7