|Gene:||pgk||Accession Numbers: EG10703 (EcoCyc), b2926, ECK2922|
Phosphoglycerate kinase encoded by gene pgk catalyzes the reversible phosphorylation of 3-phospho-D-glycerate to 1,3-bisphospho-D-glycerate during glycolysis and gluconeogenesis in E. coli. In the glycolytic reaction direction the enzyme catalyzes the transfer of a phosphoryl group from 1,3-bisphospho-D-glycerate to ADP, forming ATP and 3-phospho-D-glycerate.
Pgk cDNAs from a variety of organisms have been isolated. Their protein products are all monomers of similar size, with similar tertiary structures [Fifis78, Watson90]. The amino acid sequence of the E. coli enzyme is highly homologous to that of eukaryotes [Alefounder89a]. Part of gene pgk showed similarity to an ORF found in the enterobacterial fish pathogen Edwardsiella ictaluri [Moore02a]. The gene order around pgk in the Enterobacteriaceae differs from that in most other bacteria and transcriptional regulation of the E. coli epd-pgk-fbaA region has been studied [Bardey05].
In earlier work, phosphoglycerate kinase was purified to near homogeneity from cell extracts of E. coli K-12. When assayed in the reverse direction its activity was dependent upon the presence of ATP and 3-phospho-D-glycerate [DAlessio71, DAlession75, Fifis78]. A pgk mutant cannot grow on sugars or gluconeogenic substrates [Irani74, Thomson79]. A mapping study using transductional crosses determined a gene order in the pgk region [Irani76]. Pgk synthesis was shown to be induced over 10-fold during the transition from exponential to stationary growth phase. The position of the protein on two-dimensional gels indicated that it is one of the proteins induced by anaerobiosis [Nellemann89].
The crystal structure of E. coli K-12 Pgk has been determined at 2.40 Å resolution and compared with that of yeast. Both enzymes have very similar tertiary structures and measured global stabilities. Although E. coli Pgk shows 39% homology and 56% similarity with that of yeast, the E. coli enzyme is more resistant to proteolysis. Pgk consists of N and C domains that are connected by an α-helical linker. Biophyscal studies suggested that cooperativity between the N and C domains of E. coli Pgk results in more rigidity and is the basis of the increased stability [Young07]. A novel use of the N-domain of E. coli Pgk as a fusion partner to express heterologous proteins that are prone to aggregation has also been reported [Song12].
A series of vectors inducibly expressing paired-terminus antisense RNAs was constructed to silence central carbon metabolism in host E. coli K-12 MG1655. A vector that silenced pgk at 79% efficacy did not cause severe growth inhibition, possibly due to residual activity [Nakashima14].
Co-overexpression of several genes including pgk in an engineered E. coli strain was a strategy for improving polyhydroxybutyrate production in an E. coli host [Zhang14].
Gene Citations: [Charpentier98]
|Map Position: [3,069,481 <- 3,070,644] (66.16 centisomes, 238°)||Length: 1164 bp / 387 aa|
Molecular Weight of Polypeptide: 41.118 kD (from nucleotide sequence), 43.7 kD (experimental) [DAlessio71 ]
Unification Links: ASAP:ABE-0009605 , CGSC:408 , DIP:DIP-36163N , EchoBASE:EB0697 , EcoGene:EG10703 , EcoliWiki:b2926 , Mint:MINT-1229247 , OU-Microarray:b2926 , PortEco:pgk , PR:PRO_000023523 , Pride:P0A799 , Protein Model Portal:P0A799 , RefSeq:NP_417401 , RegulonDB:EG10703 , SMR:P0A799 , String:511145.b2926 , Swiss-Model:P0A799 , UniProt:P0A799
Relationship Links: InterPro:IN-FAMILY:IPR001576 , InterPro:IN-FAMILY:IPR015824 , InterPro:IN-FAMILY:IPR015901 , InterPro:IN-FAMILY:IPR015911 , Panther:IN-FAMILY:PTHR11406 , PDB:Structure:1ZMR , Pfam:IN-FAMILY:PF00162 , Prints:IN-FAMILY:PR00477 , Prosite:IN-FAMILY:PS00111
|Biological Process:||GO:0006096 - glycolytic process
[UniProtGOA12, UniProtGOA11a, GOA06, GOA01a, Irani74, DAlessio71]
GO:0016310 - phosphorylation [UniProtGOA11a]
|Molecular Function:||GO:0004618 - phosphoglycerate kinase activity
[GOA06, GOA01, GOA01a, DAlessio71]
GO:0000166 - nucleotide binding [UniProtGOA11a]
GO:0005524 - ATP binding [UniProtGOA11a]
GO:0016301 - kinase activity [UniProtGOA11a]
GO:0016740 - transferase activity [UniProtGOA11a]
|Cellular Component:||GO:0005829 - cytosol
GO:0005737 - cytoplasm [UniProtGOA11, UniProtGOA11a, GOA06]
|MultiFun Terms:||metabolism → central intermediary metabolism|
|metabolism → energy metabolism, carbon → glycolysis|
|Growth Medium||Growth?||T (°C)||O2||pH||Osm/L||Growth Observations|
|LB Lennox||No||37||Aerobic||7||No [Baba06, Comment 1]|
Enzymatic reaction of: phosphoglycerate kinase
Synonyms: 3-phosphoglycerate kinase, Glycerate 3-P kinase, 2,3-diphospho-D-glycerate, 2-phospho-D-glycerate phosphotransferase
EC Number: 184.108.40.206
The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the direction in which it was curated.
This reaction is reversible. [DAlessio71]
In Pathways: superpathway of hexitol degradation (bacteria) , superpathway of glycolysis and Entner-Doudoroff , superpathway of glycolysis, pyruvate dehydrogenase, TCA, and glyoxylate bypass , gluconeogenesis I , glycolysis II (from fructose 6-phosphate) , glycolysis I (from glucose 6-phosphate)
MgATP is the phosphate donor in for 3-phospho-D-glycerate [Fifis78].
|Chain||2 -> 387|
|Protein-Segment||21 -> 23|
|Protein-Segment||59 -> 62|
|Nucleotide-Phosphate-Binding-Region||340 -> 343|
10/20/97 Gene b2926 from Blattner lab Genbank (v. M52) entry merged into EcoCyc gene EG10703; confirmed by SwissProt match.
Alefounder89a: Alefounder PR, Perham RN (1989). "Identification, molecular cloning and sequence analysis of a gene cluster encoding the class II fructose 1,6-bisphosphate aldolase, 3-phosphoglycerate kinase and a putative second glyceraldehyde 3-phosphate dehydrogenase of Escherichia coli." Mol Microbiol 3(6);723-32. PMID: 2546007
Baba06: Baba T, Ara T, Hasegawa M, Takai Y, Okumura Y, Baba M, Datsenko KA, Tomita M, Wanner BL, Mori H (2006). "Construction of Escherichia coli K-12 in-frame, single-gene knockout mutants: the Keio collection." Mol Syst Biol 2;2006.0008. PMID: 16738554
Bardey05: Bardey V, Vallet C, Robas N, Charpentier B, Thouvenot B, Mougin A, Hajnsdorf E, Regnier P, Springer M, Branlant C (2005). "Characterization of the molecular mechanisms involved in the differential production of erythrose-4-phosphate dehydrogenase, 3-phosphoglycerate kinase and class II fructose-1,6-bisphosphate aldolase in Escherichia coli." Mol Microbiol 57(5);1265-87. PMID: 16102000
Charpentier98: Charpentier B, Bardey V, Robas N, Branlant C (1998). "The EIIGlc protein is involved in glucose-mediated activation of Escherichia coli gapA and gapB-pgk transcription." J Bacteriol 1998;180(24);6476-83. PMID: 9851989
DAlessio71: D'Alessio G, Josse J (1971). "Glyceraldehyde phosphate dehydrogenase, phosphoglycerate kinase, and phosphoglyceromutase of Escherichia coli. Simultaneous purification and physical properties." J Biol Chem 1971;246(13);4319-25. PMID: 4932978
DiazMejia09: Diaz-Mejia JJ, Babu M, Emili A (2009). "Computational and experimental approaches to chart the Escherichia coli cell-envelope-associated proteome and interactome." FEMS Microbiol Rev 33(1);66-97. PMID: 19054114
Link97: Link AJ, Robison K, Church GM (1997). "Comparing the predicted and observed properties of proteins encoded in the genome of Escherichia coli K-12." Electrophoresis 18(8);1259-313. PMID: 9298646
Moore02a: Moore MM, Fernandez DL, Thune RL (2002). "Cloning and characterization of Edwardsiella ictaluri proteins expressed and recognized by the channel catfish Ictalurus punctatus immune response during infection." Dis Aquat Organ 52(2);93-107. PMID: 12542086
Nakashima14: Nakashima N, Ohno S, Yoshikawa K, Shimizu H, Tamura T (2014). "A vector library for silencing central carbon metabolism genes with antisense RNAs in Escherichia coli." Appl Environ Microbiol 80(2);564-73. PMID: 24212579
Song12: Song JA, Lee DS, Park JS, Han KY, Lee J (2012). "The N-domain of Escherichia coli phosphoglycerate kinase is a novel fusion partner to express aggregation-prone heterologous proteins." Biotechnol Bioeng 109(2);325-35. PMID: 21882174
Thomson79: Thomson J, Gerstenberger PD, Goldberg DE, Gociar E, Orozco de Silva A, Fraenkel DG (1979). "ColE1 hybrid plasmids for Escherichia coli genes of glycolysis and the hexose monophosphate shunt." J Bacteriol 1979;137(1);502-6. PMID: 368027
Watson90: Watson HC, Littlechild JA (1990). "Isoenzymes of phosphoglycerate kinase: evolutionary conservation of the structure of this glycolytic enzyme." Biochem Soc Trans 1990;18(2);187-90. PMID: 2379683
Wilkins98: Wilkins MR, Gasteiger E, Tonella L, Ou K, Tyler M, Sanchez JC, Gooley AA, Walsh BJ, Bairoch A, Appel RD, Williams KL, Hochstrasser DF (1998). "Protein identification with N and C-terminal sequence tags in proteome projects." J Mol Biol 278(3);599-608. PMID: 9600841
Young07: Young TA, Skordalakes E, Marqusee S (2007). "Comparison of proteolytic susceptibility in phosphoglycerate kinases from yeast and E. coli: modulation of conformational ensembles without altering structure or stability." J Mol Biol 368(5);1438-47. PMID: 17397866
Zhang09: Zhang J, Sprung R, Pei J, Tan X, Kim S, Zhu H, Liu CF, Grishin NV, Zhao Y (2009). "Lysine acetylation is a highly abundant and evolutionarily conserved modification in Escherichia coli." Mol Cell Proteomics 8(2);215-25. PMID: 18723842
Zhang14: Zhang Y, Lin Z, Liu Q, Li Y, Wang Z, Ma H, Chen T, Zhao X (2014). "Engineering of Serine-Deamination pathway, Entner-Doudoroff pathway and pyruvate dehydrogenase complex to improve poly(3-hydroxybutyrate) production in Escherichia coli." Microb Cell Fact 13(1);172. PMID: 25510247
Olvera09: Olvera L, Mendoza-Vargas A, Flores N, Olvera M, Sigala JC, Gosset G, Morett E, Bolivar F (2009). "Transcription analysis of central metabolism genes in Escherichia coli. Possible roles of sigma38 in their expression, as a response to carbon limitation." PLoS One 4(10);e7466. PMID: 19838295
Ramseier95: Ramseier TM, Bledig S, Michotey V, Feghali R, Saier MH (1995). "The global regulatory protein FruR modulates the direction of carbon flow in Escherichia coli." Mol Microbiol 1995;16(6);1157-69. PMID: 8577250
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