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Identification
HMDB Protein ID HMDBP00854
Secondary Accession Numbers
  • 6135
  • HMDBP03924
Name Delta-1-pyrroline-5-carboxylate synthase
Synonyms
  1. Aldehyde dehydrogenase family 18 member A1
  2. GK
  3. GPR
  4. Gamma-glutamyl kinase
  5. Gamma-glutamyl phosphate reductase
  6. Glutamate 5-kinase
  7. Glutamate-5-semialdehyde dehydrogenase
  8. Glutamyl-gamma-semialdehyde dehydrogenase
  9. P5CS
Gene Name ALDH18A1
Protein Type Enzyme
Biological Properties
General Function Involved in oxidoreductase activity
Specific Function Bifunctional enzyme that converts glutamate to glutamate 5-semialdehyde, an intermediate in the biosynthesis of proline, ornithine and arginine.
Pathways
  • Arginine and proline metabolism
  • L-proline biosynthesis
Reactions
Adenosine triphosphate + L-Glutamic acid → ADP + L-Glutamic acid 5-phosphate details
L-Glutamic gamma-semialdehyde + Phosphate + NADP → L-Glutamic acid 5-phosphate + NADPH details
Adenosine triphosphate + L-Glutamic acid → ADP + L-Glutamic acid 5-phosphate details
L-Glutamic gamma-semialdehyde + Phosphate + NADP → L-Glutamic acid 5-phosphate + NADPH + Hydrogen Ion details
GO Classification
Biological Process
cellular nitrogen compound metabolic process
L-proline biosynthetic process
ornithine biosynthetic process
glutamate metabolic process
citrulline biosynthetic process
proline biosynthetic process
Cellular Component
mitochondrial inner membrane
Component
cell part
intracellular part
cytoplasm
Function
catalytic activity
transferase activity
transferase activity, transferring phosphorus-containing groups
oxidoreductase activity
oxidoreductase activity, acting on the aldehyde or oxo group of donors
oxidoreductase activity, acting on the aldehyde or oxo group of donors, nad or nadp as acceptor
phosphotransferase activity, carboxyl group as acceptor
glutamate 5-kinase activity
glutamate-5-semialdehyde dehydrogenase activity
Molecular Function
ATP binding
glutamate 5-kinase activity
glutamate-5-semialdehyde dehydrogenase activity
Process
cellular amino acid biosynthetic process
metabolic process
cellular metabolic process
glutamine family amino acid metabolic process
proline metabolic process
proline biosynthetic process
oxidation reduction
cellular amino acid and derivative metabolic process
cellular amino acid metabolic process
Cellular Location
  1. Mitochondrion inner membrane
Gene Properties
Chromosome Location 10
Locus 10q24.3
SNPs ALDH18A1
Gene Sequence
>2388 bp
ATGTTGAGTCAAGTTTACCGCTGTGGGTTCCAGCCCTTCAACCAACATCTTCTGCCCTGG
GTCAAGTGTACAACCGTCTTCAGATCTCATTGTATCCAGCCTTCAGTCATCAGACATGTT
CGTTCTTGGAGCAACATCCCGTTTATCACTGTACCCCTCAGTCGTACACATGGCAAGTCC
TTCGCCCACCGCAGTGAGCTGAAGCATGCCAAGAGAATCGTGGTGAAGCTCGGCAGTGCC
GTGGTGACCCGAGGGGATGAATGTGGCCTGGCCCTGGGGCGCTTGGCATCTATTGTTGAG
CAGGTATCAGTGCTGCAGAATCAGGGCAGAGAGATGATGCTGGTGACCAGTGGAGCCGTA
GCCTTTGGCAAACAAACGTTGCGCCATGAGATCCTTCTGTCTCAGAGCGTGCGGCAGGCC
CTCCACTCGGGGCAGAACCAGCTGAAAGAAATGGCAATTCCAGTCTTAGAGGCACGAGCC
TGTGCAGCTGCCGGACAGAGTGGGCTGATGGCCTTGTATGAGGCTATGTTTACCCAGTAC
AGCATCTGTGCTGCCCAGATTTTGGTGACCAATTTGGATTTCCATGATGAGCAGAAGCGC
CGGAACCTCAATGGAACACTTCATGAACTCCTTAGAATGAACATTGTCCCCATTGTCAAC
ACAAATGATGCTGTTGTCCCCCCAGCTGAGCCCAACAGTGACCTGCAGGGGGTAAATGTT
ATTAGTGTTAAAGATAATGATAGCCTGGCTGCCCGACTGGCTGTGGAAATGAAAACTGAT
CTCTTGATTGTCCTTCCAGATGTAGAAGGCCTTTTTGACAGCCCCCCAGGTTCAGATGAT
GCAAAGCTTATTGATATATTTTATCCCGGAGATCAGCAGTCTGTGACATTTGGACCCAAG
TCTAGAGTGGGAAATGGGTGCATGGAAGCCAAGGTGAAAAGCACCCTCTGGGCTTTGCAA
GGTGGCACTTCTGTTGTTATTGCCAATGGAACCCACCCAAAGGTGTCTGGGCACGTCATC
ACAGACATTGTGGAGGGGAAGAAAGTTGGTACCTTCTTTTCAGAAGTAAAGCCTGCAGGC
CCTACTGTTGAGCAGCAGGGAGAAATGGCGCGATCTGGAGGAAGGATGTTGGCCACCTTG
GAACCTGAGCAGAGAGCAGAAATTATCCATCATCTGGCTGATCTGTTGACGGACCAGCGT
GATGAGATCCTGTTAGCCAACAAAAAAGACTTGGAGGAGGCAGAGGGGAGACTTGCAGCT
CCTCTGCTGAAACGTTTAAGCCTCTCCACATCCAAATTGAACAGCCTGGCCATCGGTCTG
CGACAGATCGCAGCCTCCTCCCAGGACAGCGTGGGACGTGTTTTGCGCCGCACCCGAATC
GCCAAAAACTTGGAACTGGAACAAGTGACTGTCCCAATTGGAGTTCTGCTGGTGATCTTT
GAATCTCGTCCTGACTGTCCTACCCCAGGTGGCAGCTTTGCTATCGCAAGTGGCAATGGC
TTGTTACTCAAAGGAGGGAAGGAGGCTGCACACAGCAACCGGATTCTCCACCTCCTGACC
CAGGAGGCTCTCTCAATCCATGGAGTCAAGGAGGCCGTGCAACTGGTGAATACCAGAGAA
GAAGTTGAAGATCTTTGCCGCCTAGACAAAATGATAGATCTGATCATTCCACGTGGCTCT
TCCCAGCTGGTCAGAGACATCCAGAAAGCTGCTAAGGGGATTCCAGTGATGGGGCACAGC
GAAGGGATCTGTCACATGTATGTGGATTCCGAGGCCAGTGTTGATAAGGTCACCAGGCTA
GTCAGAGACTCTAAATGTGAATATCCAGCTGCCTGTAATGCTTTGGAGACTTTGTTAATC
CACCGGGATCTGCTCAGGACACCATTATTTGACCAGATCATTGATATGCTGAGAGTGGAA
CAGGTAAAAATTCATGCAGGCCCCAAATTTGCCTCCTATCTGACCTTCAGCCCCTCCGAA
GTGAAGTCACTCCGAACTGAGTATGGGGACCTGGAATTATGCATTGAAGTAGTGGACAAC
GTTCAGGATGCCATTGACCACATCCACAAGTATGGCAGCTCCCACACGGATGTCATCGTC
ACAGAGGACGAAAACACAGCGGAGTTCTTCCTGCAGCACGTAGACAGTGCCTGTGTGTTC
TGGAATGCCAGCACTCGCTTTTCTGATGGTTACCGCTTTGGACTGGGAGCTGAAGTGGGA
ATCAGTACATCGAGAATCCACGCCCGGGGACCAGTAGGACTTGAGGGACTGCTTACTACT
AAGTGGCTGCTGCGAGGGAAGGACCACGTGGTCTCAGATTTCTCAGAGCATGGAAGTTTA
AAATATCTTCATGAGAACCTCCCTATTCCTCAGAGAAACACCAACTGA
Protein Properties
Number of Residues 795
Molecular Weight 87088.29
Theoretical pI 7.127
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>Delta-1-pyrroline-5-carboxylate synthase
MLSQVYRCGFQPFNQHLLPWVKCTTVFRSHCIQPSVIRHVRSWSNIPFITVPLSRTHGKS
FAHRSELKHAKRIVVKLGSAVVTRGDECGLALGRLASIVEQVSVLQNQGREMMLVTSGAV
AFGKQRLRHEILLSQSVRQALHSGQNQLKEMAIPVLEARACAAAGQSGLMALYEAMFTQY
SICAAQILVTNLDFHDEQKRRNLNGTLHELLRMNIVPIVNTNDAVVPPAEPNSDLQGVNV
ISVKDNDSLAARLAVEMKTDLLIVLSDVEGLFDSPPGSDDAKLIDIFYPGDQQSVTFGTK
SRVGMGGMEAKVKAALWALQGGTSVVIANGTHPKVSGHVITDIVEGKKVGTFFSEVKPAG
PTVEQQGEMARSGGRMLATLEPEQRAEIIHHLADLLTDQRDEILLANKKDLEEAEGRLAA
PLLKRLSLSTSKLNSLAIGLRQIAASSQDSVGRVLRRTRIAKNLELEQVTVPIGVLLVIF
ESRPDCLPQVAALAIASGNGLLLKGGKEAAHSNRILHLLTQEALSIHGVKEAVQLVNTRE
EVEDLCRLDKMIDLIIPRGSSQLVRDIQKAAKGIPVMGHSEGICHMYVDSEASVDKVTRL
VRDSKCEYPAACNALETLLIHRDLLRTPLFDQIIDMLRVEQVKIHAGPKFASYLTFSPSE
VKSLRTEYGDLELCIEVVDNVQDAIDHIHKYGSSHTDVIVTEDENTAEFFLQHVDSACVF
WNASTRFSDGYRFGLGAEVGISTSRIHARGPVGLEGLLTTKWLLRGKDHVVSDFSEHGSL
KYLHENLPIPQRNTN
GenBank ID Protein 1304314
UniProtKB/Swiss-Prot ID P54886
UniProtKB/Swiss-Prot Entry Name P5CS_HUMAN
PDB IDs
GenBank Gene ID X94453
GeneCard ID ALDH18A1
GenAtlas ID ALDH18A1
HGNC ID HGNC:9722
References
General References
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  3. Deloukas P, Earthrowl ME, Grafham DV, Rubenfield M, French L, Steward CA, Sims SK, Jones MC, Searle S, Scott C, Howe K, Hunt SE, Andrews TD, Gilbert JG, Swarbreck D, Ashurst JL, Taylor A, Battles J, Bird CP, Ainscough R, Almeida JP, Ashwell RI, Ambrose KD, Babbage AK, Bagguley CL, Bailey J, Banerjee R, Bates K, Beasley H, Bray-Allen S, Brown AJ, Brown JY, Burford DC, Burrill W, Burton J, Cahill P, Camire D, Carter NP, Chapman JC, Clark SY, Clarke G, Clee CM, Clegg S, Corby N, Coulson A, Dhami P, Dutta I, Dunn M, Faulkner L, Frankish A, Frankland JA, Garner P, Garnett J, Gribble S, Griffiths C, Grocock R, Gustafson E, Hammond S, Harley JL, Hart E, Heath PD, Ho TP, Hopkins B, Horne J, Howden PJ, Huckle E, Hynds C, Johnson C, Johnson D, Kana A, Kay M, Kimberley AM, Kershaw JK, Kokkinaki M, Laird GK, Lawlor S, Lee HM, Leongamornlert DA, Laird G, Lloyd C, Lloyd DM, Loveland J, Lovell J, McLaren S, McLay KE, McMurray A, Mashreghi-Mohammadi M, Matthews L, Milne S, Nickerson T, Nguyen M, Overton-Larty E, Palmer SA, Pearce AV, Peck AI, Pelan S, Phillimore B, Porter K, Rice CM, Rogosin A, Ross MT, Sarafidou T, Sehra HK, Shownkeen R, Skuce CD, Smith M, Standring L, Sycamore N, Tester J, Thorpe A, Torcasso W, Tracey A, Tromans A, Tsolas J, Wall M, Walsh J, Wang H, Weinstock K, West AP, Willey DL, Whitehead SL, Wilming L, Wray PW, Young L, Chen Y, Lovering RC, Moschonas NK, Siebert R, Fechtel K, Bentley D, Durbin R, Hubbard T, Doucette-Stamm L, Beck S, Smith DR, Rogers J: The DNA sequence and comparative analysis of human chromosome 10. Nature. 2004 May 27;429(6990):375-81. [PubMed:15164054 ]
  4. Aral B, Schlenzig JS, Liu G, Kamoun P: Database cloning human delta 1-pyrroline-5-carboxylate synthetase (P5CS) cDNA: a bifunctional enzyme catalyzing the first 2 steps in proline biosynthesis. C R Acad Sci III. 1996 Mar;319(3):171-8. [PubMed:8761662 ]
  5. Hu CA, Lin WW, Obie C, Valle D: Molecular enzymology of mammalian Delta1-pyrroline-5-carboxylate synthase. Alternative splice donor utilization generates isoforms with different sensitivity to ornithine inhibition. J Biol Chem. 1999 Mar 5;274(10):6754-62. [PubMed:10037775 ]
  6. Baumgartner MR, Hu CA, Almashanu S, Steel G, Obie C, Aral B, Rabier D, Kamoun P, Saudubray JM, Valle D: Hyperammonemia with reduced ornithine, citrulline, arginine and proline: a new inborn error caused by a mutation in the gene encoding delta(1)-pyrroline-5-carboxylate synthase. Hum Mol Genet. 2000 Nov 22;9(19):2853-8. [PubMed:11092761 ]
  7. Bicknell LS, Pitt J, Aftimos S, Ramadas R, Maw MA, Robertson SP: A missense mutation in ALDH18A1, encoding Delta1-pyrroline-5-carboxylate synthase (P5CS), causes an autosomal recessive neurocutaneous syndrome. Eur J Hum Genet. 2008 Oct;16(10):1176-86. doi: 10.1038/ejhg.2008.91. Epub 2008 May 14. [PubMed:18478038 ]