PMID- 10781062 OWN - NLM STAT- MEDLINE DCOM- 20000524 LR - 20230331 IS - 0027-8424 (Print) IS - 1091-6490 (Electronic) IS - 0027-8424 (Linking) VI - 97 IP - 9 DP - 2000 Apr 25 TI - The crystal structure of palmitoyl protein thioesterase 1 and the molecular basis of infantile neuronal ceroid lipofuscinosis. PG - 4573-8 AB - Mutations in palmitoyl-protein thioesterase 1 (PPT1), a lysosomal enzyme that removes fatty acyl groups from cysteine residues in modified proteins, cause the fatal inherited neurodegenerative disorder infantile neuronal ceroid lipofuscinosis. The accumulation of undigested substrates leads to the formation of neuronal storage bodies that are associated with the clinical symptoms. Less severe forms of PPT1 deficiency have been found recently that are caused by a distinct set of PPT1 mutations, some of which retain a small amount of thioesterase activity. We have determined the crystal structure of PPT1 with and without bound palmitate by using multiwavelength anomalous diffraction phasing. The structure reveals an alpha/beta-hydrolase fold with a catalytic triad composed of Ser115-His289-Asp233 and provides insights into the structural basis for the phenotypes associated with PPT1 mutations. FAU - Bellizzi, J J 3rd AU - Bellizzi JJ 3rd AD - Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA. FAU - Widom, J AU - Widom J FAU - Kemp, C AU - Kemp C FAU - Lu, J Y AU - Lu JY FAU - Das, A K AU - Das AK FAU - Hofmann, S L AU - Hofmann SL FAU - Clardy, J AU - Clardy J LA - eng SI - PDB/1EH5 SI - PDB/1EI9 GR - R01 CA059021/CA/NCI NIH HHS/United States GR - R37 NS036867/NS/NINDS NIH HHS/United States GR - R01 NS035323/NS/NINDS NIH HHS/United States GR - NS 35323/NS/NINDS NIH HHS/United States GR - CA59021/CA/NCI NIH HHS/United States GR - P41 RR001646/RR/NCRR NIH HHS/United States GR - NS36867/NS/NINDS NIH HHS/United States GR - R01 NS036867/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - EC 3.1.2.- (Thiolester Hydrolases) RN - EC 3.1.2.14 (oleoyl-(acyl-carrier-protein) hydrolase) RN - EC 3.1.2.22 (palmitoyl-protein thioesterase) SB - IM MH - Amino Acid Sequence MH - Amino Acid Substitution MH - Crystallography, X-Ray MH - Humans MH - Infant MH - Models, Molecular MH - Molecular Sequence Data MH - Neuronal Ceroid-Lipofuscinoses/*enzymology/*genetics MH - Protein Folding MH - Protein Structure, Secondary MH - Thiolester Hydrolases/*chemistry/deficiency/genetics PMC - PMC18274 EDAT- 2000/04/26 09:00 MHDA- 2000/06/08 09:00 PMCR- 2000/10/25 CRDT- 2000/04/26 09:00 PHST- 2000/04/26 09:00 [pubmed] PHST- 2000/06/08 09:00 [medline] PHST- 2000/04/26 09:00 [entrez] PHST- 2000/10/25 00:00 [pmc-release] AID - 080508097 [pii] AID - 5080 [pii] AID - 10.1073/pnas.080508097 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2000 Apr 25;97(9):4573-8. doi: 10.1073/pnas.080508097.