1DQA: Protein

Complex of the catalytic portion of human hmg-CoA reductase with hmg, CoA, and NADP+. Determined by X-ray diffraction at 2.0 Å resolution. Released 8 Mar 2000.

Method
X-ray diffraction
Resolution
2.0 Å
Organism
Homo sapiens
Chains
4
Atoms
12,909
Mol. weight
206.78 kDa
Ligands
COA, MAH, NAP
Released
8 Mar 2000

Explore 1DQA in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1DQA contains 85 α-helices and 60 β-strands across 4 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 22 helices, 15 β-strands

ElementResiduesLengthSheet
α-helix464-47310
α-helix478-4803
α-helix481-4844
α-helix488-50013
α-helix508-5114
α-helix519-5224
β-strand530-546171
β-strand549-55681
α-helix562-57514
β-strand57911
β-strand580-58782
β-strand588-59033
β-strand593-59533
α-helix599-60911
α-helix612-62312
β-strand629-639113
β-strand642-651103
β-strand65414
α-helix657-67418
β-strand679-68243
α-helix695-7006
β-strand703-712102
α-helix714-7196
α-helix725-7317
α-helix732-7398
α-helix740-7423
β-strand748-74922
α-helix753-76311
α-helix768-7703
α-helix771-7744
β-strand777-78482
β-strand790-800112
β-strand80514
α-helix807-8104
α-helix812-82110
α-helix833-85927
α-helix862-8698
Chain B: 20 helices, 15 β-strands
ElementResiduesLengthSheet
α-helix464-4729
α-helix478-4803
α-helix488-50013
α-helix506-5116
α-helix519-5224
β-strand530-546171
β-strand549-55681
α-helix562-57514
β-strand57911
β-strand580-58785
β-strand588-59036
β-strand593-59536
α-helix599-60911
α-helix612-62312
β-strand629-639116
β-strand642-651106
β-strand65417
α-helix657-67418
β-strand679-68246
α-helix695-7006
β-strand703-712105
α-helix714-7196
α-helix725-7317
α-helix732-7376
α-helix738-7425
β-strand748-74925
α-helix753-76311
α-helix768-7703
α-helix771-7744
β-strand777-78485
β-strand790-800115
β-strand80517
α-helix807-8104
α-helix812-8209
α-helix833-85927
Chain C: 22 helices, 15 β-strands
ElementResiduesLengthSheet
α-helix469-4746
α-helix478-4803
α-helix481-4844
α-helix488-50215
α-helix506-5116
α-helix519-5224
β-strand530-546178
β-strand549-55688
α-helix562-57514
β-strand57918
β-strand580-58789
β-strand588-590310
β-strand593-595310
α-helix599-60911
α-helix612-62312
β-strand629-6391110
β-strand642-6511010
β-strand654111
α-helix657-67418
β-strand679-682410
α-helix695-7006
β-strand703-712109
α-helix714-7196
α-helix725-7317
α-helix732-7398
α-helix740-7423
β-strand748-74929
α-helix753-76311
α-helix768-7703
α-helix771-7744
β-strand777-78489
β-strand790-800119
β-strand805111
α-helix807-8104
α-helix812-8209
α-helix833-85927
α-helix862-8698
Chain D: 21 helices, 15 β-strands
ElementResiduesLengthSheet
α-helix478-4803
α-helix481-4844
α-helix488-50013
α-helix506-5116
α-helix519-5224
β-strand530-546178
β-strand549-55688
α-helix562-57514
β-strand57918
β-strand580-587812
β-strand588-590313
β-strand593-595313
α-helix599-60911
α-helix612-62312
β-strand629-6391113
β-strand642-6511013
β-strand654114
α-helix657-67418
β-strand679-682413
α-helix695-7006
β-strand703-7121012
α-helix714-7196
α-helix725-7317
α-helix732-7398
α-helix740-7423
β-strand748-749212
α-helix753-76311
α-helix768-7703
α-helix771-7744
β-strand777-784812
β-strand790-8001112
β-strand805114
α-helix807-8104
α-helix812-8209
α-helix833-85927
α-helix862-8698

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Protein (hmg-CoA reductase)A, B, C, Dprotein467Homo sapiensP04035 (AlphaFold model)
Sequence of entity 1 (A, B, C, D), FASTA
>1DQA_1 PROTEIN (HMG-COA REDUCTASE) (chains A, B, C, D)
GAMASSVLVTQEPEIELPREPRPNEECLQILGNAEKGAKFLSDAEIIQLVNAKHIPAYKL
ETLIETHERGVSIRRQLLSKKLSEPSSLQYLPYRDYNYSLVMGACCENVIGYMPIPVGVA
GPLCLDEKEFQVPMATTEGCLVASTNRGCRAIGLGGGASSRVLADGMTRGPVVRLPRACD
SAEVKAWLETSEGFAVIKEAFDSTSRFARLQKLHTSIAGRNLYIRFQSRSGDAMGMNMIS
KGTEKALSKLHEYFPEMQILAVSGNYCTDKKPAAINWIEGRGKSVVCEAVIPAKVVREVL
KTTTEAMIEVNINKNLVGSAMAGSIGGYNAHAANIVTAIYIACGQDAAQNVGSSNCITLM
EASGPTNEDLYISCTMPSIEIGTVGGGTNLLPQQACLQMLGVQGACKDNPGENARQLARI
VCGTVMAGELSLMAALAAGHLVKSHMIHNRSKINLQDLQGACTKKTA

Ligands and cofactors

IDNameFormulaCopies
COACoenzyme aC21 H36 N7 O16 P3 S4
MAH3-hydroxy-3-methyl-glutaric acidC6 H10 O54
NAPNADP nicotinamide-adenine-dinucleotide phosphateC21 H28 N7 O17 P34

Primary citation

Crystal structure of the catalytic portion of human HMG-CoA reductase: insights into regulation of activity and catalysis. Istvan, E.S., Palnitkar, M., Buchanan, S.K. et al. EMBO J (2000) 19:819-830. DOI 10.1093/emboj/19.5.819 · PubMed

Other PDB entries of the same protein (UniProt P04035 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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