4xw3

X-ray diffraction
2Å resolution

Crystal structure of the SPRY domain of the human DEAD-box protein DDX1

Released:
Source organism: Homo sapiens
Primary publication:
Structure of the SPRY domain of the human RNA helicase DDX1, a putative interaction platform within a DEAD-box protein.
Acta Crystallogr F Struct Biol Commun 71 1176-88 (2015)
PMID: 26323305

Function and Biology Details

Reactions catalysed:
Phosphoenolpyruvate + D-erythrose 4-phosphate + H(2)O = 3-deoxy-D-arabino-hept-2-ulosonate 7-phosphate + phosphate
(S)-2,3,4,5-tetrahydropyridine-2,6-dicarboxylate + NAD(P)(+) + H(2)O = (2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate + NAD(P)H
Purine deoxynucleoside + phosphate = purine + 2'-deoxy-alpha-D-ribose 1-phosphate
(8S)-3',8-cyclo-7,8-dihydroguanosine 5'-triphosphate = cyclic pyranopterin phosphate + diphosphate
(1a) cholest-4-en-3-one + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H(+) + O(2) = (25S)-26-hydroxycholest-4-en-3-one + 2 oxidized ferredoxin [iron-sulfur] cluster + H(2)O
1-(5-phospho-beta-D-ribosyl)-ATP + diphosphate = ATP + 5-phospho-alpha-D-ribose 1-diphosphate
ATP + a protein = ADP + a phosphoprotein
N-carbamoylputrescine + H(2)O = putrescine + CO(2) + NH(3)
Beta-nicotinate D-ribonucleotide + diphosphate + CO(2) = pyridine-2,3-dicarboxylate + 5-phospho-alpha-D-ribose 1-diphosphate
N-(5-phospho-D-ribosyl)-anthranilate + diphosphate = anthranilate + 5-phospho-alpha-D-ribose 1-diphosphate
ATP-dependent breakage, passage and rejoining of double-stranded DNA
ATP = 3',5'-cyclic AMP + diphosphate
Release of N-terminal proline from a peptide.
Release of an N-terminal amino acid, Xaa-|-Yaa-, in which Xaa is preferably Leu, but may be other amino acids including Pro although not Arg or Lys, and Yaa may be Pro. Amino acid amides and methyl esters are also readily hydrolyzed, but rates on arylamides are exceedingly low.
GTP + H(2)O = GDP + phosphate
ATP + L-methionine + H(2)O = phosphate + diphosphate + S-adenosyl-L-methionine
2'-deoxyribonucleoside diphosphate + thioredoxin disulfide + H(2)O = ribonucleoside diphosphate + thioredoxin
Cleavage of peptide bonds with very broad specificity.
Nicotinate + 5-phospho-alpha-D-ribose 1-diphosphate + ATP + H(2)O = beta-nicotinate D-ribonucleotide + diphosphate + ADP + phosphate
S-adenosyl-L-methionine + 8-amino-7-oxononanoate = S-adenosyl-4-methylthio-2-oxobutanoate + 7,8-diaminononanoate
Diphosphate + H(2)O = 2 phosphate
Blasticidin S + H(2)O = deaminohydroxyblasticidin S + NH(3)
(1a) 2 Fe(2+) + O(2) + 4 H(2)O = 2 (FeO(OH)) + 4 H(+) + H(2)O(2)
4 Fe(2+) + 4 H(+) + O(2) = 4 Fe(3+) + 2 H(2)O
S-adenosyl-L-methionine + a catechol = S-adenosyl-L-homocysteine + a guaiacol
3'-end directed exonucleolytic cleavage of viral RNA-DNA hybrid
ATP + H(2)O + 4 H(+)(Side 1) = ADP + phosphate + 4 H(+)(Side 2)
(1a) L-cysteine + [enzyme]-cysteine = L-alanine + [enzyme]-S-sulfanylcysteine
2-lysophosphatidylcholine + H(2)O = glycerophosphocholine + a carboxylate
A phenyl acetate + H(2)O = a phenol + acetate
Acyl-[acyl-carrier-protein] + malonyl-[acyl-carrier-protein] = 3-oxoacyl-[acyl-carrier-protein] + CO(2) + [acyl-carrier-protein]
S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N(6)-ubiquitinyl-[acceptor protein]-L-lysine
Hydrolysis of alpha-(2->3)-, alpha-(2->6)-, alpha-(2->8)- glycosidic linkages of terminal sialic acid residues in oligosaccharides, glycoproteins, glycolipids, colominic acid and synthetic substrates.
Acetyl-CoA + alpha-D-glucosamine 1-phosphate = CoA + N-acetyl-alpha-D-glucosamine 1-phosphate
Cyclo(L-tyrosyl-L-tyrosyl) + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H(+) + O(2) = mycocyclosin + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H(2)O
Nitric oxide + H(2)O + ferricytochrome c = nitrite + ferrocytochrome c + 2 H(+)
dCTP + 2 H(2)O = dUMP + diphosphate + NH(3)
TSAVLQ-|-SGFRK-NH(2) and SGVTFQ-|-GKFKK the two peptides corresponding to the two self-cleavage sites of the SARS 3C-like proteinase are the two most reactive peptide substrates. The enzyme exhibits a strong preference for substrates containing Gln at P1 position and Leu at P2 position.
Endopeptidase with a preference for cleavage when the P1 position is occupied by Glu-|- and the P1' position is occupied by Gly-|-
3-oxoadipate + NAD(P)(+) = 2-maleylacetate + NAD(P)H
Geranyl diphosphate + isopentenyl diphosphate = diphosphate + (2Z,6E)-farnesyl diphosphate
Orotidine 5'-phosphate = UMP + CO(2)
N-acetyl-O-acetylneuraminate + H(2)O = N-acetylneuraminate + acetate
ATP + H(2)O + cellular protein(Side 1) = ADP + phosphate + cellular protein(Side 2)
An acyl-[acyl-carrier protein] + NAD(+) = a trans-2,3-dehydroacyl-[acyl-carrier protein] + NADH
NTP + H(2)O = NDP + phosphate
ATP + L-glutamate + NH(3) = ADP + phosphate + L-glutamine
Oleoyl-[acyl-carrier-protein] + H(2)O = [acyl-carrier-protein] + oleate
(+)-muconolactone = 5-oxo-4,5-dihydrofuran-2-acetate
Maltose = alpha,alpha-trehalose
UTP + N-acetyl-alpha-D-glucosamine 1-phosphate = diphosphate + UDP-N-acetyl-alpha-D-glucosamine
ATP + 3-methylbut-3-en-1-yl phosphate = ADP + 3-methylbut-3-en-1-yl diphosphate
Endohydrolysis of RNA in RNA/DNA hybrids. Three different cleavage modes: 1. sequence-specific internal cleavage of RNA. Human immunodeficiency virus type 1 and Moloney murine leukemia virus enzymes prefer to cleave the RNA strand one nucleotide away from the RNA-DNA junction. 2. RNA 5'-end directed cleavage 13-19 nucleotides from the RNA end. 3. DNA 3'-end directed cleavage 15-20 nucleotides away from the primer terminus.
(3R)-3-hydroxyacyl-[acyl-carrier-protein] + NADP(+) = 3-oxoacyl-[acyl-carrier-protein] + NADPH
Endonucleolytic cleavage of DNA to give random double-stranded fragments with terminal 5'-phosphates, ATP is simultaneously hydrolyzed.
A chalcone = a flavanone
A beta-lactam + H(2)O = a substituted beta-amino acid
2 3-phospho-D-glycerate + 2 H(+) = D-ribulose 1,5-bisphosphate + CO(2) + H(2)O
Phosphoenolpyruvate + 3-phosphoshikimate = phosphate + 5-O-(1-carboxyvinyl)-3-phosphoshikimate
RX + glutathione = HX + R-S-glutathione
5,10-methylenetetrahydrofolate + dUMP = dihydrofolate + dTMP
D-glucarate = 5-dehydro-4-deoxy-D-glucarate + H(2)O
L-homoserine + NAD(P)(+) = L-aspartate 4-semialdehyde + NAD(P)H
(1a) 2 cob(II)alamin + 2 [corrinoid adenosyltransferase] = 2 [corrinoid adenosyltransferase]-cob(II)alamin
6-hydroxymethyl-7,8-dihydropterin diphosphate + 4-aminobenzoate = diphosphate + dihydropteroate
Cleaves -Ala-|-Ser- and -Ala-|-Ala- bonds in the scaffold protein.
Hydrolysis of proteins to small peptides in the presence of ATP and magnesium. Alpha-Casein is the usual test substrate. In the absence of ATP, only oligopeptides shorter than five residues are hydrolyzed (such as succinyl-Leu-Tyr-|-NHMec; and Leu-Tyr-Leu-|-Tyr-Trp, in which cleavage of the -Tyr-|-Leu- and -Tyr-|-Trp bonds also occurs).
Autocatalytic release of the core protein from the N-terminus of the togavirus structural polyprotein by hydrolysis of a -Trp-|-Ser- bond.
Selective hydrolysis of -Xaa-Xaa-|-Yaa- bonds in which each of the Xaa can be either Arg or Lys and Yaa can be either Ser or Ala.
Hydrolysis of four peptide bonds in the viral precursor polyprotein, commonly with Asp or Glu in the P6 position, Cys or Thr in P1 and Ser or Ala in P1'.
ATP + sulfate = diphosphate + adenylyl sulfate
NAD(+) + glycine + sulfide = nicotinamide + ADP-5-ethyl-4-methylthiazole-2-carboxylate + 3 H(2)O
5,10-methylenetetrahydrofolate + glycine + H(2)O = tetrahydrofolate + L-serine
Peptidylproline (omega=180) = peptidylproline (omega=0)
Endohydrolysis of (1->4)-beta-D-xylosidic linkages in xylans
(2E,6E)-farnesyl diphosphate + isopentenyl diphosphate = diphosphate + geranylgeranyl diphosphate
[a protein]-serine/threonine phosphate + H(2)O = [a protein]-serine/threonine + phosphate
Endohydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose, lichenin and cereal beta-D-glucans
L-histidinol phosphate + H(2)O = L-histidinol + phosphate
Endohydrolysis of (1->4)-alpha-D-glucosidic linkages in polysaccharides containing three or more (1->4)-alpha-linked D-glucose units
D-fructose 1,6-bisphosphate + H(2)O = D-fructose 6-phosphate + phosphate
2 superoxide + 2 H(+) = O(2) + H(2)O(2)
(S)-malate = fumarate + H(2)O
H(2)CO(3) = CO(2) + H(2)O
N(6)-(Delta(2)-isopentenyl)-adenosine 5'-phosphate + H(2)O = N(6)-(dimethylallyl)adenine + D-ribose 5'-phosphate
Eliminative cleavage of (1->4)-alpha-D-galacturonan to give oligosaccharides with 4-deoxy-alpha-D-galact-4-enuronosyl groups at their non-reducing ends
S-adenosyl-L-homocysteine + H(2)O = L-homocysteine + adenosine
ATP + thymidine = ADP + thymidine 5'-phosphate
Geranylgeranyl diphosphate = (+)-copalyl diphosphate
ATP + adenylyl sulfate = ADP + 3'-phosphoadenylyl sulfate
Thiol-dependent hydrolysis of ester, thioester, amide, peptide and isopeptide bonds formed by the C-terminal Gly of ubiquitin (a 76-residue protein attached to proteins as an intracellular targeting signal).
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1)
Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1)
Hydrolyzes single-stranded DNA or mismatched double-stranded DNA and polynucleotides, releasing free uracil
Hydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose and similar substrates, releasing cellobiose from the reducing ends of the chains.
L-arginine + 2-oxoglutarate + O(2) = (3S)-3-hydroxy-L-arginine + succinate + CO(2)
NADPH + NAD(+) + H(+)(Side 1) = NADP(+) + H(+)(Side 2) + NADH
Acetyl-CoA + 3-methyl-2-oxobutanoate + H(2)O = (2S)-2-isopropylmalate + CoA
An ultra-long-chain mono-unsaturated acyl-[acyl-carrier protein] + a malonyl-[acyl-carrier protein] = an ultra-long-chain mono-unsaturated 3-oxo-fatty acyl-[acyl-carrier protein] + CO(2) + a holo-[acyl-carrier protein]
ATP + AMP = 2 ADP
L-glutamate + H(2)O + NADP(+) = 2-oxoglutarate + NH(3) + NADPH
ATP + protein L-histidine = ADP + protein N-phospho-L-histidine
ATP + a [protein]-L-tyrosine = ADP + a [protein]-L-tyrosine phosphate
ATP + 6-hydroxymethyl-7,8-dihydropterin = AMP + 6-hydroxymethyl-7,8-dihydropterin diphosphate
ATP + L-glutamate + tRNA(Glu) = AMP + diphosphate + L-glutamyl-tRNA(Glu)
ATP + (R)-pantothenate = ADP + (R)-4'-phosphopantothenate
Succinate + a quinone = fumarate + a quinol
GDP-beta-L-fucose + NADP(+) = GDP-4-dehydro-alpha-D-rhamnose + NADPH
Malonyl-CoA + an [acyl-carrier-protein] = CoA + a malonyl-[acyl-carrier-protein]
(1R,6R)-6-hydroxy-2-succinylcyclohexa-2,4-diene-1-carboxylate = 2-succinylbenzoate + H(2)O
Selective cleavage of Gln-|-Gly bond in the poliovirus polyprotein. In other picornavirus reactions Glu may be substituted for Gln, and Ser or Thr for Gly.
Selective cleavage of Tyr-|-Gly bond in picornavirus polyprotein.
4-(2-carboxyphenyl)-4-oxobutanoyl-CoA = 1,4-dihydroxy-2-naphthoyl-CoA + H(2)O
Pyruvate + L-aspartate-4-semialdehyde = (4S)-4-hydroxy-2,3,4,5-tetrahydro-(2S)-dipicolinate + H(2)O
ATP + L-leucine + tRNA(Leu) = AMP + diphosphate + L-leucyl-tRNA(Leu)
ATP + L-tyrosine + tRNA(Tyr) = AMP + diphosphate + L-tyrosyl-tRNA(Tyr)
Limited hydrolysis of proteins of the neuroexocytosis apparatus, synaptobrevin (also known as neuronal vesicle-associated membrane protein, VAMP), synaptosome-associated protein of 25 kDa (SNAP25) or syntaxin. No detected action on small molecule substrates.
Palmitoyl-CoA + H(2)O = CoA + palmitate
AMP + H(2)O = D-ribose 5-phosphate + adenine
NAD(+) + H(2)O = ADP-D-ribose + nicotinamide
ATP + H(2)O + a folded polypeptide = ADP + phosphate + an unfolded polypeptide
Preferential cleavage: (Ac)(2)-L-Lys-D-Ala-|-D-Ala. Also transpeptidation of peptidyl-alanyl moieties that are N-acyl substituents of D-alanine.
5'-deoxyadenosine + H(2)O = 5-deoxy-D-ribose + adenine
Hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D-galactosides
ATP + H(2)O = ADP + phosphate
5,6,7,8-tetrahydrofolate + NADP(+) = 7,8-dihydrofolate + NADPH
L-lysyl-tRNA(Lys) + phosphatidylglycerol = tRNA(Lys) + 3-O-L-lysyl-1-O-phosphatidylglycerol
2-C-methyl-D-erythritol 4-phosphate + NADP(+) = 1-deoxy-D-xylulose 5-phosphate + NADPH
ATP + (R)-pantoate + beta-alanine = AMP + diphosphate + (R)-pantothenate
The C-O-P bond 3' to the apurinic or apyrimidinic site in DNA is broken by a beta-elimination reaction, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate
Release of an N-terminal amino acid, preferentially leucine, but not glutamic or aspartic acids.
ATP + acetyl-CoA + HCO(3)(-) = ADP + phosphate + malonyl-CoA
ATP + propanoyl-CoA + HCO(3)(-) = ADP + phosphate + (S)-methylmalonyl-CoA
2,5-diamino-6-(5-phospho-D-ribitylamino)pyrimidin-4(3H)-one + NAD(P)(+) = 2,5-diamino-6-(5-phospho-D-ribosylamino)pyrimidin-4(3H)-one + NAD(P)H
Release of N-terminal amino acids, preferentially methionine, from peptides and arylamides.
Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
ATP-dependent RNA helicase DDX1 Chains: A, B
Molecule details ›
Chains: A, B
Length: 221 amino acids
Theoretical weight: 24.64 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q92499 (Residues: 72-283; Coverage: 29%)
Gene name: DDX1
Sequence domains: SPRY domain
Structure domains: Jelly Rolls

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X10SA
Spacegroup: P212121
Unit cell:
a: 45.06Å b: 76.14Å c: 122.66Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.202 0.2 0.237
Expression system: Escherichia coli BL21(DE3)