X-ray diffraction
2Å resolution



Function and Biology Details

Reactions catalysed:
L-cystathionine + H(2)O = L-homocysteine + NH(3) + pyruvate
L-arginine + 2-oxoglutarate + O(2) = (3S)-3-hydroxy-L-arginine + succinate + CO(2)
(1a) S-adenosyl-L-methionine + [protein]-L-arginine = S-adenosyl-L-homocysteine + [protein]-N(omega)-methyl-L-arginine
5,10-methylenetetrahydrofolate + dUMP = dihydrofolate + dTMP
(1a) L-cystathionine = L-cysteine + 2-aminobut-2-enoate
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.
(S)-lactate + NAD(+) = pyruvate + NADH
S-adenosyl-L-methionine + a catechol = S-adenosyl-L-homocysteine + a guaiacol
(2S)-2-hydroxy-3,4-dioxopentyl phosphate = 3-hydroxy-2,4-dioxopentyl phosphate
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.
(GlcNAc-(1->4)-Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala))(n)-diphosphoundecaprenol + GlcNAc-(1->4)-Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol = (GlcNAc-(1->4)-Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala))(n+1)-diphosphoundecaprenol + undecaprenyl diphosphate
Autocatalytic release of the core protein from the N-terminus of the togavirus structural polyprotein by hydrolysis of a -Trp-|-Ser- bond.
Random hydrolysis of (1->4)-beta-D-mannosidic linkages in mannans, galactomannans and glucomannans
Peptidylproline (omega=180) = peptidylproline (omega=0)
ATP + thiamine = AMP + thiamine diphosphate
D-glucuronate = D-fructuronate
1-(5-phospho-beta-D-ribosyl)-ATP + diphosphate = ATP + 5-phospho-alpha-D-ribose 1-diphosphate
NADH + ROOH + H(+) = NAD(+) + H(2)O + ROH
ATP + RNA(n) = diphosphate + RNA(n+1)
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.
S-adenosyl-L-methionine + adenine in DNA = S-adenosyl-L-homocysteine + N-6-methyladenine in DNA 
10-formyltetrahydrofolate + UDP-4-amino-4-deoxy-beta-L-arabinose = 5,6,7,8-tetrahydrofolate + UDP-4-deoxy-4-formamido-beta-L-arabinose
N-acetyl-O-acetylneuraminate + H(2)O = N-acetylneuraminate + acetate
ATP + H(2)O + cellular protein(Side 1) = ADP + phosphate + cellular protein(Side 2)
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.
NH(3) + 2 H(2)O + 6 ferricytochrome c = nitrite + 6 ferrocytochrome c + 7 H(+)
Acetyl-CoA + an alkane-alpha,omega-diamine = CoA + an N-acetyldiamine
4-O-(beta-L-arabinofuranosyl-(1->2)-beta-L-arabinofuranosyl-(1->2)-beta-L-arabinofuranosyl)-(2S,4S)-4-hydroxyproline + H(2)O = 4-O-(beta-L-arabinofuranosyl)-(2S,4S)-4-hydroxyproline + beta-L-arabinofuranosyl-(1->2)-beta-L-arabinofuranose
A 2'-deoxyribonucleoside 5'-monophosphate + H(2)O = a 2'-deoxyribonucleoside + phosphate
Carbamoyl phosphate + L-aspartate = phosphate + N-carbamoyl-L-aspartate
Random hydrolysis of (1->6)-alpha-D-mannosidic linkages in unbranched (1->6)-mannans
(2E,6E)-farnesyl diphosphate + isopentenyl diphosphate = diphosphate + geranylgeranyl diphosphate
NTP + H(2)O = NDP + phosphate
Pyruvate + L-aspartate-4-semialdehyde = (4S)-4-hydroxy-2,3,4,5-tetrahydro-(2S)-dipicolinate + H(2)O
A 5'-phosphopolynucleotide + H(2)O = a polynucleotide + phosphate
Endohydrolysis of (1->4)-alpha-D-glucosidic linkages in polysaccharides containing three or more (1->4)-alpha-linked D-glucose units
A (5-L-glutamyl)-peptide + an amino acid = a peptide + a 5-L-glutamyl amino acid
D-glyceraldehyde 3-phosphate + phosphate + NAD(+) = 3-phospho-D-glyceroyl phosphate + NADH
N-carbamoylputrescine + H(2)O = putrescine + CO(2) + NH(3)
ATP + adenylyl sulfate = ADP + 3'-phosphoadenylyl sulfate
Cleavage of peptide bonds with very broad specificity.
Preferential cleavage: (Ac)(2)-L-Lys-D-Ala-|-D-Ala. Also transpeptidation of peptidyl-alanyl moieties that are N-acyl substituents of D-alanine.
D-xylopyranose = D-xylulose
L-leucine + 2-oxoglutarate = 4-methyl-2-oxopentanoate + L-glutamate
Diphosphate + H(2)O = 2 phosphate
Hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D-galactosides
(1a) L-glutamine + H(2)O = L-glutamate + NH(3)
Cleaves -Ala-|-Ser- and -Ala-|-Ala- bonds in the scaffold protein.
ATP + H(2)O = ADP + phosphate
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.
5,6,7,8-tetrahydrofolate + NADP(+) = 7,8-dihydrofolate + NADPH
Geranylgeranyl diphosphate = (+)-copalyl diphosphate
ADP-D-ribose 1''-phosphate + H(2)O = ADP-D-ribose + phosphate
3'-end directed exonucleolytic cleavage of viral RNA-DNA hybrid
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).
A glutathione-S-conjugate + H(2)O = an (L-cysteinylglycine)-S-conjugate + L-glutamate
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
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1)
Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1)
L-asparagine + H(2)O = L-aspartate + NH(3)
UDP-alpha-D-glucuronate + NAD(+) = UDP-beta-L-threo-pentapyranos-4-ulose + CO(2) + NADH
L-glutamate + H(2)O + NADP(+) = 2-oxoglutarate + NH(3) + NADPH
Biochemical function:
Cellular component:

Structure analysis Details

Assembly composition:
homo tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
Transthyretin Chains: A, B
Molecule details ›
Chains: A, B
Length: 127 amino acids
Theoretical weight: 13.72 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21
  • Canonical: P02766 (Residues: 21-147; Coverage: 100%)
Gene names: PALB, TTR
Sequence domains: HIUase/Transthyretin family
Structure domains: Transthyretin/hydroxyisourate hydrolase domain

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ENRAF-NONIUS
Spacegroup: P21212
Unit cell:
a: 43.288Å b: 85.288Å c: 64.781Å
α: 90° β: 90° γ: 90°
R R work R free
0.197 0.192 0.239
Expression system: Escherichia coli BL21