DB code: D00540

RLCP classification 3.133.90030.395 : Transfer
CATH domain 3.30.63.10 : Guanylate Kinase phosphate binding domain Catalytic domain
3.40.50.300 : Rossmann fold Catalytic domain
E.C. 2.7.4.8
CSA
M-CSA
MACiE

CATH domain Related DB codes (homologues)
3.30.63.10 : Guanylate Kinase phosphate binding domain D00129
3.40.50.300 : Rossmann fold S00527 S00547 S00548 S00550 S00554 S00555 S00671 S00672 S00676 S00680 S00682 S00913 S00914 S00301 S00302 S00303 S00304 S00307 S00308 S00305 S00306 S00309 S00310 S00311 M00114 M00199 D00129 D00130 M00186

Uniprot Enzyme Name
UniprotKB Protein name Synonyms RefSeq Pfam
P0A5I4 Guanylate kinase
EC 2.7.4.8
GMP kinase
NP_215905.1 (Protein)
NC_000962.3 (DNA/RNA sequence)
NP_335885.1 (Protein)
NC_002755.2 (DNA/RNA sequence)
YP_006514769.1 (Protein)
NC_018143.1 (DNA/RNA sequence)
PF00625 (Guanylate_kin)
[Graphical View]

KEGG enzyme name
guanylate kinase
deoxyguanylate kinase
5'-GMP kinase
GMP kinase
guanosine monophosphate kinase
ATP:GMP phosphotransferase

UniprotKB: Accession Number Entry name Activity Subunit Subcellular location Cofactor
P0A5I4 KGUA_MYCTU ATP + GMP = ADP + GDP. Cytoplasm (By similarity).

KEGG Pathways
Map code Pathways E.C.
MAP00230 Purine metabolism

Compound table
Cofactors Substrates Products Intermediates
KEGG-id C00305 C00002 C00144 C00008 C00035
E.C.
Compound Magnesium ATP GMP ADP GDP
Type divalent metal (Ca2+, Mg2+) amine group,nucleotide amide group,amine group,nucleotide amine group,nucleotide amide group,amine group,nucleotide
ChEBI 18420
 18420
 		15422
 15422
 		17345
 17345
 		16761
 16761
 		17552
 17552
PubChem 888
 888
 		5957
 5957
 		6804
 6804
 		6022
 6022
 		8977
 8977
1s4qA01 Unbound Unbound Unbound Unbound Unbound
1s4qA02 Unbound Unbound Unbound Unbound Unbound

Reference for Active-site residues
resource references E.C.
literature [3], [6] & [9]

Active-site residues
PDB Catalytic residues Cofactor-binding residues Modified residues Main-chain involved in catalysis Comment
1s4qA01 ARG 57;ARG 60;TYR 69
1s4qA02 LYS 34;ARG 155;ARG 166 GLU 119(Magnesium binding)

References for Catalytic Mechanism
References Sections No. of steps in catalysis
[3]
p.1140
[6]
p.110-119
[9]
p.30241

References
[1]
Resource
Comments
Medline ID
PubMed ID 2551688
Journal Eur J Biochem
Year 1989
Volume 184
Pages 433-43
Authors Berger A, Schiltz E, Schulz GE
Title Guanylate kinase from Saccharomyces cerevisiae. Isolation and characterization, crystallization and preliminary X-ray analysis, amino acid sequence and comparison with adenylate kinases.
Related PDB
Related UniProtKB
[2]
Resource
Comments X-RAY CRYSTALLOGRAPHY (2.0 ANGSTROMS).
Medline ID 90133954
PubMed ID 1967656
Journal J Mol Biol
Year 1990
Volume 211
Pages 249-54
Authors Stehle T, Schulz GE
Title Three-dimensional structure of the complex of guanylate kinase from yeast with its substrate GMP.
Related PDB
Related UniProtKB P15454
[3]
Resource
Comments X-RAY CRYSTALLOGRAPHY (2.0 ANGSTROMS).
Medline ID 92235848
PubMed ID 1314905
Journal J Mol Biol
Year 1992
Volume 224
Pages 1127-41
Authors Stehle T, Schulz GE
Title Refined structure of the complex between guanylate kinase and its substrate GMP at 2.0 A resolution.
Related PDB 1gky
Related UniProtKB P15454
[4]
Resource
Comments
Medline ID
PubMed ID 8910414
Journal J Biol Chem
Year 1996
Volume 271
Pages 28038-44
Authors Li Y, Zhang Y, Yan H
Title Kinetic and thermodynamic characterizations of yeast guanylate kinase.
Related PDB
Related UniProtKB
[5]
Resource
Comments
Medline ID
PubMed ID 9235932
Journal J Biol Chem
Year 1997
Volume 272
Pages 19343-50
Authors Zhang Y, Li Y, Wu Y, Yan H
Title Structural and functional roles of tyrosine 78 of yeast guanylate kinase.
Related PDB
Related UniProtKB
[6]
Resource
Comments
Medline ID
PubMed ID 10218107
Journal Adv Enzymol Relat Areas Mol Biol
Year 1999
Volume 73
Pages 103-34
Authors Yan H, Tsai MD
Title Nucleoside monophosphate kinases: structure, mechanism, and substrate specificity.
Related PDB
Related UniProtKB
[7]
Resource
Comments
Medline ID
PubMed ID 10939525
Journal Mol Biol Rep
Year 2000
Volume 27
Pages 45-9
Authors Kumar V
Title Cloning and sequence analysis of lily and tobacco guanylate kinases.
Related PDB
Related UniProtKB
[8]
Resource
Comments X-ray crystallography
Medline ID
PubMed ID 11243817
Journal J Mol Biol
Year 2001
Volume 307
Pages 247-57
Authors Blaszczyk J, Li Y, Yan H, Ji X
Title Crystal structure of unligated guanylate kinase from yeast reveals GMP-induced conformational changes.
Related PDB 1ex6 1ex7
Related UniProtKB
[9]
Resource
Comments
Medline ID
PubMed ID 12036965
Journal J Biol Chem
Year 2002
Volume 277
Pages 30236-43
Authors Sekulic N, Shuvalova L, Spangenberg O, Konrad M, Lavie A
Title Structural characterization of the closed conformation of mouse guanylate kinase.
Related PDB 1lvg
Related UniProtKB

Comments
This enzyme is homologous to the counterpart enzymes from yeast and mouse (D00129 in EzCatDB), although one of catalytic residues (corresponding to Tyr78 of PDB;1ex6A) lacks in this enzyme.
Although the catalytic mechanism of this enzyme must be similar to that of adenylate kinase (S00305 in EzCatDB), according to the literature [3] & [6], the catalytic residues are a little bit different.
Along with basic residues (Lys34, Arg57, Arg60, Arg155 & Arg166), tyrosine residue (Tyr69) act as stabilizers for the transition state.
Although magnesium bound structures have not been reported for this enzyme, Asp98 must play a role in binding of magnesium ion.
Moreover, the literature [6] supported the associative mechanism (or SN2 mechanism).

Created Updated
2004-03-18 2009-04-08