2BZ1 - JenaLib

Title :   CRYSTAL STRUCTURE OF APO E. COLI GTP CYCLOHYDROLASE II

Authors :   J. Ren, M. Kotaka, M. Lockyer, H. K. Lamb, A. R. Hawkins, D. K. Stammers

Date :   09 Aug 05 (Deposition) - 19 Aug 05 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.54

Chains :   Asym. Unit : A
Biol. Unit 1: A  (2x)

Keywords :   Riboflavin Biosynthesis, Gtp Cyclohydrolase Ii, Catalytic Zinc, Hydrolase, Magnesium (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   J. Ren, M. Kotaka, M. Lockyer, H. K. Lamb, A. R. Hawkins, D. K. Stammers
Gtp Cyclohydrolase Ii Structure And Mechanism.
J. Biol. Chem. V. 280 36912 2005
PubMed-ID: 16115872 | Reference-DOI: 10.1074/JBC.M507725200

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (5, 9)

Sites (6, 6)

Asymmetric Unit (6, 6)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	CYS A:54 , CYS A:65 , CYS A:67 , HOH A:2191	BINDING SITE FOR RESIDUE ZN A1174
2	AC2	SOFTWARE	ARG A:94 , TYR A:105 , GLN A:108 , HOH A:2137 , HOH A:2191 , HOH A:2192 , HOH A:2193 , HOH A:2194	BINDING SITE FOR RESIDUE SO4 A1175
3	AC3	SOFTWARE	ARG A:128 , LYS A:154 , TAU A:1179 , HOH A:2081 , HOH A:2195	BINDING SITE FOR RESIDUE SO4 A1176
4	AC4	SOFTWARE	PRO A:152 , ARG A:168 , HOH A:2198	BINDING SITE FOR RESIDUE SO4 A1177
5	AC5	SOFTWARE	ARG A:49 , GLN A:70 , THR A:149 , ASN A:150 , LYS A:154 , SO4 A:1176 , HOH A:2079 , HOH A:2203	BINDING SITE FOR RESIDUE TAU A1179
6	AC6	SOFTWARE	GLY A:57 , ASP A:58 , ALA A:59 , LEU A:60 , PHE A:61 , HOH A:2090 , HOH A:2105 , HOH A:2199 , HOH A:2200	BINDING SITE FOR RESIDUE GOL A1178

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

Sequences/Alignments

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:174
 aligned with RIBA_ECOLI | P0A7I7 from UniProtKB/Swiss-Prot  Length:196

    Alignment length:174
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170    
           RIBA_ECOLI     1 MQLKRVAEAKLPTPWGDFLMVGFEELATGHDHVALVYGDISGHTPVLARVHSECLTGDALFSLRCDCGFQLEAALTQIAEEGRGILLYHRQEGRNIGLLNKIRAYALQDQGYDTVEANHQLGFAADERDFTLCADMFKLLGVNEVRLLTNNPKKVEILTEAGINIVERVPLIVG 174
               SCOP domains d2bz1a_ A: GTP cyclohydrolase II, RibA                                                                                                                                         SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..eeeeeeeeeee..eeeeeeeeee.....eeeeeee........eeeeeee.hhhhhh......hhhhhhhhhhhhhhhhh.eeeeee.hhhhhhhhhhhhhhhhhhhh..hhhhhhhhh........hhhhhhhhhhh....eeee..hhhhhhhhhhh...eeeee..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2bz1 A   1 mQLKRVAEAKLPTPWGDFLmVGFEELATGHDHVALVYGDISGHTPVLARVHSECLTGDALFSLRCDCGFQLEAALTQIAEEGRGILLYHRQEGRNIGLLNKIRAYALQDQGYDTVEANHQLGFAADERDFTLCADmFKLLGVNEVRLLTNNPKKVEILTEAGINIVERVPLIVG 174
                            |       10        20        30        40        50        60        70        80        90       100       110       120       130     | 140       150       160       170    
                            |                 20-MSE                                                                                                             136-MSE                                  
                            1-MSE

Legend:		→ Mismatch	(orange background)
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		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (0, 0)

Pfam Domains (0, 0)

Gene Ontology (8, 8)

Asymmetric Unit(hide GO term definitions)

Chain A (RIBA_ECOLI | P0A7I7)

molecular function
	GO:0005525	GTP binding	Interacting selectively and non-covalently with GTP, guanosine triphosphate.
	GO:0003935	GTP cyclohydrolase II activity	Catalysis of the reaction: GTP + 3 H(2)O = 2,5-diamino-6-hydroxy-4-(5-phosphoribosylamino)-pyrimidine + diphosphate + formate + 3 H(+).
	GO:0016787	hydrolase activity	Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	GO:0000166	nucleotide binding	Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0008270	zinc ion binding	Interacting selectively and non-covalently with zinc (Zn) ions.
biological process
	GO:0009231	riboflavin biosynthetic process	The chemical reactions and pathways resulting in the formation of riboflavin (vitamin B2), the precursor for the coenzymes flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD).

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