2QV6


Conserved Protein Domain Family
GCH_III

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pfam05165: GCH_III 
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GTP cyclohydrolase III
GTP cyclohydrolase (GCH) III from Methanocaldococcus jannaschi catalyzes the conversion of GTP to 2-amino-5-formylamino-6-ribosylamino-4(3H)-pyrimidinone 5'-phosphate (FAPy). The reaction requires two bound magnesium ions for the catalysis and is activated by monovalent cations such as potassium and ammonium. The enzyme is a tetramer of identical subunits; each monomer is composed of an N- and a C-terminal domain that adopt nearly superimposible structures, suggesting that the protein has arisen by gene duplication. The family is found in archaea and bacteria.
Statistics
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PSSM-Id: 147379
Aligned: 4 rows
Threshold Bit Score: 319.908
Created: 22-Mar-2022
Updated: 17-Oct-2022
Structure
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Program:
Drawing:
Aligned Rows:
PubMed ReferencesClick to see Conserved Features Help

Sequence Alignment
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Format: Row Display: Color Bits: Type Selection:
2QV6_B   1 MiqiTVIQIDNYGPWTVTPNPRRESDLQALQSRLYADLNLMFGAHKGLVFYTRFDNLIAITNGIDLITHKRIQESIRNRY 80  Methanocaldococcus ja...
O27096   1 MiqmTLIQIDNYGPWTVTPTPRNEADLQIMQAELYADLQRQFAARQGLVFFTRFDNMLAVTNGMDLEDHRRIQKSIGNRY 80  Methanothermobacter t...
Q9YC89  15 V---------GYREWTEELGSDREWIIQTLQSDIYAAAQKEAAGYGGFVLPIRYDIMLLISSNMGVQEHARVLDAIAGLS 85  Aeropyrum pernix K1
Q9HQS9   1 M---AAVQIDDYGPWTTEPAPRRETDLQALQARLFADVADFLGGRDGYAFAGRFDNMVGAATGIAPAAFERLQERIRNRY 77  Halobacterium salinar...
2QV6_B  81 PFTVSMVIASAETPYEAQKLATETLQEYGSAQDENRKEVLDVaNEL---VVDGYVQIAHIDINNITGTLTDIVSAYDTYL 157 Methanocaldococcus ja...
O27096  81 PITVSMGVGAAETPYDAQRNASRALQSHGGAQSEERKEVLAI-DGL---VDEGYVQIAHIDINGITETMTDIVPAYDTSF 156 Methanothermobacter t...
Q9YC89  86 KVKVRMASYCGVKPLDAVERAWNALRRREERLIYERCE------------GEEYTAIAHIDLNNVT-AITRAEGPVRTYY 152 Aeropyrum pernix K1
Q9HQS9  78 PVTVSVGIGTARTPADALDAAGTALRDAGSAQDENRQEALSHrSPPgfaGTPGAVTIAHFDVVDATGTYTDTVSPVRAGT 157 Halobacterium salinar...
2QV6_B 158 NVNKVKLALMEEL-LKYNALLFFIGGDNFMAPSNGMSEEDFLDIFNRINKKYKI-----ELKAGIGIGRTAEDASNLADI 231 Methanocaldococcus ja...
O27096 157 IVNRVQHFLMKKL-IKEGALLFFIGGDNFMSPCNGLEPQGLLRIINEIDDEINV-----ALKAGIGKAPTAEKAANLADL 230 Methanothermobacter t...
Q9YC89 153 EVMDLMAKISKVA-EKIGAITQYLGGDNILA---------VLPLNGSVKETVDMllvrsDLKAGIGIAPTARASLALAAE 222 Aeropyrum pernix K1
Q9HQS9 158 EIQGAVTTLAEYLyDTHDAVTQFVGGDNAIAVCPEIDAGIVDDATAHVREAAGV-----DFQVGVGHGDTPHDAGADAKH 232 Halobacterium salinar...
2QV6_B 232 GLEKIR--GKLVDKNVCTLKQ 250 Methanocaldococcus jannaschii
O27096 231 ALEEIR--GGFTYDLVHVMKE 249 Methanothermobacter thermautotrophicus str. Delta H
Q9YC89 223 ALHEIR--SKINPGPLVVKAQ 241 Aeropyrum pernix K1
Q9HQS9 233 ALETCRatGARVHGPWTTADD 253 Halobacterium salinarum NRC-1
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