>sp|O27096|GCH3_METTH GTP cyclohydrolase III OS=Methanothermobacter thermautotrophicus GN=gch3 MIQMTLIQIDNYGPWTVTPTPRNEADLQIMQAELYADLQRQFAARQGLVFFTRFDNMLAV TNGMDLEDHRRIQKSIGNRYPITVSMGVGAAETPYDAQRNASRALQSHGGAQSEERKEVL AIDGLVDEGYVQIAHIDINGITETMTDIVPAYDTSFIVNRVQHFLMKKLIKEGALLFFIG GDNFMSPCNGLEPQGLLRIINEIDDEINVALKAGIGKAPTAEKAANLADLALEEIRGGFT YDLVHVMKE