>sp|C4KIE1|GCH3_SULIK GTP cyclohydrolase III OS=Sulfolobus islandicus GN=gch3 MKVLAIKLVDYREWTERLGYDREWLIQKIQNKFMMKIHEIASQYSTFPLQLRFDNFLMIV DGITNTQLIYMINDMQENLPVGIKTCLGYGKTPLEAQWNASVCLNNKEDKFKEYVDEKIA ALHFDINFNTEALKYTSVYDSFLEITNIYVDLSRFLYKIGGILQYLGGDNYLGFVSTNSV NKVIEKFSDDNKIKVGIGIGQNARTAIKLATTSLEKIRNNREKTWHIEEE