>gnl|CDD|29264 cd00209, DHFR, Dihydrofolate reductase (DHFR). Reduces 7,8-dihydrofolate to 5,6,7,8-tetrahydrofolate with NADPH as a cofactor. This is an essential step in the biosynthesis of deoxythymidine phosphate since 5,6,7,8-tetrahydrofolate is required to regenerate 5,10-methylenetetrahydrofolate which is then utilized by thymidylate synthase. Inhibition of DHFR interrupts thymidilate synthesis and DNA replication, inhibitors of DHFR (such as Methotrexate) are used in cancer chemotherapy. 5,6,7,8-tetrahydrofolate also is involved in glycine, serine, and threonine metabolism and aminoacyl-tRNA biosynthesis.. Length = 158

Score = 172 bits (437), Expect = 5e-44 Identities = 71/163 (43%), Positives = 94/163 (57%), Gaps = 7/163 (4%) Query: 6 IILIAAITRNNVIGSCGGMPWKISSDLKRFKSLTTGNPVVMGYRTFQSIGRL-LPGRTNI 64 I LI A+ N VIG +PW + DLK FK TTGNPV+MG +TF+SI R LPGRTNI Sbjct: 1 ISLIVAVDENGVIGKDNKLPWHLPEDLKHFKKTTTGNPVIMGRKTFESIPRRPLPGRTNI 60 Query: 65 IITRDNTRRASVNPEAVLASSILDSLDLASKTGSKKIFIIGGGEIYAQTISLAHTLYITH 124 +++R + S+ ++L+LA T ++IF+IGG EIY Q + A LY+T Sbjct: 61 VLSR--QLDYQDAEGVEVVHSLEEALELAENTV-EEIFVIGGAEIYKQALPYADRLYLTR 117 Query: 125 IEKEIEGDVFFPSIDSNIWKKQEKEIITSAGEGDDYPTRFVIY 167 I E EGD FFP ID + W+ +E + E D Y F Y Sbjct: 118 IHAEFEGDTFFPEIDESEWELVSEEEVF---EEDGYSYTFETY 157

RPSBLAST alignment for GI: 254780957 and conserved domain: cd00209