>cd05175 PI3Kc_IA_alpha Phosphoinositide 3-kinase (PI3K), class IA, alpha isoform, catalytic domain; The PI3K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases. PI3Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 3-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) or its derivatives. PI3Ks can be divided into three main classes (I, II, and III), defined by their substrate specificity, regulation, and domain structure. Class I PI3Ks are the only enzymes capable of converting PtdIns(4,5)P2 to the critical second messenger PtdIns(3,4,5)P3. Class I enzymes are heterodimers and exist in multiple isoforms consisting of one catalytic subunit (out of four isoforms) and one of several regulatory subunits. They are further classified into class IA (alpha, beta and

Probab=94.64  E-value=0.024  Score=37.36  Aligned_cols=44  Identities=25%  Similarity=0.424  Sum_probs=31.1

Q ss_pred             HHHHHHHHHHHHHHHHHCCEECCCCCCCEEEEECCCCEEEEECC-HHEECCH
Q ss_conf             68999999999998974486617878622898028953574340-3121698
Q gi|254780623|r  264 ERLSVTLVQSFLLHTLRDGFFHADLHPGNLFVDSKGYIVAVDMG-ITGRLSK  314 (517)
Q Consensus       264 ~~la~~l~~~~~~qi~~~GfFHaDPHpGNi~v~~dg~i~~lDfG-~vg~l~~  314 (517)
T Consensus       201 ~ScAGYcV~TYiLgI-------gDRHndNIml~~~GhlfHIDFG~iLg~~p~  245 (366)
T cd05175         201 RSCAGYCVATFILGI-------GDRHNSNIMVKDDGQLFHIDFGHFLDHKKK  245 (366)
T ss_pred             HHHHHHHHHHHHHCC-------CCCCCCCEEECCCCCEEEEECHHHHCCCCC
T ss_conf             987899999987024-------666788457989998999861265366988