| CPC A61K 31/7052 (2013.01) [C07H 21/04 (2013.01); C07H 19/20 (2013.01); C12Q 1/6869 (2013.01)] | 20 Claims |

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1. A thermophilic nucleic acid polymerase complex comprising a thermophilic nucleic acid polymerase bound to a nucleotide analogue having the formula:
![]() wherein
the symbol “----” is a non-covalent bond;
B is a base or analogue thereof;
L1 is a substituted or unsubstituted methylene, and wherein if L1 is a substituted methylene, L1 is substituted with a substituted or unsubstituted C1-C6 alkylene, substituted or unsubstituted 2 to 6 membered heteroalkylene, substituted or unsubstituted C3-C6 cycloalkylene, substituted or unsubstituted 3 to 6 membered heterocycloalkylene, substituted or unsubstituted phenyl, or substituted or unsubstituted 5 to 6 membered heteroarylene;
L2 is a cleavable linker or a non-cleavable linker;
R3 is triphosphate;
R4A is hydrogen, —CF3, —CCl3, —CBr3, —CI3, —CHF2, —CHCl2, —CHBr2, —CHI2, —CH2F, —CH2Cl, —CH2Br, —CH2I, —CN, substituted or unsubstituted alkyl, or substituted or unsubstituted heteroalkyl;
R4B is hydrogen, —CF3, —CCl3, —CBr3, —CI3, —CHF2, —CHCl2, —CHBr2, —CHI2, —CH2F, —CH2Cl, —CH2Br, —CH2I, —CN, —X—R6, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;
wherein R6 is —CF3, —CCl3, —CBr3, —CI3, —CHF2, —CHCl2, —CHBr2, —CHI2, —CH2F, —CH2Cl, —CH2Br, —CH2I, —CN, substituted or unsubstituted alkyl, or substituted or unsubstituted heteroalkyl; and
wherein X is a bond, O, NR6A, or S;
wherein R6A is —OH, —CF3, —CCl3, —CBr3, —CI3, —CHF2, —CHCl2, —CHBr2, —CHI2, —CH2F, —CH2Cl, —CH2Br, —CH2I, —CN, substituted or unsubstituted alkyl, or substituted or unsubstituted heteroalkyl;
R5 is a detectable label or a biotin moiety;
R7 is hydrogen;
R12 is a streptavidin moiety;
L4 is an orthogonally cleavable linker; and
R13 is a fluorescent dye.
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