A recombinase polymerase amplification process of amplification of a double stranded target nucleic acid molecule, comprising the steps of: (a) contacting a combination of UvsX, UvsY, and gp32 protein reaction components having cross-compatibility for an RPA process, with a first and a second single stranded nucleic acid primer specific for said double stranded target nucleic acid molecule to form a first and a second nucleoprotein primer, wherein said UvsX, UvsY, and gp32 proteins are each derived from a myoviridae phage, and wherein no more than two of said UvsX, UvsY and gp32 proteins are T4 phage proteins, and wherein the myoviridae phage from which the UvsX protein is derived is selected from the group consisting of T4, T6, Rb69, Aeh1, KVP40, Acinetobacter phage 133, Aeromonas phage 65, and Rb43; (b) contacting the first nucleoprotein primer to said double stranded target nucleic acid molecule to create a first D loop structure at a first portion of said double stranded target nucleic acid molecule and contacting the second nucleoprotein primer to said double stranded target nucleic acid molecule to create a second D loop structure at a second portion of said double stranded target nucleic acid molecule such that the 3' ends of said first nucleic acid primer and said second nucleic acid primer are oriented toward each other on the same double stranded target nucleic acid molecule without completely denaturing the target nucleic acid molecule; (c) extending the 3' end of said first and second nucleoprotein primer with one or more polymerases capable of strand displacement synthesis and dNTPs to generate a first and second double stranded target nucleic acid molecule and a first and second displaced strand of nucleic acid; and (d) continuing the reaction through repetition of (b) and (c) until a desired degree of amplification is reached. (a) contacting a combination of UvsX, UvsY, and gp32 protein reaction components having cross-compatibility for an RPA process, with a first and a second single stranded nucleic acid primer specific for said double stranded target nucleic acid molecule to form a first and a second nucleoprotein primer, wherein said UvsX, UvsY, and gp32 proteins are each derived from a myoviridae phage, and wherein no more than two of said UvsX, UvsY and gp32 proteins are T4 phage proteins, and wherein the myoviridae phage from which the UvsX protein is derived is selected from the group consisting of T4, T6, Rb69, Aeh1, KVP40, Acinetobacter phage 133, Aeromonas phage 65, and Rb43; (b) contacting the first nucleoprotein primer to said double stranded target nucleic acid molecule to create a first D loop structure at a first portion of said double stranded target nucleic acid molecule and contacting the second nucleoprotein primer to said double stranded target nucleic acid molecule to create a second D loop structure at a second portion of said double stranded target nucleic acid molecule such that the 3' ends of said first nucleic acid primer and said second nucleic acid primer are oriented toward each other on the same double stranded target nucleic acid molecule without completely denaturing the target nucleic acid molecule; (c) extending the 3' end of said first and second nucleoprotein primer with one or more polymerases capable of strand displacement synthesis and dNTPs to generate a first and second double stranded target nucleic acid molecule and a first and second displaced strand of nucleic acid; and (d) continuing the reaction through repetition of (b) and (c) until a desired degree of amplification is reached.