METHOD FOR PRODUCTION OF TRACP5b

A method for producing TRACP5b, wherein the method comprises the steps of:

• (a) producing a silkworm which comprises a promoter of a DNA encoding a protein specifically expressed in its silk gland and a DNA encoding TRACP5 whose expression is regulated directly or indirectly by the promoter, and which secretes TRACP5b into the silk gland;
• and
• (b) recovering said TRACP5b from the produced silkworm.

A method for producing a silkworm that secretes TRACP5b, which comprises the step of introducing a DNA encoding TRACP5 into a silkworm.

A method for producing a silkworm that secretes TRACP5b, which comprises the step of introducing a DNA encoding TRACP5 into a silkworm egg.

A method for producing a silkworm that secretes TRACP5b into its silk gland, which comprises the step of producing a silkworm egg which comprises a promoter of a DNA encoding a protein specifically expressed in the silk gland, and a DNA encoding TRACP5 whose expression is regulated directly or indirectly by the promoter.

A silkworm which comprises a DNA encoding TRACP5, and secretes TRACP5b.

A silkworm which comprises a promoter of a DNA encoding a protein that is specifically expressed in its silk gland and a DNA encoding TRACP5 whose expression is regulated directly or indirectly by the promoter, and which secretes TRACP5b into the silk gland.

A silkworm that comprises a DNA encoding TRACP5 which is operably linked downstream of a target promoter of a transcriptional regulator.