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Seminal vesicles...

Seminal vesicles

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The seminal vesicles are a pair of tube-like glands in males. They are found behind the bladder and their secretion makes about 70% of the content of semen. The secretion of seminal vesicle is rich in sugars (especially fructose) which feeds the sperms. The fluid also has clotting properties that makes the semen sticky. Prostaglandins in seminal fluid are believed to aid fertilisation by causing the mucous lining of the cervix to be more receptive to sperm as well as by aiding the movement of sperm towards the ovum with peristalic contractions of uterus and Fallopian tubes.
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Seminal plasma is rich in

Stack of vesicles inside the chloroplast.

Which protein is present on coated vesicles ?