Rebab

The rebab (Arabic: ربابة‎, variously spelled rebap, rabab, rebeb, rababa and rabeba, also known as جوزه jawza or joza in Iraq) is a type of a bowed string instrument so named no later than the 8th century and spread via Islamic trading routes over much of North Africa, the Middle East, parts of Europe, and the Far East. The bowed variety often has a spike at the bottom to rest on the ground (see first image to the right), and is thus called a spike fiddle in certain areas, but plucked versions like the kabuli rebab (sometimes referred to as the robab or rubab) also exist.

Besides the spike fiddle variant, there also exists a variant with a pear-shaped body, quite similar to the Byzantine lyra and the Cretan lyra. This latter variant travelled to western Europe in the 11th century, and became the rebec.

This article will only concentrate on the spike-fiddle rebab, which usually consists of a small, usually rounded body, the front of which is covered in a membrane such as parchment or sheepskin and has a long neck attached. There is a long thin neck with a pegbox at the end and there are one, two or three strings. There is no fingerboard. The instrument is held upright, either resting on the lap or on the floor. The bow is usually more curved than that of the violin.

RAB7B

Ras-related protein Rab-7b is a protein that in humans is encoded by the RAB7B gene.

Function

Rab7 is a small GTPase that plays a role in the transport and degradation of proteins in endosomes and lysosomes in mammalian cells. Rab7b, is localized to lysosome-associated compartments and is selectively expressed in monocytic cells. By promoting the degradation of toll-like receptor 4, RAB7B can negatively regulate the inflammatory activation of macrophages.

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Further reading

RAB5B

Ras-related protein Rab-5B is a protein that in humans is encoded by the RAB5B gene.

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Further reading