index	label	resource	url	accession	description
1	Microtubule	ncit	http://purl.obolibrary.org/obo/NCIT_C13256	NCIT_C13256	Microtubules of the eukaryotic cytoskeleton perform essential and diverse functions and are composed of a heterodimer of alpha and beta tubulin. The genes encoding these microtubule constituents are part of the tubulin superfamily, which is composed of six distinct families. Genes from the alpha, beta and gamma tubulin families are found in all eukaryotes. The alpha and beta tubulins represent the major components of microtubules, while gamma tubulin plays a critical role in the nucleation of microtubule assembly. There are multiple alpha and beta tubulin genes and they are highly conserved among and between species. (from LocusLink)
2	microtubule	spd	http://purl.obolibrary.org/obo/SPD_0000794	SPD_0000794	Any of the long, generally straight, hollow tubes of internal diameter 12-15 nm and external diameter 24 nm found in a wide variety of eukaryotic cells; each consists (usually) of 13 protofilaments of polymeric tubulin, staggered in such a manner that the tubulin monomers are arranged in a helical pattern on the microtubular surface, and with the alpha/beta axes of the tubulin subunits parallel to the long axis of the tubule; exist in equilibrium with pool of tubulin monomers and can be rapidly assembled or disassembled in response to physiological stimuli; concerned with force generation, e.g. in the spindle.
3	Microtubule	fma	http://purl.obolibrary.org/obo/FMA_63849	FMA_63849	-
4	microtubule	ecao	http://purl.obolibrary.org/obo/ECAO_0104150	ECAO_0104150	-
5	microtubule	xao	http://purl.obolibrary.org/obo/XAO_0005122	XAO_0005122	Any of the long, generally straight, hollow tubes of internal diameter 12-15 nm and external diameter 24 nm found in a wide variety of eukaryotic cells; each consists (usually) of 13 protofilaments of polymeric tubulin, staggered in such a manner that the tubulin monomers are arranged in a helical pattern on the microtubular surface, and with the alpha/beta axes of the tubulin subunits parallel to the long axis of the tubule; exist in equilibrium with pool of tubulin monomers and can be rapidly assembled or disassembled in response to physiological stimuli; concerned with force generation, e.g. in the spindle.
6	microtubule	go	http://purl.obolibrary.org/obo/GO_0005874	GO_0005874	-
7	Microtubule Proteins	omit	http://purl.obolibrary.org/obo/OMIT_0009922	OMIT_0009922	-
10	Microtubule cytoskeleton	fma	http://purl.obolibrary.org/obo/FMA_84873	FMA_84873	-