Fostel J, Narayanswami S, Hamkalo B, Clarkson S G, Pardue M L
Chromosoma. 1984;90(4):254-60. doi: 10.1007/BF00287032.
In Xenopus laevis, genes encoding tRNAPhe, tRNATyr, tRNAMet1, tRNAAsn, tRNAAla, tRNALeu, and tRNALys are clustered within a 3.18-kb (kilobase) fragment of DNA. This fragment is tandemly repeated some 150 times in the haploid genome and its components are found outside the repeat only to a limited extent. The fragment hybridizes in situ to a single site very near the telomere on the long arm of one of the acrocentric chromosomes of the group comprising chromosomes 13-18. All the chromosomes of this group also hybridize with DNA coding for oocyte-specific 5S RNA. The tRNA gene cluster is slightly proximal to the cluster of 5S RNA genes.
在非洲爪蟾中，编码苯丙氨酸tRNA、酪氨酸tRNA、甲硫氨酸tRNA1、天冬酰胺tRNA、丙氨酸tRNA、亮氨酸tRNA和赖氨酸tRNA的基因聚集在一段3.18千碱基（kb）的DNA片段中。该片段在单倍体基因组中串联重复约150次，其组成部分仅在有限程度上存在于重复序列之外。该片段原位杂交至一组近端着丝粒染色体（包含13 - 18号染色体）中一条染色体长臂上非常靠近端粒的单个位点。该组的所有染色体也与编码卵母细胞特异性5S RNA的DNA杂交。tRNA基因簇略靠近5S RNA基因簇。
