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頁籤選單縮合
題 名 | Identification of a Novel Family of Human Rab-like Small GTP-Binding Proteins=一群與Rab相似之新蛋白質基因 |
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作 者 | 彭慧玲; 鄭授德; 李靜嫺; 張晃猷; | 書刊名 | Proceedings of the National Science Council : Part B, Life Science |
卷 期 | 23:1 1999.01[民88.01] |
頁 次 | 頁38-44 |
分類號 | 364.21 |
關鍵詞 | 蛋白質; 基因; 海馬體; Small GTP binding proteins; Gene mapping; Hippocampus; |
語 文 | 英文(English) |
中文摘要 | 本報告描述在人類基因組中存在一群新的基因能產生與Rab相似之蛋白質,這些 新基因命名為 R1p-1、-2 及 -3。R1p-2 由人類淋巴球基因庫中所分離到,並利用螢光定位 雜合法將之標定於染色體 Xq21.3 的位置。 同時,也自人類腦部海馬體的互補 DNA 庫中搜 尋到數株 R1p-1 的互補 DNA。經由北方墨點法分析,發現 R1p-1 主要表現於腦部、心臟、 以及骨骼肌。 在所有被分析的腦部各區域, R1p-1 的表現量則大致相同。 R1p-3 則是在 GenBank 的資料庫中所發現,被標定於 16 號染色體短臂之末端。R1p-1、-2 及 -3 彼此間 氨基酸序列的相同性均超過 80%,並能產生約 31-kDa 的蛋白質,和在大腸桿菌中所產生的 R1p-1 蛋白質之分子量相當吻合。 |
英文摘要 | The presence of a novel family of Rab-like proteins (Rlp) in the human genome is reported. The gene encoding the Rlp-2 was isolated from a human lymphocyte genomic library. The Rlp-2 gene is intronless and was mapped to chromosome Xq21.3 using fluorescence in situ hybridization. Several cDNA clones encoding the Rlp-1 were identified in a human hippocampus lambda library. Northern analysis revealed a 2.1-kb transcript of Rlp-1 expressed predominantly in brain, heart and skeletal muscle. The transcript was also observed in all examined regions of the human brain at a similar level. An additional gene, termed Rlp-3, which is highly related to Rlp-1 and Rlp-2, was found in the GenBank Data Base. The predicted molecular mass for Rlp is approximately 31 kDa and is consistent with that of Rlp-1 synthesized in Escherichia coli. |
本系統中英文摘要資訊取自各篇刊載內容。