权威生信在线分析工具指南

在线序列分析工具合集

汇集分子生物学与基因组学核心在线工具:从序列相似性比对 (BLAST)、多序列比对 (MUSCLE, Clustal) 到开放读码框识别与物理化学性质测定。搭配本站纯客户端无延迟的原生序列翻译器。

即开即用 · 浏览器本地计算

CodonTable 原生序列转换与分析工具

零等待、无需排队,直接在浏览器端完成 DNA/RNA 转换、六阅读框翻译与反密码子配对:

Free Built-in

DNA to Protein Converter

Convert DNA sequences to protein sequences with support for multiple genetic codes and reading frames
Free Built-in

DNA to RNA Converter

Transcribe DNA sequences to complementary RNA sequences with FASTA format support
Free Built-in

RNA to Protein Converter

Translate RNA sequences to protein sequences with support for multiple genetic codes and reading frames
Free Built-in

Codon to Anticodon Converter

Convert mRNA codons to complementary tRNA anticodons with 5' to 3' and 3' to 5' antiparallel pairing
Free Built-in

Sequence Translator

Comprehensive sequence translation tool supporting DNA and RNA to protein conversion
Free Built-in

Reverse Complement

Get the reverse complement of a DNA sequence.
全球标准学术平台

在线序列比对与理化特性分析服务

由 NCBI、EMBL-EBI、SIB 等权威机构维护的经典在线分析平台:

NCBI BLAST

by NCBI / NIH

Free

The gold-standard Basic Local Alignment Search Tool. Finds regions of local sequence similarity across nucleotide and protein databases with BLASTn, BLASTp, BLASTx, and tBLASTn.

BLASTNCBISequence SimilarityBLASTnBLASTpDatabase Search
Direct Web Access访问工具

NCBI Primer-BLAST

by NCBI / NIH

Free

Automated PCR primer design server integrating Primer3 with whole-genome BLAST specificity checks to avoid non-specific amplification across transcriptomes and genomes.

NCBIPrimer DesignqPCR PrimersSpecificity Check
Direct Web Access访问工具

Clustal Omega

by EMBL-EBI

Free

High-performance multiple sequence alignment (MSA) server by EMBL-EBI utilizing mBed guide trees and profile-profile Hidden Markov Model (HMM) algorithms.

MSAEMBL-EBIMultiple Sequence AlignmentPhylogeny
Direct Web Access访问工具

MUSCLE

by Robert C. Edgar / EMBL-EBI

Free

Renowned multiple sequence alignment tool achieving superior benchmark accuracy and rapid execution for large nucleotide and protein datasets.

MUSCLEMSAHigh AccuracyMultiple Alignment
Direct Web Access访问工具

T-Coffee

by Centre for Genomic Regulation (CRG) / EBI

Free

Consistency-based multiple sequence alignment package combining pairwise global and local alignments, structural templates, and high-accuracy progressive algorithms.

T-CoffeeMSAStructural AlignmentHigh Accuracy
Direct Web Access访问工具

UCSC In-Silico PCR

by UCSC Genome Browser Group

Free

Instant genome-wide electronic PCR simulator mapping primer pairs against reference genomes (Human, Mouse, Rat, etc.) to detect amplicon sizes, introns, and genomic loci.

UCSCIn-Silico PCRGenomicsAmplicon Sizing
Direct Web Access访问工具

NCBI ORFfinder

by NCBI / NIH

Free

Interactive open reading frame finder identifying all candidate protein-coding segments in DNA sequences using standard or non-standard genetic codes.

NCBIOpen Reading FrameGene PredictionCodon Translation
Direct Web Access访问工具

CodonTable Sequence Translator

by CodonTable (In-House)

Free

Instant client-side 6-frame translation tool translating nucleotide sequences to protein sequences across forward and reverse-complement frames with open reading frame visualization.

Sequence Translator6-Frame TranslationReading FrameCodonTable Native
Direct Web Access访问工具

如何选择合适的序列分析工具?

1. 序列相似性与同源检索

当你有一段未知的 DNA 或蛋白质,想要在全公共数据库中查找相似物种或基因家族时,首选 NCBI BLAST。

2. 多序列比对与系统发育

若需要比对多条同源基因寻找保守结构域或构建进化树,中大规模选择 MUSCLE 或 Clustal Omega;高精度需求选择 T-Coffee。

3. PCR引物设计与特异性

设计高特异性引物首选 NCBI Primer-BLAST;在全基因组尺度模拟引物扩增条带与排查非特异结合使用 UCSC In-Silico PCR。

4. 蛋白质理化与跨膜性质

计算理论等电点 (pI)、分子量 (MW) 使用 ProtParam;预测跨膜螺旋使用 TMHMM;预测分泌信号肽使用 SignalP。

常见问题与解答 (FAQ)

什么是最佳的在线多序列比对 (MSA) 工具?

对于大多数常规中等规模序列(<500条),MUSCLE 和 Clustal Omega 是首选工具,兼顾高准确率与较快计算速度。如果对一致性质量要求极高,推荐使用 T-Coffee。

如何在线进行 DNA/RNA 翻译并检查阅读框?

如果需要瞬时免登录、可在客户端直接进行多套遗传密码表与阅读框切换的翻译,推荐使用本站原生的 Sequence Translator 或 ExPASy Translate。

NCBI BLAST 应该选择哪种程序?

核酸比对核酸数据库选择 BLASTn;蛋白质比对蛋白质数据库选择 BLASTp;核酸按六框翻译比对蛋白质数据库选择 BLASTx。