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Protein Knowledgebase (UniProtKB) Sequence Clusters (UniRef) Sequence Archive (UniParc) Literature citations Taxonomy Keywords Subcellular locations News Documents User manual FAQ Help Annotation program
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For a sequence similarity search, enter: • a protein or nucleotide sequence • a valid UniProt identifier, e.g. P00750 or A4_HUMAN or UPI0000000001More...
P00750
A4_HUMAN
UPI0000000001
Database
UniProtKB ...Archaea ...Arthropoda ...Bacteria ...Fungi ...Human ...Mammals ...Nematoda ...Plants ...Rodents ...Vertebrates ...Viruses ...Complete microbial proteomes   UniProtKB/Swiss-Prot UniRef100 UniRef90 UniRef50 UniMES
Threshold
0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000
Matrix
Auto BLOSUM-62 BLOSUM-80 PAM-70 PAM-30
Filtering
None Filter low complexity regions Mask lookup table only
Gapped
yes no
Hits
100 250 500 1000 2000 3000
Uniprot identifiers
Align
To align several protein sequences, enter: • two or more sequences in FASTA format • two or more UniProt identifiers, e.g.: TPA_HUMAN TPA_PIG More...
TPA_HUMAN
TPA_PIG
Uniprot Identifiers
or file
Retrieve
Enter or upload a list of UniProt identifiers to download the corresponding entries, e.g. P00750 A4_HUMAN More...
Database identifiers
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To
Map
Swap
To map identifiers to or from UniProtKB: • enter identifiers, e.g.: 1TTA 1FNS • select a source database, e.g.: PDB • or select a target database, e.g.: UniProtKB More...
1TTA 1FNS
PDB
UniProtKB
0 selected:
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