The November 2002 human genome assembly is based on NCBI Build 31.

Sample position queries

A genome position can be specified by the accession number of a sequenced genomic clone, an mRNA or EST or STS marker, or a cytological band, a chromosomal coordinate range, or keywords from the GenBank description of an mRNA. The following list shows examples of valid position queries for the human genome. See the User's Guide for more information.

Request:
    Genome Browser Response:

chr7 Displays all of chromosome 7
20p13 Displays region for band p13 on chr 20
chr3:1-1000000 Displays first million bases of chr 3, counting from p arm telomere
scf1:1-1000000 Displays first million bases of scaffold 1 of an unmapped genome assembly

D16S3046 Displays region around STS marker D16S3046 from the Genethon/Marshfield maps. Includes 100,000 bases on each side as well.
RH18061;RH80175 Displays region between STS markers RH18061;RH80175.

AA205474 Displays region of EST with GenBank accession AA205474 in BRCA1 cancer gene on chr 17
AC008101 Displays region of clone with GenBank accession AC008101
AF083811 Displays region of mRNA with GenBank accession number AF083811
PRNP Displays region of genome with HUGO Gene Nomenclature Committee identifier PRNP
NM_017414
Displays the region of genome with RefSeq identifier NM_017414
NP_059110
Displays the region of genome with protein accession number NP_059110
11274
Displays the region of genome with Entrez Gene identifier 11274

pseudogene mRNA Lists transcribed pseudogenes, but not cDNAs
homeobox caudal Lists mRNAs for caudal homeobox genes
zinc finger Lists many zinc finger mRNAs
kruppel zinc finger Lists only kruppel-like zinc fingers
huntington Lists candidate genes associated with Huntington's disease
zahler Lists mRNAs deposited by scientist named Zahler
Evans,J.E. Lists mRNAs deposited by co-author J.E. Evans

Use this last format for author queries. Although GenBank requires the search format Evans JE, internally it uses the format Evans,J.E..

Assembly details

Build 31 is an excellent high-quality assembly that shows a remarkable amount of progress toward the milestone of finishing the human genome. More than 95% of the euchromatic region of the genome is complete, with greater than 90% of the sequence in a finished state. The number of clone contig gaps has decreased by one third from the previous assembly, and the overall number of sequenced contigs has been reduced by one half. Seven chromosomes are considered to be in a finished state: 6, 7, 13, 20, 21, 22, and Y.

Bulk downloads of the sequence and annotation data are available via the Genome Browser FTP server or Downloads page. The annotation tracks displayed in the Genome Browser were generated by UCSC and collaborators worldwide. See the Credits page for a detailed list of the organizations and individuals who contributed to the success of this release.

Statistical information