Linked Life Data

117830

Source:http://linkedlifedata.com/resource/pubmed/id/117830

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
25
pubmed:dateCreated
1980-3-24
pubmed:abstractText
The complete sequence of histone 2B of Drosophila has been determined by using an improved Beckman sequenator. Comparing these data with those previously published by other investigators on the histone 2B of calf [Iwai, K., Hayashi, H., & Ishikawa, K. (1972) J. Biochem. (Tokyo) 72, 357--367], trout [Koostra, A., & Bailey, G. S. (1978) Biochemistry 17, 2504--2510], and Patella (a limpet) [van Helden, P. D., Strickland, W. N., Brandt, W. F., & von Holt, C. (1979) Eur. J. Biochem. 93, 71--78], it is possible to assess the evolutionary stability of this protein. There is little conservation of sequence in the N-terminal portion of the molecule (residues 1--26 numbering according to calf H2B), while the remainder of the protein, which we designate the C-terminal portion, is highly conserved. In the region of 27--125 residues, there are 9 substitutions in the composite data among the 98 positions, 8 of them conservative. These data indicate that very different selective pressures operate on the two different portions of the H2B molecule, implying the existence of two well-defined regions. Studies on the structure of the nucleosome by others have suggested that the C-terminal portion of H2B is involved in histone-histone interactions while the N-terminal portion is a relatively free "tail" binding to DNA. The sequence data indicate that the function of the C-terminal region of H2B requires considerable sequence specificity while that of the N-terminal region does not.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0006-2960
pubmed:author
pubmed:issnType
Print
pubmed:day
11
pubmed:volume
18
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5679-85
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Sequence of histone 2B of Drosophila melanogaster.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.