Contacts of the helix formed by residues 1069 - 1075 (chain B) in PDB entry 2B5L
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with GLU1069 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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58B TYR* 4.3 0.4 - - - -
1067B LYS 4.8 4.5 - - - +
1068B ILE* 1.3 80.3 - - - +
1070B HIS* 1.3 66.8 + - - +
1071B SER* 3.9 13.1 + - - +
1072B PHE* 3.1 21.0 + - + +
1073B TRP* 3.0 18.4 + - - +
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Residues in contact with HIS1070 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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58B TYR* 3.9 29.4 - + + -
1055B GLN* 4.1 12.0 + - - -
1059B ASN* 3.1 43.6 - - + +
1068B ILE 3.7 2.8 + - - -
1069B GLU* 1.3 70.9 - - - +
1071B SER* 1.3 68.2 + - - +
1073B TRP* 2.9 19.0 + + - +
1074B ARG* 2.9 35.0 + - + +
1090B ASP* 3.3 31.3 - - - +
1093B LEU* 3.1 26.8 - - + +
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Residues in contact with SER1071 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1059B ASN* 4.8 1.0 - - - +
1069B GLU* 3.9 16.7 + - - +
1070B HIS* 1.3 83.3 - - - +
1072B PHE* 1.3 64.8 + - - +
1074B ARG* 4.2 2.0 - - - +
1075B SER* 3.2 26.2 + - - -
1084B PRO* 5.2 3.8 - - - +
1085B ALA* 5.1 2.6 + - - +
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Residues in contact with PHE1072 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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83B LYS* 2.9 48.1 + - + -
85B ASN* 3.3 37.0 - - - -
107B ASN* 3.6 18.8 - - - -
109B GLN* 5.2 8.7 - - - -
1068B ILE* 3.9 8.1 - - + -
1069B GLU* 3.1 21.9 + - + +
1070B HIS 3.0 0.6 - - - -
1071B SER* 1.3 80.7 + - - +
1073B TRP* 1.3 63.3 - - - +
1075B SER* 3.2 15.8 + - - -
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Residues in contact with TRP1073 (chain B).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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37B THR* 3.7 31.6 - - + -
57B MET 4.8 1.0 + - - -
58B TYR* 3.5 50.4 - + + +
59B GLY* 3.4 27.1 - - - -
60B LYS* 4.0 5.6 - - + -
83B LYS* 2.7 31.5 + - + +
999B HIS* 3.5 24.6 - + - -
1000B LEU 3.9 13.2 - - - -
1001B GLY* 4.1 8.3 - - - -
1068B ILE* 4.4 0.7 - - + -
1069B GLU 3.0 8.2 + - - +
1070B HIS* 2.9 10.7 + + - +
1072B PHE* 1.3 81.8 - - - +
1074B ARG* 1.3 107.4 + - + +
1090B ASP* 4.9 0.4 + - - -
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Residues in contact with ARG1074 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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998B PHE* 3.2 31.1 - - + -
999B HIS* 2.8 46.6 + - - -
1000B LEU* 3.3 20.6 + - - +
1070B HIS* 2.9 38.5 + - + +
1071B SER* 4.8 2.2 - - - +
1073B TRP* 1.3 105.9 - - + +
1075B SER* 1.3 59.7 + - - +
1085B ALA* 3.4 17.9 - - + +
1090B ASP* 2.7 35.3 + - - -
1092B ASP* 4.5 11.9 + - - +
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Residues in contact with SER1075 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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83B LYS* 3.1 18.7 + - - -
999B HIS* 3.6 3.1 - - - +
1071B SER 3.2 16.9 + - - -
1072B PHE* 3.2 17.0 + - - -
1073B TRP 3.3 1.2 - - - -
1074B ARG* 1.3 76.1 - - - +
1076B PHE* 1.3 67.2 + - - +
1077B HIS* 3.2 1.9 + - - +
1082B THR* 5.0 7.4 - - - +
1083B GLU 2.9 18.7 + - - -
1084B PRO* 3.4 15.3 - - - -
1085B ALA 3.7 7.2 - - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il