Contacts of the helix formed by residues 1142 - 1146 (chain A) in PDB entry 2BOA
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 ASP1142 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1069A HIS* 2.8 27.1 + - - -
1127A ARG* 3.0 26.6 + - - -
1128A LYS* 3.7 7.6 - - - +
1141A ALA* 1.3 67.9 - - - +
1143A PRO* 1.3 68.2 - - - +
1144A ASN* 2.9 10.2 + - - +
1145A ARG* 2.9 47.4 + - + +
1146A ASN* 3.4 10.9 + - - +
1163A GLU 3.5 13.6 - - - +
1164A VAL* 3.9 5.6 - - - +
1165A TYR 2.8 19.2 + - - +
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Residues in contact with PRO1143 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1068A ILE* 3.1 42.0 - - + +
1069A HIS* 4.0 11.4 - - + -
1112A ASN* 3.9 7.4 - - + +
1128A LYS* 4.0 7.6 - - - -
1129A THR* 3.6 25.4 - - + -
1141A ALA 3.0 8.5 - - - +
1142A ASP* 1.3 87.9 - - - +
1144A ASN* 1.3 54.5 + - - +
1145A ARG 3.3 2.1 + - - -
1146A ASN* 3.3 12.7 + - + +
1147A TRP* 3.1 24.1 + - - -
1173A GLU* 4.8 1.3 - - + -
1175A GLU* 6.2 2.0 - - + -
1176A VAL* 3.5 14.1 - - + +
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Residues in contact with ASN1144 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1068A ILE* 4.0 7.8 - - + +
1069A HIS* 3.6 17.5 - - + +
1142A ASP* 2.9 11.8 + - - +
1143A PRO* 1.3 76.8 - - - +
1145A ARG* 1.3 77.0 + - - +
1147A TRP* 4.1 4.6 + - - +
1194A ASP* 3.4 8.1 - - - +
1196A HIS* 4.0 12.0 + - - -
1251A SER 3.7 0.5 - - - +
1252A GLY 3.2 13.5 - - - +
1253A SER* 3.3 21.6 - - - -
1254A SER* 3.2 29.5 + - - -
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Residues in contact with ARG1145 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1069A HIS* 5.8 2.0 - - - -
1127A ARG* 5.8 2.1 - - - +
1142A ASP* 2.9 38.6 + - + +
1144A ASN* 1.3 105.1 + - - +
1146A ASN* 1.3 58.5 + - - +
1151A PHE* 3.9 6.2 - - - -
1152A ALA 5.1 0.2 + - - -
1155A GLY 3.2 17.9 + - - +
1156A ALA* 3.5 25.1 - - + -
1164A VAL* 3.7 14.0 - - - +
1166A HIS* 3.4 25.4 - - - +
1248A TYR* 3.2 29.1 + - - -
1250A ALA* 3.2 30.9 - - - +
1251A SER* 3.6 13.0 + - - +
1252A GLY* 3.3 15.4 - - - +
1253A SER* 5.0 2.0 - - - -
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Residues in contact with ASN1146 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1141A ALA* 5.4 0.2 - - + -
1142A ASP 3.6 7.9 - - - +
1143A PRO* 3.3 16.5 + - + +
1145A ARG* 1.3 79.2 - - - +
1147A TRP* 1.3 61.6 + - - +
1151A PHE* 3.6 1.9 - - - -
1166A HIS 2.9 23.5 + - - +
1169A HIS 3.2 13.3 + - - -
1170A ALA* 3.3 6.1 - - - -
1171A ASN* 2.8 36.0 + - - -
1172A SER* 2.9 30.0 + - - -
1173A GLU* 3.0 37.6 + - + +
1176A VAL* 3.6 6.4 - - + +
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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