Contacts of the helix formed by residues 139 - 144 (chain H) in PDB entry 1RFU
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 LYS 139 (chain H).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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92H ALA* 4.1 27.9 + - - +
95H VAL* 3.6 30.0 - - + +
96H ASP* 3.1 26.7 + - - -
99H GLN* 5.7 0.6 + - - -
135H VAL* 2.8 26.8 + - + +
138H GLU* 1.3 80.9 - - + +
140H VAL* 1.3 62.6 + - - +
142H PRO* 3.5 7.9 - - - +
143H VAL* 3.7 6.4 + - - +
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Residues in contact with VAL 140 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
91H LEU* 3.7 28.5 - - + -
95H VAL* 3.6 22.2 - - + -
110H TYR* 3.5 28.0 - - + +
112H CYS* 3.6 21.3 - - - -
135H VAL* 3.1 13.4 + - + +
136H TYR* 3.4 19.5 + - + +
139H LYS* 1.3 74.6 - - - +
141H VAL* 1.3 70.4 + - + +
142H PRO* 3.0 2.2 - - - -
143H VAL* 2.9 23.7 + - - +
144H ALA* 3.2 4.3 + - - +
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Residues in contact with VAL 141 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
112H CYS* 5.7 1.1 - - - -
114H PRO* 5.6 2.2 - - + -
136H TYR* 3.0 19.6 + - + +
137H ARG* 4.5 6.1 - - - +
140H VAL* 1.3 76.2 - - + +
142H PRO* 1.3 73.0 - - + +
144H ALA* 2.9 17.2 + - - +
147H ILE* 4.5 15.3 - - + -
157H LEU* 3.9 30.5 - - + -
175H LEU* 4.5 3.1 - - + +
178H MET* 3.8 24.7 - - + -
180H PRO* 3.4 34.3 - - + +
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Residues in contact with PRO 142 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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137H ARG 4.0 7.2 - - - +
138H GLU* 3.0 28.5 - - - +
139H LYS* 3.5 4.0 - - - +
140H VAL 3.0 15.5 - - - +
141H VAL* 1.3 95.2 - - + +
143H VAL* 1.3 57.8 + - + +
144H ALA 4.4 0.2 - - - +
178H MET* 3.0 20.1 - - + +
179H GLY* 3.4 17.5 - - - -
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Residues in contact with VAL 143 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
95H VAL* 4.2 13.5 - - + -
98H VAL* 4.4 9.4 - - + -
99H GLN* 3.9 32.3 - - + +
102H LYS* 3.7 29.6 - - + -
110H TYR* 3.7 22.9 - - + -
139H LYS 3.7 14.1 - - - +
140H VAL* 2.9 20.7 + - - +
142H PRO* 1.3 80.7 - - + +
144H ALA* 1.3 60.0 + - - +
145H ASP* 4.4 0.9 - - - +
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Residues in contact with ALA 144 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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110H TYR* 3.9 8.7 - - + +
112H CYS* 3.7 29.2 - - + -
140H VAL 3.2 8.3 + - - +
141H VAL* 2.9 14.0 + - - +
142H PRO 4.4 0.3 - - - +
143H VAL* 1.3 78.2 - - - +
145H ASP* 1.3 61.9 + - - +
146H ILE 4.4 1.8 - - - +
147H ILE* 4.0 17.5 - - + -
179H GLY 3.6 3.5 - - - +
180H PRO* 3.0 26.6 - - - +
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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
------------------------------------------------------------
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